An AnimationDrawable defined in XML consists of a single <animation-list> element, and a series of nested <item> tags. Each item defines a frame of the animation. See the example below. spin_animation.xml file in res/drawable/ folder:<!-- Animation frames are wheel0.png -- wheel5.png files inside theres/drawable/ folder --><animation-list android:id="selected" android:oneshot="false"><item android:drawable="@drawable/wheel0" android:duration="50" /><item android:drawable="@drawable/wheel1" android:duration="50" /><item android:drawable="@drawable/wheel2" android:duration="50" /><item android:drawable="@drawable/wheel3" android:duration="50" /><item android:drawable="@drawable/wheel4" android:duration="50" /><item android:drawable="@drawable/wheel5" android:duration="50" /></animation-list>Here is the code to load and play this animation.// Load the ImageView that will host the animation and// set its background to our AnimationDrawable XML resource.ImageView img = (ImageView)findViewById(R.id.spinning_wheel_image);img.setBackgroundResource(R.drawable.spin_animation);// Get the background, which has been compiled to an AnimationDrawable object.AnimationDrawable frameAnimation = (AnimationDrawable) img.getBackground();// Start the animation (looped playback by default).frameAnimation.start()；

if(!mAnimation.isRunning()){mAnimation.start();
}

      /*** <p>Indicates whether the animation is currently running or not.</p>** @return true if the animation is running, false otherwise*/public boolean isRunning() {return mCurFrame > -1;}

/*** <p>Stops the animation. This method has no effect if the animation is* not running.</p>** @see #isRunning()* @see #start()*/public void stop() {if (isRunning()) {unscheduleSelf(this);}}@Overridepublic void unscheduleSelf(Runnable what) {mCurFrame = -1;super.unscheduleSelf(what);}