水平ScrollView有n个按钮：

如何在顶部创建一个水平滚动视图，就像一个有很多按钮的滚动菜单（例如：20个按钮）？ 请帮忙 ！

我使用以下代码：

CGRect buttonFrame = CGRectMake(0.0f, 0.0f, scrollView.frame.size.width, scrollView.frame.size.height); for (NSString *text in wordsArray) { UIButton *button = [[UIButton alloc]initWithFrame:buttonFrame]; button.text = text; [scrollView addSubview:button]; buttonFrame.origin.x +=buttonFrame.size.width; } CGSize contentSize = scrollView.frame.size; contentSize.width = buttonFrame.origin.x; scrollView.contentSize = contentSize; 

但没有得到我想要的东西。

Answer 1

我试图解决这个问题，可能会解决你的问题

 NSMutableArray *wordsArray = [NSMutableArray arrayWithObjects:@"AAA", @"BBB", @"CCCC", @"dd", @"eeeee", @"ffff", @"g", @"hhh", @"iiiiiii", @"jjjj", @"kkkkk", @"lllll", nil]; CGFloat btnFrameX = 10.0; CGFloat Width = self.scrollview.frame.size.width; CGFloat Height = self.scrollview.frame.size.height; UIButton *button; for (NSString *text in wordsArray) { button = [UIButton buttonWithType:UIButtonTypeCustom]; [button setBackgroundColor:[UIColor orangeColor]]; [button.titleLabel setFont:[UIFont systemFontOfSize:20.0f]]; [button setTitle:text forState:UIControlStateNormal]; button.frame = CGRectMake(btnFrameX, 20, Width, Height); [self.scrollview addSubview:button]; btnFrameX = btnFrameX + Width + 5; } CGSize contentSize = self.scrollview.frame.size; contentSize.width = wordsArray.count * (Width + btnFrameX); self.scrollview.contentSize = contentSize; 

截图：

快乐的编码……

Answer 2

尝试这个：

 CGFloat buttonX = 0.f; CGFloat buttonY = 0.f; CGFloat buttonWidth = scrollView.frame.size.width; CGFloat buttonHeight = scrollView.frame.size.height; for (int i = 0; i < wordsArray.count; i++) { UIButton *button = [UIButton new]; [button setTitle:wordsArray[i] forState:UIControlStateNormal]; [scrollView addSubview:button]; buttonX = i * buttonWidth; button.frame = CGRectMake(buttonX, buttonY, buttonWidth, buttonHeight); } CGSize contentSize = scrollView.frame.size; contentSize.width = wordsArray.count * buttonWidth; scrollView.contentSize = contentSize; 

Answer 3

不幸的是我的代码是在Swift中，但你会得到它的要点。 设置按钮的标题后，可以调用button.sizeToFit（）。 这样它将使用首选宽度。 确定下一个按钮的原点时，请务必使用按钮的新宽度。 这是我的Swift课程。

 import Foundation import UIKit class ButtonsView: UIView { private var scrollView: UIScrollView? @IBInspectable var wordsArray: [String] = [String]() { didSet { createButtons() } } private func createButtons() { scrollView?.removeFromSuperview() scrollView = UIScrollView(frame: CGRect(x: 0, y: 0, width: self.frame.size.width, height: self.frame.size.height)) self.addSubview(scrollView!) scrollView!.backgroundColor = UIColor.gray let padding: CGFloat = 10 var currentWidth: CGFloat = padding for text in wordsArray { let button = UIButton(frame: CGRect(x:currentWidth, y: 0.0, width: 100, height: self.frame.size.height)) button.setTitle(text, for: .normal) button.sizeToFit() let buttonWidth = button.frame.size.width currentWidth = currentWidth + buttonWidth + padding scrollView!.addSubview(button) } scrollView!.contentSize = CGSize(width:currentWidth,height:scrollView!.frame.size.height) } } 

Answer 4

您可以使用自定义collectionViewCell使用collectionView并将其属性设置如下：

 [collectionView setScrollDirection:UICollectionViewScrollDirectionHorizontal]; [collectionView setPagingEnabled:NO];