[Android实例] Android ImageButton动画效果

imageButton.setOnTouchListener(new OnTouchListener(){ 



@Override 



public boolean onTouch(View v, MotionEvent event) { 



if(event.getAction() == MotionEvent.ACTION_DOWN){ 



//更改为按下时的背景图片 



v.setBackgroundResource(R.drawable.pressed); 



}else if(event.getAction() == MotionEvent.ACTION_UP){ 



//改为抬起时的图片 



v.setBackgroundResource(R.drawable.released); 



} 



return false; 



} 



});

<?xml version="1.0" encoding="UTF-8"?> 

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 

<item android:state_pressed="false" android:drawable="@drawable/button_add" /> 

<item android:state_pressed="true" android:drawable="@drawable/button_add_pressed" /> 

<item android:state_focused="true" android:drawable="@drawable/button_add_pressed" /> 

<item android:drawable="@drawable/button_add" /> 

</selector>

 这个文件放在drawable目录下面。命名为button_add_x.xml
       使用的时候:

<ImageButton 

android:id="@+id/ImageButton" 

android:layout_width="wrap_content" 

android:layout_height="wrap_content" 

android:background="#00000000" 

android:src="@drawable/button_add_x" > 

</ImageButton>