将参数传递给UITapGestureRecognizer [英] pass parameter to UITapGestureRecognizer

问题描述

我创建了动态 UIimage 视图和 UITapGestureRecognizer 到视图中它看起来像这样

i have created dynamic UIimage view and and UITapGestureRecognizer to the view its look like this

UIImageView *image = [[UIImageView alloc ] initWithFrame:CGRectMake(x, 0, 200, 150)];
        NSString *ImageURL = [str objectForKey:@"imageLink"];
        NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:ImageURL]];
        image.image = [UIImage imageWithData:imageData];

        UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];

        singleTap.numberOfTapsRequired = 1;
        image.userInteractionEnabled = YES;

        [image addGestureRecognizer:singleTap];

        [documentory addSubview:image]; 

和我这样的行动方法

-(void)tapDetected:(UIGestureRecognizer *)recognizer{
    NSLog(@"single Tap on imageview");

}

我想将一个字符串参数传递给tapDetected方法可以任何人告诉我如何做到这一点非常感谢

i want to pass a string parameters to tapDetected method can anyone tell me how to do this thank you very much

推荐答案

您可以扩展UITapGestureRecognizer来保存更多数据：

You can extend a UITapGestureRecognizer for holding more data:

// MYTapGestureRecognizer.h

@interface MYTapGestureRecognizer : UITapGestureRecognizer

@property (nonatomic, strong) NSString *data;

@end


// MYTapGestureRecognizer.m

@implementation MYTapGestureRecognizer

@end


// =====================

....

MYTapGestureRecognizer *singleTap = [[MYTapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];

singleTap.data = @"Hello";

.....


// ====================

-(void)tapDetected:(UITapGestureRecognizer *)tapRecognizer {

MYTapGestureRecognizer *tap = (MYTapGestureRecognizer *)tapRecognizer;

NSLog(@"data : %@", tap.data);

}

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