問題描述

好的，這里的關鍵是我根本沒有使用 IB，因為我正在使用的視圖是通過編程方式創(chuàng)建的.UIView 覆蓋了屏幕的下半部分，上面有一堆按鈕.但是，我想在 UIView 中添加更多按鈕，而不使其變得更大.為此，我想在視圖中創(chuàng)建一個 UIScrollView，這將允許我在屏幕外添加更多按鈕，以便用戶可以滾動到它們.我認為這就是它的工作原理.

Alright, so the key here is I'm not using IB at all, because the View I'm working with is created programmatically. The UIView covers the lower half the screen, and has a bunch of buttons on it. However, I want to add more buttons to the UIView, without making it any larger. To do so, I want to make a UIScrollView inside the view, which will allow me to add more buttons off screen so the user can scroll to them. I think that's how it works.

self.manaView = [[[UIView alloc] initWithFrame:frame] autorelease];
self.manaView.backgroundColor = [UIColor purpleColor];

UIScrollView *scroll = [UIScrollView alloc];
scroll.contentSize = CGSizeMake(320, 400);
scroll.showsHorizontalScrollIndicator = YES;
[self.manaView addSubview:scroll];

代碼的第一部分啟動了我的 UIView，效果很好，但我不知道如何以編程方式制作 UIScrollView 并將其添加到視圖中，然后向其中添加按鈕.

The first part of the code iniates my UIView, which works great, but I can't figure out how to make the UIScrollView programmatically and add it to the view, and then add the buttons to it.

UIButton *ret2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
ret2.tag = 102;
ret2.frame = CGRectMake(255, 5, 60, 50);
[ret2 setTitle:@"Return" forState:UIControlStateNormal];
[ret2 addTarget:self action:@selector(flipAction:) forControlEvents:UIControlEventTouchUpInside];
[scroll addSubview:ret2];

當我這樣做時，按鈕從我的屏幕上消失了.那么我該如何正確地做到這一點呢?感謝您的幫助！

When I did that, the button simply disappeared off my screen. So How do I do this correctly? Thank you for your help!

推薦答案

代替:

UIScrollView *scroll = [UIScrollView alloc];

執(zhí)行此操作(將框架設置為您希望滾動視圖的大小):

do this (setting the frame to however big you want the scroll view to be):

UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:...];

這篇關于如何以編程方式創(chuàng)建 UIScrollView?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(wǎng)！