OC获取并创建自定义相册

19-02-15 08:13 字数 829 阅读 2224

- (PHAssetCollection *)createdCollection
{
    // 查询是否创建过相册
    PHFetchResult<PHAssetCollection *> *result = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];

    // 获取APP名称
    NSString *appName = [NSBundle mainBundle].infoDictionary[@"CFBundleDisplayName"];

    // 遍历相册查看是否有和当前APP同名的相册
    for (PHAssetCollection *collection in result) {
        if ([collection.localizedTitle isEqualToString:appName]) {
            return collection;
        }
    }
    // 创建自定义相册
    __block NSString *identifier = nil;
    NSError *error = nil;

    [[PHPhotoLibrary sharedPhotoLibrary] performChangesAndWait:^{
        identifier = [PHAssetCollectionChangeRequest creationRequestForAssetCollectionWithTitle:appName].placeholderForCreatedAssetCollection.localIdentifier;
    } error:&error];

    if (error) return nil;

    return [PHAssetCollection fetchAssetCollectionsWithLocalIdentifiers:@[identifier] options:nil].firstObject;
}

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