制作动画效果的Button

转自：http://stackoverflow.com/questions/5918592/i-need-to-make-this-animation-display-as-a-button-background

Question：

if anyone could help I would be really appreciative. Basically I want to get this animated GIF or whatever it needs, to be displayed as a button background. When I click the button I want it to change to this animation that shows a spinner spinning. Any
idea how to get this animated GIF to work as a button background as a drawable?

Answer:

Here is how I would do it. First split the GIF and add each image to your drawable folder. Then add new xml file to your drawable (animation.xml).... see example below

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item android:drawable="@drawable/santa1" android:duration="200" />
<item android:drawable="@drawable/santa2" android:duration="200" />
<item android:drawable="@drawable/santa3" android:duration="200" />
<item android:drawable="@drawable/santa4" android:duration="200" />
<item android:drawable="@drawable/santa5" android:duration="200" />
<item android:drawable="@drawable/santa6" android:duration="200" />
<item android:drawable="@drawable/santa7" android:duration="200" />

</animation-list>

Then when you want it to start call it with this example below....

b_1.setBackgroundResource(R.drawable.animation);
AnimationDrawable b1Amin = (AnimationDrawable) b_1.getBackground();
b1Amin.start();

参考链接：https://forums.xamarin.com/discussion/209/create-animation-in-the-button