This is a simple project that will explain how to use animations in android through
AnimationDrawable. The documentation was a bit outdated. But you might hit a dead-end if you try to call the animation's start method from within any of the Activity's life-cycle methods.
In this example, there is an ImageView with it's "src" value set to an image. The
ImageView's background is set with you own AnimationDrawable, basically an xml in your res/drawable folder. In the activity, the
ImageView has a click listener, which creates an AnimationDrawable from the ImageView's background, and just calls the start method of the
AnimationDrawable class.
Here is a sample AnimationDrawable described through XML.
<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item android:drawable="@drawable/black" android:duration="200" />
<item android:drawable="@drawable/cyan" android:duration="200" />
<item android:drawable="@drawable/green" android:duration="200" />
<item android:drawable="@drawable/magenta" android:duration="200" />
<item android:drawable="@drawable/navy" android:duration="200" />
<item android:drawable="@drawable/orange" android:duration="200" />
<item android:drawable="@drawable/pink" android:duration="200" />
<item android:drawable="@drawable/white" android:duration="200" />
<item android:drawable="@drawable/yellow" android:duration="200" />
</animation-list>
And here is the code that gets your animation started.
imageView = (ImageView) findViewById(R.id.ImageButton01);
imageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
AnimationDrawable animator = (AnimationDrawable) imageView.getBackground();
imageView.setImageDrawable(null);
animator.start();
}
});
One point to notice is that, you have to remove the ImageView's "src" value, so that the animation is visible, since the animation works by changing the background of the ImageView, else, your animation would be blocked by the ImageView's "src" image.
Once you are done, you can stop the animation, and reset the ImageView's "src" to it's original image.
// Call this method to stop the animation
public void stopAnimation(){
AnimationDrawable animator = (AnimationDrawable) imageView.getBackground();
animator.stop();
imageView.setImageResource(R.drawable.icon);
}
You can find the whole
source code for this example here.
It's been some time that I had tried getting the Market up and running on a 2.2 a.k.a Froyo emulator. On a previous post, I had described how to setup an emulator (1.5 and 1.6) with the Market app. Today, I got a comment on that post which points to a 2.2 image that does the same. You just have to download that image file and follow exactly the same steps to set it up.
