Container(
                  margin: EdgeInsets.fromLTRB(220.w,155.h,0,0),
                  child: IconButton(
                    onPressed: (){
                      setState(() {
                        ChangeProfile(context);
                      });
                    },
                    icon: Icon(Icons.wifi_protected_setup),
                  ),
                ),

This is the code that opens an AlertDialog to change the profile.

 void ChangeProfile(BuildContext context) {
      final pro = Provider.of<Pro>(context, listen: false);
      US(context);
      int count = 0;
      showDialog(
        context: context,
        builder: (context) {
          return StatefulBuilder(
    
            builder: (BuildContext context, StateSetter setState) {
              return AlertDialog(
                // RoundedRectangleBorder - Dialog 화면 모서리 둥글게 조절
                shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(10.0)),
                //Dialog Main Title
                title: Column(
                  children: <Widget>[
                    Container(
                      width: 50.w,
                      height: 50.h,
                      child: Image.asset(
                        pro.currentProfile
                      ),
                    )
                  ],
                ),
                //
                content: SizedBox(
                  width: 230.w,
                  height: 230.h,
                  child: Column(
                    children: [
                      Row(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          SizedBox

(

                        width: 70.w,
                        height: 70.h,
                        child: OutlinedButton(
                          onPressed: (){
                            setState(() { // setState() 추가.
                              pro.currentProfile= 'image_profile/profile_1.png';
                            });
                          },
                          child: Image.asset('image_profile/profile_1.png'),
                        ),
                      ),
                      SizedBox(
                        width: 70.w,
                        height: 70.h,
                        child: OutlinedButton(
                          onPressed: (){
                            setState(() { // setState() 추가.
                              pro.currentProfile= 'image_profile/profile_2.png';
                            });
                          },
                          child: Image.asset('image_profile/profile_2.png'),
                        ),
                      ),

In this way, when the button in the AlertDialog is pressed, the currentProfile variable in the Provider is changed.

 actions: <Widget>[
              TextButton(
                child: Text(
                  "닫기",
                  style: TextStyle(
                    color: Colors.black,
                  ),
                ),
                onPressed: () {
                  setState(() {
                    Navigator.pop(context);
                  });

                },
              ),
            ],

Click the close button and it will pop up

PrintImage(
                  imagetext: pro.currentProfile,
                  xsize: 100.0,
                  ysize: 100.0,
                  hhh: 90.0,
                ),

When the currentProfile variable changes, the parent widget will output something like this

The values inside the AlertDialog are also successfully changed and when I check using the StatefulBuilder it changes well in real time. When I close the AlertDialog, the parent widget does nothing.

When another TextButton is pressed, PrintImage responds to the changed currentProfile value.

Is there a way to close the AlertDialog and refresh the build?

CodePudding user response：

Yes there is a way. return showDialog (which is Future) from your ChangeProfile method Since ChangeProfile method returns a Future we can now use .then method on the ChangeProfile and can refresh the build using setState.

As soon as the alert dialog is closed future gets completed and .then method executes.

               Container(
                  margin: EdgeInsets.fromLTRB(220.w,155.h,0,0),
                  child: IconButton(
                    onPressed: (){
                        ChangeProfile(context).then(
                        setState(() {
                           // update your widget
                        })
                      );
                                                                   
                    },
                    icon: Icon(Icons.wifi_protected_setup),
                  ),
                ),

Future<void> ChangeProfile(BuildContext context) {
      final pro = Provider.of<Pro>(context, listen: false);
      US(context);
      int count = 0;
      return showDialog<void>(
       // paste rest of your code here
      );
}