code cleanup, null check not necessary when using instance of

1 files changed, 10 insertions, 9 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java b/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
index 932ab452b..787942b8d 100644
--- a/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ConversationsActivity.java
@@ -280,7 +280,8 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
             return;
         }
         final Fragment fragment = getFragmentManager().findFragmentById(R.id.main_fragment);
-        if (fragment != null && fragment instanceof ConversationsOverviewFragment) {
+        if (fragment instanceof ConversationsOverviewFragment) {
+
             if (ExceptionHelper.checkForCrash(this)) {
                 return;
             }
@@ -335,14 +336,14 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
 
     private void notifyFragmentOfBackendConnected(@IdRes int id) {
         final Fragment fragment = getFragmentManager().findFragmentById(id);
-        if (fragment != null && fragment instanceof OnBackendConnected) {
+        if (fragment instanceof OnBackendConnected) {
             ((OnBackendConnected) fragment).onBackendConnected();
         }
     }
 
     private void refreshFragment(@IdRes int id) {
         final Fragment fragment = getFragmentManager().findFragmentById(id);
-        if (fragment != null && fragment instanceof XmppFragment) {
+        if (fragment instanceof XmppFragment) {
             ((XmppFragment) fragment).refresh();
         }
     }
@@ -530,7 +531,7 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
         if (conversationFragment == null) {
             mainNeedsRefresh = false;
             Fragment mainFragment = getFragmentManager().findFragmentById(R.id.main_fragment);
-            if (mainFragment != null && mainFragment instanceof ConversationFragment) {
+            if (mainFragment instanceof ConversationFragment) {
                 conversationFragment = (ConversationFragment) mainFragment;
             } else {
                 conversationFragment = new ConversationFragment();
@@ -686,7 +687,7 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
                     return;
                 }
             } else {
-                if (secondaryFragment != null && secondaryFragment instanceof ConversationFragment) {
+                if (secondaryFragment instanceof ConversationFragment) {
                     Log.d(Config.LOGTAG, "lost secondary fragment. moving...");
                     transaction.remove(secondaryFragment);
                     transaction.commit();
@@ -712,7 +713,7 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
         final ActionBar actionBar = getSupportActionBar();
         if (actionBar != null) {
             Fragment mainFragment = getFragmentManager().findFragmentById(R.id.main_fragment);
-            if (mainFragment != null && mainFragment instanceof ConversationFragment) {
+            if (mainFragment instanceof ConversationFragment) {
                 final Conversation conversation = ((ConversationFragment) mainFragment).getConversation();
                 if (conversation != null) {
                     actionBar.setDisplayHomeAsUpEnabled(true);
@@ -895,7 +896,7 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
             return;
         }
         Fragment mainFragment = getFragmentManager().findFragmentById(R.id.main_fragment);
-        if (mainFragment != null && mainFragment instanceof ConversationFragment) {
+        if (mainFragment instanceof ConversationFragment) {
             try {
                 getFragmentManager().popBackStack();
             } catch (IllegalStateException e) {
@@ -905,7 +906,7 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
             return;
         }
         Fragment secondaryFragment = getFragmentManager().findFragmentById(R.id.secondary_fragment);
-        if (secondaryFragment != null && secondaryFragment instanceof ConversationFragment) {
+        if (secondaryFragment instanceof ConversationFragment) {
             if (((ConversationFragment) secondaryFragment).getConversation() == conversation) {
                 Conversation suggestion = ConversationsOverviewFragment.getSuggestion(this, conversation);
                 if (suggestion != null) {
@@ -918,7 +919,7 @@ public class ConversationsActivity extends XmppActivity implements OnConversatio
     @Override
     public void onConversationsListItemUpdated() {
         Fragment fragment = getFragmentManager().findFragmentById(R.id.main_fragment);
-        if (fragment != null && fragment instanceof ConversationsOverviewFragment) {
+        if (fragment instanceof ConversationsOverviewFragment) {
             ((ConversationsOverviewFragment) fragment).refresh();
         }
     }