flutter跳转返回传参简短小计回顾

跳转传参，然后返回参数，根据参数，进行相应操作

new InkWell(
          onTap: () {
            Navigator.push(context,
                    new MaterialPageRoute(builder: (context) => new Settings()))
                .then((value) {
              print("********** out ***** $value ");
              _isLogin = false;
              setState(() {
                print("********** 打印第二次 out ***** $value ");
              });
            });
          },
          child: itemWidget("image/settings.png", "Setting"),
        )

//settings 里面
onWillPop: (){
          Navigator.pop(context,"out");
        });