Accessing Videos in library using AssetsLibrary framework iPhone?

Question

I am trying to access videos in iPhone library using AssetsLibrary Framework with the help of following code...but when I run the application the code is not working...the a

Answer 1

Double Init:

 NSMutableArray *assets = [[NSMutableArray alloc]init];
 ALAssetsLibrary *library =[[ALAssetsLibrary alloc]init];

 void (^assetEnumerator)(struct ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
 if(result != NULL) {
      NSLog(@"See Asset: %@", result);
      [assets addObject:result];

        }
};

void (^assetGroupEnumerator)(struct ALAssetsGroup *, BOOL *) =  ^(ALAssetsGroup *group, BOOL *stop) {
    if(group != nil) {NSLog(@"dont See Asset: ");
            [group enumerateAssetsUsingBlock:assetEnumerator];
    }
};

   assets = [[NSMutableArray alloc] init];
   library = [[ALAssetsLibrary alloc] init**];
   [library enumerateGroupsWithTypes:ALAssetsGroupAlbum
                       usingBlock:assetGroupEnumerator
                     failureBlock: ^(NSError *error) {
                             NSLog(@"Failure");
                         }];