UIButton 自动调整 Button 字体大小 Swift [英] UIButton auto-adjust Button font size Swift

问题描述

我试着做一些测验，但我的回答按钮有问题.简单的事实:文本太长，我尝试使用不同的方法为单元格自动调整它.我现在的状态:

I try to make out some quiz and have a problem with my answer buttons. Simple fact: The text is too long and I try to auto-adjust it for cells using different methods. My current status:

        for btn in btnArr{
        btn.titleLabel!.minimumScaleFactor = 0.3
        btn.titleLabel!.numberOfLines = 0
        btn.titleLabel!.adjustsFontSizeToFitWidth = true
        btn.titleLabel?.baselineAdjustment = UIBaselineAdjustment.AlignCenters
        //btn.contentEdgeInsets = UIEdgeInsets(top: 3.0,left: 3.0,bottom: 3.0,right: 3.0)
    }

我希望有人给我另一种选择来完成这项工作:)

I hope somebody has another option for me to make that work :)

问候，帕特里克

 self.view.addConstraint(NSLayoutConstraint(item: btn.titleLabel!, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: btn, attribute:NSLayoutAttribute.Height, multiplier: 0.99, constant: 0))  

推荐答案

通过自动布局，您可以设置按钮之间的间距，以及最大和最小尺寸.在所有标签的代码中使用:

With auto layout you can set the space between buttons, and the max and min size. In code for all labels use:

self.button.titleLabel.numberOfLines = 0;
self.button.titleLabel.adjustsFontSizeToFitWidth = YES;

有了这个，所有标签都会调整文本的大小.

With this all labels adjust the text will size.

要将按钮调整为 titleLabel，请使用 titleLabel 的自动布局约束.例如:

For adjust button to titleLabel use auto layout constraint for titleLabel. For examples:

  [self.view addConstraint:[NSLayoutConstraint constraintWithItem:self.button.titleLabel
                                                          attribute:NSLayoutAttributeHeight
                                                          relatedBy:NSLayoutRelationEqual
                                                             toItem:self.view
                                                          attribute:NSLayoutAttributeHeight
                                                         multiplier:0.5
                                                           constant:0]];

此约束将 titleLabel 的高度定义为 self.view 高度的 50%.现在您可以根据需要调整约束.

This constraint define the height of titleLabel to 50% of self.view height. Now you can adapte the constraint for that you need.

这在你的代码中起作用吗?

This work in you code?

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