objective-c - 在 UITextView 中禁用双击

Question

我想在 UITextView 中禁用双击。我已经禁用了长按：

- (void)addGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer {
    if ([gestureRecognizer isKindOfClass:[UILongPressGestureRecognizer class]]) {
        gestureRecognizer.enabled = NO;
    }
    [super addGestureRecognizer:gestureRecognizer];
    return;
}

我尝试对 UITapGestureRecognizer 做同样的事情，但它也禁止单击。

- (void)addGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer {
    if ([gestureRecognizer isKindOfClass:[UILongPressGestureRecognizer class]]) {
        gestureRecognizer.enabled = NO;
    }
    if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]]) {
        gestureRecognizer.enabled = NO;
    }
    [super addGestureRecognizer:gestureRecognizer];
    return;
}

我该怎么做才能只禁用双击？

我知道 numberOfTapsRequired 方法，但不知道如何在我的代码中准确应用它。

Answer 1

我建议您尝试一下，而不是禁用您的点击手势识别器

if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]]) {
    [(UITapGestureRecognizer *)gestureRecognizer setNumberOfTapsRequired:1];
}

这样，您应该启用单击并禁用双击。

Answer 2

numberOfTapsRequired 的默认值为 1，设置为 2。

http://developer.apple.com/library/ios/#documentation/uikit/reference/UITapGestureRecognizer_Class/Reference/Reference.html