Android 两张照片相互淡出

在res/drawable下面新建一个stylr.xml

<?xml version="1.0" encoding="UTF-8"?>
<transition xmlns:android="http://schemas.android.com/apk/res/android">  
	<item android:drawable="@drawable/badtz1"/>
	<item android:drawable="@drawable/badtz2"/>
</transition>

public class Draw01Activity extends Activity {
    /** Called when the activity is first created. */

    @Override
    public void onCreate(Bundle savedInstanceState) {
    	 super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         
 		 Resources res = getResources();
         TransitionDrawable transition = (TransitionDrawable) res.getDrawable(R.drawable.stylr);
         ImageView mImageView = (ImageView) findViewById(R.id.imageView1);
         mImageView.setImageDrawable(transition);
         //2秒开始转换
         transition.startTransition(2000);
    }