如何在状态中设置UIButton背景颜色：UIControlState.Highlighted在Swift中 [英] How do I set UIButton background color forState: UIControlState.Highlighted in Swift

问题描述

我可以设置按钮的背景颜色，但我无法弄清楚如何设置 UIControlState.Highlighted 的背景颜色。它甚至可能吗？或者我需要沿着 setBackgroundImage 路径？

I can set the background color for a button but I can't work out how to set the background color for UIControlState.Highlighted. Is it even possible? or do I need to go down the setBackgroundImage path?

推荐答案

如果任何人都会停下来，另一种方式可能更容易，如果它是你需要不止一次...我为UIButton写了一个简短的扩展，它的工作正常：

If anyone stops by, another way to go maybe more easily if it is something you need more than once... I wrote a short extension for UIButton, it works just fine:

extension UIButton {
func setBackgroundColor(color: UIColor, forState: UIControlState) {
    UIGraphicsBeginImageContext(CGSize(width: 1, height: 1))
    CGContextSetFillColorWithColor(UIGraphicsGetCurrentContext(), color.CGColor)
    CGContextFillRect(UIGraphicsGetCurrentContext(), CGRect(x: 0, y: 0, width: 1, height: 1))
    let colorImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    self.setBackgroundImage(colorImage, forState: forState)
}}

你使用它就像 setBackgroundImage ：

yourButton.setBackgroundColor(UIColor.whiteColor(), forState: UIControlState.Highlighted)

这篇关于如何在状态中设置UIButton背景颜色：UIControlState.Highlighted在Swift中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！