使用情节提要板在WatchKit上检测所有四个方向上的滑动 [英] Detecting swipes on all four directions on WatchKit using the Storyboard

问题描述

我正在尝试检测AppleWatch在所有四个方向上的滑动.但是我不清楚如何为我插入情节提要中的WKSwipeGestureRecognizer的方向分配许多值.我尝试过:

I am trying to detect the swipes on the AppleWatch on all four directions. Yet I am not clear how to assign many values to the direction of the WKSwipeGestureRecognizer I inserted in the Storyboard. I tried with:

swiper.direction = [.right , .left ,  .up , .down]

被编译器普遍接受，不同于使用按位|，但是使用此配置，功能:

that was funnily accepted by the compiler, differently of using the bitwise |, but, using this configuration, function:

@IBAction func swipe(_ sender: Any) {
    switch swiper.direction {
    case WKSwipeGestureRecognizerDirection.right:
        print("Swiped right")
    case WKSwipeGestureRecognizerDirection.down:
        print("Swiped down")
    case WKSwipeGestureRecognizerDirection.left:
        print("Swiped left")
    case WKSwipeGestureRecognizerDirection.up:
        print("Swiped up")
    default:
        break
    }

}

很少被调用，当它是滑动时，方向始终是正确的.

is very seldom called and when it is the swiper.direction is invariably .right.

苹果在以下方面非常神秘: https://developer.apple.com/reference/watchkit/wkswipegesturerecognizer/1650828-direction通过说:

Apple is very cryptic at: https://developer.apple.com/reference/watchkit/wkswipegesturerecognizer/1650828-direction by saying:

此属性的默认值为正确.您可以指定更多一个方向来跟踪多个方向的滑动相同的手势识别器."

"The default value of this property is right. You may specify more than one direction to track swipes in multiple directions with the same gesture recognizer."

没有透露具体方法.

推荐答案

1)从右侧的实用程序"框中选择WKSwipeGestureRecognizer

1) Select WKSwipeGestureRecognizer from Utilities box on the right side

2)在属性检查器中，选中开始延迟触摸"，然后选择所需的滑动"类型

2) From the attributes inspectors, check "Delays touches began" and select "Swipe" type that you need

-

3) Ctrl +将IBAction拖动到您的viewController并实现功能

3) Ctrl + drag IBAction to your viewController and implement function

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