Alert Dialog with custom Gif image

I would like to know how to create a custom Alert Dialog where you have an ImageView containing a GIF.

In my Main.

imgAndroid = (Button) findViewByid (R.id.imagandroid);
imgAndroid.setBackgroundResource (R.drawable.imagee);

anime = (AnimationDrawable) imgAndroid.getBackground;
anime.start();

Create a Drawable

<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false">
    <item android:drawable="@drawable/play" android:duration="1000" />
    <item android:drawable="@drawable/playum" android:duration="1000" />
    <item android:drawable="@drawable/playdois" android:duration="1000"/>
    <item android:drawable="@drawable/playtres" android:duration="1000"/>
    <item android:drawable="@drawable/playquatro" android:duration="1000"/>
    <item android:drawable="@drawable/playcinco" android:duration="1000"/>

</animation-list>

The code of my Alert Dialog

 public void testedialog (View View){
    final Dialog dialog = new Dialog(this);
    dialog.setContentView(R.layout.dialoggif);
    //button que leva para o menu
    Button irum = (Button) dialog.findViewById(R.id.button111);
    irum.setOnClickListener(new android.view.View.OnClickListener() {

        @Override
        public void onClick(View v) {
            setContentView(R.layout.menu);
            dialog.dismiss();
        }
    });
    //button que manda para o proximo nivel

    Button dialogButton = (Button) dialog.findViewById(R.id.button122);
    dialogButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            setContentView(R.layout.menu);
            dialog.dismiss();

        }
    });


    dialog.show();

}