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[英]How do I get cityname, province, state, from PHAsset in iOS 8 Photos Framework?
[英]With the iOS Photos Framework how do I list all PHAssetCollections available?
使用iOS Photos Framework,如何列出所有可用的PHAssetCollections? 我想找到“Photo Roll”系列,以便我可以從該系列中檢索所有照片。 如何使用新的PhotosFramework使用iOS 8+?
如果您查看PhotoTypes,您可以看到相機膠卷不包含在PH中,您可以通過它獲取
PHFetchResult *result = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum
subtype:PHAssetCollectionSubtypeSmartAlbumUserLibrary
options:nil];
PHAssetCollection *assetCollection = result.firstObject;
NSLog(@"%@", assetCollection.localizedTitle); // Camera Roll
一般來說,這是如何獲得一切
PHFetchOptions *options = [[PHFetchOptions alloc] init];
options.wantsIncrementalChangeDetails = YES;
options.predicate = [NSPredicate predicateWithFormat:@"mediaType == %d",PHAssetMediaTypeImage];
PHFetchResult *albums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
for (PHAssetCollection *sub in albums)
{
PHFetchResult *fetchResult = [PHAsset fetchAssetsInAssetCollection:sub options:options];
}
#pragma mark - PHAssetCollection types
typedef NS_ENUM(NSInteger, PHAssetCollectionType) {
PHAssetCollectionTypeAlbum = 1,
PHAssetCollectionTypeSmartAlbum = 2,
PHAssetCollectionTypeMoment = 3,
} NS_ENUM_AVAILABLE_IOS(8_0);
typedef NS_ENUM(NSInteger, PHAssetCollectionSubtype) {
// PHAssetCollectionTypeAlbum regular subtypes
PHAssetCollectionSubtypeAlbumRegular = 2,
PHAssetCollectionSubtypeAlbumSyncedEvent = 3,
PHAssetCollectionSubtypeAlbumSyncedFaces = 4,
PHAssetCollectionSubtypeAlbumSyncedAlbum = 5,
PHAssetCollectionSubtypeAlbumImported = 6,
// PHAssetCollectionTypeAlbum shared subtypes
PHAssetCollectionSubtypeAlbumMyPhotoStream = 100,
PHAssetCollectionSubtypeAlbumCloudShared = 101,
// PHAssetCollectionTypeSmartAlbum subtypes
PHAssetCollectionSubtypeSmartAlbumGeneric = 200,
PHAssetCollectionSubtypeSmartAlbumPanoramas = 201,
PHAssetCollectionSubtypeSmartAlbumVideos = 202,
PHAssetCollectionSubtypeSmartAlbumFavorites = 203,
PHAssetCollectionSubtypeSmartAlbumTimelapses = 204,
PHAssetCollectionSubtypeSmartAlbumAllHidden = 205,
PHAssetCollectionSubtypeSmartAlbumRecentlyAdded = 206,
PHAssetCollectionSubtypeSmartAlbumBursts = 207,
PHAssetCollectionSubtypeSmartAlbumSlomoVideos = 208,
PHAssetCollectionSubtypeSmartAlbumUserLibrary = 209,
// Used for fetching, if you don't care about the exact subtype
PHAssetCollectionSubtypeAny = NSIntegerMax
} NS_ENUM_AVAILABLE_IOS(8_0);
使用下面給出的代碼段來獲取所有智能相冊和所有智能照片
// Get all Smart Albums
PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
[smartAlbums enumerateObjectsUsingBlock:^(PHAssetCollection *collection, NSUInteger idx, BOOL *stop) {
NSLog(@"album title %@", collection.localizedTitle);
}];
// Get all photos
PHFetchResult *allPhotosResult = [PHAsset fetchAssetsWithMediaType:PHAssetMediaTypeImage options:nil];
// Get assets from the PHFetchResult object
[allPhotosResult enumerateObjectsUsingBlock:^(PHAsset *asset, NSUInteger idx, BOOL *stop) {
NSLog(@"asset %@", asset);
CGSize size=CGSizeMake(90, 90);
PHImageManager *imageManager;
[imageManager requestImageForAsset:asset targetSize:size contentMode:PHImageContentModeAspectFit options:nil resultHandler:^(UIImage *result, NSDictionary *info) {
yourImageView.image=result;
}];
}];
供參考: https : //developer.apple.com/library/prerelease/ios/samplecode/UsingPhotosFramework/Introduction/Intro.html
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