Format contact names in MUC properly

src/main/java/eu/siacs/conversations/ui/ConversationActivity.java

@@ -69,7 +69,7 @@ public class ConversationActivity extends XmppActivity implements
 
 	private View mContentView;
 
-	private List<Conversation> conversationList = new ArrayList<Conversation>();
+	private List<Conversation> conversationList = new ArrayList<>();
 	private Conversation selectedConversation = null;
 	private ListView listView;
 	private ConversationFragment mConversationFragment;
@@ -160,8 +160,10 @@ public class ConversationActivity extends XmppActivity implements
 		this.listAdapter = new ConversationAdapter(this, conversationList);
 		listView.setAdapter(this.listAdapter);
 
+		if (getActionBar() != null) {
 			getActionBar().setDisplayHomeAsUpEnabled(false);
 			getActionBar().setHomeButtonEnabled(false);
+		}
 
 		listView.setOnItemClickListener(new OnItemClickListener() {
 
@@ -599,7 +601,7 @@ public class ConversationActivity extends XmppActivity implements
 	}
 
 	@Override
-	public boolean onKeyDown(int keyCode, KeyEvent event) {
+	public boolean onKeyDown(final int keyCode, final KeyEvent event) {
 		if (keyCode == KeyEvent.KEYCODE_BACK) {
 			if (!isConversationsOverviewVisable()) {
 				showConversationsOverview();
@@ -610,7 +612,7 @@ public class ConversationActivity extends XmppActivity implements
 	}
 
 	@Override
-	protected void onNewIntent(Intent intent) {
+	protected void onNewIntent(final Intent intent) {
 		if (xmppConnectionServiceBound) {
 			if (intent != null && VIEW_CONVERSATION.equals(intent.getType())) {
 				handleViewConversationIntent(intent);
@@ -644,7 +646,7 @@ public class ConversationActivity extends XmppActivity implements
 	}
 
 	@Override
-	public void onSaveInstanceState(Bundle savedInstanceState) {
+	public void onSaveInstanceState(final Bundle savedInstanceState) {
 		Conversation conversation = getSelectedConversation();
 		if (conversation != null) {
 			savedInstanceState.putString(STATE_OPEN_CONVERSATION,
@@ -713,9 +715,9 @@ public class ConversationActivity extends XmppActivity implements
 	}
 
 	private void selectConversationByUuid(String uuid) {
-		for (int i = 0; i < conversationList.size(); ++i) {
-			if (conversationList.get(i).getUuid().equals(uuid)) {
-				setSelectedConversation(conversationList.get(i));
+        for (Conversation aConversationList : conversationList) {
+            if (aConversationList.getUuid().equals(uuid)) {
+                setSelectedConversation(aConversationList);
             }
         }
 	}
@@ -831,7 +833,7 @@ public class ConversationActivity extends XmppActivity implements
 		try {
 			this.startIntentSenderForResult(pi.getIntentSender(), requestCode,
 					null, 0, 0, 0);
-		} catch (SendIntentException e1) {
+		} catch (final SendIntentException ignored) {
 		}
 	}
 

src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java

@@ -149,7 +149,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 					info = contact.getDisplayName();
 				} else {
 					if (message.getPresence() != null) {
-						info = message.getPresence().toString();
+						info = message.getPresence().getResourcepart();
 					} else {
 						info = message.getCounterpart().toString();
 					}
@@ -246,8 +246,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 					} else {
 						to = message.getCounterpart();
 					}
-					privateMarker = activity.getString(
-							R.string.private_message_to, to);
+					privateMarker = activity.getString(R.string.private_message_to, to);
 				}
 				SpannableString span = new SpannableString(privateMarker + " "
 						+ message.getBody());
@@ -436,7 +435,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 			viewHolder.contact_picture.setImageBitmap(activity.avatarService().get(item.getConversation().getAccount(), activity.getPixel(48)));
 		}
 
-		if (viewHolder.contact_picture != null) {
+		if (viewHolder != null && viewHolder.contact_picture != null) {
 			viewHolder.contact_picture
 					.setOnClickListener(new OnClickListener() {
 
@@ -501,6 +500,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
 				} else {
 					displayInfoMessage(viewHolder,
 							R.string.install_openkeychain);
+                    if (viewHolder != null) {
                         viewHolder.message_box
                                 .setOnClickListener(new OnClickListener() {
 
@@ -509,6 +509,7 @@ public class MessageAdapter extends ArrayAdapter<Message> {
                                         activity.showInstallPgpDialog();
                                     }
                                 });
+                    }
 				}
 			} else if (item.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 				displayDecryptionFailed(viewHolder);