image_gallery_saver 1.1.0

A new flutter plugin project for save image to gallery, iOS need to add the following keys to your Info.plist file.

example/lib/main.dart

import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:image_gallery_saver/image_gallery_saver.dart';

import 'package:permission_handler/permission_handler.dart';

import 'dart:ui' as ui;

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Save image to gallery',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  GlobalKey _globalKey = GlobalKey();

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    PermissionHandler().requestPermissions(<PermissionGroup>[
      PermissionGroup.storage, // 在这里添加需要的权限
    ]);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text("Save image to gallery"),
        ),
        body: Center(
          child: Column(
            children: <Widget>[
              RepaintBoundary(
                key: _globalKey,
                child: Container(
                  width: 200,
                  height: 200,
                  color: Colors.red,
                ),
              ),
              Container(
                child: RaisedButton(
                  onPressed: _saved,
                  child: Text("保存到相册"),
                ),
                width: 100,
                height: 50,
              )
            ],
          ),
        ));
  }

  _saved() async {
    RenderRepaintBoundary boundary =
        _globalKey.currentContext.findRenderObject();
    ui.Image image = await boundary.toImage();
    ByteData byteData = await image.toByteData(format: ui.ImageByteFormat.png);
    final result = await ImageGallerySaver.save(byteData.buffer.asUint8List());
    print(result);
  }
}