dd_js_util 0.1.0

Flutterweb端工具类

example/lib/main.dart

import 'package:dd_js_util/widget/count_down.dart';
import 'package:dd_js_util/widget/picture_selection.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:dd_js_util/dd_js_util.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion = await DdJsUtil.platformVersion ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  final data = DateTime.now().add(Duration(hours: 2));

  final CountDownController _controller = new CountDownController();

  final PictureSelectionController _pictureSelectionController = new PictureSelectionController();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: SingleChildScrollView(
          child: Column(
            children: [
              Center(
                child: Text('Running on: $_platformVersion\n'),
              ),
              TextButton(
                  onPressed: () async {
                    final result = await DdJsUtil.isWeChatBrowser;
                    print(result);
                  },
                  child: Text('是否为微信浏览器')),
              CountDown(
                endTime: "${data.toIso8601String()}",
                onEnd: () {
                  print('倒计时结束');
                },
                autoStart: false,
                controller: _controller,
              ),
              TextButton(
                  onPressed: () {
                    _controller.start();
                  },
                  child: Text('开始倒计时')),
              TextButton(
                  onPressed: () {
                    _controller.stop();
                  },
                  child: Text('结束倒计时')),
              TextButton(
                  onPressed: () {
                    _controller.refresh();
                  },
                  child: Text('刷新UI')),
              PictureSelection(
                multipleChoice: true,
                controller: _pictureSelectionController,
                menusBuilder: (a, b) {
                  return Container(
                    color: Colors.pink,
                    child: SingleChildScrollView(
                        child: Column(
                      children: [
                        TextButton(
                          child: Text('图库选择'),
                          onPressed: () async {
                            await a();
                          },
                        ),
                        TextButton(
                          child: Text('相机选择'),
                          onPressed: () async {
                            await b();
                          },
                        )
                      ],
                    )),
                  );
                },
                placeholderBuilder: (size) {
                  return SizedBox(
                      width: size.width,
                      height: size.height,
                      child: Center(
                        child: Column(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            Icon(Icons.add),
                            SizedBox(height: 2),
                            Text('添加图片'),
                          ],
                        ),
                      ));
                },
                itemBuilder: ( context, file, size, onRemove){
                  return SizedBox(
                    width: size.width,
                    height: size.height,
                    child: GestureDetector(child: Image.file(file),onTap:(){
                      //点击图片删除
                      onRemove(file);
                    }),
                  );
                },
              ),
              TextButton(
                onPressed: () {
                  final files = _pictureSelectionController.getFiles;
                  print(files);
                },
                child: Text('获取全部图片'),
              ),
              TextButton(
                onPressed: () {
                  _pictureSelectionController.clean();
                },
                child: Text('清空全部图片'),
              )
            ],
          ),
        ),
      ),
    );
  }
}