Flutter桌面壁纸设置插件desktop_wallpaper_set的使用

A new Flutter plugin for wallpaper set.

使用

要使用此插件，在您的 pubspec.yaml 文件中添加 desktop_wallpaper_set 作为依赖项。

示例

import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:desktop_wallpaper_set/desktop_wallpaper_set.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
import 'package:desktop_wallpaper_set/type.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = '未知';
  String _setImgBtnText = '设置图片壁纸';
  String _setVideoBtnText = '设置视频壁纸';

  final _desktopWallpaperSetPlugin = DesktopWallpaperSet();

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();
  }

  // 平台消息是异步的，所以我们初始化在异步方法中。
  Future<void> initPlatformState() async {
    String platformVersion;
    // 平台消息可能会失败，所以我们使用一个带有 try/catch 的 PlatformException。
    // 我们还处理消息可能返回 null 的情况。
    try {
      platformVersion = await _desktopWallpaperSetPlugin.getPlatformVersion() ?? '未知平台版本';
    } on PlatformException {
      platformVersion = '获取平台版本失败。';
    }

    // 如果在异步平台消息飞行时小部件从树中被移除，我们想要丢弃回复而不是调用
    // setState 来更新我们的不存在的外观。
    if (!mounted) return;

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

  Future<void> onSetImgWallpaper() async {
    String setBtnText;
    final file = await DefaultCacheManager().getSingleFile(
        "http://i0.hdslb.com/bfs/baselabs/d8e091a5be327e2a24fa62f794281448a2010f7f.png");
    setBtnText = await _desktopWallpaperSetPlugin.setWallpaper(
            file.path, WallpaperType.img) ??
        '错误';
    setState(() {
      _setImgBtnText = setBtnText;
    });
  }

  Future<void> onSetVideoWallpaper() async {
    String setBtnText;
    final file = await DefaultCacheManager().getSingleFile(
        "https://activity.hdslb.com/blackboard/static/20220829/a370089fc7c797ab7a9d638df8c9cbf7/PaGtZVhRco.mp4");
    setBtnText = await _desktopWallpaperSetPlugin.setWallpaper(
            file.path, WallpaperType.video) ??
        '错误';
    setState(() {
      _setVideoBtnText = setBtnText;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('壁纸设置插件'),
        ),
        body: Center(
          child: Column(
            children: [
              Text('运行在: $_platformVersion\n'),
              ElevatedButton(
                  onPressed: onSetImgWallpaper, child: Text(_setImgBtnText)),
              const SizedBox(
                height: 20,
              ),
              ElevatedButton(
                  onPressed: onSetVideoWallpaper, child: Text(_setVideoBtnText))
            ],
          ),
        ),
      ),
    );
  }
}

说明

1. 导入必要的库:

   import 'package:flutter/material.dart';
   import 'dart:async';
   import 'package:flutter/services.dart';
   import 'package:desktop_wallpaper_set/desktop_wallpaper_set.dart';
   import 'package:flutter_cache_manager/flutter_cache_manager.dart';
   import 'package:desktop_wallpaper_set/type.dart';
   

2. 初始化插件:

   final _desktopWallpaperSetPlugin = DesktopWallpaperSet();
   

3. 获取平台版本信息:

   Future<void> initPlatformState() async {
     String platformVersion;
     try {
       platformVersion = await _desktopWallpaperSetPlugin.getPlatformVersion() ?? '未知平台版本';
     } on PlatformException {
       platformVersion = '获取平台版本失败。';
     }
     if (!mounted) return;
     setState(() {
       _platformVersion = platformVersion;
     });
   }
   

4. 设置图片壁纸:

   Future<void> onSetImgWallpaper() async {
     String setBtnText;
     final file = await DefaultCacheManager().getSingleFile(
         "http://i0.hdslb.com/bfs/baselabs/d8e091a5be327e2a24fa62f794281448a2010f7f.png");
     setBtnText = await _desktopWallpaperSetPlugin.setWallpaper(
             file.path, WallpaperType.img) ??
         '错误';
     setState(() {
       _setImgBtnText = setBtnText;
     });
   }
   

5. 设置视频壁纸:

   Future<void> onSetVideoWallpaper() async {
     String setBtnText;
     final file = await DefaultCacheManager().getSingleFile(
         "https://activity.hdslb.com/blackboard/static/20220829/a370089fc7c797ab7a9d638df8c9cbf7/PaGtZVhRco.mp4");
     setBtnText = await _desktopWallpaperSetPlugin.setWallpaper(
             file.path, WallpaperType.video) ??
         '错误';
     setState(() {
       _setVideoBtnText = setBtnText;
     });
   }
   

6. 构建界面:

   [@override](/user/override)
   Widget build(BuildContext context) {
     return MaterialApp(
       home: Scaffold(
         appBar: AppBar(
           title: const Text('壁纸设置插件'),
         ),
         body: Center(
           child: Column(
             children: [
               Text('运行在: $_platformVersion\n'),
               ElevatedButton(
                   onPressed: onSetImgWallpaper, child: Text(_setImgBtnText)),
               const SizedBox(
                 height: 20,
               ),
               ElevatedButton(
                   onPressed: onSetVideoWallpaper, child: Text(_setVideoBtnText))
             ],
           ),
         ),
       ),
     );
   }