objective-c - UILongPressGesture to Touches Moved in subview

Question

我有一个UIViewController并添加了一个UILongPressGestureRecognizer，当被识别时，它会在顶部添加一个子视图，该子视图覆盖UIViewController并将印刷机的坐标传递给子视图，并在印刷机所在的位置添加图像。

我现在需要做的是移动用户拇指所在的子视图。我已经实现touchesMoved了，UIView但是直到您删除手势并按下并重新开始后才注册？

如何在UIView添加后立即开始 touchesBegan 而无需删除并重新开始？

谢谢-JM

Answer 1

为什么不继续使用 UILongPressGesture？

    - (IBAction)longPressGestureStateChanged:(UILongPressGestureRecognizer *)sender {
        switch (sender.state) {
            case UIGestureRecognizerStatePossible:
            case UIGestureRecognizerStateBegan: {
            /* PUT YOUR IMAGE HERE */
            break;
        }
        case UIGestureRecognizerStateChanged: {
            /* MOVE YOUR IMAGE HERE */
            self.myImageView.center = [sender locationInView:self.view /* or any of your subviews */];
            break;
        }
        case UIGestureRecognizerStateCancelled:
        case UIGestureRecognizerStateFailed:
        case UIGestureRecognizerStateEnded: {
            /* REMOVE OR PROCESS END OF THIS TOUCH GESTURE */
            break;
    }
}