public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK ) {
if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
exit();
}
}
return super.dispatchKeyEvent(event);
}
public void exit() {
if (!isExit) {
isExit = true;
Toast.makeText(getApplicationContext(), "再点击一次退出",
Toast.LENGTH_SHORT).show();
mHandler.sendEmptyMessageDelayed(0, 2000);
} else {
moveTaskToBack(true);
//finish();
//System.exit(0);
}
}
private static Boolean isExit = false;
Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
isExit = false;
}
};