- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {     NSURL *imageURL = [info valueForKey:UIImagePickerControllerReferenceURL];    ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset)    {        ALAssetRepresentation *representation = [myasset defaultRepresentation];        weakSelf.imageName = [representation filename];        NSLog(@"imageName : %@",weakSelf.imageName);    };    ALAssetsLibrary *assetslibrary = [[ALAssetsLibrary alloc] init];    [assetslibrary assetForURL:imageURL resultBlock:resultblock failureBlock:nil];}