Android Button 的按下和抬起事件监听
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;
- }
- }
- }
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