Question

I made a customer control, inherit from UIView and add a lot of UIButtons on the UIView. When a user touches and moves I will do some animation: let buttons move by the function touchesMoved:

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event

but but click 事件似乎具有更高的优先级。

我希望它能够像 UITableView , 滚动的东西具有更高的优先级, 然后单击按钮。

Answer 1

您需要查看 < a href=>" "http:// developmenter.apple.com/library/ios/#documentation/uikit/referation/UIPanGestureRecognizer_Class/Reference/Reference.html" rel=“nofollow” >UIPanGestureRegnizer 。

它允许您取消发送给其他处理者的事件。

提供最新资料,说明如何保护前几个点的安全。

在动作回调中,您获得初始触摸位置 recognizer. state > = = UIGesture Recognize StateBegan 。您可以将此点保存为实例变量。您还可以在不同间隔 recognizerizer. state = 获得回调。您也可以保存此信息。当您用 recognizer. state > 获得回调时, 您可以重置任何实例变量。



- (void)handler:(UIPanGestureRecognizer *)recognizer
{
    CGPoint location = [recognizer locationInView:self];
    switch (recognizer.state)
    {
        case UIGestureRecognizerStateBegan:
            self.initialLocation = location;
            self.lastLocation = location;
            break;
        case UIGestureRecognizerStateChanged:
            // Whatever work you need to do.
            // location is the current point.
            // self.lastLocation is the location from the previous call.
            // self.initialLocation is the location when the touch began.

            // NOTE: The last thing to do is set last location for the next time we re called.
            self.lastLocation = location;
            break;
    }
}


希望这有帮助。

友情链接