Flutter解决按钮请求防重复提交【转】

onTap: (){
    // 防重复提交
    if(lastPopTime == null || DateTime.now().difference(lastPopTime) > Duration(seconds: 2)){
        lastPopTime = DateTime.now();
        _payOrder(context);
    }else{
        lastPopTime = DateTime.now();
        MyUtils.showMessage("请勿重复点击！");
    }
},

来源：https://blog.csdn.net/codekxx/article/details/102524576