Fixed list/item animation

app/src/main/java/eu/faircode/email/ActivityView.java

@@ -44,6 +44,7 @@ import android.os.ParcelFileDescriptor;
 import android.preference.PreferenceManager;
 import android.provider.ContactsContract;
 import android.text.TextUtils;
+import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
@@ -1095,9 +1096,14 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
             args.putBoolean("pane", true);
         }
 
+        TypedValue enter = new TypedValue();
+        TypedValue exit = new TypedValue();
+        getTheme().resolveAttribute(android.R.attr.activityOpenEnterAnimation, enter, false);
+        getTheme().resolveAttribute(android.R.attr.activityOpenExitAnimation, exit, false);
+
         FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
         fragmentTransaction.setCustomAnimations(
-                android.R.anim.fade_in, android.R.anim.fade_in,
+                enter.resourceId, exit.resourceId,
                 android.R.anim.fade_out, android.R.anim.fade_out);
         fragmentTransaction.replace(pane, fragment).addToBackStack("thread");
         fragmentTransaction.commit();