使用Gesture Recognizer

使用Gesture Recognizer识别就会简单许多，只需添加两个手势识别器，分别检测单击和双击事件，设置必要的属性即可。

 

- (id)init {
    if ((self = [super init])) {
    self.userInteractionEnabled = YES;
        UITapGestureRecognizer *singleTapGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleSingleTap:)];
        singleTapGesture.numberOfTapsRequired = 1;
        singleTapGesture.numberOfTouchesRequired  = 1;
        [self addGestureRecognizer:singleTapGesture];

        UITapGestureRecognizer *doubleTapGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleDoubleTap:)];
        doubleTapGesture.numberOfTapsRequired = 2;
        doubleTapGesture.numberOfTouchesRequired = 1;
        [self addGestureRecognizer:doubleTapGesture];

        [singleTapGesture requireGestureRecognizerToFail:doubleTapGesture];
    }
    return self;
}
-(void)handleSingleTap:(UIGestureRecognizer *)sender{
    CGPoint touchPoint = [sender locationInView:self];
    //...
}
-(void)handleDoubleTap:(UIGestureRecognizer *)sender{
    CGPoint touchPoint = [sender locationInView:self];
    //...
}