IOS 中UIImageView响应点击事件

UIImageView *imgView =[[UIImageView alloc] initWithFrame:CGRectMake(0, 0,320,100)];   imgView.backgroundColor = [UIColor redColor];//因为没有设置image属性，为了显示出图片覆盖区域   imgView.userInteractionEnabled=YES;   UITapGestureRecognizer *singleTap =[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(onClickImage)];   [imgView addGestureRecognizer:singleTap];   [singleTap release];    

-(void)onClickImage{      NSLog(@"图片被点击!"); }