Activity transition animations like the Vine Android application. - See more at: http://blog.quent.in/index.php/2013/06/activity-transition-animations-like-the-vine-android-application/

activity_close_scale.xml

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">

    <scale android:fromXScale="100%p"
          android:toXScale="80%p"
          android:fromYScale="100%p"
          android:toYScale="80%p"
          android:pivotX="50%p"
          android:pivotY="50%p"
          android:duration="@android:integer/config_mediumAnimTime" />

    <alpha android:fromAlpha="1"
          android:toAlpha="0.5"
          android:duration="@android:integer/config_mediumAnimTime"/>

</set>

activity_close_translate.xml

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate android:fromXDelta="0%"
               android:toXDelta="100%"
               android:duration="@android:integer/config_mediumAnimTime" />

</set>

activity_open_scale.xml

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">

    <scale android:fromXScale="80%p"
          android:toXScale="100%p"
          android:fromYScale="80%p"
          android:toYScale="100%p"
          android:pivotX="50%p"
          android:pivotY="50%p"
          android:duration="@android:integer/config_mediumAnimTime" />

    <alpha android:fromAlpha="0.5"
          android:toAlpha="1.0"
          android:duration="@android:integer/config_mediumAnimTime"/>

</set>

activity_open_translate.xml

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate android:fromXDelta="100%"
               android:toXDelta="0%"
               android:duration="@android:integer/config_mediumAnimTime" />

</set>

AnimatedActivity.java

public class AnimatedActivity extends Activity
{
  @Override
  protected void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    //opening transition animations
    overridePendingTransition(R.anim.activity_open_translate,R.anim.activity_close_scale);
  }

  @Override
  protected void onPause()
  {
    super.onPause();
    //closing transition animations
    overridePendingTransition(R.anim.activity_open_scale,R.anim.activity_close_translate);
  }
}

@kwent Nice work! Is it okay to call overridePendingTransition from onActivityCreated and onActivityPaused of Application.ActivityLifecycleCallbacks?

I'd recommend calling overridePendingTransition on startActivity and onBackPressed (assuming you've wire up your home buttons to onBackPressed)