feat(update):添加图片长按下载

2026-04-22 11:35:25 +08:00
parent d6f27690c6
commit 74a5bba5f1
8 changed files with 427 additions and 68 deletions
--- a/lib/upload_image/down_load_image_tool.dart
+++ b/lib/upload_image/down_load_image_tool.dart
@@ -11,45 +11,50 @@ import 'package:image_gallery_saver_plus/image_gallery_saver_plus.dart';
 import 'package:permission_handler/permission_handler.dart';

 class DownLoadImageTool {
-
  // 请求照片库权限
  static Future<bool> requestPhotoPermission() async {
-    // 检查当前权限状态
-    // var status = await Permission.photos.status;
-    var status = await Permission.storage.request();
-    if (status.isDenied) {
-      // 请求权限
+    PermissionStatus status;
+    if (Platform.isIOS) {
+      status = await Permission.photosAddOnly.request();
+    } else {
      status = await Permission.photos.request();
-
-      // 如果用户拒绝了权限，可以显示一个解释
-      if (status.isPermanentlyDenied) {
-        // 打开应用设置，让用户手动启用权限
-        await openAppSettings();
-      }
    }

-    return status.isGranted;
+    if (status.isPermanentlyDenied) {
+      await openAppSettings();
+    }
+
+    return status.isGranted || status.isLimited;
  }

  // 或者请求存储权限（适用于Android）
  static Future<bool> requestStoragePermission() async {
+    if (Platform.isIOS) {
+      return requestPhotoPermission();
+    }
+
    if (Platform.isAndroid) {
      // 对于Android 13及以上版本
-      if (await DeviceInfoPlugin().androidInfo.then((info) => info.version.sdkInt) >= 33) {
+      if (await DeviceInfoPlugin()
+              .androidInfo
+              .then((info) => info.version.sdkInt) >=
+          33) {
        var status = await Permission.photos.request();
-        if(status == PermissionStatus.denied){
-          await requestPhotoPermission();
+        if (status.isPermanentlyDenied) {
+          await openAppSettings();
        }
-        return status.isGranted;
+        return status.isGranted || status.isLimited;
      } else {
        // 对于Android 13以下版本
        var status = await Permission.storage.request();
+        if (status.isPermanentlyDenied) {
+          await openAppSettings();
+        }
        return status.isGranted;
      }
-    } else {
-      // iOS使用照片权限
-      return await requestPhotoPermission();
    }
+
+    return false;
  }

  ///保存到相册
@@ -98,10 +103,9 @@ class DownLoadImageTool {
    final result = await ImageGallerySaverPlus.saveImage(
      Uint8List.fromList(response.data),
      quality: 60,
-      name: "hello",
+      name: "flutter_common_${DateTime.now().millisecondsSinceEpoch}",
      isReturnImagePathOfIOS: true,
    );
-    print('=result ============ $result');
    return result;
  }

@@ -127,7 +131,6 @@ class DownLoadImageTool {
        EasyLoading.dismiss();
        return null;
      }
-
    } catch (e) {
      EasyLoading.dismiss();
      // debugPrint('Error fetching image: $e');
--- a/lib/upload_image/look_images_widget.dart
+++ b/lib/upload_image/look_images_widget.dart
@@ -3,7 +3,9 @@ import 'dart:io';
 import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_common/upload_image/down_load_image_tool.dart';
 import 'package:flutter_common/upload_image/ossUtil.dart';
+import 'package:flutter_common/utils/toast_utils.dart';
 import 'package:get/get.dart';
 import 'package:image_editor_plus/image_editor_plus.dart';
 import 'package:path_provider/path_provider.dart';
@@ -14,6 +16,7 @@ class LookImagesTool {
    required List<String> listData,
    int? currentPage,
    void Function(String)? onCallBack,
+    void Function(String, int)? onEditCallBack,
    String? oSSAccessKeyId,
    Function? callBack,
    bool? isShowEdit,
@@ -31,6 +34,7 @@ class LookImagesTool {
              listData: listData,
              currentPage: currentPage,
              onCallBack: onCallBack,
+              onEditCallBack: onEditCallBack,
              oSSAccessKeyId: oSSAccessKeyId,
              policy: policy,
              callback: callback,
@@ -52,6 +56,7 @@ class LookImagesWidget extends StatefulWidget {
  final String? ossDirectory;
  final String? ossHost;
  final void Function(String)? onCallBack;
+  final void Function(String, int)? onEditCallBack;
  final bool? isShowEdit;

  const LookImagesWidget({
@@ -65,6 +70,7 @@ class LookImagesWidget extends StatefulWidget {
    this.ossDirectory,
    this.ossHost,
    this.onCallBack,
+    this.onEditCallBack,
    this.isShowEdit,
  });

@@ -73,7 +79,7 @@ class LookImagesWidget extends StatefulWidget {
 }

 class _LookImagesWidgetState extends State<LookImagesWidget> {
-  List listData = [];
+  List<String> listData = [];
  late int currentPage;
  late int initialPage = 0;

@@ -87,9 +93,11 @@ class _LookImagesWidgetState extends State<LookImagesWidget> {
        options: Options(responseType: ResponseType.bytes),
      );
      // 响应成功且数据非空时，直接转为 Uint8List
-      return response.statusCode == 200 && response.data != null ? Uint8List.fromList(response.data!) : null;
+      return response.statusCode == 200 && response.data != null
+          ? Uint8List.fromList(response.data!)
+          : null;
    } catch (e) {
-      print('图片转换失败：$e'); // 捕获网络错误、URL 非法等异常
+      debugPrint('图片转换失败：$e'); // 捕获网络错误、URL 非法等异常
      return null;
    }
  }
@@ -143,11 +151,16 @@ class _LookImagesWidgetState extends State<LookImagesWidget> {
    if (uint8List.length < 4) return "bin"; // 无法识别时返回二进制后缀

    // PNG 头：89 50 4E 47
-    if (uint8List[0] == 0x89 && uint8List[1] == 0x50 && uint8List[2] == 0x4E && uint8List[3] == 0x47) {
+    if (uint8List[0] == 0x89 &&
+        uint8List[1] == 0x50 &&
+        uint8List[2] == 0x4E &&
+        uint8List[3] == 0x47) {
      return "png";
    }
    // JPG 头：FF D8 FF
-    else if (uint8List[0] == 0xFF && uint8List[1] == 0xD8 && uint8List[2] == 0xFF) {
+    else if (uint8List[0] == 0xFF &&
+        uint8List[1] == 0xD8 &&
+        uint8List[2] == 0xFF) {
      return "jpg";
    }
    // MP4 头：00 00 00 18 66 74 79 70
@@ -169,7 +182,8 @@ class _LookImagesWidgetState extends State<LookImagesWidget> {
  }

  /// Uint8List 转临时 File 并且上传到oss并返回访问路径
-  Future<String?> uint8ListToTempFile(Uint8List uint8List, {String fileName = "temp_file"}) async {
+  Future<String?> uint8ListToTempFile(Uint8List uint8List,
+      {String fileName = "temp_file"}) async {
    if (uint8List.isEmpty) return null;
    try {
      // 1. 获取临时存储目录（跨平台兼容）
@@ -178,7 +192,8 @@ class _LookImagesWidgetState extends State<LookImagesWidget> {
      String tempPath = tempDir.path;

      // 2. 拼接文件路径（可自定义后缀，如 .png、.mp4 等）
-      File tempFile = File("$tempPath/$fileName.${getExtension(uint8List)}"); // 自动识别后缀（可选）
+      File tempFile =
+          File("$tempPath/$fileName.${getExtension(uint8List)}"); // 自动识别后缀（可选）

      // 3. 将 Uint8List 写入文件
      await tempFile.writeAsBytes(uint8List);
@@ -198,14 +213,29 @@ class _LookImagesWidgetState extends State<LookImagesWidget> {
      // print("上传后的访问路径：$imageUrl");
      return imageUrl;
    } catch (e) {
-      print("转换临时文件失败：$e");
+      debugPrint("转换临时文件失败：$e");
      return null;
    }
  }

+  Future<void> _saveCurrentImage() async {
+    if (listData.isEmpty) {
+      ToastUtils.showToast(msg: '暂无可保存的图片');
+      return;
+    }
+
+    final result = await DownLoadImageTool.savePhoto(
+      imageUrl: listData[currentPage],
+    );
+
+    if (result != null) {
+      ToastUtils.showToast(msg: '已保存到相册');
+    }
+  }
+
  @override
  void initState() {
-    listData = widget.listData;
+    listData = List<String>.from(widget.listData);
    if (widget.currentPage == null) {
      initialPage = 0;
      currentPage = 0;
@@ -220,40 +250,63 @@ class _LookImagesWidgetState extends State<LookImagesWidget> {
    return Scaffold(
      body: Stack(
        children: [
-          PhotoViewGallery.builder(
-            itemCount: listData.length,
-            pageController: PageController(initialPage: currentPage),
-            onPageChanged: (index) {
-              setState(() {
-                currentPage = index;
-              });
-            },
-            builder: (_, index) {
-              return PhotoViewGalleryPageOptions(
-                imageProvider: NetworkImage(
-                  listData[index],
-                ),
-              );
-            },
+          GestureDetector(
+            behavior: HitTestBehavior.translucent,
+            onLongPress: _saveCurrentImage,
+            child: PhotoViewGallery.builder(
+              itemCount: listData.length,
+              pageController: PageController(initialPage: currentPage),
+              onPageChanged: (index) {
+                setState(() {
+                  currentPage = index;
+                });
+              },
+              builder: (_, index) {
+                return PhotoViewGalleryPageOptions(
+                  imageProvider: NetworkImage(
+                    listData[index],
+                  ),
+                );
+              },
+            ),
          ),
          Positioned(
-              left: 15,
-              top: 50,
-              child: GestureDetector(onTap: () => Get.back(), child: Icon(Icons.arrow_back_ios, color: Colors.white))),
+            left: 15,
+            top: 50,
+            child: GestureDetector(
+              onTap: () => Get.back(),
+              child: const Icon(Icons.arrow_back_ios, color: Colors.white),
+            ),
+          ),
          Positioned(
-              right: 15,
-              top: 50,
-              child: GestureDetector(
-                  onTap: () async {
-                    Uint8List? imageFile = await editImage(url: listData[currentPage]);
-                    String? url = await uint8ListToTempFile(imageFile ?? Uint8List(0));
-                    if(widget.onCallBack != null){
-                      widget.onCallBack!(url??'');
-                    }
-                  },
-                  child: Visibility(
-                      visible: widget.isShowEdit??false,
-                      child: Icon(Icons.edit, color: Colors.white)))),
+            right: 15,
+            top: 50,
+            child: GestureDetector(
+              onTap: () async {
+                Uint8List? imageFile =
+                    await editImage(url: listData[currentPage]);
+                if (imageFile == null || imageFile.isEmpty) {
+                  return;
+                }
+
+                String? url = await uint8ListToTempFile(imageFile);
+                if (url == null || url.isEmpty) {
+                  ToastUtils.showToast(msg: '图片上传失败');
+                  return;
+                }
+
+                setState(() {
+                  listData[currentPage] = url;
+                });
+                widget.onEditCallBack?.call(url, currentPage);
+                widget.onCallBack?.call(url);
+              },
+              child: Visibility(
+                visible: widget.isShowEdit ?? false,
+                child: const Icon(Icons.edit, color: Colors.white),
+              ),
+            ),
+          ),
          //图片张数指示器
          Positioned(
            left: 0,