免責(zé)聲明: 我只測試了Web端 和 Android端 可行哈文章來源地址http://www.zghlxwxcb.cn/news/detail-696880.html

import 'dart:io';
import 'package:flutter/services.dart';
import 'package:http/http.dart' as http;
import 'package:universal_html/html.dart' as html;
import 'package:oktoast/oktoast.dart';
import 'package:image_gallery_saver/image_gallery_saver.dart';
import 'package:permission_handler/permission_handler.dart';




//申請(qǐng)存 本地存儲(chǔ) 和 相冊(cè) 權(quán)限
Future<bool> getPhotoPermission() async {
  if (Platform.isIOS) {
    var storageStatus = await Permission.storage.status;
    var photosStatus = await Permission.photos.status;
    if (storageStatus.isDenied || photosStatus.isDenied) {
      Map<Permission, PermissionStatus> statuses = await [
        Permission.storage,
        Permission.photos,
      ].request();
    }
    return storageStatus.isGranted && photosStatus.isGranted;
  } else {
    var storageStatus = await Permission.storage.status;
    var photosStatus = await Permission.photos.status;
    if (storageStatus.isDenied || photosStatus.isDenied) {
      Map<Permission, PermissionStatus> statuses = await [
        Permission.storage,
        Permission.photos,
      ].request();
    }
    return storageStatus.isGranted && photosStatus.isGranted;
  }
}

// 根據(jù)網(wǎng)絡(luò)路徑保存圖片到相冊(cè)
Future<void> saveImage(String imageUrl) async {
  final response = await http.get(Uri.parse(imageUrl));
  final bytes = response.bodyBytes;


  if (kIsWeb) {
    final imageData = Uint8List.fromList(bytes);
    final blob = html.Blob([imageData], 'image/jpeg');
    final url = html.Url.createObjectUrlFromBlob(blob);
    final anchor = html.AnchorElement(href: url);
    String timestamp = DateTime.now().millisecondsSinceEpoch.toString();
    anchor.download = 'image_$timestamp.jpg';
    anchor.click();
    html.Url.revokeObjectUrl(url);
  } else {
    if (Platform.isAndroid || Platform.isIOS) {
      bool permission = await getPhotoPermission();
      if (permission) {
        if (Platform.isIOS) {
          // 自動(dòng)以時(shí)間戳命名
          final result = await ImageGallerySaver.saveImage(bytes);
          if (result != null) {
            showToast("保存成功");
          } else {
            print('error');
          }
        } else {
          //安卓
          // 自動(dòng)以時(shí)間戳命名
          final result = await ImageGallerySaver.saveImage(bytes);
          if (result != null) {
            showToast("保存成功");
          } else {
            print('error');
          }
        }
      } else {
        //重新請(qǐng)求--第一次請(qǐng)求權(quán)限時(shí)，保存方法不會(huì)走，需要重新調(diào)一次
        saveImage(imageUrl);
      }
    } else {
      throw PlatformException(
        code: 'PLATFORM_NOT_SUPPORTED',
        message: 'Saving images is not supported on this platform.',
      );
    }
  }
}

到了這里，關(guān)于【Flutter】支持多平臺(tái) 多端保存圖片到本地相冊(cè) (兼容 Web端 移動(dòng)端 android 保存到本地)的文章就介紹完了。如果您還想了解更多內(nèi)容，請(qǐng)?jiān)谟疑辖撬阉鱐OY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！