Use ActivityTransitionAnim during login/logout.

Author: Sam1301

app/src/main/java/com/zulip/android/activities/LoginActivity.java

@@ -39,6 +39,7 @@
 import com.zulip.android.networking.response.LoginResponse;
 import com.zulip.android.networking.response.ZulipBackendResponse;
 import com.zulip.android.networking.util.DefaultCallback;
+import com.zulip.android.util.ActivityTransitionAnim;
 import com.zulip.android.util.AnimationHelper;
 import com.zulip.android.util.Constants;
 import com.zulip.android.util.CommonProgressDialog;
@@ -432,6 +433,10 @@ public void openHome() {
         commonProgressDialog.dismiss();
         Intent i = new Intent(this, ZulipActivity.class);
         startActivity(i);
+
+        // activity transition animation
+        ActivityTransitionAnim.transition(this);
+
         finish();
     }
 

app/src/main/java/com/zulip/android/activities/RecyclerMessageAdapter.java

@@ -1,6 +1,5 @@
 package com.zulip.android.activities;
 
-import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.ColorStateList;
@@ -34,6 +33,7 @@
 import com.zulip.android.models.Person;
 import com.zulip.android.models.Stream;
 import com.zulip.android.util.ConvertDpPx;
+import com.zulip.android.util.ActivityTransitionAnim;
 import com.zulip.android.util.MutedTopics;
 import com.zulip.android.util.OnItemClickListener;
 import com.zulip.android.util.UrlHelper;
@@ -397,7 +397,9 @@ public void onClick(View view) {
                                     i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                                     i.putExtra(Intent.EXTRA_TEXT , url);
                                     zulipApp.startActivity(i);
-                                    ((Activity) context).overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
+
+                                    // activity transition animation
+                                    ActivityTransitionAnim.transition(context);
                                 }
                             });
                 } else {

app/src/main/java/com/zulip/android/activities/ZulipActivity.java

@@ -2150,6 +2150,10 @@ private void openLogin(String serverUrl) {
         Intent i = new Intent(this, LoginActivity.class);
         i.putExtra(Constants.SERVER_URL, serverUrl);
         startActivity(i);
+
+        // activity transition animation
+        ActivityTransitionAnim.transition(this);
+
         finish();
     }