如何在没有UImagePickerController的情况下以编程方式在iphone中访问已保存图像的图像？
我知道如何让用户从UIImagePickerController中选择一个图像，但我不希望这样。 我只想在手机中存储NSArray图像，但我不想让用户参与（选择一个然后拥有该图像……），而是我创建了自己的自定义图像选择器控制器并且想要有源作为gallary。
您可以使用AVFoundation和AssetsLibrary框架轻松完成此操作。 以下是访问所有照片的代码：
-(void)addPhoto:(ALAssetRepresentation *)asset { //NSLog(@"Adding photo!"); [photos addObject:asset]; } -(void)loadPhotos { photos = [[NSMutableArray alloc] init]; library = [[ALAssetsLibrary alloc] init]; // Enumerate just the photos and videos group by using ALAssetsGroupSavedPhotos. if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { [library enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos usingBlock:^(ALAssetsGroup *group, BOOL *stop) { // Within the group enumeration block, filter if necessary [group setAssetsFilter:[ALAssetsFilter allPhotos]]; [group enumerateAssetsUsingBlock:^(ALAsset *alAsset, NSUInteger index, BOOL *innerStop) { // The end of the enumeration is signaled by asset == nil. if (alAsset) { ALAssetRepresentation *representation = [alAsset defaultRepresentation]; [self addPhoto:representation]; } else { NSLog(@"Done! Count = %d", photos.count); //Do something awesome } }]; } failureBlock: ^(NSError *error) { // Typically you should handle an error more gracefully than this. NSLog(@"No groups"); }]; } }