android_雙擊退出

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/** * 設定快速雙擊退出程式 */@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {// TODO Auto-generated method stubif (keyCode == KeyEvent.KEYCODE_BACK) {exitBy2Click();}return false;}/** * 雙擊退出函數 zhaoyazhi */private void exitBy2Click() {// TODO Auto-generated method stubTimer tExit = null;if (isExit == false) {isExit = true;// 準備退出Toast.makeText(this, "再按一次退出程式", Toast.LENGTH_SHORT).show();tExit = new Timer();tExit.schedule(new TimerTask() {@Overridepublic void run() {isExit = false;// 取消退出}}, 2000);// 如果2秒沒有按下返回鍵則啟動定時器取消掉剛才執行的任務} else {// 結束所有的介面和背景程式AccessTokenKeeper.clear(getApplication());ActivityManager activityMgr = (ActivityManager) getSystemService(ACTIVITY_SERVICE);activityMgr.restartPackage(getPackageName());MyApp.getInstance().exit();System.exit(0);finish();}}

android_雙擊退出