修正android 處理連續按鍵兩次

1.變數初始化：

private  boolean isExit = false;  private  boolean hasTask = false;

2.按鍵捕捉（比如放在onTouchDown函數中進行按鍵監聽

PressHomeKeyCount localHandler = new PressHomeKeyCount();if(isExit == false ) {  isExit = true;if(!hasTask) {Message localMessage = new Message();localMessage.what = 0;localHandler.sendEmptyMessageDelayed(localMessage.what, 500L);}else{if(mRecentApplication.getVisibility() == View.VISIBLE){mRecentApplication.setVisibility(View.INVISIBLE);isExit = false;hasTask = false;}}}else{if(mRecentApplication.getVisibility() == View.INVISIBLE){mRecentApplication.setVisibility(View.VISIBLE);}}

3.Handle對象

public class PressHomeKeyCount extends Handler {          public void handleMessage(final Message msg) {          isExit = false;                hasTask = true;           }  } 

上邊的做法會出現死迴圈，我又對它進行了改進，以下是改進後的代碼，經過測試沒什麼問題，其中變數初始化一樣

2.按鍵捕捉

if(isExit == false ) {            isExit = true;          if(!hasTask) {              Message localMessage = new Message();              localMessage.what = 0;              localHandler.sendEmptyMessageDelayed(localMessage.what, 500L);          }          else{          isExit = false;              hasTask = false;              localHandler.removeMessages(0);            if(mRecentApplication.getVisibility() == View.VISIBLE){            mRecentApplication.setVisibility(View.INVISIBLE);            }        }     }     else{ if(mRecentApplication.getVisibility() == View.INVISIBLE){mRecentApplication.setVisibility(View.VISIBLE);}localHandler.removeMessages(0); isExit = false; hasTask = true;     }

3.Handler對象

public class PressHomeKeyCount extends Handler {          public void handleMessage(final Message msg) {          isExit = false;                hasTask = false;           }  }