Android屏幕双击事件的捕获简单示例

public class TouchLayout extends RelativeLayout {  
 
  public Handler doubleTapHandler = null;  
 
  protected long lastDown = -1;  
  public final static long DOUBLE_TIME = 500;  
 
  
 public TouchLayout(Context context) {  
    super(context);  
     
  }  
 
  public TouchLayout(Context context, AttributeSet attrs) {  
    super(context, attrs);  
     
  }  
 
  public TouchLayout(Context context, AttributeSet attrs, int defStyle) {  
    super(context, attrs, defStyle);  
     
  }  
 
    
  public boolean onTouchEvent(MotionEvent event) {  
     this.handleEvent(event);  
 
     if (event.getAction() == MotionEvent.ACTION_DOWN) {  
      long nowDown = System.currentTimeMillis();  
 
      if (nowDown - lastDown