Adding animation to ViewFlipper

Using predefined animation:

mViewFlipper = (ViewFlipper) findViewById(R.id.viewFlipper);
mViewFlipper.setInAnimation(this, R.anim.abc_slide_in_bottom);
mViewFlipper.setOutAnimation(this, R.anim.abc_slide_out_bottom);

You can also define custom animation in an xml file and save it in res/anim folder, then call setInAnimation or setOutAnimation as follows:

res/anim/fade_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
  android:interpolator="@android:anim/linear_interpolator">
  <alpha
      android:fromAlpha="1.0"
      android:toAlpha="0.1"
      android:duration="2000"
      />
</set>

mViewFlipper = (ViewFlipper) findViewById(R.id.viewFlipper);
mViewFlipper.setOutAnimation(this, R.anim.fade_out);