ProgressBar动画

步骤一：在res/anim文件夹下定义一个动画，例如progress_bar_anim.xml

[html] view plaincopy

1. <?xml version="1.0" encoding="UTF-8"?>  
2. <animation-list android:oneshot="false"  
3.     xmlns:android="http://schemas.android.com/apk/res/android">  
4.     <item android:drawable="@drawable/loading01" android:duration="100" />  
5.     <item android:drawable="@drawable/loading02" android:duration="100" />  
6.     <item android:drawable="@drawable/loading03" android:duration="100" />  
7.     <item android:drawable="@drawable/loading04" android:duration="100" />  
8.     <item android:drawable="@drawable/loading05" android:duration="100" />  
9.     <item android:drawable="@drawable/loading06" android:duration="100" />  
10.     <item android:drawable="@drawable/loading07" android:duration="100" />  
11.     <item android:drawable="@drawable/loading08" android:duration="100" />  
12.     <item android:drawable="@drawable/loading09" android:duration="100" />  
13.     <item android:drawable="@drawable/loading10" android:duration="100" />  
14. </animation-list>  

步骤二：在定义ProgressBar的地方，调用该动画

[java] view plaincopy

1. <ProgressBar  
2.     android:id="@+id/searching_pb"  
3.     android:layout_width="30dp"  
4.     android:layout_height="30dp"  
5.     android:indeterminate="false"  
6.     android:indeterminateDrawable="@anim/progress_bar_anim"  
7.     />