問題描述

我有一個帶有幾個子視圖的 UIScrollView 等等.我也是scrollView的delegate，并實現了- (void)scrollViewDidScroll:(UIScrollView *)scrollView.在我的卷軸下面有另一個視圖.

I have an UIScrollView with a few subviews and so on. I am also the scrollView's delegate and have implemented the - (void)scrollViewDidScroll:(UIScrollView *)scrollView. Underneath my scroll there is another view.

如果滾動視圖的 contentOffset 在 x 軸上低于 50px，我想顯示該視圖，重置"滾動視圖的 contentOffset 并取消當前的滾動視圖手勢，以便用戶不會在新視圖出現時操作其內容.

I want to show that view if the scrollView's contentOffset goes under 50px on x axis, "reset" scrollView's contentOffset and cancel the current scrollView gesture so that the user wont manipulate its content when the new view appears.

我已經實現了這樣的方法:

I have implemented the method like so:

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    if (scrollView.contentOffset.x < -50)
    {
        scrollView.contentOffset = CGPointZero;
        [self showBackView];
        //here I want to cancel the current touch on the scrollview since it keeps scrolling if I drag my finger
    }
}

我曾嘗試將 userInteractionEnabled 屬性設置為 NO 但只有在觸摸結束后才會生效.而且我嘗試了許多其他屬性，但似乎都沒有.

I have tried to set the userInteractionEnabled property to NO but it takes effect only after the touch has ended. And I have tried a bunch of other properties but none seems to work.

我該如何解決這個問題?

How can I fix this?

推薦答案

嘗試禁用滾動視圖的 panGestureRecognizer(然后重新啟用它).這將取消識別器的當前會話:

Try disabling the panGestureRecognizer for the scroll view (and then reenabling it). This will cancel the current session of the recogniser:

self.scrollView.panGestureRecognizer.enabled = NO;
self.scrollView.panGestureRecognizer.enabled = YES;

斯威夫特

self.scrollView.panGestureRecognizer.isEnabled = false
self.scrollView.panGestureRecognizer.isEnabled = true

這篇關于取消當前 UIScrollView 觸摸的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！