migrate to AndroidX

114 files changed, 269 insertions, 285 deletions

diff --git a/src/main/java/de/pixart/messenger/crypto/PgpEngine.java b/src/main/java/de/pixart/messenger/crypto/PgpEngine.java
index 8cd0e2e6f..606ba81f6 100644
--- a/src/main/java/de/pixart/messenger/crypto/PgpEngine.java
+++ b/src/main/java/de/pixart/messenger/crypto/PgpEngine.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.crypto;
 
 import android.app.PendingIntent;
 import android.content.Intent;
-import android.support.annotation.StringRes;
+import androidx.annotation.StringRes;
 import android.util.Log;
 
 import org.openintents.openpgp.OpenPgpError;
diff --git a/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java b/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
index c6f5ea7f9..fca50d3ec 100644
--- a/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
+++ b/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
@@ -2,8 +2,8 @@ package de.pixart.messenger.crypto.axolotl;
 
 import android.os.Bundle;
 import android.security.KeyChain;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import android.util.Log;
 import android.util.Pair;
 
diff --git a/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlSession.java b/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlSession.java
index f7a9c0a6f..896dafce2 100644
--- a/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlSession.java
+++ b/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlSession.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.crypto.axolotl;
 
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import android.util.Log;
 
 import org.whispersystems.libsignal.DuplicateMessageException;
diff --git a/src/main/java/de/pixart/messenger/entities/Bookmark.java b/src/main/java/de/pixart/messenger/entities/Bookmark.java
index 08c368b76..f57d1aacb 100644
--- a/src/main/java/de/pixart/messenger/entities/Bookmark.java
+++ b/src/main/java/de/pixart/messenger/entities/Bookmark.java
@@ -1,8 +1,8 @@
 package de.pixart.messenger.entities;
 
 import android.content.Context;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
diff --git a/src/main/java/de/pixart/messenger/entities/Contact.java b/src/main/java/de/pixart/messenger/entities/Contact.java
index 7d9f100e2..776ed4cec 100644
--- a/src/main/java/de/pixart/messenger/entities/Contact.java
+++ b/src/main/java/de/pixart/messenger/entities/Contact.java
@@ -4,7 +4,7 @@ import android.content.ContentValues;
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.text.TextUtils;
 
 import org.json.JSONArray;
diff --git a/src/main/java/de/pixart/messenger/entities/Conversation.java b/src/main/java/de/pixart/messenger/entities/Conversation.java
index 866b33597..707074551 100644
--- a/src/main/java/de/pixart/messenger/entities/Conversation.java
+++ b/src/main/java/de/pixart/messenger/entities/Conversation.java
@@ -2,8 +2,8 @@ package de.pixart.messenger.entities;
 
 import android.content.ContentValues;
 import android.database.Cursor;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import android.text.TextUtils;
 
 import net.java.otr4j.OtrException;
diff --git a/src/main/java/de/pixart/messenger/entities/MucOptions.java b/src/main/java/de/pixart/messenger/entities/MucOptions.java
index aedb01144..36bb43fbe 100644
--- a/src/main/java/de/pixart/messenger/entities/MucOptions.java
+++ b/src/main/java/de/pixart/messenger/entities/MucOptions.java
@@ -1,8 +1,8 @@
 package de.pixart.messenger.entities;
 
 import android.annotation.SuppressLint;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import android.text.TextUtils;
 
 import java.util.ArrayList;
diff --git a/src/main/java/de/pixart/messenger/entities/Presence.java b/src/main/java/de/pixart/messenger/entities/Presence.java
index 14836c145..01d442a2b 100644
--- a/src/main/java/de/pixart/messenger/entities/Presence.java
+++ b/src/main/java/de/pixart/messenger/entities/Presence.java
@@ -1,6 +1,6 @@
 package de.pixart.messenger.entities;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 
 import java.util.Locale;
 
diff --git a/src/main/java/de/pixart/messenger/entities/ServiceDiscoveryResult.java b/src/main/java/de/pixart/messenger/entities/ServiceDiscoveryResult.java
index 50b118cba..5e5b20607 100644
--- a/src/main/java/de/pixart/messenger/entities/ServiceDiscoveryResult.java
+++ b/src/main/java/de/pixart/messenger/entities/ServiceDiscoveryResult.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.entities;
 
 import android.content.ContentValues;
 import android.database.Cursor;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Base64;
 
 import org.json.JSONArray;
diff --git a/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java b/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
index ac3e8e40c..6d92529db 100644
--- a/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
+++ b/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.http;
 
 import android.os.PowerManager;
-import android.support.annotation.Nullable;
+import androidx.annotation.Nullable;
 import android.util.Log;
 
 import java.io.BufferedInputStream;
diff --git a/src/main/java/de/pixart/messenger/parser/IqParser.java b/src/main/java/de/pixart/messenger/parser/IqParser.java
index c3bd85922..d689d0667 100644
--- a/src/main/java/de/pixart/messenger/parser/IqParser.java
+++ b/src/main/java/de/pixart/messenger/parser/IqParser.java
@@ -1,6 +1,6 @@
 package de.pixart.messenger.parser;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Base64;
 import android.util.Log;
 import android.util.Pair;
diff --git a/src/main/java/de/pixart/messenger/persistance/FileBackend.java b/src/main/java/de/pixart/messenger/persistance/FileBackend.java
index 235547c1d..e30cb028c 100644
--- a/src/main/java/de/pixart/messenger/persistance/FileBackend.java
+++ b/src/main/java/de/pixart/messenger/persistance/FileBackend.java
@@ -21,8 +21,8 @@ import android.os.Environment;
 import android.os.ParcelFileDescriptor;
 import android.provider.MediaStore;
 import android.provider.OpenableColumns;
-import android.support.annotation.RequiresApi;
-import android.support.v4.content.FileProvider;
+import androidx.annotation.RequiresApi;
+import androidx.core.content.FileProvider;
 import android.system.Os;
 import android.system.StructStat;
 import android.util.Base64;
diff --git a/src/main/java/de/pixart/messenger/services/AbstractEmojiService.java b/src/main/java/de/pixart/messenger/services/AbstractEmojiService.java
index 5eacdb676..377e21f4c 100644
--- a/src/main/java/de/pixart/messenger/services/AbstractEmojiService.java
+++ b/src/main/java/de/pixart/messenger/services/AbstractEmojiService.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.services;
 
 import android.content.Context;
 import android.os.Build;
-import android.support.text.emoji.EmojiCompat;
+import androidx.emoji.text.EmojiCompat;
 import android.util.Log;
 
 import de.pixart.messenger.Config;
diff --git a/src/main/java/de/pixart/messenger/services/AttachFileToConversationRunnable.java b/src/main/java/de/pixart/messenger/services/AttachFileToConversationRunnable.java
index fbf77577b..a56d3cea2 100644
--- a/src/main/java/de/pixart/messenger/services/AttachFileToConversationRunnable.java
+++ b/src/main/java/de/pixart/messenger/services/AttachFileToConversationRunnable.java
@@ -3,7 +3,7 @@ package de.pixart.messenger.services;
 import android.net.Uri;
 import android.os.Build;
 import android.os.ParcelFileDescriptor;
-import android.support.annotation.RequiresApi;
+import androidx.annotation.RequiresApi;
 import android.util.Log;
 
 import net.ypresto.androidtranscoder.MediaTranscoder;
diff --git a/src/main/java/de/pixart/messenger/services/AudioPlayer.java b/src/main/java/de/pixart/messenger/services/AudioPlayer.java
index 4f8d40c18..ecb3f5c21 100644
--- a/src/main/java/de/pixart/messenger/services/AudioPlayer.java
+++ b/src/main/java/de/pixart/messenger/services/AudioPlayer.java
@@ -12,8 +12,8 @@ import android.media.AudioManager;
 import android.os.Build;
 import android.os.Handler;
 import android.os.PowerManager;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.view.View;
 import android.widget.ImageButton;
diff --git a/src/main/java/de/pixart/messenger/services/AvatarService.java b/src/main/java/de/pixart/messenger/services/AvatarService.java
index a07b3a6e5..469de2599 100644
--- a/src/main/java/de/pixart/messenger/services/AvatarService.java
+++ b/src/main/java/de/pixart/messenger/services/AvatarService.java
@@ -13,9 +13,9 @@ import android.graphics.Typeface;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
-import android.support.annotation.ColorInt;
-import android.support.annotation.Nullable;
-import android.support.v4.content.res.ResourcesCompat;
+import androidx.annotation.ColorInt;
+import androidx.annotation.Nullable;
+import androidx.core.content.res.ResourcesCompat;
 import android.text.TextUtils;
 import android.util.DisplayMetrics;
 import android.util.Log;
diff --git a/src/main/java/de/pixart/messenger/services/BarcodeProvider.java b/src/main/java/de/pixart/messenger/services/BarcodeProvider.java
index 5ac2ee016..f2e7fff2d 100644
--- a/src/main/java/de/pixart/messenger/services/BarcodeProvider.java
+++ b/src/main/java/de/pixart/messenger/services/BarcodeProvider.java
@@ -13,7 +13,7 @@ import android.net.Uri;
 import android.os.CancellationSignal;
 import android.os.IBinder;
 import android.os.ParcelFileDescriptor;
-import android.support.annotation.Nullable;
+import androidx.annotation.Nullable;
 import android.util.Log;
 
 import com.google.zxing.BarcodeFormat;
diff --git a/src/main/java/de/pixart/messenger/services/ChannelDiscoveryService.java b/src/main/java/de/pixart/messenger/services/ChannelDiscoveryService.java
index a9b4c6504..6922ab96b 100644
--- a/src/main/java/de/pixart/messenger/services/ChannelDiscoveryService.java
+++ b/src/main/java/de/pixart/messenger/services/ChannelDiscoveryService.java
@@ -1,6 +1,6 @@
 package de.pixart.messenger.services;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import com.google.common.cache.Cache;
diff --git a/src/main/java/de/pixart/messenger/services/EmojiService.java b/src/main/java/de/pixart/messenger/services/EmojiService.java
index 6f8d8facd..26be25202 100644
--- a/src/main/java/de/pixart/messenger/services/EmojiService.java
+++ b/src/main/java/de/pixart/messenger/services/EmojiService.java
@@ -1,8 +1,8 @@
 package de.pixart.messenger.services;
 
 import android.content.Context;
-import android.support.text.emoji.EmojiCompat;
-import android.support.text.emoji.bundled.BundledEmojiCompatConfig;
+import androidx.emoji.text.EmojiCompat;
+import androidx.emoji.bundled.BundledEmojiCompatConfig;
 
 public class EmojiService extends AbstractEmojiService {
 
diff --git a/src/main/java/de/pixart/messenger/services/ExportBackupService.java b/src/main/java/de/pixart/messenger/services/ExportBackupService.java
index 96ec4c6cd..a6d595712 100644
--- a/src/main/java/de/pixart/messenger/services/ExportBackupService.java
+++ b/src/main/java/de/pixart/messenger/services/ExportBackupService.java
@@ -11,12 +11,11 @@ import android.database.Cursor;
 import android.database.DatabaseUtils;
 import android.database.sqlite.SQLiteDatabase;
 import android.net.Uri;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.PowerManager;
 import android.preference.PreferenceManager;
-import android.support.v4.app.NotificationCompat;
+import androidx.core.app.NotificationCompat;
 import android.util.Log;
 
 import java.io.BufferedWriter;
diff --git a/src/main/java/de/pixart/messenger/services/ImportBackupService.java b/src/main/java/de/pixart/messenger/services/ImportBackupService.java
index 79616305b..b739b15bf 100644
--- a/src/main/java/de/pixart/messenger/services/ImportBackupService.java
+++ b/src/main/java/de/pixart/messenger/services/ImportBackupService.java
@@ -10,7 +10,7 @@ import android.database.sqlite.SQLiteDatabase;
 import android.net.Uri;
 import android.os.Binder;
 import android.os.IBinder;
-import android.support.v4.app.NotificationCompat;
+import androidx.core.app.NotificationCompat;
 import android.util.Log;
 
 import java.io.BufferedReader;
diff --git a/src/main/java/de/pixart/messenger/services/MemorizingTrustManager.java b/src/main/java/de/pixart/messenger/services/MemorizingTrustManager.java
index d98e97a58..899a12d5b 100644
--- a/src/main/java/de/pixart/messenger/services/MemorizingTrustManager.java
+++ b/src/main/java/de/pixart/messenger/services/MemorizingTrustManager.java
@@ -34,7 +34,7 @@ import android.content.Intent;
 import android.net.Uri;
 import android.os.Handler;
 import android.preference.PreferenceManager;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.util.Base64;
 import android.util.Log;
 import android.util.SparseArray;
diff --git a/src/main/java/de/pixart/messenger/services/NotificationService.java b/src/main/java/de/pixart/messenger/services/NotificationService.java
index 10fccaf73..e64615f31 100644
--- a/src/main/java/de/pixart/messenger/services/NotificationService.java
+++ b/src/main/java/de/pixart/messenger/services/NotificationService.java
@@ -17,15 +17,15 @@ import android.net.Uri;
 import android.os.Build;
 import android.os.SystemClock;
 import android.preference.PreferenceManager;
-import android.support.annotation.RequiresApi;
-import android.support.v4.app.NotificationCompat;
-import android.support.v4.app.NotificationCompat.BigPictureStyle;
-import android.support.v4.app.NotificationCompat.Builder;
-import android.support.v4.app.NotificationManagerCompat;
-import android.support.v4.app.Person;
-import android.support.v4.app.RemoteInput;
-import android.support.v4.content.ContextCompat;
-import android.support.v4.graphics.drawable.IconCompat;
+import androidx.annotation.RequiresApi;
+import androidx.core.app.NotificationCompat;
+import androidx.core.app.NotificationCompat.BigPictureStyle;
+import androidx.core.app.NotificationCompat.Builder;
+import androidx.core.app.NotificationManagerCompat;
+import androidx.core.app.Person;
+import androidx.core.app.RemoteInput;
+import androidx.core.content.ContextCompat;
+import androidx.core.graphics.drawable.IconCompat;
 import android.text.SpannableString;
 import android.text.style.StyleSpan;
 import android.util.DisplayMetrics;
diff --git a/src/main/java/de/pixart/messenger/services/ShortcutService.java b/src/main/java/de/pixart/messenger/services/ShortcutService.java
index 94bbc15cd..a7278a7d3 100644
--- a/src/main/java/de/pixart/messenger/services/ShortcutService.java
+++ b/src/main/java/de/pixart/messenger/services/ShortcutService.java
@@ -8,7 +8,7 @@ import android.graphics.Bitmap;
 import android.graphics.drawable.Icon;
 import android.net.Uri;
 import android.os.Build;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.ArrayList;
diff --git a/src/main/java/de/pixart/messenger/services/XmppConnectionService.java b/src/main/java/de/pixart/messenger/services/XmppConnectionService.java
index 6d483419d..dded48c0a 100644
--- a/src/main/java/de/pixart/messenger/services/XmppConnectionService.java
+++ b/src/main/java/de/pixart/messenger/services/XmppConnectionService.java
@@ -33,10 +33,10 @@ import android.os.Vibrator;
 import android.preference.PreferenceManager;
 import android.provider.ContactsContract;
 import android.security.KeyChain;
-import android.support.annotation.BoolRes;
-import android.support.annotation.IntegerRes;
-import android.support.v4.app.RemoteInput;
-import android.support.v4.content.ContextCompat;
+import androidx.annotation.BoolRes;
+import androidx.annotation.IntegerRes;
+import androidx.core.app.RemoteInput;
+import androidx.core.content.ContextCompat;
 import android.text.TextUtils;
 import android.util.DisplayMetrics;
 import android.util.Log;
diff --git a/src/main/java/de/pixart/messenger/ui/AbstractSearchableListItemActivity.java b/src/main/java/de/pixart/messenger/ui/AbstractSearchableListItemActivity.java
index 01246ad92..6b5d8f24f 100644
--- a/src/main/java/de/pixart/messenger/ui/AbstractSearchableListItemActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/AbstractSearchableListItemActivity.java
@@ -1,9 +1,9 @@
 package de.pixart.messenger.ui;
 
 import android.content.Context;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.view.KeyEvent;
diff --git a/src/main/java/de/pixart/messenger/ui/ActionBarActivity.java b/src/main/java/de/pixart/messenger/ui/ActionBarActivity.java
index 0bd0c78c7..a76e009dd 100644
--- a/src/main/java/de/pixart/messenger/ui/ActionBarActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ActionBarActivity.java
@@ -2,9 +2,9 @@ package de.pixart.messenger.ui;
 
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
-import android.support.annotation.BoolRes;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.BoolRes;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.MenuItem;
 import android.view.WindowManager;
 
diff --git a/src/main/java/de/pixart/messenger/ui/BlockContactDialog.java b/src/main/java/de/pixart/messenger/ui/BlockContactDialog.java
index 562bf2efa..80b6f26cc 100644
--- a/src/main/java/de/pixart/messenger/ui/BlockContactDialog.java
+++ b/src/main/java/de/pixart/messenger/ui/BlockContactDialog.java
@@ -1,8 +1,8 @@
 package de.pixart.messenger.ui;
 
-import android.databinding.DataBindingUtil;
-import android.support.annotation.StringRes;
-import android.support.v7.app.AlertDialog;
+import androidx.databinding.DataBindingUtil;
+import androidx.annotation.StringRes;
+import androidx.appcompat.app.AlertDialog;
 import android.view.View;
 import android.widget.Toast;
 
diff --git a/src/main/java/de/pixart/messenger/ui/BlocklistActivity.java b/src/main/java/de/pixart/messenger/ui/BlocklistActivity.java
index 2927fe3e3..48cf7aeb1 100644
--- a/src/main/java/de/pixart/messenger/ui/BlocklistActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/BlocklistActivity.java
@@ -1,8 +1,8 @@
 package de.pixart.messenger.ui;
 
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentTransaction;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentTransaction;
 import android.text.Editable;
 import android.widget.Toast;
 
@@ -11,7 +11,6 @@ import java.util.Collections;
 import de.pixart.messenger.R;
 import de.pixart.messenger.entities.Account;
 import de.pixart.messenger.entities.Blockable;
-import de.pixart.messenger.entities.Contact;
 import de.pixart.messenger.entities.ListItem;
 import de.pixart.messenger.entities.RawBlockable;
 import de.pixart.messenger.ui.interfaces.OnBackendConnected;
diff --git a/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java b/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java
index df9113448..fbffddfb8 100644
--- a/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.ui;
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.design.widget.TextInputLayout;
+import com.google.android.material.textfield.TextInputLayout;
 import android.view.View;
 import android.widget.Button;
 import android.widget.Toast;
diff --git a/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java b/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java
index 79d88ca6f..7696bd4eb 100644
--- a/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java
@@ -3,9 +3,9 @@ package de.pixart.messenger.ui;
 import android.app.AlertDialog;
 import android.content.Context;
 import android.content.SharedPreferences;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Html;
 import android.view.KeyEvent;
 import android.view.Menu;
diff --git a/src/main/java/de/pixart/messenger/ui/ChooseContactActivity.java b/src/main/java/de/pixart/messenger/ui/ChooseContactActivity.java
index 7f1869e9f..249b5e1a8 100644
--- a/src/main/java/de/pixart/messenger/ui/ChooseContactActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ChooseContactActivity.java
@@ -5,11 +5,11 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.annotation.StringRes;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v7.app.ActionBar;
+import androidx.annotation.NonNull;
+import androidx.annotation.StringRes;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.appcompat.app.ActionBar;
 import android.view.ActionMode;
 import android.view.KeyEvent;
 import android.view.Menu;
diff --git a/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java b/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java
index 8b1980c6c..043edfe49 100644
--- a/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java
@@ -3,11 +3,11 @@ package de.pixart.messenger.ui;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.PorterDuff;
 import android.os.Bundle;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Editable;
 import android.text.SpannableStringBuilder;
 import android.text.TextWatcher;
diff --git a/src/main/java/de/pixart/messenger/ui/ContactDetailsActivity.java b/src/main/java/de/pixart/messenger/ui/ContactDetailsActivity.java
index 91f48c4c4..4bee618f5 100644
--- a/src/main/java/de/pixart/messenger/ui/ContactDetailsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ContactDetailsActivity.java
@@ -5,7 +5,7 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.PorterDuff;
 import android.net.Uri;
 import android.os.Bundle;
@@ -13,10 +13,10 @@ import android.preference.PreferenceManager;
 import android.provider.ContactsContract.CommonDataKinds;
 import android.provider.ContactsContract.Contacts;
 import android.provider.ContactsContract.Intents;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.widget.Toolbar;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
diff --git a/src/main/java/de/pixart/messenger/ui/ConversationFragment.java b/src/main/java/de/pixart/messenger/ui/ConversationFragment.java
index 6f29655f6..74c85dc34 100644
--- a/src/main/java/de/pixart/messenger/ui/ConversationFragment.java
+++ b/src/main/java/de/pixart/messenger/ui/ConversationFragment.java
@@ -14,7 +14,7 @@ import android.content.Intent;
 import android.content.IntentSender.SendIntentException;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
@@ -22,15 +22,15 @@ import android.os.Handler;
 import android.os.SystemClock;
 import android.preference.PreferenceManager;
 import android.provider.MediaStore;
-import android.support.annotation.IdRes;
-import android.support.annotation.NonNull;
-import android.support.annotation.StringRes;
-import android.support.v13.view.inputmethod.InputConnectionCompat;
-import android.support.v13.view.inputmethod.InputContentInfoCompat;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.view.menu.MenuBuilder;
-import android.support.v7.view.menu.MenuPopupHelper;
-import android.support.v7.widget.PopupMenu;
+import androidx.annotation.IdRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.StringRes;
+import androidx.core.view.inputmethod.InputConnectionCompat;
+import androidx.core.view.inputmethod.InputContentInfoCompat;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.view.menu.MenuBuilder;
+import androidx.appcompat.view.menu.MenuPopupHelper;
+import androidx.appcompat.widget.PopupMenu;
 import android.text.Editable;
 import android.text.TextUtils;
 import android.util.Log;
diff --git a/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java b/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
index 49e6d48ef..75b3ce91a 100644
--- a/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
@@ -40,17 +40,17 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Typeface;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.provider.Settings;
-import android.support.annotation.IdRes;
-import android.support.annotation.NonNull;
-import android.support.v7.app.ActionBar;
-import android.support.v7.widget.Toolbar;
+import androidx.annotation.IdRes;
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -95,7 +95,6 @@ import de.pixart.messenger.xmpp.chatstate.ChatState;
 import rocks.xmpp.addr.Jid;
 
 import static de.pixart.messenger.ui.ConversationFragment.REQUEST_DECRYPT_PGP;
-import static de.pixart.messenger.ui.SettingsActivity.USE_INTERNAL_UPDATER;
 
 public class ConversationsActivity extends XmppActivity implements OnConversationSelected, OnConversationArchived, OnConversationsListItemUpdated, OnConversationRead, XmppConnectionService.OnAccountUpdate, XmppConnectionService.OnConversationUpdate, XmppConnectionService.OnRosterUpdate, OnUpdateBlocklist, XmppConnectionService.OnShowErrorToast, XmppConnectionService.OnAffiliationChanged, XmppConnectionService.OnRoomDestroy {
 
diff --git a/src/main/java/de/pixart/messenger/ui/ConversationsOverviewFragment.java b/src/main/java/de/pixart/messenger/ui/ConversationsOverviewFragment.java
index 4f85c97c6..1ddb30c66 100644
--- a/src/main/java/de/pixart/messenger/ui/ConversationsOverviewFragment.java
+++ b/src/main/java/de/pixart/messenger/ui/ConversationsOverviewFragment.java
@@ -34,9 +34,9 @@ import android.animation.AnimatorInflater;
 import android.app.Activity;
 import android.app.Fragment;
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.LinearLayoutManager;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
diff --git a/src/main/java/de/pixart/messenger/ui/CreatePrivateGroupChatDialog.java b/src/main/java/de/pixart/messenger/ui/CreatePrivateGroupChatDialog.java
index c77211e9d..06087fba1 100644
--- a/src/main/java/de/pixart/messenger/ui/CreatePrivateGroupChatDialog.java
+++ b/src/main/java/de/pixart/messenger/ui/CreatePrivateGroupChatDialog.java
@@ -2,11 +2,11 @@ package de.pixart.messenger.ui;
 
 import android.app.Dialog;
 import android.content.Context;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.DialogFragment;
-import android.support.v7.app.AlertDialog;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;
+import androidx.appcompat.app.AlertDialog;
 import android.view.View;
 import android.widget.Spinner;
 
diff --git a/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java b/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java
index cbaf3468c..43ac03896 100644
--- a/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java
+++ b/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java
@@ -4,11 +4,11 @@ import android.app.Activity;
 import android.app.Dialog;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.DialogFragment;
-import android.support.v7.app.AlertDialog;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;
+import androidx.appcompat.app.AlertDialog;
 import android.text.Editable;
 import android.text.TextUtils;
 import android.text.TextWatcher;
diff --git a/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java b/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java
index f8ad82c59..8d5712bf5 100644
--- a/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java
@@ -7,7 +7,7 @@ import android.content.ActivityNotFoundException;
 import android.content.Intent;
 import android.content.IntentSender;
 import android.content.SharedPreferences;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
@@ -16,12 +16,12 @@ import android.preference.PreferenceManager;
 import android.provider.Settings;
 import android.security.KeyChain;
 import android.security.KeyChainAliasCallback;
-import android.support.annotation.NonNull;
-import android.support.design.widget.TextInputLayout;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.widget.Toolbar;
+import androidx.annotation.NonNull;
+import com.google.android.material.textfield.TextInputLayout;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Editable;
 import android.text.TextUtils;
 import android.text.TextWatcher;
diff --git a/src/main/java/de/pixart/messenger/ui/EnterJidDialog.java b/src/main/java/de/pixart/messenger/ui/EnterJidDialog.java
index 05b234e6f..2b9a6b8e3 100644
--- a/src/main/java/de/pixart/messenger/ui/EnterJidDialog.java
+++ b/src/main/java/de/pixart/messenger/ui/EnterJidDialog.java
@@ -2,11 +2,11 @@ package de.pixart.messenger.ui;
 
 import android.app.Activity;
 import android.app.Dialog;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.DialogFragment;
-import android.support.v7.app.AlertDialog;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;
+import androidx.appcompat.app.AlertDialog;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java b/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java
index eefda7df9..1b4a73e82 100644
--- a/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java
@@ -1,9 +1,9 @@
 package de.pixart.messenger.ui;
 
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.widget.Toolbar;
 import android.view.View;
 
 import java.util.concurrent.atomic.AtomicBoolean;
diff --git a/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java b/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java
index cc5b35e11..8f65e54eb 100644
--- a/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java
@@ -5,15 +5,15 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.ServiceConnection;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
-import android.support.design.widget.Snackbar;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.widget.Toolbar;
+import com.google.android.material.snackbar.Snackbar;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
diff --git a/src/main/java/de/pixart/messenger/ui/JoinConferenceDialog.java b/src/main/java/de/pixart/messenger/ui/JoinConferenceDialog.java
index f97a7074b..3ed86aba5 100644
--- a/src/main/java/de/pixart/messenger/ui/JoinConferenceDialog.java
+++ b/src/main/java/de/pixart/messenger/ui/JoinConferenceDialog.java
@@ -4,11 +4,11 @@ import android.app.Activity;
 import android.app.Dialog;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.DialogFragment;
-import android.support.v7.app.AlertDialog;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.DialogFragment;
+import androidx.appcompat.app.AlertDialog;
 import android.view.View;
 import android.widget.AutoCompleteTextView;
 import android.widget.Spinner;
@@ -19,7 +19,6 @@ import java.util.List;
 
 import de.pixart.messenger.R;
 import de.pixart.messenger.databinding.DialogJoinConferenceBinding;
-import de.pixart.messenger.services.XmppConnectionService;
 import de.pixart.messenger.ui.adapter.KnownHostsAdapter;
 import de.pixart.messenger.ui.interfaces.OnBackendConnected;
 import de.pixart.messenger.ui.util.DelayedHintHelper;
diff --git a/src/main/java/de/pixart/messenger/ui/LocationActivity.java b/src/main/java/de/pixart/messenger/ui/LocationActivity.java
index c7668a142..ef6b24b74 100644
--- a/src/main/java/de/pixart/messenger/ui/LocationActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/LocationActivity.java
@@ -7,7 +7,7 @@ import android.location.Location;
 import android.location.LocationListener;
 import android.location.LocationManager;
 import android.os.Bundle;
-import android.support.v4.app.ActivityCompat;
+import androidx.core.app.ActivityCompat;
 
 import de.pixart.messenger.Config;
 
diff --git a/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java b/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java
index e632f4e92..8d39df934 100644
--- a/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java
@@ -5,9 +5,9 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.security.KeyChain;
 import android.security.KeyChainAliasCallback;
-import android.support.annotation.NonNull;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
 import android.util.Pair;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
diff --git a/src/main/java/de/pixart/messenger/ui/MediaBrowserActivity.java b/src/main/java/de/pixart/messenger/ui/MediaBrowserActivity.java
index 9aa308f57..608e689e5 100644
--- a/src/main/java/de/pixart/messenger/ui/MediaBrowserActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/MediaBrowserActivity.java
@@ -2,9 +2,9 @@ package de.pixart.messenger.ui;
 
 import android.content.Context;
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.widget.Toolbar;
 import android.view.View;
 
 import java.util.List;
diff --git a/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java b/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java
index d8082b7e9..8f51e3c05 100644
--- a/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java
@@ -8,18 +8,17 @@ import android.content.pm.ActivityInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.res.Configuration;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
-import android.graphics.PointF;
 import android.media.AudioManager;
 import android.media.MediaMetadataRetriever;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
 import android.preference.PreferenceManager;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
 import android.util.Log;
 import android.view.GestureDetector;
 import android.view.MotionEvent;
diff --git a/src/main/java/de/pixart/messenger/ui/MemorizingActivity.java b/src/main/java/de/pixart/messenger/ui/MemorizingActivity.java
index a47adc6eb..0110cd7e8 100644
--- a/src/main/java/de/pixart/messenger/ui/MemorizingActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/MemorizingActivity.java
@@ -28,8 +28,8 @@ import android.content.DialogInterface.OnCancelListener;
 import android.content.DialogInterface.OnClickListener;
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
 
 import java.util.logging.Level;
 import java.util.logging.Logger;
diff --git a/src/main/java/de/pixart/messenger/ui/MucUsersActivity.java b/src/main/java/de/pixart/messenger/ui/MucUsersActivity.java
index b8bc57b87..0bb4deee8 100644
--- a/src/main/java/de/pixart/messenger/ui/MucUsersActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/MucUsersActivity.java
@@ -2,9 +2,9 @@ package de.pixart.messenger.ui;
 
 import android.content.Context;
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Editable;
 import android.text.TextUtils;
 import android.text.TextWatcher;
diff --git a/src/main/java/de/pixart/messenger/ui/OmemoActivity.java b/src/main/java/de/pixart/messenger/ui/OmemoActivity.java
index 25a791e10..4841cd3a4 100644
--- a/src/main/java/de/pixart/messenger/ui/OmemoActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/OmemoActivity.java
@@ -2,8 +2,8 @@ package de.pixart.messenger.ui;
 
 
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
-import android.support.v7.app.AlertDialog;
+import androidx.databinding.DataBindingUtil;
+import androidx.appcompat.app.AlertDialog;
 import android.view.ContextMenu;
 import android.view.MenuItem;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/PublishGroupChatProfilePictureActivity.java b/src/main/java/de/pixart/messenger/ui/PublishGroupChatProfilePictureActivity.java
index 0a8ec2e7f..3dcefa893 100644
--- a/src/main/java/de/pixart/messenger/ui/PublishGroupChatProfilePictureActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/PublishGroupChatProfilePictureActivity.java
@@ -30,12 +30,12 @@
 package de.pixart.messenger.ui;
 
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.annotation.StringRes;
-import android.support.v7.widget.Toolbar;
+import androidx.annotation.StringRes;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.View;
 import android.widget.Toast;
diff --git a/src/main/java/de/pixart/messenger/ui/PublishProfilePictureActivity.java b/src/main/java/de/pixart/messenger/ui/PublishProfilePictureActivity.java
index db81e573b..960e19ac7 100644
--- a/src/main/java/de/pixart/messenger/ui/PublishProfilePictureActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/PublishProfilePictureActivity.java
@@ -4,7 +4,7 @@ import android.content.Intent;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.annotation.StringRes;
+import androidx.annotation.StringRes;
 import android.util.Log;
 import android.view.View;
 import android.view.View.OnLongClickListener;
diff --git a/src/main/java/de/pixart/messenger/ui/RecordingActivity.java b/src/main/java/de/pixart/messenger/ui/RecordingActivity.java
index 4e38fde4d..64c968117 100644
--- a/src/main/java/de/pixart/messenger/ui/RecordingActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/RecordingActivity.java
@@ -4,7 +4,7 @@ import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.media.MediaRecorder;
 import android.net.Uri;
 import android.os.Bundle;
diff --git a/src/main/java/de/pixart/messenger/ui/ScanActivity.java b/src/main/java/de/pixart/messenger/ui/ScanActivity.java
index 263b46492..9e24b5b4b 100644
--- a/src/main/java/de/pixart/messenger/ui/ScanActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ScanActivity.java
@@ -33,8 +33,8 @@ import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Process;
 import android.os.Vibrator;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.Surface;
diff --git a/src/main/java/de/pixart/messenger/ui/SearchActivity.java b/src/main/java/de/pixart/messenger/ui/SearchActivity.java
index b5d752522..3b837427d 100644
--- a/src/main/java/de/pixart/messenger/ui/SearchActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/SearchActivity.java
@@ -29,9 +29,9 @@
 
 package de.pixart.messenger.ui;
 
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Editable;
 import android.text.InputType;
 import android.text.TextWatcher;
diff --git a/src/main/java/de/pixart/messenger/ui/SetSettingsActivity.java b/src/main/java/de/pixart/messenger/ui/SetSettingsActivity.java
index 74786b6a9..1b04924d9 100644
--- a/src/main/java/de/pixart/messenger/ui/SetSettingsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/SetSettingsActivity.java
@@ -2,11 +2,11 @@ package de.pixart.messenger.ui;
 
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.View;
 
diff --git a/src/main/java/de/pixart/messenger/ui/SettingsActivity.java b/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
index 3c70ee089..26b1bfdd9 100644
--- a/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
@@ -1,7 +1,6 @@
 package de.pixart.messenger.ui;
 
 import android.app.FragmentManager;
-import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -16,9 +15,9 @@ import android.preference.Preference;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceManager;
 import android.preference.PreferenceScreen;
-import android.support.annotation.NonNull;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.AlertDialog;
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.AlertDialog;
 import android.util.Log;
 import android.widget.Toast;
 
diff --git a/src/main/java/de/pixart/messenger/ui/ShareLocationActivity.java b/src/main/java/de/pixart/messenger/ui/ShareLocationActivity.java
index 568370dff..92ed28ad2 100644
--- a/src/main/java/de/pixart/messenger/ui/ShareLocationActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShareLocationActivity.java
@@ -12,8 +12,8 @@ import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
 import android.provider.Settings;
-import android.support.design.widget.CoordinatorLayout;
-import android.support.design.widget.Snackbar;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import com.google.android.material.snackbar.Snackbar;
 import android.text.TextUtils;
 import android.webkit.WebView;
 import android.widget.Button;
diff --git a/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java b/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java
index 63c0dc323..badace094 100644
--- a/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java
@@ -4,8 +4,8 @@ import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
diff --git a/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java b/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java
index 9afb2659f..79834e5bf 100644
--- a/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java
@@ -4,7 +4,7 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.ActionBar;
+import androidx.appcompat.app.ActionBar;
 import android.view.inputmethod.InputMethodManager;
 
 import java.util.Arrays;
diff --git a/src/main/java/de/pixart/messenger/ui/ShowLocationActivity.java b/src/main/java/de/pixart/messenger/ui/ShowLocationActivity.java
index 26865aed0..3cf0da9e9 100644
--- a/src/main/java/de/pixart/messenger/ui/ShowLocationActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShowLocationActivity.java
@@ -11,7 +11,7 @@ import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.support.design.widget.FloatingActionButton;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.Menu;
diff --git a/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java b/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java
index 1918d73d0..0bfd93cf1 100644
--- a/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java
@@ -9,21 +9,21 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentManager;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v4.app.ListFragment;
-import android.support.v4.view.PagerAdapter;
-import android.support.v4.view.ViewPager;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.widget.Toolbar;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.fragment.app.ListFragment;
+import androidx.viewpager.widget.PagerAdapter;
+import androidx.viewpager.widget.ViewPager;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.widget.Toolbar;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.util.Log;
diff --git a/src/main/java/de/pixart/messenger/ui/StartUI.java b/src/main/java/de/pixart/messenger/ui/StartUI.java
index 8e8c0e9d1..7abfc0912 100644
--- a/src/main/java/de/pixart/messenger/ui/StartUI.java
+++ b/src/main/java/de/pixart/messenger/ui/StartUI.java
@@ -9,8 +9,8 @@ import android.content.res.Configuration;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.Settings;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatActivity;
 import android.util.Log;
 
 import java.util.List;
diff --git a/src/main/java/de/pixart/messenger/ui/TrustKeysActivity.java b/src/main/java/de/pixart/messenger/ui/TrustKeysActivity.java
index e8e17e287..7015d335b 100644
--- a/src/main/java/de/pixart/messenger/ui/TrustKeysActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/TrustKeysActivity.java
@@ -2,10 +2,10 @@ package de.pixart.messenger.ui;
 
 import android.app.AlertDialog;
 import android.content.Intent;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.os.Bundle;
-import android.support.v7.app.ActionBar;
-import android.support.v7.widget.Toolbar;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.widget.Toolbar;
 import android.util.Log;
 import android.view.Gravity;
 import android.view.Menu;
diff --git a/src/main/java/de/pixart/messenger/ui/UpdaterActivity.java b/src/main/java/de/pixart/messenger/ui/UpdaterActivity.java
index cc075b6aa..05fd94188 100644
--- a/src/main/java/de/pixart/messenger/ui/UpdaterActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/UpdaterActivity.java
@@ -13,8 +13,8 @@ import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.PowerManager;
-import android.support.v4.app.ActivityCompat;
-import android.support.v7.app.AlertDialog;
+import androidx.core.app.ActivityCompat;
+import androidx.appcompat.app.AlertDialog;
 import android.util.Log;
 import android.widget.TextView;
 import android.widget.Toast;
diff --git a/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java b/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java
index a7a22a10b..9b53d5d24 100644
--- a/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java
@@ -7,8 +7,8 @@ import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.AppCompatActivity;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.AppCompatActivity;
 import android.widget.Toast;
 
 import java.util.List;
diff --git a/src/main/java/de/pixart/messenger/ui/VerifyOTRActivity.java b/src/main/java/de/pixart/messenger/ui/VerifyOTRActivity.java
index e5367d567..931af60a9 100644
--- a/src/main/java/de/pixart/messenger/ui/VerifyOTRActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/VerifyOTRActivity.java
@@ -3,8 +3,8 @@ package de.pixart.messenger.ui;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AlertDialog;
 import android.util.Log;
 import android.view.Menu;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java b/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java
index 0ca7d5351..a46b24a5a 100644
--- a/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java
@@ -3,18 +3,15 @@ package de.pixart.messenger.ui;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import java.util.List;
-
 import de.pixart.messenger.R;
-import de.pixart.messenger.entities.Account;
 
 import static de.pixart.messenger.Config.DISALLOW_REGISTRATION_IN_UI;
 import static de.pixart.messenger.utils.PermissionUtils.allGranted;
diff --git a/src/main/java/de/pixart/messenger/ui/XmppActivity.java b/src/main/java/de/pixart/messenger/ui/XmppActivity.java
index 06f350385..79cfbac5e 100644
--- a/src/main/java/de/pixart/messenger/ui/XmppActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/XmppActivity.java
@@ -20,7 +20,7 @@ import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.graphics.Color;
 import android.graphics.Point;
@@ -38,12 +38,12 @@ import android.os.PowerManager;
 import android.os.SystemClock;
 import android.preference.PreferenceManager;
 import android.provider.Settings;
-import android.support.annotation.BoolRes;
-import android.support.annotation.NonNull;
-import android.support.annotation.StringRes;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.app.AlertDialog;
-import android.support.v7.app.AppCompatDelegate;
+import androidx.annotation.BoolRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.StringRes;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.AlertDialog;
+import androidx.appcompat.app.AppCompatDelegate;
 import android.text.InputType;
 import android.util.DisplayMetrics;
 import android.util.Log;
@@ -64,7 +64,6 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
-import java.util.concurrent.ExecutionException;
 import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.atomic.AtomicInteger;
 
@@ -75,7 +74,6 @@ import de.pixart.messenger.databinding.DialogQuickeditBinding;
 import de.pixart.messenger.entities.Account;
 import de.pixart.messenger.entities.Contact;
 import de.pixart.messenger.entities.Conversation;
-import de.pixart.messenger.entities.Conversational;
 import de.pixart.messenger.entities.Message;
 import de.pixart.messenger.entities.Presences;
 import de.pixart.messenger.services.AvatarService;
@@ -1169,8 +1167,7 @@ public abstract class XmppActivity extends ActionBarActivity {
                 imageView.setBackgroundColor(0xff333333);
                 imageView.setImageDrawable(null);
                 final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
-                final AsyncDrawable asyncDrawable = new AsyncDrawable(
-                        getResources(), null, task);
+                final AsyncDrawable asyncDrawable = new AsyncDrawable(getResources(), null, task);
                 imageView.setImageDrawable(asyncDrawable);
                 try {
                     task.execute(message);
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
index e37c0ea16..f43868f1f 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.ui.adapter;
 
-import android.databinding.DataBindingUtil;
-import android.support.annotation.NonNull;
+import androidx.databinding.DataBindingUtil;
+import androidx.annotation.NonNull;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/BackupFileAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/BackupFileAdapter.java
index 9a7f70d12..10592eee1 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/BackupFileAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/BackupFileAdapter.java
@@ -1,13 +1,13 @@
 package de.pixart.messenger.ui.adapter;
 
 import android.content.res.Resources;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
-import android.support.annotation.NonNull;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
 import android.text.format.DateUtils;
 import android.util.DisplayMetrics;
 import android.view.LayoutInflater;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/ChannelSearchResultAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/ChannelSearchResultAdapter.java
index dee701c9d..cf5986738 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/ChannelSearchResultAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/ChannelSearchResultAdapter.java
@@ -1,10 +1,10 @@
 package de.pixart.messenger.ui.adapter;
 
-import android.databinding.DataBindingUtil;
-import android.support.annotation.NonNull;
-import android.support.v7.recyclerview.extensions.ListAdapter;
-import android.support.v7.util.DiffUtil;
-import android.support.v7.widget.RecyclerView;
+import androidx.databinding.DataBindingUtil;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.ListAdapter;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.RecyclerView;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
index fe4218dd4..62bc711b2 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
@@ -1,12 +1,12 @@
 package de.pixart.messenger.ui.adapter;
 
 import android.content.SharedPreferences;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Typeface;
 import android.preference.PreferenceManager;
-import android.support.annotation.NonNull;
-import android.support.v4.content.ContextCompat;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.RecyclerView;
 import android.util.Pair;
 import android.view.LayoutInflater;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/KnownHostsAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/KnownHostsAdapter.java
index 2e0bfccc6..69067da79 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/KnownHostsAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/KnownHostsAdapter.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.ui.adapter;
 
 import android.content.Context;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.widget.ArrayAdapter;
 import android.widget.Filter;
 
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
index 250dcc1cd..a6387d182 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.ui.adapter;
 
 import android.content.SharedPreferences;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.preference.PreferenceManager;
 import android.view.LayoutInflater;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
index 847ab35cf..1551f6021 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MediaAdapter.java
@@ -2,15 +2,15 @@ package de.pixart.messenger.ui.adapter;
 
 import android.content.Context;
 import android.content.res.Resources;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
-import android.support.annotation.AttrRes;
-import android.support.annotation.DimenRes;
-import android.support.annotation.NonNull;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.AttrRes;
+import androidx.annotation.DimenRes;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
 import android.widget.ImageView;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
index f27158927..4a636dde2 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
@@ -2,13 +2,13 @@ package de.pixart.messenger.ui.adapter;
 
 import android.content.Context;
 import android.content.res.Resources;
-import android.databinding.DataBindingUtil;
+import androidx.databinding.DataBindingUtil;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
-import android.support.annotation.NonNull;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
 import android.widget.ImageView;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
index e3719d205..5e7c5962f 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
@@ -9,8 +9,8 @@ import android.graphics.Rect;
 import android.graphics.Typeface;
 import android.net.Uri;
 import android.preference.PreferenceManager;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import android.text.Editable;
 import android.text.Spannable;
 import android.text.SpannableString;
@@ -1035,8 +1035,7 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
 
         viewHolder.contact_picture.setOnClickListener(v -> {
             if (MessageAdapter.this.mOnContactPictureClickedListener != null) {
-                MessageAdapter.this.mOnContactPictureClickedListener
-                        .onContactPictureClicked(message);
+                MessageAdapter.this.mOnContactPictureClickedListener.onContactPictureClicked(message);
             }
 
         });
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/PresenceTemplateAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/PresenceTemplateAdapter.java
index 8fe84af5b..8b0253d05 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/PresenceTemplateAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/PresenceTemplateAdapter.java
@@ -30,7 +30,7 @@
 package de.pixart.messenger.ui.adapter;
 
 import android.content.Context;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.widget.ArrayAdapter;
 import android.widget.Filter;
 
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/UserAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/UserAdapter.java
index 9677aa61d..22f292024 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/UserAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/UserAdapter.java
@@ -2,11 +2,11 @@ package de.pixart.messenger.ui.adapter;
 
 import android.app.PendingIntent;
 import android.content.IntentSender;
-import android.databinding.DataBindingUtil;
-import android.support.annotation.NonNull;
-import android.support.v7.recyclerview.extensions.ListAdapter;
-import android.support.v7.util.DiffUtil;
-import android.support.v7.widget.RecyclerView;
+import androidx.databinding.DataBindingUtil;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.ListAdapter;
+import androidx.recyclerview.widget.DiffUtil;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.ContextMenu;
 import android.view.LayoutInflater;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/adapter/UserPreviewAdapter.java b/src/main/java/de/pixart/messenger/ui/adapter/UserPreviewAdapter.java
index 0a0e9f587..ff06832ce 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/UserPreviewAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/UserPreviewAdapter.java
@@ -1,9 +1,9 @@
 package de.pixart.messenger.ui.adapter;
 
-import android.databinding.DataBindingUtil;
-import android.support.annotation.NonNull;
-import android.support.v7.recyclerview.extensions.ListAdapter;
-import android.support.v7.widget.RecyclerView;
+import androidx.databinding.DataBindingUtil;
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.ListAdapter;
+import androidx.recyclerview.widget.RecyclerView;
 import android.view.ContextMenu;
 import android.view.LayoutInflater;
 import android.view.View;
diff --git a/src/main/java/de/pixart/messenger/ui/interfaces/OnAvatarPublication.java b/src/main/java/de/pixart/messenger/ui/interfaces/OnAvatarPublication.java
index 86df8d420..e4b04ea63 100644
--- a/src/main/java/de/pixart/messenger/ui/interfaces/OnAvatarPublication.java
+++ b/src/main/java/de/pixart/messenger/ui/interfaces/OnAvatarPublication.java
@@ -28,7 +28,7 @@
  */
 package de.pixart.messenger.ui.interfaces;
 
-import android.support.annotation.StringRes;
+import androidx.annotation.StringRes;
 
 public interface OnAvatarPublication {
 
diff --git a/src/main/java/de/pixart/messenger/ui/text/QuoteSpan.java b/src/main/java/de/pixart/messenger/ui/text/QuoteSpan.java
index e4cd5f2b5..77c638f84 100644
--- a/src/main/java/de/pixart/messenger/ui/text/QuoteSpan.java
+++ b/src/main/java/de/pixart/messenger/ui/text/QuoteSpan.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.ui.text;
 
 import android.graphics.Canvas;
 import android.graphics.Paint;
-import android.support.annotation.ColorInt;
+import androidx.annotation.ColorInt;
 import android.text.Layout;
 import android.text.TextPaint;
 import android.text.style.CharacterStyle;
diff --git a/src/main/java/de/pixart/messenger/ui/util/AvatarWorkerTask.java b/src/main/java/de/pixart/messenger/ui/util/AvatarWorkerTask.java
index afddb7e8b..54cb3c2a1 100644
--- a/src/main/java/de/pixart/messenger/ui/util/AvatarWorkerTask.java
+++ b/src/main/java/de/pixart/messenger/ui/util/AvatarWorkerTask.java
@@ -5,7 +5,7 @@ import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
-import android.support.annotation.DimenRes;
+import androidx.annotation.DimenRes;
 import android.widget.ImageView;
 
 import java.lang.ref.WeakReference;
diff --git a/src/main/java/de/pixart/messenger/ui/util/ConversationMenuConfigurator.java b/src/main/java/de/pixart/messenger/ui/util/ConversationMenuConfigurator.java
index 07a03fbab..39fc09241 100644
--- a/src/main/java/de/pixart/messenger/ui/util/ConversationMenuConfigurator.java
+++ b/src/main/java/de/pixart/messenger/ui/util/ConversationMenuConfigurator.java
@@ -31,7 +31,7 @@ package de.pixart.messenger.ui.util;
 
 import android.content.Context;
 import android.content.pm.PackageManager;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.view.Menu;
 import android.view.MenuItem;
 
diff --git a/src/main/java/de/pixart/messenger/ui/util/DelayedHintHelper.java b/src/main/java/de/pixart/messenger/ui/util/DelayedHintHelper.java
index c289b6673..23da87a50 100644
--- a/src/main/java/de/pixart/messenger/ui/util/DelayedHintHelper.java
+++ b/src/main/java/de/pixart/messenger/ui/util/DelayedHintHelper.java
@@ -30,7 +30,7 @@
 package de.pixart.messenger.ui.util;
 
 import android.os.Handler;
-import android.support.annotation.StringRes;
+import androidx.annotation.StringRes;
 import android.widget.EditText;
 
 public class DelayedHintHelper {
diff --git a/src/main/java/de/pixart/messenger/ui/util/GridManager.java b/src/main/java/de/pixart/messenger/ui/util/GridManager.java
index 9cad626ff..aa88e98d9 100644
--- a/src/main/java/de/pixart/messenger/ui/util/GridManager.java
+++ b/src/main/java/de/pixart/messenger/ui/util/GridManager.java
@@ -1,9 +1,9 @@
 package de.pixart.messenger.ui.util;
 
 import android.content.Context;
-import android.support.annotation.DimenRes;
-import android.support.v7.widget.GridLayoutManager;
-import android.support.v7.widget.RecyclerView;
+import androidx.annotation.DimenRes;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 import android.util.Log;
 import android.view.ViewTreeObserver;
 
diff --git a/src/main/java/de/pixart/messenger/ui/util/JidDialog.java b/src/main/java/de/pixart/messenger/ui/util/JidDialog.java
index 291bb873c..1101f7b70 100644
--- a/src/main/java/de/pixart/messenger/ui/util/JidDialog.java
+++ b/src/main/java/de/pixart/messenger/ui/util/JidDialog.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.ui.util;
 
 import android.content.Context;
-import android.support.annotation.StringRes;
+import androidx.annotation.StringRes;
 import android.text.SpannableString;
 import android.text.Spanned;
 import android.text.style.TypefaceSpan;
diff --git a/src/main/java/de/pixart/messenger/ui/util/MucConfiguration.java b/src/main/java/de/pixart/messenger/ui/util/MucConfiguration.java
index 6c3235d5a..1d4f4168b 100644
--- a/src/main/java/de/pixart/messenger/ui/util/MucConfiguration.java
+++ b/src/main/java/de/pixart/messenger/ui/util/MucConfiguration.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.ui.util;
 
 import android.content.Context;
 import android.os.Bundle;
-import android.support.annotation.StringRes;
+import androidx.annotation.StringRes;
 
 import de.pixart.messenger.R;
 import de.pixart.messenger.entities.MucOptions;
diff --git a/src/main/java/de/pixart/messenger/ui/util/MucDetailsContextMenuHelper.java b/src/main/java/de/pixart/messenger/ui/util/MucDetailsContextMenuHelper.java
index 2e01a6f7e..2abff6973 100644
--- a/src/main/java/de/pixart/messenger/ui/util/MucDetailsContextMenuHelper.java
+++ b/src/main/java/de/pixart/messenger/ui/util/MucDetailsContextMenuHelper.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.ui.util;
 
 import android.app.Activity;
 import android.preference.PreferenceManager;
-import android.support.v7.app.AlertDialog;
+import androidx.appcompat.app.AlertDialog;
 import android.text.SpannableString;
 import android.text.Spanned;
 import android.text.style.TypefaceSpan;
diff --git a/src/main/java/de/pixart/messenger/ui/util/SoftKeyboardUtils.java b/src/main/java/de/pixart/messenger/ui/util/SoftKeyboardUtils.java
index 86753ac4a..01da1080d 100644
--- a/src/main/java/de/pixart/messenger/ui/util/SoftKeyboardUtils.java
+++ b/src/main/java/de/pixart/messenger/ui/util/SoftKeyboardUtils.java
@@ -30,7 +30,7 @@ package de.pixart.messenger.ui.util;
 
 import android.app.Activity;
 import android.content.Context;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.EditText;
diff --git a/src/main/java/de/pixart/messenger/ui/util/StyledAttributes.java b/src/main/java/de/pixart/messenger/ui/util/StyledAttributes.java
index cd4ad3e49..9d627edd8 100644
--- a/src/main/java/de/pixart/messenger/ui/util/StyledAttributes.java
+++ b/src/main/java/de/pixart/messenger/ui/util/StyledAttributes.java
@@ -32,8 +32,8 @@ package de.pixart.messenger.ui.util;
 
 import android.content.Context;
 import android.content.res.TypedArray;
-import android.support.annotation.AttrRes;
-import android.support.annotation.ColorInt;
+import androidx.annotation.AttrRes;
+import androidx.annotation.ColorInt;
 
 public class StyledAttributes {
     public static android.graphics.drawable.Drawable getDrawable(Context context, @AttrRes int id) {
diff --git a/src/main/java/de/pixart/messenger/ui/widget/CopyTextView.java b/src/main/java/de/pixart/messenger/ui/widget/CopyTextView.java
index 683c65ec0..a6a85f884 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/CopyTextView.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/CopyTextView.java
@@ -4,7 +4,7 @@ import android.annotation.SuppressLint;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
-import android.support.v7.widget.AppCompatTextView;
+import androidx.appcompat.widget.AppCompatTextView;
 import android.util.AttributeSet;
 
 @SuppressLint("AppCompatCustomView")
diff --git a/src/main/java/de/pixart/messenger/ui/widget/EditMessage.java b/src/main/java/de/pixart/messenger/ui/widget/EditMessage.java
index ca61491a9..09bffad91 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/EditMessage.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/EditMessage.java
@@ -6,9 +6,9 @@ import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.preference.PreferenceManager;
-import android.support.v13.view.inputmethod.EditorInfoCompat;
-import android.support.v13.view.inputmethod.InputConnectionCompat;
-import android.support.v13.view.inputmethod.InputContentInfoCompat;
+import androidx.core.view.inputmethod.EditorInfoCompat;
+import androidx.core.view.inputmethod.InputConnectionCompat;
+import androidx.core.view.inputmethod.InputContentInfoCompat;
 import android.text.Editable;
 import android.text.InputFilter;
 import android.text.InputType;
diff --git a/src/main/java/de/pixart/messenger/ui/widget/EmojiWrapperEditText.java b/src/main/java/de/pixart/messenger/ui/widget/EmojiWrapperEditText.java
index 38ce53299..7d4a06b28 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/EmojiWrapperEditText.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/EmojiWrapperEditText.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.ui.widget;
 
 import android.content.Context;
-import android.support.text.emoji.widget.EmojiAppCompatEditText;
+import androidx.emoji.widget.EmojiAppCompatEditText;
 import android.util.AttributeSet;
 
 public class EmojiWrapperEditText extends EmojiAppCompatEditText {
diff --git a/src/main/java/de/pixart/messenger/ui/widget/FailedCountCustomView.java b/src/main/java/de/pixart/messenger/ui/widget/FailedCountCustomView.java
index 261ace3a4..366b75c10 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/FailedCountCustomView.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/FailedCountCustomView.java
@@ -6,7 +6,7 @@ import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Typeface;
-import android.support.v4.content.ContextCompat;
+import androidx.core.content.ContextCompat;
 import android.util.AttributeSet;
 import android.view.View;
 
diff --git a/src/main/java/de/pixart/messenger/ui/widget/ImmediateAutoCompleteTextView.java b/src/main/java/de/pixart/messenger/ui/widget/ImmediateAutoCompleteTextView.java
index 3cdfffabe..fb5a0391e 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/ImmediateAutoCompleteTextView.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/ImmediateAutoCompleteTextView.java
@@ -31,7 +31,7 @@ package de.pixart.messenger.ui.widget;
 import android.content.Context;
 import android.util.AttributeSet;
 
-public class ImmediateAutoCompleteTextView extends android.support.v7.widget.AppCompatAutoCompleteTextView {
+public class ImmediateAutoCompleteTextView extends androidx.appcompat.widget.AppCompatAutoCompleteTextView {
 
     public ImmediateAutoCompleteTextView(Context context, AttributeSet attrs) {
         super(context, attrs);
diff --git a/src/main/java/de/pixart/messenger/ui/widget/RichLinkView.java b/src/main/java/de/pixart/messenger/ui/widget/RichLinkView.java
index bffc48473..c27b08cf2 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/RichLinkView.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/RichLinkView.java
@@ -5,9 +5,8 @@ import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Build;
-import android.support.annotation.RequiresApi;
+import androidx.annotation.RequiresApi;
 import android.util.AttributeSet;
-import android.util.DisplayMetrics;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
diff --git a/src/main/java/de/pixart/messenger/ui/widget/TextInputEditText.java b/src/main/java/de/pixart/messenger/ui/widget/TextInputEditText.java
index 51ad578df..62f384d90 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/TextInputEditText.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/TextInputEditText.java
@@ -11,7 +11,7 @@ import java.lang.reflect.Field;
  * A wrapper class to fix some weird fuck ups on Meizu devices
  * credit goes to the people in this thread https://github.com/android-in-china/Compatibility/issues/11
  */
-public class TextInputEditText extends android.support.design.widget.TextInputEditText {
+public class TextInputEditText extends com.google.android.material.textfield.TextInputEditText {
 
     public TextInputEditText(Context context) {
         super(context);
diff --git a/src/main/java/de/pixart/messenger/ui/widget/UnreadCountCustomView.java b/src/main/java/de/pixart/messenger/ui/widget/UnreadCountCustomView.java
index 93cf0bd36..ae6c968f9 100644
--- a/src/main/java/de/pixart/messenger/ui/widget/UnreadCountCustomView.java
+++ b/src/main/java/de/pixart/messenger/ui/widget/UnreadCountCustomView.java
@@ -6,7 +6,7 @@ import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Typeface;
-import android.support.v4.content.ContextCompat;
+import androidx.core.content.ContextCompat;
 import android.util.AttributeSet;
 import android.view.View;
 
diff --git a/src/main/java/de/pixart/messenger/utils/Compatibility.java b/src/main/java/de/pixart/messenger/utils/Compatibility.java
index a57835101..38e331638 100644
--- a/src/main/java/de/pixart/messenger/utils/Compatibility.java
+++ b/src/main/java/de/pixart/messenger/utils/Compatibility.java
@@ -10,8 +10,8 @@ import android.preference.Preference;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceManager;
 import android.preference.PreferenceScreen;
-import android.support.annotation.BoolRes;
-import android.support.v4.content.ContextCompat;
+import androidx.annotation.BoolRes;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 
 import java.util.Arrays;
diff --git a/src/main/java/de/pixart/messenger/utils/EmojiWrapper.java b/src/main/java/de/pixart/messenger/utils/EmojiWrapper.java
index d30c68a97..e6725e744 100644
--- a/src/main/java/de/pixart/messenger/utils/EmojiWrapper.java
+++ b/src/main/java/de/pixart/messenger/utils/EmojiWrapper.java
@@ -28,7 +28,7 @@
  */
 package de.pixart.messenger.utils;
 
-import android.support.text.emoji.EmojiCompat;
+import androidx.emoji.text.EmojiCompat;
 
 public class EmojiWrapper {
 
diff --git a/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java b/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java
index 428aa616e..0cdf2a26d 100644
--- a/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java
@@ -7,7 +7,7 @@ import android.content.pm.PackageManager;
 import android.content.pm.Signature;
 import android.os.Build;
 import android.preference.PreferenceManager;
-import android.support.v7.app.AlertDialog;
+import androidx.appcompat.app.AlertDialog;
 import android.util.Log;
 
 import java.io.BufferedReader;
diff --git a/src/main/java/de/pixart/messenger/utils/IrregularUnicodeDetector.java b/src/main/java/de/pixart/messenger/utils/IrregularUnicodeDetector.java
index 3775494e7..170b7e994 100644
--- a/src/main/java/de/pixart/messenger/utils/IrregularUnicodeDetector.java
+++ b/src/main/java/de/pixart/messenger/utils/IrregularUnicodeDetector.java
@@ -32,7 +32,7 @@ package de.pixart.messenger.utils;
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.os.Build;
-import android.support.annotation.ColorInt;
+import androidx.annotation.ColorInt;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.SpannableStringBuilder;
diff --git a/src/main/java/de/pixart/messenger/utils/Resolver.java b/src/main/java/de/pixart/messenger/utils/Resolver.java
index 9d2d90838..30caa3a4a 100644
--- a/src/main/java/de/pixart/messenger/utils/Resolver.java
+++ b/src/main/java/de/pixart/messenger/utils/Resolver.java
@@ -2,7 +2,7 @@ package de.pixart.messenger.utils;
 
 import android.content.ContentValues;
 import android.database.Cursor;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.io.IOException;
diff --git a/src/main/java/de/pixart/messenger/utils/SSLSocketHelper.java b/src/main/java/de/pixart/messenger/utils/SSLSocketHelper.java
index ce8aa009f..0a1ea6801 100644
--- a/src/main/java/de/pixart/messenger/utils/SSLSocketHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/SSLSocketHelper.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.utils;
 
 import android.os.Build;
-import android.support.annotation.RequiresApi;
+import androidx.annotation.RequiresApi;
 import android.util.Log;
 
 import org.conscrypt.Conscrypt;
diff --git a/src/main/java/de/pixart/messenger/utils/StylingHelper.java b/src/main/java/de/pixart/messenger/utils/StylingHelper.java
index be430e584..7901c0c94 100644
--- a/src/main/java/de/pixart/messenger/utils/StylingHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/StylingHelper.java
@@ -32,8 +32,8 @@ package de.pixart.messenger.utils;
 import android.content.Context;
 import android.graphics.Color;
 import android.graphics.Typeface;
-import android.support.annotation.ColorInt;
-import android.support.v4.content.ContextCompat;
+import androidx.annotation.ColorInt;
+import androidx.core.content.ContextCompat;
 import android.text.Editable;
 import android.text.ParcelableSpan;
 import android.text.Spannable;
diff --git a/src/main/java/de/pixart/messenger/utils/ThemeHelper.java b/src/main/java/de/pixart/messenger/utils/ThemeHelper.java
index b83631623..b73559529 100644
--- a/src/main/java/de/pixart/messenger/utils/ThemeHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/ThemeHelper.java
@@ -35,9 +35,9 @@ import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.preference.PreferenceManager;
-import android.support.annotation.StyleRes;
-import android.support.design.widget.Snackbar;
-import android.support.v4.content.ContextCompat;
+import androidx.annotation.StyleRes;
+import com.google.android.material.snackbar.Snackbar;
+import androidx.core.content.ContextCompat;
 import android.util.TypedValue;
 import android.widget.TextView;
 
@@ -112,8 +112,8 @@ public class ThemeHelper {
         final float size = typedArray.getDimension(0, 0f);
         typedArray.recycle();
         if (size != 0f) {
-            final TextView text = snackbar.getView().findViewById(android.support.design.R.id.snackbar_text);
-            final TextView action = snackbar.getView().findViewById(android.support.design.R.id.snackbar_action);
+            final TextView text = snackbar.getView().findViewById(com.google.android.material.R.id.snackbar_text);
+            final TextView action = snackbar.getView().findViewById(com.google.android.material.R.id.snackbar_action);
             if (text != null && action != null) {
                 text.setTextSize(TypedValue.COMPLEX_UNIT_PX, size);
                 action.setTextSize(TypedValue.COMPLEX_UNIT_PX, size);
diff --git a/src/main/java/de/pixart/messenger/utils/TimeframeUtils.java b/src/main/java/de/pixart/messenger/utils/TimeframeUtils.java
index 316733b54..3301ddf70 100644
--- a/src/main/java/de/pixart/messenger/utils/TimeframeUtils.java
+++ b/src/main/java/de/pixart/messenger/utils/TimeframeUtils.java
@@ -29,7 +29,7 @@
 package de.pixart.messenger.utils;
 
 import android.content.Context;
-import android.support.annotation.PluralsRes;
+import androidx.annotation.PluralsRes;
 
 import de.pixart.messenger.R;
 
diff --git a/src/main/java/de/pixart/messenger/utils/UIHelper.java b/src/main/java/de/pixart/messenger/utils/UIHelper.java
index 590085ff5..102848183 100644
--- a/src/main/java/de/pixart/messenger/utils/UIHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/UIHelper.java
@@ -1,7 +1,7 @@
 package de.pixart.messenger.utils;
 
 import android.content.Context;
-import android.support.annotation.ColorInt;
+import androidx.annotation.ColorInt;
 import android.text.SpannableStringBuilder;
 import android.text.format.DateFormat;
 import android.text.format.DateUtils;
diff --git a/src/main/java/de/pixart/messenger/xml/Element.java b/src/main/java/de/pixart/messenger/xml/Element.java
index 052dd7947..8cab1de79 100644
--- a/src/main/java/de/pixart/messenger/xml/Element.java
+++ b/src/main/java/de/pixart/messenger/xml/Element.java
@@ -1,12 +1,10 @@
 package de.pixart.messenger.xml;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.Hashtable;
 import java.util.List;
-import java.util.Locale;
 
 import de.pixart.messenger.utils.XmlHelper;
 import de.pixart.messenger.xmpp.InvalidJid;
diff --git a/src/main/java/de/pixart/messenger/xmpp/InvalidJid.java b/src/main/java/de/pixart/messenger/xmpp/InvalidJid.java
index fdaadeab2..624e6b463 100644
--- a/src/main/java/de/pixart/messenger/xmpp/InvalidJid.java
+++ b/src/main/java/de/pixart/messenger/xmpp/InvalidJid.java
@@ -29,7 +29,7 @@
 
 package de.pixart.messenger.xmpp;
 
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 
 import de.pixart.messenger.xmpp.stanzas.AbstractStanza;
 import rocks.xmpp.addr.Jid;
diff --git a/src/main/java/de/pixart/messenger/xmpp/XmppConnection.java b/src/main/java/de/pixart/messenger/xmpp/XmppConnection.java
index 571297851..1445b9b67 100644
--- a/src/main/java/de/pixart/messenger/xmpp/XmppConnection.java
+++ b/src/main/java/de/pixart/messenger/xmpp/XmppConnection.java
@@ -5,7 +5,7 @@ import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.SystemClock;
 import android.security.KeyChain;
-import android.support.annotation.NonNull;
+import androidx.annotation.NonNull;
 import android.util.Base64;
 import android.util.Log;
 import android.util.Pair;