将NSDictionary作为参数传递给UITapGestureRecognizer

本文介绍了将NSDictionary作为参数传递给UITapGestureRecognizer的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想将 NSArray 作为参数传递给 UITapGestureRecognizer ，并在downloadOptionPressed方法中访问它。我该怎么做？

I want to pass a NSArray as a parameter to UITapGestureRecognizer and access it in downloadOptionPressed method. How can I do this ?

NSArray

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

创建 UITapGestureRecognizer

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

downloadOptionPressed 方法

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

推荐答案

您是否有理由不能将信息存储在拥有的视图控制器中？是抽象吗？

Is there a reason you can't store the information in the owning view controller? Is it for abstraction?

您可以随时扩展UITapGestureRecognizer以携带更多数据：

You can always extend UITapGestureRecognizer to carry more data:

@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; }