Flutter-FloatingActionButton中的SimpleDialog

本文介绍了Flutter-FloatingActionButton中的SimpleDialog的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想在点击 FloatingActionButton 之后创建一个 SimpleDialog ，但是当按下该按钮时却什么也没有

I'm trying to create a SimpleDialog after a tap on the FloatingActionButton, however when pressing that button nothing happens.

我在做什么错了？

import "package:flutter/material.dart";

void main() {
  runApp(new ControlleApp());
}

class ControlleApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) => new Scaffold(
    appBar: new AppBar(
      backgroundColor: new Color(0xFF26C6DA),
    ),
    floatingActionButton: new FloatingActionButton(
      tooltip: 'Add',
      child: new Icon(Icons.add),
      backgroundColor: new Color(0xFFF44336),
      onPressed: (){
        new SimpleDialog(
          title: new Text('Test'),
          children: <Widget>[
            new RadioListTile(
              title: new Text('Testing'), value: null, groupValue: null, onChanged: (value) {},
            )
          ],
        );
      }
    ),
  );
}

推荐答案

您需要对此进行包装

showDialog(context: context, child:
    new AlertDialog(
      title: new Text("My Super title"),
      content: new Text("Hello World"),
    )
);

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