package de.pixart.messenger.ui; import android.app.ActionBar; import android.app.AlertDialog; import android.app.PendingIntent; import android.content.Context; import android.content.DialogInterface; import android.content.IntentSender.SendIntentException; import android.os.Bundle; import android.view.ContextMenu; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.Toast; import org.openintents.openpgp.util.OpenPgpUtils; import java.util.ArrayList; import java.util.Collections; import java.util.concurrent.atomic.AtomicInteger; import de.pixart.messenger.Config; import de.pixart.messenger.R; import de.pixart.messenger.crypto.PgpEngine; import de.pixart.messenger.entities.Account; import de.pixart.messenger.entities.Bookmark; import de.pixart.messenger.entities.Contact; import de.pixart.messenger.entities.Conversation; import de.pixart.messenger.entities.MucOptions; import de.pixart.messenger.entities.MucOptions.User; import de.pixart.messenger.services.XmppConnectionService; import de.pixart.messenger.services.XmppConnectionService.OnConversationUpdate; import de.pixart.messenger.services.XmppConnectionService.OnMucRosterUpdate; import de.pixart.messenger.xmpp.jid.Jid; public class ConferenceDetailsActivity extends XmppActivity implements OnConversationUpdate, OnMucRosterUpdate, XmppConnectionService.OnAffiliationChanged, XmppConnectionService.OnRoleChanged, XmppConnectionService.OnConfigurationPushed { public static final String ACTION_VIEW_MUC = "view_muc"; private static final float INACTIVE_ALPHA = 0.4684f; //compromise between dark and light theme private Conversation mConversation; private OnClickListener inviteListener = new OnClickListener() { @Override public void onClick(View v) { inviteToConversation(mConversation); } }; private TextView ConferenceName; private TextView mYourNick; private ImageView mYourPhoto; private TextView mRoleAffiliaton; private TextView mFullJid; private TextView mAccountJid; private LinearLayout membersView; private LinearLayout mMoreDetails; private RelativeLayout mMucSettings; private TextView mConferenceType; private LinearLayout mConferenceInfoTable; private TextView mConferenceInfoMam; private TextView mNotifyStatusText; private ImageButton mChangeConferenceSettingsButton; private ImageButton mNotifyStatusButton; private Button mInviteButton; private String uuid = null; private User mSelectedUser = null; private boolean mAdvancedMode = false; private UiCallback renameCallback = new UiCallback() { @Override public void success(Conversation object) { runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(ConferenceDetailsActivity.this, getString(R.string.your_nick_has_been_changed), Toast.LENGTH_SHORT).show(); updateView(); } }); } @Override public void error(final int errorCode, Conversation object) { runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(ConferenceDetailsActivity.this, getString(errorCode), Toast.LENGTH_SHORT).show(); } }); } @Override public void userInputRequried(PendingIntent pi, Conversation object) { } }; private OnClickListener mNotifyStatusClickListener = new OnClickListener() { @Override public void onClick(View v) { AlertDialog.Builder builder = new AlertDialog.Builder(ConferenceDetailsActivity.this); builder.setTitle(R.string.pref_notification_settings); String[] choices = { getString(R.string.notify_on_all_messages), getString(R.string.notify_only_when_highlighted), getString(R.string.notify_never) }; final AtomicInteger choice; if (mConversation.getLongAttribute(Conversation.ATTRIBUTE_MUTED_TILL, 0) == Long.MAX_VALUE) { choice = new AtomicInteger(2); } else { choice = new AtomicInteger(mConversation.alwaysNotify() ? 0 : 1); } builder.setSingleChoiceItems(choices, choice.get(), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { choice.set(which); } }); builder.setNegativeButton(R.string.cancel, null); builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (choice.get() == 2) { AlertDialog.Builder builder = new AlertDialog.Builder(ConferenceDetailsActivity.this); builder.setTitle(R.string.disable_notifications); final int[] durations = getResources().getIntArray(R.array.mute_options_durations); builder.setItems(R.array.mute_options_descriptions, new DialogInterface.OnClickListener() { @Override public void onClick(final DialogInterface dialog, final int which) { final long till; if (durations[which] == -1) { till = Long.MAX_VALUE; } else { till = System.currentTimeMillis() + (durations[which] * 1000); } mConversation.setMutedTill(till); xmppConnectionService.updateConversation(mConversation); updateView(); } }); builder.create().show(); } else { mConversation.setMutedTill(0); mConversation.setAttribute(Conversation.ATTRIBUTE_ALWAYS_NOTIFY, String.valueOf(choice.get() == 0)); } xmppConnectionService.updateConversation(mConversation); updateView(); } }); builder.create().show(); } }; private OnClickListener mChangeConferenceSettings = new OnClickListener() { @Override public void onClick(View v) { final MucOptions mucOptions = mConversation.getMucOptions(); AlertDialog.Builder builder = new AlertDialog.Builder(ConferenceDetailsActivity.this); builder.setTitle(R.string.conference_options); final String[] options; final boolean[] values; if (mAdvancedMode) { options = new String[]{ getString(R.string.members_only), getString(R.string.moderated), getString(R.string.non_anonymous) }; values = new boolean[]{ mucOptions.membersOnly(), mucOptions.moderated(), mucOptions.nonanonymous() }; } else { options = new String[]{ getString(R.string.members_only), getString(R.string.non_anonymous) }; values = new boolean[]{ mucOptions.membersOnly(), mucOptions.nonanonymous() }; } builder.setMultiChoiceItems(options, values, new DialogInterface.OnMultiChoiceClickListener() { @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) { values[which] = isChecked; } }); builder.setNegativeButton(R.string.cancel, null); builder.setPositiveButton(R.string.confirm, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (!mucOptions.membersOnly() && values[0]) { xmppConnectionService.changeAffiliationsInConference(mConversation, MucOptions.Affiliation.NONE, MucOptions.Affiliation.MEMBER); } Bundle options = new Bundle(); options.putString("muc#roomconfig_membersonly", values[0] ? "1" : "0"); if (values.length == 2) { options.putString("muc#roomconfig_whois", values[1] ? "anyone" : "moderators"); } else if (values.length == 3) { options.putString("muc#roomconfig_moderatedroom", values[1] ? "1" : "0"); options.putString("muc#roomconfig_whois", values[2] ? "anyone" : "moderators"); } options.putString("muc#roomconfig_persistentroom", "1"); xmppConnectionService.pushConferenceConfiguration(mConversation, options, ConferenceDetailsActivity.this); } }); builder.create().show(); } }; private OnValueEdited onSubjectEdited = new OnValueEdited() { @Override public String onValueEdited(String value) { xmppConnectionService.pushSubjectToConference(mConversation, value); return null; } }; @Override public void onConversationUpdate() { refreshUi(); } @Override public void onMucRosterUpdate() { refreshUi(); } @Override protected void refreshUiReal() { updateView(); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_muc_details); ConferenceName = findViewById(R.id.conference_name); mYourNick = findViewById(R.id.muc_your_nick); mYourPhoto = findViewById(R.id.your_photo); ImageButton mEditNickButton = findViewById(R.id.edit_nick_button); mFullJid = findViewById(R.id.muc_jabberid); membersView = findViewById(R.id.muc_members); mAccountJid = findViewById(R.id.details_account); mMucSettings = findViewById(R.id.muc_settings); mMoreDetails = findViewById(R.id.muc_more_details); mChangeConferenceSettingsButton = findViewById(R.id.change_conference_button); mChangeConferenceSettingsButton.setOnClickListener(this.mChangeConferenceSettings); mInviteButton = findViewById(R.id.invite); mInviteButton.setVisibility(View.GONE); mInviteButton.setOnClickListener(inviteListener); mConferenceType = findViewById(R.id.muc_conference_type); if (getActionBar() != null) { getActionBar().setHomeButtonEnabled(true); getActionBar().setDisplayHomeAsUpEnabled(true); } mEditNickButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { quickEdit(mConversation.getMucOptions().getActualNick(), 0, new OnValueEdited() { @Override public String onValueEdited(String value) { if (xmppConnectionService.renameInMuc(mConversation, value, renameCallback)) { return null; } else { return getString(R.string.invalid_username); } } }); } }); this.mAdvancedMode = getPreferences().getBoolean("advanced_muc_mode", false); this.mConferenceInfoTable = findViewById(R.id.muc_info_more); this.mConferenceInfoTable.setVisibility(this.mAdvancedMode ? View.VISIBLE : View.GONE); this.mConferenceInfoMam = findViewById(R.id.muc_info_mam); this.mNotifyStatusButton = findViewById(R.id.notification_status_button); this.mNotifyStatusButton.setOnClickListener(this.mNotifyStatusClickListener); this.mNotifyStatusText = findViewById(R.id.notification_status_text); } @Override protected void onStart() { super.onStart(); final int theme = findTheme(); if (this.mTheme != theme) { recreate(); } } @Override public boolean onOptionsItemSelected(MenuItem menuItem) { switch (menuItem.getItemId()) { case android.R.id.home: finish(); break; case R.id.action_edit_subject: if (mConversation != null) { quickEdit(mConversation.getMucOptions().getSubject(), R.string.edit_subject_hint, this.onSubjectEdited); } break; case R.id.action_share_http: shareLink(true); break; case R.id.action_share_uri: shareLink(false); break; case R.id.action_save_as_bookmark: saveAsBookmark(); break; case R.id.action_delete_bookmark: deleteBookmark(); break; case R.id.action_advanced_mode: this.mAdvancedMode = !menuItem.isChecked(); menuItem.setChecked(this.mAdvancedMode); getPreferences().edit().putBoolean("advanced_muc_mode", mAdvancedMode).apply(); final boolean online = mConversation != null && mConversation.getMucOptions().online(); mConferenceInfoTable.setVisibility(this.mAdvancedMode && online ? View.VISIBLE : View.GONE); invalidateOptionsMenu(); updateView(); break; } return super.onOptionsItemSelected(menuItem); } @Override protected String getShareableUri(boolean http) { if (mConversation != null) { if (http) { return Config.inviteMUCURL + mConversation.getJid().toBareJid(); } else { return "xmpp:" + mConversation.getJid().toBareJid() + "?join"; } } else { return null; } } @Override public boolean onPrepareOptionsMenu(Menu menu) { MenuItem menuItemSaveBookmark = menu.findItem(R.id.action_save_as_bookmark); MenuItem menuItemDeleteBookmark = menu.findItem(R.id.action_delete_bookmark); MenuItem menuItemAdvancedMode = menu.findItem(R.id.action_advanced_mode); MenuItem menuItemChangeSubject = menu.findItem(R.id.action_edit_subject); menuItemAdvancedMode.setChecked(mAdvancedMode); if (mConversation == null) { return true; } Account account = mConversation.getAccount(); if (account.hasBookmarkFor(mConversation.getJid().toBareJid())) { menuItemSaveBookmark.setVisible(false); menuItemDeleteBookmark.setVisible(true); } else { menuItemDeleteBookmark.setVisible(false); menuItemSaveBookmark.setVisible(true); } menuItemChangeSubject.setVisible(mConversation.getMucOptions().canChangeSubject()); return true; } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.muc_details, menu); return super.onCreateOptionsMenu(menu); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) { Object tag = v.getTag(); if (tag instanceof User) { getMenuInflater().inflate(R.menu.muc_details_context, menu); final User user = (User) tag; final User self = mConversation.getMucOptions().getSelf(); this.mSelectedUser = user; String name; final Contact contact = user.getContact(); if (contact != null && contact.showInRoster()) { name = contact.getDisplayName(); } else if (user.getRealJid() != null){ name = user.getRealJid().toBareJid().toString(); } else { name = user.getName(); } menu.setHeaderTitle(name); if (user.getRealJid() != null) { MenuItem highlightInMuc = menu.findItem(R.id.highlight_in_muc); MenuItem startConversation = menu.findItem(R.id.start_conversation); MenuItem giveMembership = menu.findItem(R.id.give_membership); MenuItem removeMembership = menu.findItem(R.id.remove_membership); MenuItem giveAdminPrivileges = menu.findItem(R.id.give_admin_privileges); MenuItem removeAdminPrivileges = menu.findItem(R.id.remove_admin_privileges); MenuItem removeFromRoom = menu.findItem(R.id.remove_from_room); MenuItem banFromConference = menu.findItem(R.id.ban_from_conference); MenuItem invite = menu.findItem(R.id.invite); highlightInMuc.setVisible(true); startConversation.setVisible(true); if (user.getRole() == MucOptions.Role.NONE) { invite.setVisible(true); } if (self.getAffiliation().ranks(MucOptions.Affiliation.ADMIN) && self.getAffiliation().outranks(user.getAffiliation())) { if (mAdvancedMode) { if (user.getAffiliation() == MucOptions.Affiliation.NONE) { giveMembership.setVisible(true); } else { removeMembership.setVisible(true); } banFromConference.setVisible(true); } else { removeFromRoom.setVisible(true); } if (user.getAffiliation() != MucOptions.Affiliation.ADMIN) { giveAdminPrivileges.setVisible(true); } else { removeAdminPrivileges.setVisible(true); } } } else { MenuItem sendPrivateMessage = menu.findItem(R.id.send_private_message); sendPrivateMessage.setVisible(user.getRole().ranks(MucOptions.Role.PARTICIPANT)); } } super.onCreateContextMenu(menu, v, menuInfo); } @Override public boolean onContextItemSelected(MenuItem item) { Jid jid = mSelectedUser.getRealJid(); switch (item.getItemId()) { case R.id.highlight_in_muc: highlightInMuc(mConversation, mSelectedUser.getName()); return true; case R.id.start_conversation: startConversation(mSelectedUser); return true; case R.id.give_admin_privileges: xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.ADMIN, this); return true; case R.id.give_membership: xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.MEMBER, this); return true; case R.id.remove_membership: xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.NONE, this); return true; case R.id.remove_admin_privileges: xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.MEMBER, this); return true; case R.id.remove_from_room: removeFromRoom(mSelectedUser); return true; case R.id.ban_from_conference: xmppConnectionService.changeAffiliationInConference(mConversation, jid, MucOptions.Affiliation.OUTCAST, this); if (mSelectedUser.getRole() != MucOptions.Role.NONE) { xmppConnectionService.changeRoleInConference(mConversation, mSelectedUser.getName(), MucOptions.Role.NONE, this); } return true; case R.id.send_private_message: if (mConversation.getMucOptions().allowPm()) { privateMsgInMuc(mConversation, mSelectedUser.getName()); } else { Toast.makeText(this, R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show(); } return true; case R.id.invite: xmppConnectionService.directInvite(mConversation, jid); return true; default: return super.onContextItemSelected(item); } } private void removeFromRoom(final User user) { if (mConversation.getMucOptions().membersOnly()) { xmppConnectionService.changeAffiliationInConference(mConversation, user.getRealJid(), MucOptions.Affiliation.NONE, this); if (user.getRole() != MucOptions.Role.NONE) { xmppConnectionService.changeRoleInConference(mConversation, mSelectedUser.getName(), MucOptions.Role.NONE, ConferenceDetailsActivity.this); } } else { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle(R.string.ban_from_conference); builder.setMessage(getString(R.string.removing_from_public_conference, user.getName())); builder.setNegativeButton(R.string.cancel, null); builder.setPositiveButton(R.string.ban_now, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { xmppConnectionService.changeAffiliationInConference(mConversation, user.getRealJid(), MucOptions.Affiliation.OUTCAST, ConferenceDetailsActivity.this); if (user.getRole() != MucOptions.Role.NONE) { xmppConnectionService.changeRoleInConference(mConversation, mSelectedUser.getName(), MucOptions.Role.NONE, ConferenceDetailsActivity.this); } } }); builder.create().show(); } } protected void startConversation(User user) { if (user.getRealJid() != null) { Conversation conversation = xmppConnectionService.findOrCreateConversation(this.mConversation.getAccount(), user.getRealJid().toBareJid(), false, true); switchToConversation(conversation); } } protected void saveAsBookmark() { xmppConnectionService.saveConversationAsBookmark(mConversation, mConversation.getMucOptions().getSubject()); } protected void deleteBookmark() { Account account = mConversation.getAccount(); Bookmark bookmark = mConversation.getBookmark(); mConversation.deregisterWithBookmark(); account.getBookmarks().remove(bookmark); xmppConnectionService.pushBookmarks(account); updateView(); } @Override void onBackendConnected() { if (mPendingConferenceInvite != null) { mPendingConferenceInvite.execute(this); mPendingConferenceInvite = null; } if (getIntent().getAction().equals(ACTION_VIEW_MUC)) { this.uuid = getIntent().getExtras().getString("uuid"); } if (uuid != null) { this.mConversation = xmppConnectionService.findConversationByUuid(uuid); if (this.mConversation != null) { updateView(); } } } private void updateView() { invalidateOptionsMenu(); final MucOptions mucOptions = mConversation.getMucOptions(); final User self = mucOptions.getSelf(); String account; if (Config.DOMAIN_LOCK != null) { account = mConversation.getAccount().getJid().getLocalpart(); } else { account = mConversation.getAccount().getJid().toBareJid().toString(); } if (getActionBar() != null) { final ActionBar ab = getActionBar(); ab.setCustomView(R.layout.ab_title); ab.setDisplayShowCustomEnabled(true); TextView abtitle = findViewById(android.R.id.text1); TextView absubtitle = findViewById(android.R.id.text2); abtitle.setText(mConversation.getName()); abtitle.setSelected(true); abtitle.setClickable(false); absubtitle.setVisibility(View.GONE); absubtitle.setClickable(false); } ConferenceName.setText(mConversation.getName()); mAccountJid.setText(getString(R.string.using_account, account)); mYourPhoto.setImageBitmap(avatarService().get(mConversation.getAccount(), getPixel(48))); setTitle(mConversation.getName()); mFullJid.setText(mConversation.getJid().toBareJid().toString()); mYourNick.setText(mucOptions.getActualNick()); TextView mRoleAffiliaton = findViewById(R.id.muc_role); if (mucOptions.online()) { mMoreDetails.setVisibility(View.VISIBLE); mMucSettings.setVisibility(View.VISIBLE); mConferenceInfoTable.setVisibility(this.mAdvancedMode ? View.VISIBLE : View.GONE); final String status = getStatus(self); if (status != null) { mRoleAffiliaton.setVisibility(View.VISIBLE); mRoleAffiliaton.setText(status); } else { mRoleAffiliaton.setVisibility(View.GONE); } if (mucOptions.membersOnly()) { mConferenceType.setText(R.string.private_conference); } else { mConferenceType.setText(R.string.public_conference); } if (mucOptions.mamSupport()) { mConferenceInfoMam.setText(R.string.server_info_available); } else { mConferenceInfoMam.setText(R.string.server_info_unavailable); } if (self.getAffiliation().ranks(MucOptions.Affiliation.OWNER)) { mChangeConferenceSettingsButton.setVisibility(View.VISIBLE); } else { mChangeConferenceSettingsButton.setVisibility(View.GONE); } } else { mMoreDetails.setVisibility(View.GONE); mMucSettings.setVisibility(View.GONE); mConferenceInfoTable.setVisibility(View.GONE); } long mutedTill = mConversation.getLongAttribute(Conversation.ATTRIBUTE_MUTED_TILL, 0); if (mutedTill == Long.MAX_VALUE) { mNotifyStatusText.setText(R.string.notify_never); mNotifyStatusButton.setImageResource(R.drawable.ic_notifications_off_grey600_24dp); } else if (System.currentTimeMillis() < mutedTill) { mNotifyStatusText.setText(R.string.notify_paused); mNotifyStatusButton.setImageResource(R.drawable.ic_notifications_paused_grey600_24dp); } else if (mConversation.alwaysNotify()) { mNotifyStatusButton.setImageResource(R.drawable.ic_notifications_grey600_24dp); mNotifyStatusText.setText(R.string.notify_on_all_messages); } else { mNotifyStatusButton.setImageResource(R.drawable.ic_notifications_none_grey600_24dp); mNotifyStatusText.setText(R.string.notify_only_when_highlighted); } LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); membersView.removeAllViews(); final ArrayList users = mucOptions.getUsers(); Collections.sort(users); for (final User user : users) { final Contact contact = user.getContact(); View view = inflater.inflate(R.layout.contact, membersView, false); this.setListItemBackgroundOnView(view); if (contact != null && contact.showInRoster()) { view.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { switchToContactDetails(contact); } }); } registerForContextMenu(view); view.setTag(user); TextView tvDisplayName = view.findViewById(R.id.contact_display_name); TextView tvKey = view.findViewById(R.id.key); TextView tvStatus = view.findViewById(R.id.contact_jid); if (mAdvancedMode && user.getPgpKeyId() != 0) { tvKey.setVisibility(View.VISIBLE); tvKey.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { viewPgpKey(user); } }); tvKey.setText(OpenPgpUtils.convertKeyIdToHex(user.getPgpKeyId())); } String name = user.getName(); if (contact != null) { tvDisplayName.setText(contact.getDisplayName()); tvStatus.setText((name != null ? name + " \u2022 " : "") + getStatus(user)); } else { tvDisplayName.setText(name == null ? "" : name); tvStatus.setText(getStatus(user)); } ImageView iv = view.findViewById(R.id.contact_photo); iv.setImageBitmap(avatarService().get(user, getPixel(48), false)); if (user.getRole() == MucOptions.Role.NONE) { tvDisplayName.setAlpha(INACTIVE_ALPHA); tvKey.setAlpha(INACTIVE_ALPHA); tvStatus.setAlpha(INACTIVE_ALPHA); iv.setAlpha(INACTIVE_ALPHA); } membersView.addView(view); if (mConversation.getMucOptions().canInvite()) { mInviteButton.setVisibility(View.VISIBLE); } else { mInviteButton.setVisibility(View.GONE); } } } private String getStatus(User user) { if (mAdvancedMode) { return getString(user.getAffiliation().getResId()) + " (" + getString(user.getRole().getResId()) + ')'; } else { return getString(user.getAffiliation().getResId()); } } private void viewPgpKey(User user) { PgpEngine pgp = xmppConnectionService.getPgpEngine(); if (pgp != null) { PendingIntent intent = pgp.getIntentForKey(user.getPgpKeyId()); if (intent != null) { try { startIntentSenderForResult(intent.getIntentSender(), 0, null, 0, 0, 0); } catch (SendIntentException ignored) { } } } } @Override public void onAffiliationChangedSuccessful(Jid jid) { refreshUi(); } @Override public void onAffiliationChangeFailed(Jid jid, int resId) { displayToast(getString(resId, jid.toBareJid().toString())); } @Override public void onRoleChangedSuccessful(String nick) { } @Override public void onRoleChangeFailed(String nick, int resId) { displayToast(getString(resId, nick)); } @Override public void onPushSucceeded() { displayToast(getString(R.string.modified_conference_options)); } @Override public void onPushFailed() { displayToast(getString(R.string.could_not_modify_conference_options)); } private void displayToast(final String msg) { runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(ConferenceDetailsActivity.this, msg, Toast.LENGTH_SHORT).show(); } }); } }