ios 单击和双击手势

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    

    

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

    [singleTapGestureRecognizer setNumberOfTapsRequired:1];

    [self.view addGestureRecognizer:singleTapGestureRecognizer];

    

    UITapGestureRecognizer *doubleTapGestureRecognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(doubleTap:)];

    [doubleTapGestureRecognizer setNumberOfTapsRequired:2];

    [self.view 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-----");

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end