問題描述

我有一個滾動視圖，里面有 20 個 UItextview.滾動視圖不起作用.我在 viewdidload 中設置了以下內容.

I have a scrollview inside which i have 20 UItextviews. The scrollview is not working. I have set the following in viewdidload.

self.MainScroll.contentSize = CGSizeMake(320, 1800);

它仍然不滾動.但是，如果我垂直彈跳，它只會彈跳.我的滾動視圖是尺寸為 320*600 的主 UIview 的子視圖.請指導如何啟用滾動！

Still it doesn't scroll. However, if i give bounce vertically, it just bounces. My scrollview is a child of the main UIview of dimension 320*600. Please guide how to enable the scroll!!

推薦答案

有兩種方法可以讓滾動工作.

There are two ways you can get the scrolling to work.

方法一(帶代碼):

1) 將 UIScrollView 固定到其父視圖的兩側，如下所述.

1) Pin UIScrollView to the sides of its parent view, as mentioned below.

2) 在 viewDidLayoutSubviews 中設置滾動視圖的內容大小:

2) Set content size of your scroll view in viewDidLayoutSubviews:

- (void)viewDidLayoutSubviews {
    self.MainScroll.contentSize = CGSizeMake(320, 1800);
}

方法 2(純 IB，無需代碼):

1) 如果使用AutoLayout，則不需要設置contentSize.您需要將 UIScrollView 固定到父視圖，如下所述:

1) Setting contentSize is not required if using AutoLayout. You need to pin your UIScrollView to the parent view as mentioned below:

2) 然后在 UIScrollView 中添加另一個 UIView 作為內容視圖并將其固定到 UIScrollView 并移動此內容視圖中的所有控件:

2) Then add another UIView inside UIScrollView to act as a content view and pin it to the UIScrollView and move all controls inside this content view:

3) 將內容視圖固定到其父滾動視圖，如下所述:

3) Pin content view to its parent scroll view as mentioned below:

4) 將 UIViewController 的模擬指標設置為自由形式(這很重要):

4) Set your UIViewController's Simulated Metrics to Freeform (this is important):

5) 將您的內容 UIView 調整到您想要的高度(顯然也很重要):

5) Size your content UIView to your desired height (obviously important too):

Apple 文章解釋 UIScrollView 和 AutoLayouts:https://developer.apple.com/library/content/technotes/tn2154/_index.html

Apple article explaining UIScrollView and AutoLayouts: https://developer.apple.com/library/content/technotes/tn2154/_index.html

這篇關于滾動視圖不起作用 IOS 7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！