Android随笔之——按键长按事件onKeyLongPress

　　现在安卓手机实体键是越来越少了，但还是有的，恰好自己就碰上了:按键的长按事件...百度了一些博客，内容都基本上是完全一样的，虽然可以捕获到长按事件，但却会和正常的单击冲突。幸好最近开个VPN，google，耶~正确答案马上呈现在眼前，特此记录，以防不时之需。

　　这里我就直接贴谷歌的代码的，很容易懂，不解释，原文

 private boolean shortPress = false;

 @Override
 public boolean onKeyLongPress(int keyCode, KeyEvent event) {
     if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
         shortPress = false;
         Toast.makeText(this, "longPress", Toast.LENGTH_LONG).show();
         return true;
     }
     //Just return false because the super call does always the same (returning false)
     return false;
 }

 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
     if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
         if(event.getAction() == KeyEvent.ACTION_DOWN){
             event.startTracking();
             if(event.getRepeatCount() == 0){
                 shortPress = true;
             }
             return true;
         }
     }
     return super.onKeyDown(keyCode, event);
 }

 @Override
 public boolean onKeyUp(int keyCode, KeyEvent event) {
     if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
         if(shortPress){
             Toast.makeText(this, "shortPress", Toast.LENGTH_LONG).show();
         } else {
             //Don't handle longpress here, because the user will have to get his finger back up first
         }
         shortPress = false;
         return true;
     }
     return super.onKeyUp(keyCode, event);
 }