在ALAssetsGroup崩溃中检索相册( Photos.app )的名称

Question

我在试着弄到所有专辑的名字。我就是这么做的。

[group valueForKey:ALAssetsGroupPropertyName]崩溃的方法

ALAssetsLibrary *assetsLibrary = [[ALAssetsLibrary alloc] init];
[assetsLibrary enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos | ALAssetsGroupAlbum
                             usingBlock:^(ALAssetsGroup *group, BOOL *stop) {

                                 if (nil != group)
                                 {
                                     NSLog(@"name %@",[group valueForKey:ALAssetsGroupPropertyName]);    
                                 }
                                 *stop = NO;
                             } failureBlock:^(NSError *error) {
                                 NSLog(@"error: %@", error);
                             }];

我真的不知道它为什么会崩溃，如果有人知道的话，我真的很感激你的帮助！

以下是崩溃日志：

*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<ALAssetsGroup 0x17801ff90> valueForUndefinedKey:]: this class is not key value coding-compliant for the key ALAssetsGroupPropertyName.`

Answer 1

你打错电话了。改变这一点：

NSLog(@"name %@",[group valueForKey:ALAssetsGroupPropertyName]);

至：

NSLog(@"name %@",[group valueForProperty:ALAssetsGroupPropertyName]);