iOS中的ALAsset库

它的代码在模拟器上工作，但在设备上不工作，我不能从设备上获取画廊图像

imageArray=[[NSArray alloc] init];
name=[[NSArray alloc]init];
mutableArray =[[NSMutableArray alloc]init];

// self.title = [library valueForProperty:ALAssetsGroupPropertyName];

ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];

NSMutableArray* assetURLDictionaries = [[NSMutableArray alloc] init];

library = [[ALAssetsLibrary alloc] init];

void (^assetEnumerator)( ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {

    NSLog(@"%zd",result);

    if(result != nil) {
        if([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
            [assetURLDictionaries addObject:[result valueForProperty:ALAssetPropertyURLs]];

            NSURL *url= (NSURL*) [[result defaultRepresentation]url];

            [library assetForURL:url
                     resultBlock:^(ALAsset *asset) {
                         [mutableArray addObject:[UIImage imageWithCGImage:[[asset defaultRepresentation] fullScreenImage]]];

                         if ([mutableArray count]==count ) {
                            // name=[[NSArray alloc]initWithArray:lisk];

                             imageArray=[[NSArray alloc] initWithArray:mutableArray];
                              _listImageArrayFromGallery=[[NSMutableArray alloc]init];

                             for (int i=0; i<imageArray.count; i++) {
                                 [_listImageArrayFromGallery addObject:[imageArray objectAtIndex:i]];
                             }

                             NSLog(@"ListPic%@",_listImageArrayFromGallery);

                             loadedCards = [[NSMutableArray alloc] init];
                             allCards = [[NSMutableArray alloc] init];
                             cardsLoadedIndex = 0;
                             [self loadCards];

                            // [self allPhotosCollected:imageArray];
                         }
                     }
                    failureBlock:^(NSError *error){ NSLog(@"operation was not successfull!"); } ];
        }
    }
};

NSMutableArray *assetGroups = [[NSMutableArray alloc] init];

void (^ assetGroupEnumerator) ( ALAssetsGroup *, BOOL *)= ^(ALAssetsGroup *group, BOOL *stop) {
    if(group != nil) {
        [group enumerateAssetsUsingBlock:assetEnumerator];
        [assetGroups addObject:group];
        count=[group numberOfAssets];
        //[assetGrpImage addObject:assetGroups];

        //assetGrpImage=[assetGrpImage valueForKey:@"Camera Roll"];
    }
};

assetGroups = [[NSMutableArray alloc] init];

[library enumerateGroupsWithTypes:ALAssetsGroupAll
                       usingBlock:assetGroupEnumerator
                     failureBlock:^(NSError *error) {NSLog(@"There is an error");}];

imageArray=[[NSArray alloc]init]；
name=[[NSArray alloc]init]；
mutableArray=[[NSMutableArray alloc]init]；
//self.title=[library valueForProperty:ALAssetsGroupPropertyName]；
AlaAuthorizationStatus=[ALAssetsLibrary authorizationStatus]；
NSMutableArray*assetURLDictionaries=[[NSMutableArray alloc]init]；
库=[[AlassetLibrary alloc]init]；
void（^assetEnumerator）（ALAsset*，NSUTEGER，BOOL*）=^（ALAsset*结果，NSUTEGER索引，BOOL*停止）{
NSLog（@“%zd”，结果）；
如果（结果！=零）{
if（[[result valueForProperty:ALAssetPropertyType]IseQualString:ALAssetTypePhoto]）{
[AssetUrdictionares addObject:[result valueForProperty:ALAssetPropertyURLs]]；
NSURL*url=（NSURL*）[[result defaultRepresentation]url]；
[library assetForURL:url
结果块：^（ALAsset*资产）{
[mutableArray addObject:[UIImage imageWithCGImage:[[asset defaultRepresentation]fullScreenImage]]；
if（[mutableArray count]==计数）{
//name=[[NSArray alloc]initWithArray:lisk]；
imageArray=[[NSArray alloc]initWithArray:mutableArray]；
_listImageArrayFromGallery=[[NSMutableArray alloc]init]；
对于（int i=0；i选中此答案，因为SetLibrary在iOS 9上不受欢迎，我认为它甚至不能在iOS 9上正常工作。此代码应该在iOS 7或8上工作。但是在iOS 9中，您必须使用PHPhotoLibrary.go-