按两次退出程序

minglu_jiang

于 2016-02-22 10:52:02 发布

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分类专栏：技术分享文章标签： Android

本文链接：https://blog.csdn.net/baduspace/article/details/50715401

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@Override
    public void onBackPressed() {
        back2App();
    }

    private boolean isBack = false;
    private Handler backHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            isBack = false;
        }
    };

    private void back2App() {
        if (isBack) {
            finish();
        } else {
            isBack = true;
            Toast.makeText(mContext, "再按一次退出程序", Toast.LENGTH_SHORT).show();
            backHandler.sendEmptyMessageDelayed(0, 2000);
        }
    }