Android Tutorial

By : Ketan Bhimani

280 

ImageView img = (ImageView)findViewById(R.id.ImageView1);
BitmapDrawable frame1 = (BitmapDrawable)getResources().
getDrawable(R.drawable.f1);
BitmapDrawable frame2 = (BitmapDrawable)getResources().
getDrawable(R.drawable.f2);
BitmapDrawable frame3 = (BitmapDrawable)getResources().
getDrawable(R.drawable.f3);
int reasonableDuration = 250;
AnimationDrawable mAnimation = new AnimationDrawable();
mAnimation.addFrame(frame1, reasonableDuration);
mAnimation.addFrame(frame2, reasonableDuration);
mAnimation.addFrame(frame3, reasonableDuration);
img.setBackgroundDrawable(mAnimation);

To name the animation loop continuously,we can call the

setOneShot() method:

mAnimation.setOneShot(false);

To begin the animation,we call the start() method:

mAnimation.start();

We can end our animation at any time using the stop() method:

mAnimation.stop();

Although we used an ImageView background in this example, you

can use a variety of different View widgets for animations. For

example, you can instead use the Image Switcher view and change

the displayed Drawable resource using a timer. This sort of

operation is best done on a separate thread. The resulting

animation might look something like Figure—you just have to

imagine it moving.

Working with Tweened Animations

With tweened animation, you can provide a single Drawable

resource—it is a Bitmap graphic, a ShapeDrawable, a TextView, or

any other type of View object—and the intermediate frames of the