An elegant Flutter Dialog solution

Flutterappworld

2 years ago

Flutter 2：Please use flutter_smart_dialog: 4.0.9+5

Flutter 3：Please use the latest version

Introduction

An elegant Flutter Dialog solution.

pub，github，web effect

Some Effect

Advantage

Do not need BuildContext
Can penetrate dark background, click on the page behind dialog
Support dialog stack，close the specified dialog
Support positioning widget, display the specified location dialog
Support highlight feature，dissolve the specified location mask
Easily implement toast，loading，attach dialog，custome dialog

Quick start

Install

latest version：install pub

Initialization

initialization

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage,
      // here
      navigatorObservers: [FlutterSmartDialog.observer],
      // here
      builder: FlutterSmartDialog.init(),
    );
  }
}

Advanced initialization: configure global custom Loading and Toast

SmartDialog’s showLoading and showToast provide a default style. Of course, custom param are definitely supported.

SmartDialog custom Loading or Toast is very simple: However, when using it, it may make you feel a little troublesome
for example
- Use custom Loading: SmartDialog.showLoading(builder: (_) => CustomLoadingWidget);
- The effect we want must be like this: SmartDialog.showLoading();
In view of the above considerations, I added the function of setting custom default Loading and Toast styles at the entrance

Let me show you the following

The entry needs to be configured: implement toastBuilder and loadingBuilder, and pass in custom Toast and Loading

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage,
      // here
      navigatorObservers: [FlutterSmartDialog.observer],
      // here
      builder: FlutterSmartDialog.init(
        //default toast widget
        toastBuilder: (String msg) => CustomToastWidget(msg: msg),
        //default loading widget
        loadingBuilder: (String msg) => CustomLoadingWidget(msg: msg),
      ),
    );
  }
}

Easy usage

toast usage💬

SmartDialog.showToast('test toast');

loading usage⏳

SmartDialog.showLoading();
await Future.delayed(Duration(seconds: 2));
SmartDialog.dismiss();

dialog usage🎨

SmartDialog.show(builder: (context) {
  return Container(
    height: 80,
    width: 180,
    decoration: BoxDecoration(
      color: Colors.black,
      borderRadius: BorderRadius.circular(10),
    ),
    alignment: Alignment.center,
    child:
    Text('easy custom dialog', style: TextStyle(color: Colors.white)),
  );
});

You may have questions

For details, please check： Some Consideration Details

Attach Chapter

For details, please check： Attach Chapter Details

This is a very important function. I wanted to add it a long time ago, but it was busy and has been shelved; New Year’s Day (2022.1.1) started, and it took some time to complete this function and related demos.

Dialog Chapter

For details, please check： Dialog Chapter Details

Loading Chapter

For details, please check： Loading Chapter Details

Toast Chapter

For details, please check： Toast Chapter Details

Little tricks of anger

There is a scene that compares the egg cone

We encapsulated a small component using StatefulWidget
In a special situation, we need to trigger a method inside this component outside the component
There are many implementation methods for this kind of scene, but it may be a little troublesome to make it

Here is a simple idea, which can be triggered very easily, a method inside the component

Create a widget

class OtherTrick extends StatefulWidget {
  const OtherTrick({Key? key, this.onUpdate}): super(key: key);

  final Function(VoidCallback onInvoke)? onUpdate;

  @override
  _OtherTrickState createState() => _OtherTrickState();
}

class _OtherTrickState extends State<OtherTrick> {
  int _count = 0;

  @override
  void initState() {
    // here
    widget.onUpdate?.call(() {
      _count++;
      setState(() {});
    });

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Container(
        padding: EdgeInsets.symmetric(horizontal: 50, vertical: 20),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(10),
        ),
        child: Text('Counter: $_count', style: TextStyle(fontSize: 30.0)),
      ),
    );
  }
}

Show this component and then trigger it externally

void _otherTrick() async {
  VoidCallback? callback;

  // display
  SmartDialog.show(
    alignment: Alignment.center,
    builder: (_) =>
    OtherTrick(onUpdate: (VoidCallback onInvoke) => callback = onInvoke),
  );

  await Future.delayed(const Duration(milliseconds: 500));

  // handler
  SmartDialog.show(
    alignment: Alignment.centerRight,
    maskColor: Colors.transparent,
    builder: (_) {
      return Container(
        height: double.infinity,
        width: 150,
        color: Colors.white,
        alignment: Alignment.center,
        child: ElevatedButton(
          child: const Text('add'),
          onPressed: () => callback?.call(),
        ),
      );
    },
  );
}