Add transition animation when changing servers

app/src/main/java/chat/rocket/android/activity/AbstractAuthedActivity.java

@@ -9,6 +9,7 @@ import com.hadisatrio.optional.Optional;
 import java.util.List;
 
 import chat.rocket.android.LaunchUtil;
+import chat.rocket.android.R;
 import chat.rocket.android.RocketChatCache;
 import chat.rocket.android.helper.Logger;
 import chat.rocket.android.push.PushManager;
@@ -104,7 +105,10 @@ abstract class AbstractAuthedActivity extends AbstractFragmentActivity {
       }
 
       if (assertServerRealmStoreExists(newHostname)) {
-        recreate();
+        Intent intent = new Intent(this, MainActivity.class);
+        startActivity(intent);
+        finish();
+        overridePendingTransition(R.anim.slide_in, R.anim.slide_out);
       } else {
         recoverFromHostnameError();
       }

app/src/main/res/anim/slide_in.xml

+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shareInterpolator="true"
+    android:interpolator="@android:anim/decelerate_interpolator">
+    <translate
+        android:duration="@android:integer/config_mediumAnimTime"
+        android:fromYDelta="100%p"
+        android:toYDelta="0">
+    </translate>
+</set>
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app/src/main/res/anim/slide_out.xml

+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <translate
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:duration="@android:integer/config_mediumAnimTime"
+        android:fromYDelta="0%p"
+        android:toYDelta="0">
+    </translate>
+</set>
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