- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 200, 110, 200)];
imageView.contentMode = UIViewContentModeScaleAspectFit;
[imageView setImage:[UIImage imageNamed:@"xxx.bundle/1.jpg"]];
imageView.userInteractionEnabled = YES;
[self.view addSubview:imageView];
UITapGestureRecognizer *singleTapGestureRecognizer = [[UITapGestureRecognizeralloc]initWithTarget:self action:@selector(singleTap:)];
[singleTapGestureRecognizer setNumberOfTapsRequired:1];
[imageView addGestureRecognizer:singleTapGestureRecognizer];
UITapGestureRecognizer *doubleTapGestureRecognizer = [[UITapGestureRecognizeralloc]initWithTarget:self action:@selector(doubleTap:)];
[doubleTapGestureRecognizer setNumberOfTapsRequired:2];
[imageView addGestureRecognizer:doubleTapGestureRecognizer];
//这行很关键，意思是只有当没有检测到doubleTapGestureRecognizer 或者 检测doubleTapGestureRecognizer失败，singleTapGestureRecognizer才有效
[singleTapGestureRecognizer requireGestureRecognizerToFail:doubleTapGestureRecognizer];
}
- (void)singleTap:(UIGestureRecognizer*)gestureRecognizer
{
NSLog(@"-----singleTap-----");
[self.view setBackgroundColor:[UIColor redColor]];
}
- (void)doubleTap:(UIGestureRecognizer*)gestureRecognizer
{
[self.view setBackgroundColor:[UIColor blueColor]];
NSLog(@"-----doubleTap-----");
}