selector - 如何在UIGestureRecognizer initWithTarget操作中将参数传递给操作

我正在使用下面的代码

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(processTap)];

- (void) processTap
{
//do something
}

但是我需要发送数据到processTap函数。反正有这样做吗？

最佳答案

示例:

UIImageView *myPhoto = [[UIImageView alloc] initWithImage: [UIImage imageNamed:@"tab-me-plese.png"]];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(processTap:)];

[myPhoto setTag:1]; //set tag value
[myPhoto addGestureRecognizer:tap];
[myPhoto setUserInteractionEnabled:YES];

- (void)processTap:(UIGestureRecognizer *)sender
{
    NSLog(@"tabbed!!");
    NSLog(@"%d", sender.view.tag);
}