我有一个名为“theImageView”的UIImageView，UIImage为单色（透明背景），就像下面的左黑心一样 . 如何根据iOS 7导航栏图标中使用的色调方法在iOS 7或更高版本中以编程方式更改此图像的色调？

此方法是否也可以在WatchKit中用于Apple Watch应用程序？

enter image description here

18 回答

用于着色UIButton的图像

let image1 = "ic_shopping_cart_empty"
    btn_Basket.setImage(UIImage(named: image1)?.withRenderingMode(.alwaysTemplate), for: .normal)
        btn_Basket.setImage(UIImage(named: image1)?.withRenderingMode(.alwaysTemplate), for: .selected)
        btn_Basket.imageView?.tintColor = UIColor(UIColor.Red)

回复于 2024-04-29T14:57:28+08:00

这是我的UIImage扩展，您可以直接对图像使用changeTintColor函数 .

extension UIImage {

    func changeTintColor(color: UIColor) -> UIImage {
        var newImage = self.withRenderingMode(.alwaysTemplate)
        UIGraphicsBeginImageContextWithOptions(self.size, false, newImage.scale)
        color.set()
        newImage.draw(in: CGRect(x: 0.0, y: 0.0, width: self.size.width, height: self.size.height))
        newImage = UIGraphicsGetImageFromCurrentImageContext()!
        UIGraphicsEndImageContext()
        return newImage
    }

    func changeColor(color: UIColor) -> UIImage {
        let backgroundSize = self.size
        UIGraphicsBeginImageContext(backgroundSize)
        guard let context = UIGraphicsGetCurrentContext() else {
            return self
        }
        var backgroundRect = CGRect()
        backgroundRect.size = backgroundSize
        backgroundRect.origin.x = 0
        backgroundRect.origin.y = 0

        var red: CGFloat = 0
        var green: CGFloat = 0
        var blue: CGFloat = 0
        var alpha: CGFloat = 0
        color.getRed(&red, green: &green, blue: &blue, alpha: &alpha)
        context.setFillColor(red: red, green: green, blue: blue, alpha: alpha)
        context.translateBy(x: 0, y: backgroundSize.height)
        context.scaleBy(x: 1.0, y: -1.0)
        context.clip(to: CGRect(x: 0.0, y: 0.0, width: self.size.width, height: self.size.height),
                 mask: self.cgImage!)
        context.fill(backgroundRect)

        var imageRect = CGRect()
        imageRect.size = self.size
        imageRect.origin.x = (backgroundSize.width - self.size.width) / 2
        imageRect.origin.y = (backgroundSize.height - self.size.height) / 2

        context.setBlendMode(.multiply)
        context.draw(self.cgImage!, in: imageRect)

        let newImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return newImage!
    }

}

像这样的用法示例

let image = UIImage(named: "sample_image")
imageView.image = image.changeTintColor(color: UIColor.red)

您可以使用更改 changeColor 功能来更改图像颜色

回复于 2024-04-29T14:57:28+08:00

斯威夫特4

更改 UIImage SVG / PDF 的色调，适用于 image with unique color ：

enter image description here

import Foundation

// MARK: - UIImage extensions

public extension UIImage {

    //
    /// Tint Image
    ///
    /// - Parameter fillColor: UIColor
    /// - Returns: Image with tint color
    func tint(with fillColor: UIColor) -> UIImage? {
        let image = withRenderingMode(.alwaysTemplate)
        UIGraphicsBeginImageContextWithOptions(size, false, scale)
        fillColor.set()
        image.draw(in: CGRect(origin: .zero, size: size))

        guard let imageColored = UIGraphicsGetImageFromCurrentImageContext() else {
            return nil
        }

        UIGraphicsEndImageContext()
        return imageColored
    }
}

更改 UIImageView 的色调，适用于 image with unique color ：

enter image description here

let imageView = UIImageView(frame: CGRect(x: 50, y: 50, width: 50, height: 50))
imageView.image = UIImage(named: "hello.png")!.withRenderingMode(.alwaysTemplate)
imageView.tintColor = .yellow

为 picture 更改 UIImage 的色调，使用：

enter image description here

import Foundation

// MARK: - Extensions UIImage

public extension UIImage {

    /// Tint, Colorize image with given tint color
    /// This is similar to Photoshop's "Color" layer blend mode
    /// This is perfect for non-greyscale source images, and images that 
    /// have both highlights and shadows that should be preserved<br><br>
    /// white will stay white and black will stay black as the lightness of 
    /// the image is preserved
    ///
    /// - Parameter TintColor: Tint color
    /// - Returns:  Tinted image
    public func tintImage(with fillColor: UIColor) -> UIImage {

        return modifiedImage { context, rect in
            // draw black background - workaround to preserve color of partially transparent pixels
            context.setBlendMode(.normal)
            UIColor.black.setFill()
            context.fill(rect)

            // draw original image
            context.setBlendMode(.normal)
            context.draw(cgImage!, in: rect)

            // tint image (loosing alpha) - the luminosity of the original image is preserved
            context.setBlendMode(.color)
            fillColor.setFill()
            context.fill(rect)

            // mask by alpha values of original image
            context.setBlendMode(.destinationIn)
            context.draw(context.makeImage()!, in: rect)
        }
    }

    /// Modified Image Context, apply modification on image
    ///
    /// - Parameter draw: (CGContext, CGRect) -> ())
    /// - Returns:        UIImage
    fileprivate func modifiedImage(_ draw: (CGContext, CGRect) -> ()) -> UIImage {

        // using scale correctly preserves retina images
        UIGraphicsBeginImageContextWithOptions(size, false, scale)
        let context: CGContext! = UIGraphicsGetCurrentContext()
        assert(context != nil)

        // correctly rotate image
        context.translateBy(x: 0, y: size.height)
        context.scaleBy(x: 1.0, y: -1.0)

        let rect = CGRect(x: 0.0, y: 0.0, width: size.width, height: size.height)

        draw(context, rect)

        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return image!
    }
}

回复于 2024-04-29T14:57:28+08:00

试试这个

http://robots.thoughtbot.com/designing-for-ios-blending-modes

要么

- (void)viewDidLoad
{
[super viewDidLoad];

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 30, 300, 50)];
label.numberOfLines = 0;
label.font = [UIFont systemFontOfSize:13];
label.text = @"These checkmarks use the same gray checkmark image with a tintColor applied to the image view";
[self.view addSubview:label];

[self _createImageViewAtY:100 color:[UIColor purpleColor]];
}

- (void)_createImageViewAtY:(int)y color:(UIColor *)color {
UIImage *image = [[UIImage imageNamed:@"gray checkmark.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
CGRect frame = imageView.frame;
frame.origin.x = 100;
frame.origin.y = y;
imageView.frame = frame;

if (color)
    imageView.tintColor = color;

[self.view addSubview:imageView];
}

回复于 2024-04-29T14:57:28+08:00

0

profileImageView.image = theImageView.image！.withRenderingMode（.alwaysTemplate）
profileImageView.tintColor = UIColor.green

要么

首先选择图像资源中的特定图像，然后选择红色为模板而不是默认值，然后选择该写入行 . profileImageView.tintColor = UIColor.green

回复于 2024-04-29T14:57:28+08:00

Swift 3 扩展答案的版本来自 fuzz

func imageWithColor(color: UIColor) -> UIImage {
    UIGraphicsBeginImageContextWithOptions(self.size, false, self.scale)
    color.setFill()

    let context = UIGraphicsGetCurrentContext()! as CGContext
    context.translateBy(x: 0, y: self.size.height)
    context.scaleBy(x: 1.0, y: -1.0);
    context.setBlendMode(.normal)

    let rect = CGRect(x: 0, y: 0, width: self.size.width, height: self.size.height) as CGRect
    context.clip(to: rect, mask: self.cgImage!)
    context.fill(rect)

    let newImage = UIGraphicsGetImageFromCurrentImageContext()! as UIImage
    UIGraphicsEndImageContext()

    return newImage
}

回复于 2024-04-29T14:57:28+08:00

如果您有图像来替换清除按钮，则可以在Swift 3中使用它

func addTextfieldRightView(){

    let rightViewWidth:CGFloat = 30

    let viewMax = self.searchTxt.frame.height
    let buttonMax = self.searchTxt.frame.height - 16

    let buttonView = UIView(frame: CGRect(
        x: self.searchTxt.frame.width - rightViewWidth,
        y: 0,
        width: viewMax,
        height: viewMax))

    let myButton = UIButton(frame: CGRect(
        x: (viewMax - buttonMax) / 2,
        y: (viewMax - buttonMax) / 2,
        width: buttonMax,
        height: buttonMax))

    myButton.setImage(UIImage(named: "BlueClear")!, for: .normal)

    buttonView.addSubview(myButton)

    let clearPressed = UITapGestureRecognizer(target: self, action: #selector(SearchVC.clearPressed(sender:)))
    buttonView.isUserInteractionEnabled = true
    buttonView.addGestureRecognizer(clearPressed)

    myButton.addTarget(self, action: #selector(SearchVC.clearPressed(sender:)), for: .touchUpInside)

    self.searchTxt.rightView = buttonView
    self.searchTxt.rightViewMode = .whileEditing
}

回复于 2024-04-29T14:57:28+08:00

现在我使用这个基于Duncan Babbage响应的方法：

+ (UIImageView *) tintImageView: (UIImageView *)imageView withColor: (UIColor*) color{
    imageView.image = [imageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
    [imageView setTintColor:color];
    return imageView;
}

回复于 2024-04-29T14:57:28+08:00

116

这是一个应该做的技巧

@interface UIImage(Overlay)
@end

@implementation UIImage(Overlay)

- (UIImage *)imageWithColor:(UIColor *)color1
{
        UIGraphicsBeginImageContextWithOptions(self.size, NO, self.scale);
        CGContextRef context = UIGraphicsGetCurrentContext();
        CGContextTranslateCTM(context, 0, self.size.height);
        CGContextScaleCTM(context, 1.0, -1.0);
        CGContextSetBlendMode(context, kCGBlendModeNormal);
        CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);
        CGContextClipToMask(context, rect, self.CGImage);
        [color1 setFill];
        CGContextFillRect(context, rect);
        UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();
        return newImage;
}
@end

所以你会这样做：

theImageView.image = [theImageView.image imageWithColor:[UIColor redColor]];

回复于 2024-04-29T14:57:28+08:00

iOS

从InterfaceBuilder，set templateImage param in keyPath执行此操作的解决方案，并选择您从IB着色

extension UIImageView {

// make template image with tint color
var templateImage: Bool {
    set {
        if newValue, let image = self.image {
            let newImage = image.withRenderingMode(.alwaysTemplate)
            self.image = newImage
        }
    } get {
        return false
    }
}

}

回复于 2024-04-29T14:57:28+08:00

我必须使用 extension 在Swift中执行此操作 .

我以为我会分享我是怎么做到的：

extension UIImage {
    func imageWithColor(color1: UIColor) -> UIImage {
        UIGraphicsBeginImageContextWithOptions(self.size, false, self.scale)
        color1.setFill()

        let context = UIGraphicsGetCurrentContext() as CGContextRef
        CGContextTranslateCTM(context, 0, self.size.height)
        CGContextScaleCTM(context, 1.0, -1.0);
        CGContextSetBlendMode(context, CGBlendMode.Normal)

        let rect = CGRectMake(0, 0, self.size.width, self.size.height) as CGRect
        CGContextClipToMask(context, rect, self.CGImage)
        CGContextFillRect(context, rect)

        let newImage = UIGraphicsGetImageFromCurrentImageContext() as UIImage
        UIGraphicsEndImageContext()

        return newImage
    }
}

用法：

theImageView.image = theImageView.image.imageWithColor(UIColor.redColor())

Swift 4

extension UIImage {
    func imageWithColor(color1: UIColor) -> UIImage {
        UIGraphicsBeginImageContextWithOptions(self.size, false, self.scale)
        color1.setFill()

        let context = UIGraphicsGetCurrentContext()
        context?.translateBy(x: 0, y: self.size.height)
        context?.scaleBy(x: 1.0, y: -1.0)
        context?.setBlendMode(CGBlendMode.normal)

        let rect = CGRect(origin: .zero, size: CGSize(width: self.size.width, height: self.size.height))
        context?.clip(to: rect, mask: self.cgImage!)
        context?.fill(rect)

        let newImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        return newImage!
    }
}

用法：

theImageView.image = theImageView.image?.imageWithColor(color1: UIColor.red)

回复于 2024-04-29T14:57:28+08:00

Take benefit of Extension in Swift :-

extension UIImageView {
    func changeImageColor( color:UIColor) -> UIImage
    {
        image = image!.withRenderingMode(.alwaysTemplate)
        tintColor = color
        return image!
    }
}

   //Change color of logo 
   logoImage.image =  logoImage.changeImageColor(color: .red)

enter image description here

回复于 2024-04-29T14:57:28+08:00

可以从代码和Interface Builder中使用的子类：

@implementation TintedImageView

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        [self setup];
    }
    return self;
}

- (instancetype)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    if (self) {
        [self setup];
    }
    return self;
}

-(void)setup {
    self.image = [self.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
}

@end

回复于 2024-04-29T14:57:28+08:00

3

在故事板和图像资产 . 你也可以改变这两个：

将渲染模式更新为模板图像

更新视图中的色调颜色 .

回复于 2024-04-29T14:57:28+08:00

随着Swift

let commentImageView = UIImageView(frame: CGRectMake(100, 100, 100, 100))
commentImageView.image = UIImage(named: "myimage.png")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate)
commentImageView.tintColor = UIColor.blackColor()
addSubview(commentImageView)

回复于 2024-04-29T14:57:28+08:00

0
iOS
对于iOS应用程序，在Swift 3或4中：
```
theImageView.image = theImageView.image!.withRenderingMode(.alwaysTemplate)
theImageView.tintColor = UIColor.red
```
斯威夫特2：
```
theImageView.image = theImageView.image!.imageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate)
theImageView.tintColor = UIColor.redColor()
```
同时，现代的Objective-C解决方案是：
```
theImageView.image = [theImageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
[theImageView setTintColor:[UIColor redColor]];
```
Watchkit
在WatchKit for Apple Watch应用程序中，您可以设置tint color for a template image .
- 您必须将图像添加到WatchKit应用程序中的资产目录，并将图像集设置为在属性检查器中呈现为模板图像 . 与iPhone应用程序不同，您目前无法在WatchKit Extension中的代码中设置模板渲染 .
- 设置要在应用程序的界面构建器中的WKInterfaceImage中使用的图像
- 在WKInterfaceController中为名为'theImage'的WKInterfaceImage创建一个IBOutlet ...
然后在Swift 3或4中设置色调颜色：
```
theImage.setTintColor(UIColor.red)
```
斯威夫特2：
```
theImage.setTintColor(UIColor.redColor())
```
然后在Objective-C中设置色调颜色：
```
[self.theImage setTintColor:[UIColor redColor]];
```
如果您使用模板图像并且不应用色调颜色，则将应用WatchKit应用程序的全局色调 . 如果尚未设置全局色调，则 theImage 在用作模板图像时将默认为浅蓝色 .
回复于 2024-04-29T14:57:28+08:00

-1

如果有人关心没有 UIImageView 的解决方案：

// (Swift 3)
extension UIImage {
    func tint(with color: UIColor) -> UIImage {
        var image = withRenderingMode(.alwaysTemplate)
        UIGraphicsBeginImageContextWithOptions(size, false, scale)
        color.set()

        image.draw(in: CGRect(origin: .zero, size: size))
        image = UIGraphicsGetImageFromCurrentImageContext()!
        UIGraphicsEndImageContext()
        return image
    }
}

回复于 2024-04-29T14:57:28+08:00

604

为了迅速3目的

theImageView.image = theImageView.image!.withRenderingMode(.alwaysTemplate) theImageView.tintColor = UIColor.red

回复于 2024-04-29T14:57:28+08:00

如何在iOS和WatchKit中更改图像tintColor

18 回答

斯威夫特4

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