我想在两行文本的左边放置一个图标,这样在图像和文本开始之间有大约2-3像素的空间。控件本身水平居中对齐(通过接口生成器设置)

这个按钮应该是这样的:

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我试图配置这与contenttedgeinset, imageEdgeInsets和titleEdgeInsets无效。我知道,负值会使边缘扩大,而正值会使边缘缩小,使边缘更接近中心。

我试着:

[button setTitleEdgeInsets:UIEdgeInsetsMake(0, -image.size.width, 0, 0)];
[button setImageEdgeInsets:UIEdgeInsetsMake(0, button.titleLabel.bounds.size.width, 0, 0)];

但这并没有正确显示它。我一直在调整这些值,但从-5到-10的左插入值似乎不会以预期的方式移动它。-10将文本一直向左移动,所以我期望-5将它从左侧移动一半,但事实并非如此。

嵌套背后的逻辑是什么?我不熟悉图像放置和相关术语。

我用这个SO问题作为参考,但我的价值观有些不对。 UIButton:如何使用imageEdgeInsets和titleEdgeInsets居中图像和文本?


当前回答

Riley Avron回答的一个小补充,以解释地区变化:

extension UIButton {
    func centerTextAndImage(spacing: CGFloat) {
        let insetAmount = spacing / 2
        let writingDirection = UIApplication.sharedApplication().userInterfaceLayoutDirection
        let factor: CGFloat = writingDirection == .LeftToRight ? 1 : -1

        self.imageEdgeInsets = UIEdgeInsets(top: 0, left: -insetAmount*factor, bottom: 0, right: insetAmount*factor)
        self.titleEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount*factor, bottom: 0, right: -insetAmount*factor)
        self.contentEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount, bottom: 0, right: insetAmount)
    }
}

其他回答

如果你想做一些类似的东西

你需要

1.为按钮设置水平和垂直对齐

Find all required values and set UIImageEdgeInsets CGSize buttonSize = button.frame.size; NSString *buttonTitle = button.titleLabel.text; CGSize titleSize = [buttonTitle sizeWithAttributes:@{ NSFontAttributeName : [UIFont camFontZonaProBoldWithSize:12.f] }]; UIImage *buttonImage = button.imageView.image; CGSize buttonImageSize = buttonImage.size; CGFloat offsetBetweenImageAndText = 10; //vertical space between image and text [button setImageEdgeInsets:UIEdgeInsetsMake((buttonSize.height - (titleSize.height + buttonImageSize.height)) / 2 - offsetBetweenImageAndText, (buttonSize.width - buttonImageSize.width) / 2, 0,0)]; [button setTitleEdgeInsets:UIEdgeInsetsMake((buttonSize.height - (titleSize.height + buttonImageSize.height)) / 2 + buttonImageSize.height + offsetBetweenImageAndText, titleSize.width + [button imageEdgeInsets].left > buttonSize.width ? -buttonImage.size.width + (buttonSize.width - titleSize.width) / 2 : (buttonSize.width - titleSize.width) / 2 - buttonImage.size.width, 0,0)];

这将在按钮上排列标题和图像。

此外,请注意更新这在每个转播


斯威夫特

import UIKit

extension UIButton {
    // MARK: - UIButton+Aligment

    func alignContentVerticallyByCenter(offset:CGFloat = 10) {
        let buttonSize = frame.size

        if let titleLabel = titleLabel,
            let imageView = imageView {

            if let buttonTitle = titleLabel.text,
                let image = imageView.image {
                let titleString:NSString = NSString(string: buttonTitle)
                let titleSize = titleString.sizeWithAttributes([
                    NSFontAttributeName : titleLabel.font
                    ])
                let buttonImageSize = image.size

                let topImageOffset = (buttonSize.height - (titleSize.height + buttonImageSize.height + offset)) / 2
                let leftImageOffset = (buttonSize.width - buttonImageSize.width) / 2
                imageEdgeInsets = UIEdgeInsetsMake(topImageOffset,
                                                   leftImageOffset,
                                                   0,0)

                let titleTopOffset = topImageOffset + offset + buttonImageSize.height
                let leftTitleOffset = (buttonSize.width - titleSize.width) / 2 - image.size.width

                titleEdgeInsets = UIEdgeInsetsMake(titleTopOffset,
                                                   leftTitleOffset,
                                                   0,0)
            }
        }
    }
}

Riley Avron回答的一个小补充,以解释地区变化:

extension UIButton {
    func centerTextAndImage(spacing: CGFloat) {
        let insetAmount = spacing / 2
        let writingDirection = UIApplication.sharedApplication().userInterfaceLayoutDirection
        let factor: CGFloat = writingDirection == .LeftToRight ? 1 : -1

        self.imageEdgeInsets = UIEdgeInsets(top: 0, left: -insetAmount*factor, bottom: 0, right: insetAmount*factor)
        self.titleEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount*factor, bottom: 0, right: -insetAmount*factor)
        self.contentEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount, bottom: 0, right: insetAmount)
    }
}

快4.倍

extension UIButton {
    func centerTextAndImage(spacing: CGFloat) {
        let insetAmount = spacing / 2
        let writingDirection = UIApplication.shared.userInterfaceLayoutDirection
        let factor: CGFloat = writingDirection == .leftToRight ? 1 : -1

        self.imageEdgeInsets = UIEdgeInsets(top: 0, left: -insetAmount*factor, bottom: 0, right: insetAmount*factor)
        self.titleEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount*factor, bottom: 0, right: -insetAmount*factor)
        self.contentEdgeInsets = UIEdgeInsets(top: 0, left: insetAmount, bottom: 0, right: insetAmount)
    }
}

用法:

button.centerTextAndImage(spacing: 10.0)

如果您不想使用按钮配置的原因不同的情况。你可以实现下面的函数。

如果您将图像设置为按钮。你可以随意使用按钮imageView。更改按钮的位置imageView。函数,实现您输入的值作为偏移从您的按钮的前导锚。

private func leftPadding(value: CGFloat, button: UIButton) {
    button.imageView?.translatesAutoresizingMaskIntoConstraints = false
    button.imageView?.leadingAnchor.constraint(equalTo: button.leadingAnchor, constant: value).isActive = true
    button.imageView?.centerYAnchor.constraint(equalTo: button.centerYAnchor).isActive = true
}

接口构建器解决方案

事情正在发生变化,现在在XCode 13.1和iOS 15+的尺寸检查器不影响嵌入,而是在属性检查器下有填充和内容嵌入属性,这带来了预期的效果

为了向后兼容,需要在尺寸检查器下做插入,就像@ravron说的那样。在IB中需要做一些组合:

让我们假设图像和标题之间的距离为8pt 添加标题左插图为8页 这将从右侧剪辑文本,所以需要平衡添加-8pt右插入标题 然后按钮的右插入也需要调整增加右插入8pt 完成了!这个按钮在iOS 14和15中看起来很棒