public class MainActivity extends Activity
{

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ImageView imageView = (ImageView) findViewById(R.id.imageView1);

        final AnimationDrawable background = (AnimationDrawable) imageView
                .getBackground();
        imageView.setOnClickListener(new OnClickListener()
        {

            public void onClick(View v)
            {
                background.start();
            }
        });
    }

}

public class MainActivity extends Activity
{

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ImageView imageView = (ImageView) findViewById(R.id.imageView1);

        final AnimationDrawable background = (AnimationDrawable) imageView
                .getBackground();
      

                background.start();
       

}