需要有关ALAssetsLibraryAccessGloballyDeniedError的帮助

Question

  

ALAssetsLibrary Class Reference

     

特殊注意事项：此方法将失败并出现错误   如果用户尚未启用，则为ALAssetsLibraryAccessGloballyDeniedError   位置服务（在设置＆gt;常规中）。

1. 设置＆gt;中的位置服务在哪里？将军？
2. 我在设置＆gt;中重置了位置和隐私以及停用的位置服务。隐私＆gt;位置服务，这是我仍然不给我ALAssetsLibraryAccessGloballyDeniedError错误的代码。

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-(void)requestAccessForAssetsLibrary {
    ALAssetsLibrary *aLib = [[ALAssetsLibrary alloc]init];
    void(^assetsGroupEnumerationBlock)(ALAssetsGroup*, BOOL*) = ^(ALAssetsGroup *groups, BOOL *stop) {
        *stop = YES;
        NSDictionary *alAuthDict = @{@"alAssetsAuthStatusDictKey" : [NSString stringWithFormat:@"%d",[self getALAssetAuthorizationStatus]]};
        [[NSNotificationCenter defaultCenter]postNotificationName:@"alAssetsStatusNotificationName" object:nil userInfo:alAuthDict];
    };
    void(^failureBLock)(NSError*) = ^(NSError *error) {
        NSDictionary *alAuthDict = @{@"alAssetsAuthStatusDictKey" : [NSString stringWithFormat:@"%d",[self getALAssetAuthorizationStatus]]};
        [[NSNotificationCenter defaultCenter]postNotificationName:@"alAssetsStatusNotificationName" object:nil userInfo:alAuthDict];
    };
    [aLib enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:assetsGroupEnumerationBlock failureBlock:failureBLock];
}

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