feat(update):添加图片长按下载

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');