UIImageView的触控事件

下面这段代码显示图片：

UIImageView *preArrowImage =[[UIImageView alloc]init ];
preArrowImage.image =[UIImage imageNamed:@"arrowprev.png"];
preArrowImage.frame = CGRectMake(20, 60, 10, 30);
[self.view addSubview:preArrowImage];

想要对preArrowImage 的触控事件进行一些操作，怎么实现？

给preArrowImage添加tap 手势

UITapGestureRecognizer *recognizer=[[UITapGestureRecognizer alloc]
                                      initWithTarget:self action:@selector(tapHandler:)];
        [preArrowImage addGestureRecognizer:recognizer];


-(void)tapHandler:(UITapGestureRecognizer *)recognizer {
     //...to do your logic
}

在图片添加UITapGesture，然后启用UserInteraction

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self 
action:@selector(singleTapGestureCaptured:)];
[preArrowImage addGestureRecognizer:singleTap];
[preArrowImage setMultipleTouchEnabled:YES];
[preArrowImage setUserInteractionEnabled:YES];