试试这个!!!!

TouchedDown事件设置一种颜色，TouchUpInside设置另一种颜色。

- (IBAction)touchedDown:(id)sender {
    NSLog(@"Touched Down");
    btn1.backgroundColor=[UIColor redColor];
}

- (IBAction)touchUpInside:(id)sender {
    NSLog(@"TouchUpInside");
    btn1.backgroundColor=[UIColor whiteColor];    
}

extension UIButton {
    func setBackgroundColor(color: UIColor, forState: UIControl.State) {
        let size = CGSize(width: 1, height: 1)
        UIGraphicsBeginImageContext(size)
        let context = UIGraphicsGetCurrentContext()
        context?.setFillColor(color.cgColor)
        context?.fill(CGRect(origin: CGPoint.zero, size: size))
        let colorImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        setBackgroundImage(colorImage, for: forState)
    }

}

谢谢@Maverick

你可以子类化UIButton并创建forState。

colourButton.h

#import <UIKit/UIKit.h>

@interface colourButton : UIButton

-(void)setBackgroundColor:(UIColor *)backgroundColor forState:(UIControlState)state;

@end

颜色按钮.m

#import "colourButton.h"

@implementation colourButton
{
    NSMutableDictionary *colours;
}

-(id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];

    // If colours does not exist
    if(!colours)
    {
        colours = [NSMutableDictionary new];  // The dictionary is used to store the colour, the key is a text version of the ENUM
        colours[[NSString stringWithFormat:@"%lu", UIControlStateNormal]] = (UIColor*)self.backgroundColor;  // Store the original background colour
    }

    return self;
}

-(void)setBackgroundColor:(UIColor *)backgroundColor forState:(UIControlState)state
{
    // If it is normal then set the standard background here
    if(state & UIControlStateNormal)
    {
        [super setBackgroundColor:backgroundColor];
    }

    // Store the background colour for that state
    colours[[NSString stringWithFormat:@"%lu", state]]= backgroundColor;
}

-(void)setHighlighted:(BOOL)highlighted
{
    // Do original Highlight
    [super setHighlighted:highlighted];

    // Highlight with new colour OR replace with orignial
    if (highlighted && colours[[NSString stringWithFormat:@"%lu", UIControlStateHighlighted]])
    {
        self.backgroundColor = colours[[NSString stringWithFormat:@"%lu", UIControlStateHighlighted]];
    }
    else
    {
        self.backgroundColor = colours[[NSString stringWithFormat:@"%lu", UIControlStateNormal]];
    }
}

-(void)setSelected:(BOOL)selected
{
    // Do original Selected
    [super setSelected:selected];

    // Select with new colour OR replace with orignial
    if (selected && colours[[NSString stringWithFormat:@"%lu", UIControlStateSelected]])
    {
        self.backgroundColor = colours[[NSString stringWithFormat:@"%lu", UIControlStateSelected]];
    }
    else
    {
        self.backgroundColor = colours[[NSString stringWithFormat:@"%lu", UIControlStateNormal]];
    }
}

@end

注释(这是一个例子，我知道有问题，这里有一些)

我已经使用了一个NSMutableDictionay来存储每个状态的UIColor，我必须为键做一个讨厌的文本转换，因为UIControlState不是一个很好的直Int。如果它在哪里，你可以init一个数组与许多对象，并使用状态作为一个索引。

因此，你有很多困难，例如一个选中&禁用按钮，一些更多的逻辑是需要的。

另一个问题是，如果你试图同时设置多种颜色，我没有尝试过一个按钮，但如果你能这样做，它可能不会工作

 [btn setBackgroundColor:colour forState:UIControlStateSelected & UIControlStateHighlighted];

我假设这是StoryBoard，没有init和initWithFrame如果你需要，可以添加它们。

解决方案Swift 3+没有子类化。

extension UIButton {
  func setBackgroundColor(_ color: UIColor, for state: UIControlState) {
    let rect = CGRect(x: 0, y: 0, width: 1, height: 1)
    UIGraphicsBeginImageContext(rect.size)
    color.setFill()
    UIRectFill(rect)
    let colorImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    setBackgroundImage(colorImage, for: state)
  }
}

有了这个扩展，它很容易管理不同状态的颜色，它会自动褪色你的正常颜色，如果高亮的颜色是不提供的。

button.setBackgroundColor(.red, for: .normal)

简单的是只使用UIButton扩展

extension UIButton {

    func setBackgroundColor(color: UIColor, forState: UIControl.State) {
        self.clipsToBounds = true  // add this to maintain corner radius
        UIGraphicsBeginImageContext(CGSize(width: 1, height: 1))
        if let context = UIGraphicsGetCurrentContext() {
            context.setFillColor(color.cgColor)
            context.fill(CGRect(x: 0, y: 0, width: 1, height: 1))
            let colorImage = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext()
            self.setBackgroundImage(colorImage, for: forState)
        }
    }

}

然后用这个

 optionButton.setBackgroundColor(color: UIColor(red:0.09, green:0.42, blue:0.82, alpha:1.0), forState: .selected)

 optionButton.setBackgroundColor(color: UIColor(red:0.96, green:0.96, blue:0.96, alpha:1.0), forState: .highlighted)

 optionButton.setBackgroundColor(color: UIColor(red:0.96, green:0.96, blue:0.96, alpha:1.0), forState: .normal)

重写突出显示的变量。 添加@IBInspectable可以让你在故事板中编辑突出显示的backgroundColor，这也很漂亮。

class BackgroundHighlightedButton: UIButton {
    @IBInspectable var highlightedBackgroundColor :UIColor?
    @IBInspectable var nonHighlightedBackgroundColor :UIColor?
    override var highlighted :Bool {
        get {
            return super.highlighted
        }
        set {
            if newValue {
                self.backgroundColor = highlightedBackgroundColor
            }
            else {
                self.backgroundColor = nonHighlightedBackgroundColor
            }
            super.highlighted = newValue
        }
    }
}