optimize imports

45 files changed, 2 insertions, 145 deletions

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 885db348d..1a3c4436e 100644
--- a/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
+++ b/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
@@ -46,7 +46,6 @@ import de.pixart.messenger.entities.Message;
 import de.pixart.messenger.parser.IqParser;
 import de.pixart.messenger.services.XmppConnectionService;
 import de.pixart.messenger.utils.CryptoHelper;
-import de.pixart.messenger.utils.Namespace;
 import de.pixart.messenger.utils.SerialSingleThreadExecutor;
 import de.pixart.messenger.xml.Element;
 import de.pixart.messenger.xmpp.OnAdvancedStreamFeaturesLoaded;
diff --git a/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlMessage.java b/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlMessage.java
index 100ad1c43..60aa1e357 100644
--- a/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlMessage.java
+++ b/src/main/java/de/pixart/messenger/crypto/axolotl/XmppAxolotlMessage.java
@@ -2,7 +2,6 @@ package de.pixart.messenger.crypto.axolotl;
 
 import android.util.Base64;
 import android.util.Log;
-import android.util.SparseArray;
 
 import java.security.InvalidAlgorithmParameterException;
 import java.security.InvalidKeyException;
diff --git a/src/main/java/de/pixart/messenger/entities/Contact.java b/src/main/java/de/pixart/messenger/entities/Contact.java
index ad9aeeb13..8768191ad 100644
--- a/src/main/java/de/pixart/messenger/entities/Contact.java
+++ b/src/main/java/de/pixart/messenger/entities/Contact.java
@@ -4,7 +4,6 @@ import android.content.ContentValues;
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
-import android.provider.ContactsContract;
 import android.support.annotation.NonNull;
 import android.text.TextUtils;
 
diff --git a/src/main/java/de/pixart/messenger/entities/Conversation.java b/src/main/java/de/pixart/messenger/entities/Conversation.java
index 65d9de107..121e9ed06 100644
--- a/src/main/java/de/pixart/messenger/entities/Conversation.java
+++ b/src/main/java/de/pixart/messenger/entities/Conversation.java
@@ -28,7 +28,6 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import de.pixart.messenger.Config;
 import de.pixart.messenger.crypto.OmemoSetting;
 import de.pixart.messenger.crypto.PgpDecryptionService;
-import de.pixart.messenger.crypto.axolotl.AxolotlService;
 import de.pixart.messenger.persistance.DatabaseBackend;
 import de.pixart.messenger.services.AvatarService;
 import de.pixart.messenger.services.QuickConversationsService;
diff --git a/src/main/java/de/pixart/messenger/http/HttpConnectionManager.java b/src/main/java/de/pixart/messenger/http/HttpConnectionManager.java
index 0bf0e274e..84c4aa1bb 100644
--- a/src/main/java/de/pixart/messenger/http/HttpConnectionManager.java
+++ b/src/main/java/de/pixart/messenger/http/HttpConnectionManager.java
@@ -13,7 +13,6 @@ import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.CopyOnWriteArrayList;
 
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.HttpsURLConnection;
diff --git a/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java b/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
index 1074c1982..457292e27 100644
--- a/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
+++ b/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
@@ -25,7 +25,6 @@ import de.pixart.messenger.entities.Account;
 import de.pixart.messenger.entities.DownloadableFile;
 import de.pixart.messenger.entities.Message;
 import de.pixart.messenger.entities.Transferable;
-import de.pixart.messenger.entities.TransferablePlaceholder;
 import de.pixart.messenger.persistance.FileBackend;
 import de.pixart.messenger.services.AbstractConnectionManager;
 import de.pixart.messenger.services.XmppConnectionService;
diff --git a/src/main/java/de/pixart/messenger/persistance/FileBackend.java b/src/main/java/de/pixart/messenger/persistance/FileBackend.java
index fae15dbda..0023eec37 100644
--- a/src/main/java/de/pixart/messenger/persistance/FileBackend.java
+++ b/src/main/java/de/pixart/messenger/persistance/FileBackend.java
@@ -3,7 +3,6 @@ package de.pixart.messenger.persistance;
 import android.annotation.TargetApi;
 import android.content.ContentResolver;
 import android.content.Context;
-import android.content.Intent;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.database.Cursor;
diff --git a/src/main/java/de/pixart/messenger/services/AvatarService.java b/src/main/java/de/pixart/messenger/services/AvatarService.java
index da5c449f9..b37811b7f 100644
--- a/src/main/java/de/pixart/messenger/services/AvatarService.java
+++ b/src/main/java/de/pixart/messenger/services/AvatarService.java
@@ -3,7 +3,6 @@ package de.pixart.messenger.services;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.PorterDuff;
@@ -39,13 +38,11 @@ import de.pixart.messenger.entities.Conversational;
 import de.pixart.messenger.entities.ListItem;
 import de.pixart.messenger.entities.Message;
 import de.pixart.messenger.entities.MucOptions;
-import de.pixart.messenger.ui.ConferenceDetailsActivity;
 import de.pixart.messenger.utils.UIHelper;
 import de.pixart.messenger.xmpp.OnAdvancedStreamFeaturesLoaded;
 import de.pixart.messenger.xmpp.XmppConnection;
 import rocks.xmpp.addr.Jid;
 
-import static de.pixart.messenger.Config.SYSTEM_UI_AVATAR_SIZE;
 import static de.pixart.messenger.ui.SettingsActivity.PREFER_XMPP_AVATAR;
 
 public class AvatarService implements OnAdvancedStreamFeaturesLoaded {
diff --git a/src/main/java/de/pixart/messenger/services/EventReceiver.java b/src/main/java/de/pixart/messenger/services/EventReceiver.java
index 8b3a6b415..145c9893b 100644
--- a/src/main/java/de/pixart/messenger/services/EventReceiver.java
+++ b/src/main/java/de/pixart/messenger/services/EventReceiver.java
@@ -4,7 +4,6 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.preference.PreferenceManager;
-import android.support.v4.content.ContextCompat;
 import android.util.Log;
 
 import de.pixart.messenger.Config;
diff --git a/src/main/java/de/pixart/messenger/services/ImportBackupService.java b/src/main/java/de/pixart/messenger/services/ImportBackupService.java
index 72eab6140..1b28640e5 100644
--- a/src/main/java/de/pixart/messenger/services/ImportBackupService.java
+++ b/src/main/java/de/pixart/messenger/services/ImportBackupService.java
@@ -34,7 +34,6 @@ import javax.crypto.CipherInputStream;
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
 
-
 import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
 import de.pixart.messenger.persistance.DatabaseBackend;
diff --git a/src/main/java/de/pixart/messenger/services/NotificationService.java b/src/main/java/de/pixart/messenger/services/NotificationService.java
index 7b2dc2122..d045879be 100644
--- a/src/main/java/de/pixart/messenger/services/NotificationService.java
+++ b/src/main/java/de/pixart/messenger/services/NotificationService.java
@@ -57,14 +57,12 @@ import de.pixart.messenger.entities.Message;
 import de.pixart.messenger.persistance.FileBackend;
 import de.pixart.messenger.ui.ConversationsActivity;
 import de.pixart.messenger.ui.EditAccountActivity;
-import de.pixart.messenger.ui.ManageAccountActivity;
 import de.pixart.messenger.ui.TimePreference;
 import de.pixart.messenger.utils.AccountUtils;
 import de.pixart.messenger.utils.Compatibility;
 import de.pixart.messenger.utils.GeoHelper;
 import de.pixart.messenger.utils.UIHelper;
 import de.pixart.messenger.xmpp.XmppConnection;
-import rocks.xmpp.addr.Jid;
 
 public class NotificationService {
 
diff --git a/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java b/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java
index e2021e7ea..df9113448 100644
--- a/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ChangePasswordActivity.java
@@ -5,7 +5,6 @@ import android.os.Bundle;
 import android.support.design.widget.TextInputLayout;
 import android.view.View;
 import android.widget.Button;
-import android.widget.EditText;
 import android.widget.Toast;
 
 import de.pixart.messenger.R;
diff --git a/src/main/java/de/pixart/messenger/ui/ConversationFragment.java b/src/main/java/de/pixart/messenger/ui/ConversationFragment.java
index 946e45fcc..94ddc3f8e 100644
--- a/src/main/java/de/pixart/messenger/ui/ConversationFragment.java
+++ b/src/main/java/de/pixart/messenger/ui/ConversationFragment.java
@@ -91,7 +91,6 @@ import de.pixart.messenger.entities.TransferablePlaceholder;
 import de.pixart.messenger.http.HttpDownloadConnection;
 import de.pixart.messenger.persistance.FileBackend;
 import de.pixart.messenger.services.MessageArchiveService;
-import de.pixart.messenger.services.QuickConversationsService;
 import de.pixart.messenger.services.XmppConnectionService;
 import de.pixart.messenger.ui.adapter.MediaPreviewAdapter;
 import de.pixart.messenger.ui.adapter.MessageAdapter;
@@ -110,7 +109,6 @@ import de.pixart.messenger.ui.util.SendButtonTool;
 import de.pixart.messenger.ui.util.ShareUtil;
 import de.pixart.messenger.ui.util.ViewUtil;
 import de.pixart.messenger.ui.widget.EditMessage;
-import de.pixart.messenger.utils.AccountUtils;
 import de.pixart.messenger.utils.Compatibility;
 import de.pixart.messenger.utils.GeoHelper;
 import de.pixart.messenger.utils.MenuDoubleTabUtil;
diff --git a/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java b/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
index 7d95c901b..e7343ce63 100644
--- a/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
@@ -75,7 +75,6 @@ import de.pixart.messenger.entities.Account;
 import de.pixart.messenger.entities.Conversation;
 import de.pixart.messenger.entities.MucOptions;
 import de.pixart.messenger.entities.Presence;
-import de.pixart.messenger.services.EmojiService;
 import de.pixart.messenger.services.XmppConnectionService;
 import de.pixart.messenger.ui.interfaces.OnBackendConnected;
 import de.pixart.messenger.ui.interfaces.OnConversationArchived;
@@ -96,7 +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_BUNDLED_EMOJIS;
 
 public class ConversationsActivity extends XmppActivity implements OnConversationSelected, OnConversationArchived, OnConversationsListItemUpdated, OnConversationRead, XmppConnectionService.OnAccountUpdate, XmppConnectionService.OnConversationUpdate, XmppConnectionService.OnRosterUpdate, OnUpdateBlocklist, XmppConnectionService.OnShowErrorToast, XmppConnectionService.OnAffiliationChanged {
 
diff --git a/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java b/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java
index a4ecc6751..cbaf3468c 100644
--- a/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java
+++ b/src/main/java/de/pixart/messenger/ui/CreatePublicChannelDialog.java
@@ -15,7 +15,6 @@ import android.text.TextWatcher;
 import android.view.View;
 import android.widget.AdapterView;
 import android.widget.Button;
-import android.widget.Spinner;
 
 import java.security.SecureRandom;
 import java.util.ArrayList;
diff --git a/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java b/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java
index 47a7b2173..117a33315 100644
--- a/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/EditAccountActivity.java
@@ -30,7 +30,6 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
-import android.widget.CompoundButton;
 import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.EditText;
 import android.widget.ImageView;
diff --git a/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java b/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java
index ac400b9f3..a1a6b28b5 100644
--- a/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/EnterNameActivity.java
@@ -7,6 +7,7 @@ import android.support.v7.widget.Toolbar;
 import android.view.View;
 
 import java.util.concurrent.atomic.AtomicBoolean;
+
 import de.pixart.messenger.R;
 import de.pixart.messenger.databinding.ActivityEnterNameBinding;
 import de.pixart.messenger.entities.Account;
diff --git a/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java b/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java
index f66d8f47c..5397eeaf2 100644
--- a/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ImportBackupActivity.java
@@ -2,7 +2,6 @@ package de.pixart.messenger.ui;
 
 import android.content.ComponentName;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.databinding.DataBindingUtil;
@@ -15,7 +14,6 @@ import android.support.v7.widget.Toolbar;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
-import android.widget.Toast;
 
 import java.util.List;
 
diff --git a/src/main/java/de/pixart/messenger/ui/LocationActivity.java b/src/main/java/de/pixart/messenger/ui/LocationActivity.java
index ec8893e5e..c7668a142 100644
--- a/src/main/java/de/pixart/messenger/ui/LocationActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/LocationActivity.java
@@ -8,7 +8,6 @@ import android.location.LocationListener;
 import android.location.LocationManager;
 import android.os.Bundle;
 import android.support.v4.app.ActivityCompat;
-import android.support.v7.app.AppCompatActivity;
 
 import de.pixart.messenger.Config;
 
diff --git a/src/main/java/de/pixart/messenger/ui/MagicCreateActivity.java b/src/main/java/de/pixart/messenger/ui/MagicCreateActivity.java
index fb10a0e08..89da3d3d8 100644
--- a/src/main/java/de/pixart/messenger/ui/MagicCreateActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/MagicCreateActivity.java
@@ -13,7 +13,6 @@ import android.widget.Button;
 import android.widget.EditText;
 import android.widget.Spinner;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import java.security.SecureRandom;
 import java.util.Arrays;
diff --git a/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java b/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java
index a09a285f2..fc5563df0 100644
--- a/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ManageAccountActivity.java
@@ -14,9 +14,7 @@ import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.AdapterView;
 import android.widget.AdapterView.AdapterContextMenuInfo;
-import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
 import android.widget.Toast;
 
diff --git a/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java b/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java
index f3bdbaadb..a51ef21ab 100644
--- a/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/MediaViewerActivity.java
@@ -14,15 +14,9 @@ import android.media.MediaMetadataRetriever;
 import android.net.Uri;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.support.design.widget.FloatingActionButton;
 import android.support.v7.app.ActionBar;
 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 android.util.Log;
-import android.view.Menu;
-import android.view.MenuItem;
 import android.view.View;
 import android.view.WindowManager;
 import android.webkit.MimeTypeMap;
@@ -30,10 +24,6 @@ import android.widget.ImageView;
 import android.widget.Toast;
 
 import com.davemorrissey.labs.subscaleview.ImageSource;
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
-import com.github.rtoshiro.view.video.FullscreenVideoLayout;
-import com.leinardi.android.speeddial.SpeedDialActionItem;
-import com.leinardi.android.speeddial.SpeedDialView;
 
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -47,8 +37,6 @@ import de.pixart.messenger.databinding.ActivityMediaViewerBinding;
 import de.pixart.messenger.persistance.FileBackend;
 import de.pixart.messenger.utils.ExifHelper;
 import de.pixart.messenger.utils.MimeUtils;
-import pl.droidsonroids.gif.GifImageView;
-import rocks.xmpp.addr.Jid;
 
 import static de.pixart.messenger.persistance.FileBackend.close;
 
diff --git a/src/main/java/de/pixart/messenger/ui/SettingsActivity.java b/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
index 37fb8bb6d..ecae24588 100644
--- a/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/SettingsActivity.java
@@ -20,9 +20,6 @@ import android.support.annotation.NonNull;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AlertDialog;
 import android.util.Log;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.widget.EditText;
 import android.widget.Toast;
 
 import java.io.File;
@@ -40,7 +37,6 @@ import de.pixart.messenger.persistance.FileBackend;
 import de.pixart.messenger.services.ExportBackupService;
 import de.pixart.messenger.services.MemorizingTrustManager;
 import de.pixart.messenger.ui.util.StyledAttributes;
-import de.pixart.messenger.utils.Compatibility;
 import de.pixart.messenger.utils.TimeframeUtils;
 import rocks.xmpp.addr.Jid;
 
diff --git a/src/main/java/de/pixart/messenger/ui/ShareViaAccountActivity.java b/src/main/java/de/pixart/messenger/ui/ShareViaAccountActivity.java
index 114532ba1..4f0e81e0d 100644
--- a/src/main/java/de/pixart/messenger/ui/ShareViaAccountActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShareViaAccountActivity.java
@@ -1,7 +1,6 @@
 package de.pixart.messenger.ui;
 
 import android.os.Bundle;
-import android.support.v7.app.ActionBar;
 import android.widget.ListView;
 
 import java.util.ArrayList;
diff --git a/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java b/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java
index 6306a004c..26d8debc5 100644
--- a/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShareWithActivity.java
@@ -18,13 +18,10 @@ import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
 import de.pixart.messenger.entities.Account;
 import de.pixart.messenger.entities.Conversation;
-import de.pixart.messenger.services.EmojiService;
 import de.pixart.messenger.services.XmppConnectionService;
 import de.pixart.messenger.ui.adapter.ConversationAdapter;
 import rocks.xmpp.addr.Jid;
 
-import static de.pixart.messenger.ui.SettingsActivity.USE_BUNDLED_EMOJIS;
-
 public class ShareWithActivity extends XmppActivity implements XmppConnectionService.OnConversationUpdate {
 
     private static final int REQUEST_STORAGE_PERMISSION = 0x733f32;
diff --git a/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java b/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java
index 68ad0cb86..9afb2659f 100644
--- a/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShortcutActivity.java
@@ -5,7 +5,6 @@ import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.v7.app.ActionBar;
-import android.view.View;
 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 3e8d07dd2..26865aed0 100644
--- a/src/main/java/de/pixart/messenger/ui/ShowLocationActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ShowLocationActivity.java
@@ -28,11 +28,8 @@ import java.util.Locale;
 
 import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
-import de.pixart.messenger.services.EmojiService;
 import de.pixart.messenger.utils.MenuDoubleTabUtil;
 
-import static de.pixart.messenger.ui.SettingsActivity.USE_BUNDLED_EMOJIS;
-
 public class ShowLocationActivity extends XmppActivity {
     FloatingActionButton fab;
     private Location location;
diff --git a/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java b/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java
index 035bbf8d4..b87a26b0c 100644
--- a/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/StartConversationActivity.java
@@ -13,16 +13,13 @@ import android.databinding.DataBindingUtil;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.annotation.DrawableRes;
 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.content.ContextCompat;
 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;
@@ -49,8 +46,6 @@ import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import com.leinardi.android.speeddial.SpeedDialView;
-
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
diff --git a/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java b/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java
index 7d56cda8d..4a6dfa234 100644
--- a/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/UriHandlerActivity.java
@@ -7,7 +7,6 @@ import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
-import android.support.v4.app.ActivityCompat;
 import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AppCompatActivity;
 import android.widget.Toast;
@@ -16,7 +15,6 @@ import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
 import de.pixart.messenger.persistance.DatabaseBackend;
 import de.pixart.messenger.utils.SignupUtils;
diff --git a/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java b/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java
index 0ce07dda4..0ea648370 100644
--- a/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/WelcomeActivity.java
@@ -1,46 +1,20 @@
 package de.pixart.messenger.ui;
 
-import android.Manifest;
-import android.app.ProgressDialog;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
-import android.content.pm.PackageManager;
-import android.database.sqlite.SQLiteDatabase;
-import android.database.sqlite.SQLiteException;
-import android.os.Build;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.v7.app.ActionBar;
-import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AppCompatActivity;
-import android.util.Log;
-import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.Button;
-import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.security.InvalidKeyException;
-import java.security.NoSuchAlgorithmException;
 import java.util.List;
 
-import javax.crypto.NoSuchPaddingException;
-
-import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
 import de.pixart.messenger.entities.Account;
-import de.pixart.messenger.persistance.DatabaseBackend;
-import de.pixart.messenger.persistance.FileBackend;
-import de.pixart.messenger.utils.EncryptDecryptFile;
-import de.pixart.messenger.utils.XmppUri;
 
 import static de.pixart.messenger.utils.PermissionUtils.allGranted;
 import static de.pixart.messenger.utils.PermissionUtils.writeGranted;
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 3955ca4cc..e37c0ea16 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/AccountAdapter.java
@@ -1,21 +1,13 @@
 package de.pixart.messenger.ui.adapter;
 
-import android.content.res.Resources;
 import android.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.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
-import android.widget.ImageView;
 
-import java.lang.ref.WeakReference;
 import java.util.List;
-import java.util.concurrent.RejectedExecutionException;
 
 import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
@@ -24,7 +16,6 @@ import de.pixart.messenger.entities.Account;
 import de.pixart.messenger.ui.XmppActivity;
 import de.pixart.messenger.ui.util.AvatarWorkerTask;
 import de.pixart.messenger.ui.util.StyledAttributes;
-import de.pixart.messenger.utils.UIHelper;
 
 public class AccountAdapter extends ArrayAdapter<Account> {
 
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 45fb05c5f..27d623117 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/ConversationAdapter.java
@@ -1,13 +1,8 @@
 package de.pixart.messenger.ui.adapter;
 
 import android.content.SharedPreferences;
-import android.content.res.Resources;
 import android.databinding.DataBindingUtil;
-import android.graphics.Bitmap;
 import android.graphics.Typeface;
-import android.graphics.drawable.BitmapDrawable;
-import android.graphics.drawable.Drawable;
-import android.os.AsyncTask;
 import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.v4.content.ContextCompat;
@@ -16,11 +11,8 @@ import android.util.Pair;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.ImageView;
 
-import java.lang.ref.WeakReference;
 import java.util.List;
-import java.util.concurrent.RejectedExecutionException;
 
 import de.pixart.messenger.R;
 import de.pixart.messenger.databinding.ConversationListRowBinding;
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 a5350ff60..93a822ea3 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/ListItemAdapter.java
@@ -1,12 +1,7 @@
 package de.pixart.messenger.ui.adapter;
 
 import android.content.SharedPreferences;
-import android.content.res.Resources;
 import android.databinding.DataBindingUtil;
-import android.graphics.Bitmap;
-import android.graphics.drawable.BitmapDrawable;
-import android.graphics.drawable.Drawable;
-import android.os.AsyncTask;
 import android.preference.PreferenceManager;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -17,9 +12,7 @@ import android.widget.TextView;
 
 import com.wefika.flowlayout.FlowLayout;
 
-import java.lang.ref.WeakReference;
 import java.util.List;
-import java.util.concurrent.RejectedExecutionException;
 
 import de.pixart.messenger.R;
 import de.pixart.messenger.databinding.ContactBinding;
@@ -30,7 +23,6 @@ import de.pixart.messenger.ui.util.AvatarWorkerTask;
 import de.pixart.messenger.ui.util.StyledAttributes;
 import de.pixart.messenger.utils.EmojiWrapper;
 import de.pixart.messenger.utils.IrregularUnicodeDetector;
-import de.pixart.messenger.utils.UIHelper;
 import rocks.xmpp.addr.Jid;
 
 public class ListItemAdapter extends ArrayAdapter<ListItem> {
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 2c7ce7471..f27158927 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MediaPreviewAdapter.java
@@ -1,6 +1,5 @@
 package de.pixart.messenger.ui.adapter;
 
-import android.app.Activity;
 import android.content.Context;
 import android.content.res.Resources;
 import android.databinding.DataBindingUtil;
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 bdc82d6fa..7e3d26728 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/MessageAdapter.java
@@ -5,16 +5,9 @@ import android.app.Activity;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
-import android.content.res.Resources;
-import android.graphics.Bitmap;
-import android.graphics.Color;
 import android.graphics.Typeface;
-import android.graphics.drawable.BitmapDrawable;
-import android.graphics.drawable.Drawable;
 import android.net.Uri;
-import android.os.AsyncTask;
 import android.preference.PreferenceManager;
-import android.support.annotation.ColorInt;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.content.ContextCompat;
 import android.text.Spannable;
@@ -45,12 +38,9 @@ import android.widget.Toast;
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.load.engine.DiskCacheStrategy;
 
-import java.io.IOException;
 import java.io.UnsupportedEncodingException;
-import java.lang.ref.WeakReference;
 import java.net.URL;
 import java.util.List;
-import java.util.concurrent.RejectedExecutionException;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -87,7 +77,6 @@ import de.pixart.messenger.utils.GeoHelper;
 import de.pixart.messenger.utils.StylingHelper;
 import de.pixart.messenger.utils.UIHelper;
 import de.pixart.messenger.xmpp.mam.MamReference;
-import pl.droidsonroids.gif.GifDrawable;
 import pl.droidsonroids.gif.GifImageView;
 
 import static de.pixart.messenger.ui.SettingsActivity.PLAY_GIF_INSIDE;
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 3ca224a2a..e615f2f42 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/UserAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/UserAdapter.java
@@ -9,15 +9,11 @@ import android.support.v7.util.DiffUtil;
 import android.support.v7.widget.RecyclerView;
 import android.view.ContextMenu;
 import android.view.LayoutInflater;
-import android.view.Menu;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.PopupMenu;
 
 import org.openintents.openpgp.util.OpenPgpUtils;
 
-import java.util.List;
-
 import de.pixart.messenger.R;
 import de.pixart.messenger.crypto.PgpEngine;
 import de.pixart.messenger.databinding.ContactBinding;
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 105503243..0a0e9f587 100644
--- a/src/main/java/de/pixart/messenger/ui/adapter/UserPreviewAdapter.java
+++ b/src/main/java/de/pixart/messenger/ui/adapter/UserPreviewAdapter.java
@@ -6,12 +6,8 @@ import android.support.v7.recyclerview.extensions.ListAdapter;
 import android.support.v7.widget.RecyclerView;
 import android.view.ContextMenu;
 import android.view.LayoutInflater;
-import android.view.Menu;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.PopupMenu;
-
-import java.util.List;
 
 import de.pixart.messenger.R;
 import de.pixart.messenger.databinding.UserPreviewBinding;
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 45a1989e7..07a03fbab 100644
--- a/src/main/java/de/pixart/messenger/ui/util/ConversationMenuConfigurator.java
+++ b/src/main/java/de/pixart/messenger/ui/util/ConversationMenuConfigurator.java
@@ -38,7 +38,6 @@ import android.view.MenuItem;
 import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
 import de.pixart.messenger.crypto.OmemoSetting;
-import de.pixart.messenger.crypto.axolotl.AxolotlService;
 import de.pixart.messenger.entities.Conversation;
 import de.pixart.messenger.entities.Conversational;
 import de.pixart.messenger.entities.Message;
diff --git a/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java b/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
index 8f2aa4e61..4b276e392 100644
--- a/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
+++ b/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
@@ -40,8 +40,6 @@ import de.pixart.messenger.utils.GeoHelper;
 import de.pixart.messenger.utils.Patterns;
 import de.pixart.messenger.utils.XmppUri;
 
-import static java.lang.Character.isAlphabetic;
-
 public class MyLinkify {
 
     private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = (matcher, url) -> {
diff --git a/src/main/java/de/pixart/messenger/ui/util/SendButtonAction.java b/src/main/java/de/pixart/messenger/ui/util/SendButtonAction.java
index c7feb2105..825ca3f17 100644
--- a/src/main/java/de/pixart/messenger/ui/util/SendButtonAction.java
+++ b/src/main/java/de/pixart/messenger/ui/util/SendButtonAction.java
@@ -32,8 +32,8 @@ package de.pixart.messenger.ui.util;
 import static de.pixart.messenger.ui.ConversationFragment.ATTACHMENT_CHOICE;
 import static de.pixart.messenger.ui.ConversationFragment.ATTACHMENT_CHOICE_CHOOSE_IMAGE;
 import static de.pixart.messenger.ui.ConversationFragment.ATTACHMENT_CHOICE_LOCATION;
-import static de.pixart.messenger.ui.ConversationFragment.ATTACHMENT_CHOICE_RECORD_VOICE;
 import static de.pixart.messenger.ui.ConversationFragment.ATTACHMENT_CHOICE_RECORD_VIDEO;
+import static de.pixart.messenger.ui.ConversationFragment.ATTACHMENT_CHOICE_RECORD_VOICE;
 import static de.pixart.messenger.ui.ConversationFragment.ATTACHMENT_CHOICE_TAKE_PHOTO;
 
 public enum SendButtonAction {
diff --git a/src/main/java/de/pixart/messenger/utils/BackupFileHeader.java b/src/main/java/de/pixart/messenger/utils/BackupFileHeader.java
index 204ec45eb..19ad9bff9 100644
--- a/src/main/java/de/pixart/messenger/utils/BackupFileHeader.java
+++ b/src/main/java/de/pixart/messenger/utils/BackupFileHeader.java
@@ -3,7 +3,6 @@ package de.pixart.messenger.utils;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
-import java.util.Arrays;
 
 import rocks.xmpp.addr.Jid;
 
diff --git a/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java b/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java
index 18238ae60..428aa616e 100644
--- a/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/ExceptionHelper.java
@@ -17,7 +17,6 @@ import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.text.SimpleDateFormat;
 import java.util.Date;
-import java.util.List;
 import java.util.Locale;
 
 import de.pixart.messenger.Config;
@@ -27,7 +26,6 @@ import de.pixart.messenger.entities.Conversation;
 import de.pixart.messenger.entities.Message;
 import de.pixart.messenger.services.XmppConnectionService;
 import de.pixart.messenger.ui.XmppActivity;
-import rocks.xmpp.addr.Jid;
 
 public class ExceptionHelper {
     private static final String FILENAME = "stacktrace.txt";
diff --git a/src/main/java/de/pixart/messenger/utils/GeoHelper.java b/src/main/java/de/pixart/messenger/utils/GeoHelper.java
index f6af7c018..d978c89e0 100644
--- a/src/main/java/de/pixart/messenger/utils/GeoHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/GeoHelper.java
@@ -15,7 +15,6 @@ import java.util.regex.Pattern;
 import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
 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.ui.ShowLocationActivity;
diff --git a/src/main/java/de/pixart/messenger/utils/PhoneHelper.java b/src/main/java/de/pixart/messenger/utils/PhoneHelper.java
index 327ae1904..86a9bed1a 100644
--- a/src/main/java/de/pixart/messenger/utils/PhoneHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/PhoneHelper.java
@@ -3,20 +3,13 @@ package de.pixart.messenger.utils;
 import android.Manifest;
 import android.annotation.SuppressLint;
 import android.content.Context;
-import android.content.CursorLoader;
 import android.content.pm.PackageManager;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Build;
-import android.os.Bundle;
-import android.provider.ContactsContract;
 import android.provider.ContactsContract.Profile;
 import android.provider.Settings;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.RejectedExecutionException;
-
 public class PhoneHelper {
 
     @SuppressLint("HardwareIds")
diff --git a/src/main/java/de/pixart/messenger/utils/SerialSingleThreadExecutor.java b/src/main/java/de/pixart/messenger/utils/SerialSingleThreadExecutor.java
index 9846146a8..dc2f2bc09 100644
--- a/src/main/java/de/pixart/messenger/utils/SerialSingleThreadExecutor.java
+++ b/src/main/java/de/pixart/messenger/utils/SerialSingleThreadExecutor.java
@@ -1,6 +1,5 @@
 package de.pixart.messenger.utils;
 
-import android.os.Looper;
 import android.util.Log;
 
 import java.util.ArrayDeque;