如何取消/重置UIGestureRecognizer

Question

我该如何取消或重置UIGestureRecognizer？问题是,如果我设置waitForSomething到NO手势时,下一个事件是UIGestureRecognizerStateChanged.但第一件事应该是UIGestureRecognizerStateBegan.

我的代码:

- (void) panned:(UIPanGestureRecognizer *) recognizer {
    if (waitForSomething) {
        // cancel or reset the recognizer!
        // because the next event should be UIGestureRecognizerStateBegan and not UIGestureRecognizerStateChanged
        return;
    }

    switch (recognizer.state) {
        case UIGestureRecognizerStateBegan:
            // important initialisation code
            break;

        case UIGestureRecognizerStateChanged:
            // do something
            break;
    }
}

谢谢你的帮助!

Answer 1

我知道了!:-)

也许其他人在这个问题上运行,这是解决方案:

if (waitForSomething) {
    recognizer.enabled = NO;
    recognizer.enabled = YES;
    return;
}

接下来的事件将被UIGestureRecognizerStateFailed后面UIGestureRecognizerStateBegan.