iphone - 如何取消/重置 UIGestureRecognizer

Question

如何取消或重置 UIGestureRecognizer？问题是，如果我在手势期间将 waitForSomething 设置为 NO，则下一个事件是 UIGestureRecognizerStateChanged。但第一个事件应该是 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

我明白了! :-)

也许其他人遇到了这个问题，这里是解决方案:

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

下一个事件将是 UIGestureRecognizerStateFailed，然后是 UIGestureRecognizerStateBegan。