android Button 的按下和抬起事件监听

代码实现的功能是使得一个按钮在按下的实现显示光色图安，抬起的时候的显示黄色图案。

然后图案自己设置形状。当然还可以缺一角什么的。。。。。。

为Button绑定 OnTouchListener 监听器。

public class AppMain extends Activity{private Button mButton;    /** Called when the activity is first created. */    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                ButtonListener b = new ButtonListener();               mButton = (Button)findViewById(R.id.button1);        mButton.setOnClickListener(b);        mButton.setOnTouchListener(b);        mButton.setBackgroundResource(R.drawable.green);            }        class ButtonListener implements OnClickListener, OnTouchListener{public void onClick(View v) {if(v.getId() == R.id.button1){Log.d("test", "cansal button ---> click");}}public boolean onTouch(View v, MotionEvent event) {if(v.getId() == R.id.button1){if(event.getAction() == MotionEvent.ACTION_UP){Log.d("test", "cansal button ---> cancel");mButton.setBackgroundResource(R.drawable.green);} if(event.getAction() == MotionEvent.ACTION_DOWN){Log.d("test", "cansal button ---> down");mButton.setBackgroundResource(R.drawable.yellow);}}return false;}    }}