Android开发之背景动画简单实现方法

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" >
  <item
    android:drawable="@drawable/v_anim1"
    android:duration="300">
  </item>
  <item
    android:drawable="@drawable/v_anim2"
    android:duration="300">
  </item>
  <item
    android:drawable="@drawable/v_anim3"
    android:duration="300">
  </item>
</animation-list>

view viewanim = view.findviewbyid(r.id.id_recorder_anim);
viewanim.setbackgroundresource(r.drawable.play);
animationdrawable drawable = (animationdrawable) viewanim.getbackground();
drawable.start();

if (drawable.isrunning()) {
  drawable.stop();
}