在Swift 5中

对于那些不想使用彩色背景击败所选状态的人

简单地说，你可以通过使用#Selector & if语句轻松地为每个状态单独更改UIButton颜色来解决这个问题

例如:

    override func viewDidLoad() {
    super.viewDidLoad()
    self.myButtonOutlet.backgroundColor = UIColor.white  //to reset the button color to its original color ( optionally )
}

@IBOutlet weak var myButtonOutlet: UIButton!{
    didSet{  // Button selector and image here
        self.myButtonOutlet.setImage(UIImage(systemName: ""), for: UIControl.State.normal)

        self.myButtonOutlet.setImage(UIImage(systemName: "checkmark"), for: UIControl.State.selected)



        self.myButtonOutlet.addTarget(self, action: #selector(tappedButton), for: UIControl.Event.touchUpInside)
    }
}

@objc func tappedButton() {  // Colors selection is here
    if self.myButtonOutlet.isSelected == true {

        self.myButtonOutlet.isSelected = false
        self.myButtonOutlet.backgroundColor = UIColor.white         
    } else {
        self.myButtonOutlet.isSelected = true

        self.myButtonOutlet.backgroundColor = UIColor.black
        self.myButtonOutlet.tintColor00 = UIColor.white

    }
}

UIButton扩展与Swift 3+语法:

extension UIButton {
    func setBackgroundColor(color: UIColor, forState: UIControlState) {
        UIGraphicsBeginImageContext(CGSize(width: 1, height: 1))
        UIGraphicsGetCurrentContext()!.setFillColor(color.cgColor)
        UIGraphicsGetCurrentContext()!.fill(CGRect(x: 0, y: 0, width: 1, height: 1))
        let colorImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        self.setBackgroundImage(colorImage, for: forState)
    }}

像这样使用它:

YourButton.setBackgroundColor(color: UIColor.white, forState: .highlighted)

最初的回答: https://stackoverflow.com/a/30604658/3659227

如果你有一张图片，试试这个:

-(void)setBackgroundImage:(UIImage *)image forState:(UIControlState)state;

或者看看showsTouchWhenHighlighted是否足够。

下面的uiimage扩展将生成具有指定颜色参数的图像对象。

extension UIImage {
    static func imageWithColor(tintColor: UIColor) -> UIImage {
        let rect = CGRect(x: 0, y: 0, width: 1, height: 1)
        UIGraphicsBeginImageContextWithOptions(rect.size, false, 0)
        tintColor.setFill()
        UIRectFill(rect)
        let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
        UIGraphicsEndImageContext()
        return image
       }
    }

按钮的示例用法可以应用于按钮对象，如下所示:

setupButton.setBackgroundImage(UIImage.imageWithColor(tintColor: UIColor(displayP3Red: 232/255, green: 130/255, blue: 121/255, alpha: 1.0)), for: UIControlState.highlighted)

setupButton.setBackgroundImage(UIImage.imageWithColor(tintColor: UIColor(displayP3Red: 255/255, green: 194/255, blue: 190/255, alpha: 1.0)), for: UIControlState.normal)

更新:

使用UIButtonBackgroundColor Swift库。

OLD:

使用下面的帮助工具创建一个1px x 1px的图像，灰度填充颜色:

UIImage *image = ACUTilingImageGray(248/255.0, 1);

或RGB填充颜色:

UIImage *image = ACUTilingImageRGB(253/255.0, 123/255.0, 43/255.0, 1);

然后，使用该图像设置按钮的背景图像:

[button setBackgroundImage:image forState:UIControlStateNormal];

助手

#pragma mark - Helpers

UIImage *ACUTilingImageGray(CGFloat gray, CGFloat alpha)
{
    return ACUTilingImage(alpha, ^(CGContextRef context) {
        CGContextSetGrayFillColor(context, gray, alpha);
    });
}

UIImage *ACUTilingImageRGB(CGFloat red, CGFloat green, CGFloat blue, CGFloat alpha)
{
    return ACUTilingImage(alpha, ^(CGContextRef context) {
        CGContextSetRGBFillColor(context, red, green, blue, alpha);
    });
}

UIImage *ACUTilingImage(CGFloat alpha, void (^setFillColor)(CGContextRef context))
{
    CGRect rect = CGRectMake(0, 0, 0.5, 0.5);
    UIGraphicsBeginImageContextWithOptions(rect.size, alpha == 1, 0);
    CGContextRef context = UIGraphicsGetCurrentContext();
    setFillColor(context);
    CGContextFillRect(context, rect);
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}

注意:ACU是我的Cocoa Touch静态库称为Acani Utilities的类前缀，其中AC是Acani, U是Utilities。

使用https://github.com/swordray/UIButtonSetBackgroundColorForState

使用CocoaPods添加到Podfile

pod "UIButtonSetBackgroundColorForState"

斯威夫特

button.setBackgroundColor(.red, forState: .highlighted)

objective - c

[button setBackgroundColor:[UIColor redColor] forState:UIControlStateHighlighted];