wallpaperplugin 0.1.2

Flutter plugin to set wallpaper in android, it can be used to directly set any image or crop and set as wallpaper.

example/lib/main.dart

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

import 'package:flutter/services.dart';
import 'package:wallpaperplugin/wallpaperplugin.dart';
import 'package:dio/dio.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';

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

///Wallpaper example app showing how to use the wallpaperplugin
class WallpaperExampleApp extends StatefulWidget {
  @override
  _WallpaperExampleAppState createState() => _WallpaperExampleAppState();
}

class _WallpaperExampleAppState extends State<WallpaperExampleApp> {
  String _wallpaperStatus = 'Initial';

  final String _wallpaperImageUrl =
      'https://images.pexels.com/photos/2170473/pexels-photo-2170473.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940';

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

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String wallpaperStatus = 'Unexpected Result';
    if (await _checkAndGetPermission() != null) {
      final String _localFile =
          await _downloadFileUsingDio(_wallpaperImageUrl, 'test_wallpaper');
      // Platform messages may fail, so we use a try/catch PlatformException.
      try {
        Wallpaperplugin.setWallpaperWithCrop(localFile: _localFile);
        wallpaperStatus = 'new Wallpaper set';
      } on PlatformException {
        print('Platform exception');
        wallpaperStatus = 'Platform Error Occured';
      }
    }
    // 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(() {
      _wallpaperStatus = wallpaperStatus;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Wallpaper Plugin example app'),
        ),
        body: Center(
          child: Text('Wallpaper Status: $_wallpaperStatus\n'),
        ),
      ),
    );
  }

  ///This code helps in downloading a jpeg to local folder
  Future<String> _downloadFileUsingDio(String url, String _photoId) async {
    final Dio dio = Dio();
    final String dir = await _localPath;
    final String localFile = '$dir/$_photoId.jpeg';
    final File file = File(localFile);
    if (!file.existsSync()) {
      try {
        await dio.download(url, localFile,
            onReceiveProgress: (int received, int total) {
          if (total != -1) {
            print('Photo downloading : ' +
                (received / total * 100).toStringAsFixed(0) +
                '%');
          }
        });
        return localFile;
      } on PlatformException catch (error) {
        print(error);
      }
    }
    return localFile;
  }

  ///returns the local path + /wallpapers, this is where the image file is downloaded.
  Future<String> get _localPath async {
    final Directory appDocDirectory = await getExternalStorageDirectory();
    final Directory directory =
        await Directory(appDocDirectory.path + '/wallpapers')
            .create(recursive: true);
    // The created directory is returned as a Future.
    return directory.path;
  }

  /// This method checks for permission and if not given will request the user for the same.
  /// It will return true if permission is given, or else will return null
  static Future<bool> _checkAndGetPermission() async {
//    final PermissionStatus permission = await PermissionHandler()
//        .checkPermissionStatus(PermissionGroup.storage);
//    if (permission != PermissionStatus.granted) {
//      final Map<PermissionGroup, PermissionStatus> permissions =
//          await PermissionHandler()
//              .requestPermissions(<PermissionGroup>[PermissionGroup.storage]);
//      if (permissions[PermissionGroup.storage] != PermissionStatus.granted) {
//        return null;
//      }
//    }

    if(await Permission.storage.isGranted){
      return await (Permission.storage.request()).isGranted;
    }
    return true;
  }
}