本文介绍了如何在状态中设置UIButton背景颜色:UIControlState.Highlighted在Swift中的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

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)

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10-27 00:22