問題描述

我有一個 UIViewController 子類作為情節提要中的場景，其中包含一個包含各種子視圖的 UIScrollView.其中一個子視圖是一個 UIButton ，它進入另一個場景 UIViewController 子類.當我從視圖返回時(將 UIViewController 從導航控制器堆棧中彈出)，我發現滾動視圖的原點發生了某種變化，盡管 contentsize 和 contentoffset 看起來是正確的.

I have a UIViewController subclass as a scene in the storyboard that contains a UIScrollView containing various subviews. One of the subviews is a UIButton which segues into another scene UIViewController subclass. When I come back from the view (pop the UIViewController off the navigation controller stack), I find that the scroll view's origin has somehow changed, although the contentsize and contentoffset seem correct.

另外有趣的是，該應用程序有一個標簽欄，當我離開并返回該視圖時，滾動視圖被正確設置為偏移量為 (0, 0).

What's also interesting is that the app has a tab bar, and when I tab away and back to that view, the scroll view is set back correctly with offset at (0, 0).

這個過程基本上不涉及任何代碼，因為它幾乎都在情節提要中.由于我對使用情節提要相當陌生，因此我認為我做錯了，盡管我不知道是什么.關于那可能是什么的任何想法?也許是規模問題或限制?

There is basically no code involved in this process, as it's pretty much all in the storyboard. As I am fairly new to using the storyboard, I figure I'm doing something wrong, although I don't know what. Any ideas as to what that may be? Perhaps sizing issues or constraints?

推薦答案

其實我把那行代碼放在viewDidDisappear中，為了讓view重新出現時記住偏移量，我加了這個前一行

Actually, I put that line of code in viewDidDisappear, and so that it remembers the offset when the view reappears, I added this line before it

 self.contentOffset = self.scrollView.contentOffset;

還有

 - (void)viewDidLayoutSubviews { 
       self.scrollView.contentOffset = self.contentOffset; 
 }

這篇關于彈回 UIViewController 后 UIScrollView 的原點發生變化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！