UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapAction:)];
    [self.view  addGestureRecognizer:tap];
//轻拍次数
tap.numberOfTapsRequired = 1;
//需要几个手指
tap.numberOfTouchesRequired = 1;

- (void)tapAction:(UITapGestureRecognizer *)tap
{
    //得到 tag 值
    NSInteger number = tap.view.tag;
    NSString *number1 = [NSString stringWithFormat:@"%ld", number];
}

//向右滑动 取消模态
    UISwipeGestureRecognizer *swipeGestureRecognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    [swipeGestureRecognizer setDirection:UISwipeGestureRecognizerDirectionRight];
    [self.view addGestureRecognizer:swipeGestureRecognizer];

//右滑手势
-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)aaa
{
//如果是右滑
    if (aaa.direction == UISwipeGestureRecognizerDirectionRight) {
       
        [self.navigationController popViewControllerAnimated:YES];
    }
}


// 创建长按手势
    UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressGesture:)];
    // 触发长按的时间
    longPressGesture.minimumPressDuration = 0.5;
    [cell addGestureRecognizer:longPressGesture];
-(void)longPressGesture:(UILongPressGestureRecognizer *)longPressGesture
{
    if (longPressGesture.state == UIGestureRecognizerStateBegan) {
        NSLog(@"长按手势开启");
        longPressGesture.view .backgroundColor = [UIColor redColor];
    }
    if (longPressGesture.state == UIGestureRecognizerStateEnded) {
        NSLog(@"长按手势结束");
        longPressGesture.view .backgroundColor = [UIColor yellowColor];
    }else {
        
        NSLog(@"================");
    }
}


// 创建拖拽手势
    UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGestureAction:)];
    [self.button addGestureRecognizer:panGesture];
//拖拽手势
-(void)panGestureAction:(UIPanGestureRecognizer *)panGesture
{
    //frame写法
    CGPoint newCenter = CGPointMake([panGesture translationInView:panGesture.view].x + self.button.center.x, [panGesture translationInView:panGesture.view].y + self.button.center.y);
    self.button.center = newCenter;
    [panGesture setTranslation:CGPointZero inView:panGesture.view];

    //masonry的初始化
    [self.button mas_makeConstraints:^(MASConstraintMaker *make) {
        make.center.mas_equalTo(CGPointMake(0, 0)).priorityLow();
        make.size.mas_equalTo(CGSizeMake(100, 100));
        make.left.greaterThanOrEqualTo(self.view);
        make.top.greaterThanOrEqualTo(self.view).offset(0);
        make.bottom.right.lessThanOrEqualTo(self.view);
    }];
    //masonry写法
    UIView *button = panGesture.view;
    CGPoint newCenter = CGPointMake([panGesture translationInView:panGesture.view].x + button.center.x - [UIScreen mainScreen].bounds.size.width / 2, [panGesture translationInView:panGesture.view].y + button.center.y - [UIScreen mainScreen].bounds.size.height / 2);
    [button mas_updateConstraints:^(MASConstraintMaker *make) {
        make.center.mas_equalTo(newCenter).priorityLow();
    }];
    [panGesture setTranslation:CGPointZero inView:panGesture.view];
}
locationInView:获取到的是手指点击屏幕实时的坐标点；
translationInView：获取到的是手指移动后，在相对坐标中的偏移量