Back button Flutter on a return Scaffold-CodePudding

I'm new to Flutter, so I apologize if the question is very basic.

My problem is with the back button... when I press it it sends me to a black page, but when I press the android back button it works fine. Is there a way to make that button the same as the one on the device?

In Android that button is not necessary, but in iOS it is.

My code is:

class FindDevicesScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    bool scanResult = false;
    bool connectedResult = false;
    return Scaffold(
      appBar: AppBar(
        leading: IconButton(
          icon: Icon(Icons.arrow_back),
          onPressed: () => Navigator.pop(context, false),
        ),
        title: Text('Find Devices'),
        actions: <Widget>[],
      ),

https://pub.dev/packages/flutter_blue/example (The example code doesn't have that function)

I tried with:

onPressed: () => Navigator.pop(context, false),

onPressed: () { Navigator.pop(context); },

But it does not work. It doesn't go back to the previous page, but to a black page with nothing.

CodePudding user response：

Have you tried using:

class FindDevicesScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    bool scanResult = false;
    bool connectedResult = false;
    return Scaffold(
      appBar: AppBar(
        leading: IconButton(
          icon: Icon(Icons.arrow_back),
          onPressed: () => Navigator.of(context).pop(false),
        ),
        title: Text('Find Devices'),
        actions: <Widget>[],
      ),

CodePudding user response：

Well, I'm new to flutter too but I had a similar problem and I solved it by using pushReplacement

Navigator.of(context).pushReplacement(route)

I don't know if this is correct or not but this was my workaround