将NSDictionary作为参数传递给UITapGestureRecognizer

Question

我想将NSArray一个参数传递给UITapGestureRecognizerdownloadOptionPressed方法并在其中访问它.我怎样才能做到这一点 ？

该 NSArray

NSArray *parameters = [NSArray arrayWithObjects:currentTrack, nil];

创造 UITapGestureRecognizer

UITapGestureRecognizer *downloadOptionPressed = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(timeFrameLabelTapped:)];
    [downloadOption addGestureRecognizer:downloadOptionPressed];

该downloadOptionPressed方法

-(void)downloadOptionPressed:(UIGestureRecognizer*)recognizer{

}

Answer 1

有没有理由不能将信息存储在拥有的视图控制器中？是抽象吗？

您始终可以扩展UITapGestureRecognizer以携带更多数据:

@interface UserDataTapGestureRecognizer : UITapGestureRecognizer
@property (nonatomic, strong) id userData;
@end

@implementation UserDataTapGestureRecognizer
@end

...

UserDataTapGestureRecognizer *downloadOptionPressed =
    [[UserDataTapGestureRecognizer alloc] initWithTarget:self
    action:@selector(timeFrameLabelTapped:)];
downloadOptionPressed.userData = parameters;

...

- (void)downloadOptionPressed:(UserDataTapGestureRecognizer *)recognizer {
    NSArray *parameters = recognizer.userData;
}