在TrackPad中用numberOfTouchesRequired实现二次点击

Question

我想实现二次单击iPad以显示选项。

let tapTwoRecog = UITapGestureRecognizer(target: self, action: #selector(tapTwoAsLongPress(gesture:)))
        tapTwoRecog.numberOfTouchesRequired = 2
        tapTwoRecog.numberOfTapsRequired = 1
        tapTwoRecog.allowedTouchTypes = [NSNumber(value: UITouch.TouchType.direct.rawValue), NSNumber(value: UITouch.TouchType.indirect.rawValue)]
        tableView.addGestureRecognizer(tapTwoRecog)
        tableView.isMultipleTouchEnabled = true

但它只能由屏幕上的触摸触发。使用触控板不会触发任何东西。我已经将UIApplicationSupportsIndirectInputEvents设置为YES/NO。

Answer 1

我刚刚在这个网站上找到了答案：https://pspdfkit.com/blog/2020/level-up-your-trackpad-support-using-uiinteraction/

if #available(iOS 13.4, *) {
    let tapTwoRecog = UITapGestureRecognizer(target: self, action: #selector(tapTwoAsLongPress(gesture:)))
    tapTwoRecog.allowedTouchTypes = [NSNumber(value: UITouch.TouchType.indirectPointer.rawValue)]
    tapTwoRecog.buttonMaskRequired = .secondary
    tableView.addGestureRecognizer(tapTwoRecog)
}

UIApplicationSupportsIndirectInputEvents必须为YES。