ios – ALAssetsLibrary似乎返回错误的照片数量

当我使用ALAssetsLibrary获取本地照片时,它工作正常.但在我使用“照片”应用程序删除一些照片后,我的应用程序崩溃了.

崩溃信息是：

“由于未捕获的异常’NSRangeException’终止应用程序,原因：’*** – [NSOrderedSet enumerateObjectsAtIndexes：options：usingBlock：]：索引14超出边界[0 .. 9]’”.’14’

看起来本地照片的数量仍然与befoore相同.即使在我退出应用程序并重新启动它之后,它仍然会崩溃.

本地照片访问代码：

dispatch_async(dispatch_get_main_queue(),^
{
   @autoreleasepool 
   {
       ALAssetsLibraryAccessFailureBlock failureblock = ^(NSError *myerror)
       {
           NSLog(@"error occour =%@",[myerror localizedDescription]);
       };

       ALAssetsGroupEnumerationResultsBlock groupEnumerAtion = ^(ALAsset *result,NSUInteger index,BOOL *stop)
       {
           if (result!=NULL) 
           {
               if ([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) 
               {
                   [self.g_imageArray addObject:result];
               }
           }
       };

       ALAssetsLibraryGroupsEnumerationResultsBlock
       libraryGroupsEnumeration = ^(ALAssetsGrouP* group,BOOL* stop)
       {
           if (group == nil) 
           {
               return;
           }

           if (group!=nil) {
               [group enumerateAssetsUsingBlock:groupEnumerAtion];
           }
       [self updatephotoList];
       };

       self.library = [[ALAssetsLibrary alloc] init];
       [self.library enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos
                              usingBlock:libraryGroupsEnumeration 
                            failureBlock:failureblock];
   }
});

如果我用系统相机拍摄另一张照片,我的应用程序再次正常.

ALAssetsLibraryGroupsEnumerationResultsBlock
libraryGroupsEnumeration = ^(ALAssetsGrouP* group,BOOL* stop)
{
       if (group == nil) 
       {
           return;
       }
       //Force to reload photo as numberOfAssets is broken
       NSLog(@"how many picture I have in this group: %d",[group numberOfAssets]);
       [group setAssetsFilter:[ALAssetsFilter allPhotos]];//this will cause group to reload
       NSLog(@"how many picture I have in this group: %d",[group numberOfAssets]);

       if (group!=nil) {
           [group enumerateAssetsUsingBlock:groupEnumerAtion];
       }
   [self updatephotoList];
 };