Question

我试图在我的iphone中显示所有专辑标题的列表，当我按下标题时，我希望它在集合视图中显示该特定专辑的所有照片。我正在使用＆＃34; PhotosUI＆＃ 34;框架，我使用此代码获取专辑标题：

(1, datetime.date(2002, 1, 2))
(2, datetime.date(2014, 1, 15))
(3, datetime.date(2005, 10, 20))

和此代码以获取特定相册的所有照片标题：

-(void)getLibrariesList
{
    NSArray *collectionsFetchResults;
    albumNames = [[NSMutableArray alloc] init];

    PHFetchResult *smartAlbums = [PHAssetCollection       fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum
                                                                                subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
    PHFetchResult *syncedAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum
                                                                           subtype:PHAssetCollectionSubtypeAlbumSyncedAlbum options:nil];
    PHFetchResult *userCollections = [PHCollectionList fetchTopLevelUserCollectionsWithOptions:nil];

    PHFetchOptions *userAlbumsOptions = [PHFetchOptions new];
    userAlbumsOptions.predicate = [NSPredicate predicateWithFormat:@"estimatedAssetCount > 0"];



    // Add each PHFetchResult to the array
    collectionsFetchResults = @[smartAlbums, userCollections, syncedAlbums];

    for (int i = 0; i < collectionsFetchResults.count; i ++) {

        PHFetchResult *fetchResult = collectionsFetchResults[i];

        for (int x = 0; x < fetchResult.count; x ++) {

            PHCollection *collection = fetchResult[x];

            albumNames[x] = collection.localizedTitle;

        }
    }
    //update the tableview
    [self.libraryTableView reloadData];
}

对于某些专辑，它的工作，专辑如＆＃34; Instagram＆＃34;和我用手机创建的专辑，但是当我按下＆＃34;相机胶卷＆＃34;和＃34;我的照片流＆＃34;专辑它显示任何东西。

为什么会发生这种情况或是否有其他方式来获取我设备的所有照片？

Answer 1

我得到了答案。我检索所有相机胶卷照片和视频。以下是我的代码。

   PHFetchOptions *fetchOptions = [[PHFetchOptions alloc] init];
collection = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum
                                                      subtype:PHAssetCollectionSubtypeSmartAlbumUserLibrary
                                                      options:fetchOptions].firstObject;

collectionResult = [PHAsset fetchAssetsInAssetCollection:collection options:nil];
NSLog(@"Custom album images::%@",collectionResult);


[collectionResult enumerateObjectsUsingBlock:^(PHAsset *asset, NSUInteger idx, BOOL *stop)
{
    NSLog(@"Custom album::%@",asset);
    NSLog(@"Collection Result Count:%lu", (unsigned long)self.collectionResult.count);

    //add assets to an array for later use in the uicollectionviewcell
}];

PHAsetCollection用于＆＃34;相机胶卷＆＃34;和＃34;我的照片流＆＃34;是空的

1 个答案: