iphone - 在UISwipeGesture后检测手指何时抬起[Recognizer]

我已经设置了UISwipeGestureRecognizer:

UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:delegate action:@selector(handleSwipeGesture:)];
swipe.direction = UISwipeGestureRecognizerDirectionUp;
[self addGestureRecognizer:swipe];
[swipe release];

滑动可使玩家向滑动方向移动。但是，我需要播放器继续移动，直到将进行滑动的手指从屏幕上抬起为止。我尝试使用touchesEnded:方法，但它要求首先进行非滑动触摸。如何获得做出滑动手势的触摸？我如何检测该触摸何时脱离屏幕？

最佳答案

我知道您已经对这个问题的答案感到满意，但是我想我建议您使用UIPanGestureRecognizer而不是滑动手势。

使用摇动手势识别器，该消息会重复发送到选择器，直到用户停止拖动手指为止，此时，选择器会再调用一次，传递gesture.state的UIGestureRecognizerStateEnded。例子:

- (void)panGesture:(UIPanGestureRecognizer *)gesture {
    if (gesture.state == UIGestureRecognizerStateEnded) {
        CGPoint translation = [gesture translationInView:self.view];
        //This contains the total translation of the touch from when it
        //first recognized the gesture until now.
        //
        //e.g (5, -100) would mean the touch dragged to the right 5 points,
        //and up 100 points.
    }
}

关于iphone - 在UISwipeGesture后检测手指何时抬起[Recognizer]，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/3427280/