未授权不提示失败

@@ -53,8 +53,11 @@ export struct ImageDownloadComponent {
             } catch (error) {
               const err: BusinessError = error as BusinessError;
               //console.info(`Failed to save photo. Code is ${err.code}, message is ${err.message}`);
+              if (this.isGranted) {
                 promptAction.showToast({ message: '保存图片失败！' });
               }
+
+            }
           }
         })
     }
@@ -161,11 +164,12 @@ export struct ImageDownloadComponent {
    * @returns
    */
   async saveImage(buffer: ArrayBuffer | string): Promise<void> {
-    //console.info(`cj2024 saveImage buffer ${buffer}`)
+    //console.info(`cj2024 saveImage buffer ${buffer} isGranted = ${this.isGranted}`)
     if (!this.isGranted) {
       //跳转权限设置
       // const permissionUtil = new PermissionUtil();
       PermissionUtil.reqPermissionsFromUser(['ohos.permission.READ_MEDIA'], this).then((res) => {
+        //console.info(`cj2024 saveImage res ${res}`)
         this.isGranted = res;
       });
     } else {
@@ -192,7 +196,10 @@ export struct ImageDownloadComponent {
       await asset.close(fd);
       promptAction.showToast({ message: '已保存至相册！' });
     } else {
+      if (this.isGranted) {
         promptAction.showToast({ message: '保存图片失败！' });
+      }
+
       throw new Error('Failed to create asset');
     }
   }