Android screen Double-click event Capture Simple Example _android

In Android game development, we may often have to double click on the screen like a PC operation. For screen-double-clicking, the Android 1.6 version did not provide a perfect gesture recognition class before, Android The 1.5 SDK provides Android.view.GestureDetector.OnDoubleTapListener, but the test does not work properly, for unknown reasons. Ultimately our solution is like the following code:

Java code

public class Touchlayout extends Relativelayout {public Handler doubletaphandler = null;  
  protected Long Lastdown =-1;  
 
  
 Public final static long double_time = 500;  
     
  Public Touchlayout {Super (context);  
     
  Public Touchlayout (context, AttributeSet attrs) {Super (context, attrs);  
     
  Public Touchlayout (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 < Double_time) {if (Doubletaphandler!= null) Doubletaphandler.  
 
      Sendemptymessage (-1);  
      else {lastdown = Nowdown;  
 
   } return true; } protected void Handleevent (MotioNevent event) {switch (event.getaction ()) {case Motionevent.action_down://do sth can be processed here BR  
 
    Eak  
    Case MOTIONEVENT.ACTION_UP://do sth;  }  
 
   }  
 
 
}

The above is a sample code for the event capture of the Android screen, followed by additional information, hoping to help develop a friend of Android applications.