How can I change image tintColor in iOS and WatchKit - ios

Question

I have an UIImageView called "theImageView", with UIImage in a single color (transparent background) just like the left black heart below. How can I change the tint color of this image programmatically in iOS 7 or above, as per the tint method used in the iOS 7+ Navigation Bar icons?
Can this method also work in WatchKit for an Apple Watch app?

Answer 1

iOS
For an iOS app, in Swift 3, 4 or 5:
theImageView.image = theImageView.image?.withRenderingMode(.alwaysTemplate)
theImageView.tintColor = UIColor.red
For Swift 2:
theImageView.image = theImageView.image?.imageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate)
theImageView.tintColor = UIColor.redColor()
Meanwhile, the modern Objective-C solution is:
theImageView.image = [theImageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
[theImageView setTintColor:[UIColor redColor]];
Watchkit
In WatchKit for Apple Watch apps, you can set the tint color for a template image.
You must add your image to an Asset Catalog in your WatchKit App, and set the image set to be rendered as a Template Image in the Attributes Inspector. Unlike for an iPhone app, you cannot set the template rendering in code in the WatchKit Extension at present.
Set that image to be used in your WKInterfaceImage in interface builder for your app
Create an IBOutlet in your WKInterfaceController for the WKInterfaceImage called 'theImage'...
To then set the tint color in Swift 3 or 4:
theImage.setTintColor(UIColor.red)
Swift 2:
theImage.setTintColor(UIColor.redColor())
To then set the tint color in Objective-C:
[self.theImage setTintColor:[UIColor redColor]];
If you use a template image and do not apply a tint colour, the Global Tint for your WatchKit app will be applied. If you have not set a Global Tint, theImage will be tinted light blue by default when used as a template image.

Answer 2

Here's a category that should do the trick
#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
so you would do:
theImageView.image = [theImageView.image imageWithColor:[UIColor redColor]];

Answer 3

I had to do this in Swift using an extension.
I thought I'd share how I did it:
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
}
}
Usage:
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!
}
}
Usage:
theImageView.image = theImageView.image?.imageWithColor(color1: UIColor.red)

Answer 4

In storyboard and image Assets. you can change this two also:
Update the Render Mode to Template Image
Update the tint Color in Views.

Answer 5

If anyone care a solution without UIImageView:
// (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
}
}

Answer 6

Swift 4
Change tint of UIImage SVG / PDF, that work for image with unique color :
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
}
}
Change tint of UIImageView, that work for image with unique color :
let imageView = UIImageView(frame: CGRect(x: 50, y: 50, width: 50, height: 50))
imageView.image = UIImage(named: "hello.png")!.withRenderingMode(.alwaysTemplate)
imageView.tintColor = .yellow
Change tint of UIImage for picture, use that :
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!
}
}

Answer 7

With 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)

Answer 8

For swift 3 purposes
theImageView.image = theImageView.image!.withRenderingMode(.alwaysTemplate)
theImageView.tintColor = UIColor.red

Answer 9

Here's a simple extension that works for Swift 5:
extension UIImageView {
func setImageTintColor(_ color: UIColor) {
let tintedImage = self.image?.withRenderingMode(.alwaysTemplate)
self.image = tintedImage
self.tintColor = color
}
}
Usage:
myImageView.setImageTintColor(.systemBlue)

Answer 10

Also, for the above answers, in iOS 13 and later there is a clean way
let image = UIImage(named: "imageName")?.withTintColor(.white, renderingMode: .alwaysTemplate)

Answer 11

Try this
http://robots.thoughtbot.com/designing-for-ios-blending-modes
or
- (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];
}

Answer 12

For tinting the image of a UIButton
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)

Answer 13

iOS
Solution for doing it from Interface Builder, set templateImage param in keyPath and choose your tint color from IB
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
}
}
}

Answer 14

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)

Answer 15

Swift 3 version of extension answer from 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
}

Answer 16

With iOS 13 and above, you can simply use
let image = UIImage(named: "Heart")?.withRenderingMode(.alwaysTemplate)
if #available(iOS 13.0, *) {
imageView.image = image?.withTintColor(UIColor.white)
}

Answer 17

There is a native method for UIImage since iOS 13
let image = yourImage.withTintColor(.systemRed)

Answer 18

This is my UIImage extension and you can directly use changeTintColor function for an image.
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!
}
}
Example usage like this
let image = UIImage(named: "sample_image")
imageView.image = image.changeTintColor(color: UIColor.red)
And you can use change changeColor function to change the image color

Answer 19

Swift 5
Redrawing image with background and fill color
extension UIImage {
func withBackground(color: UIColor, fill fillColor: UIColor) -> UIImage {
UIGraphicsBeginImageContextWithOptions(size, true, scale)
guard let ctx = UIGraphicsGetCurrentContext(), let image = cgImage else { return self }
defer { UIGraphicsEndImageContext() }
ctx.concatenate(CGAffineTransform(a: 1, b: 0, c: 0, d: -1, tx: 0, ty: size.height))
let rect = CGRect(origin: .zero, size: size)
// draw background
ctx.setFillColor(color.cgColor)
ctx.fill(rect)
// draw image with fill color
ctx.clip(to: rect, mask: image)
ctx.setFillColor(fillColor.cgColor)
ctx.fill(rect)
return UIGraphicsGetImageFromCurrentImageContext() ?? self
}
}

Answer 20

Now i use this method based in Duncan Babbage response:
+ (UIImageView *) tintImageView: (UIImageView *)imageView withColor: (UIColor*) color{
imageView.image = [imageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
[imageView setTintColor:color];
return imageView;
}

Answer 21

You can use this in Swift 3 if you have an image to replace the clear button
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
}

Answer 22

Subclass which can be used from code and Interface Builder as well:
#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

Answer 23

profileImageView.image = theImageView.image!.withRenderingMode(.alwaysTemplate)
profileImageView.tintColor = UIColor.green
OR
First select Particular image in image asset and then select reddened as Template instead of Default and after that write line.
profileImageView.tintColor = UIColor.green

Answer 24

if you have any id for the SVG image, you can fill the colours with respect to the ID.
let image = SVGKImage(named: "iconName")
let svgIMGV = SVGKFastImageView(frame: self.imgView.frame)
svgIMGV.image = image
svgIMGV.fillTintColor(colorImage: UIColor.red, iconID: "Bank")
// Add in extension SVGKImageView
extension SVGKImageView {
func fillTintColor(colorImage: UIColor, iconID: String) {
if self.image != nil && self.image.caLayerTree != nil {
print(self.image.caLayerTree.sublayers)
guard let sublayers = self.image.caLayerTree.sublayers else { return }
fillRecursively(sublayers: sublayers, color: colorImage, iconID: iconID)
}
}
private func fillRecursively(sublayers: [CALayer], color: UIColor, iconID: String, hasFoundLayer: Bool) {
var isLayerFound = false
for layer in sublayers {
if let l = layer as? CAShapeLayer {
print(l.name)
//IF you want to color the specific shapelayer by id else remove the l.name == "myID" validation
if let name = l.name, hasFoundLayer == true && name == "myID" {
self.colorThatImageWIthColor(color: color, layer: l)
print("Colouring FInished")
}
} else {
if layer.name == iconID {
if let innerSublayer = layer.sublayers as? [CAShapeLayer] {
fillRecursively(sublayers: innerSublayer, color: color, iconID: iconID, hasFoundLayer: true )
print("FOund")
}
} else {
if let l = layer as? CALayer, let sub = l.sublayers {
fillRecursively(sublayers: sub, color: color, iconID: iconID, hasFoundLayer: false)
}
}
}
}
}
func colorThatImageWIthColor(color: UIColor, layer: CAShapeLayer) {
if layer.strokeColor != nil {
layer.strokeColor = color.cgColor
}
if layer.fillColor != nil {
layer.fillColor = color.cgColor
}
}
}
OR Checkout this example.
https://github.com/ravisfortune/SVGDEMO

Answer 25

let navHeight = self.navigationController?.navigationBar.frame.height;
let menuBtn = UIButton(type: .custom)
menuBtn.frame = CGRect(x: 0, y: 0, width: 45, height: navHeight!)
menuBtn.setImage(UIImage(named:"image_name")!.withRenderingMode(.alwaysTemplate), for: .normal)
menuBtn.tintColor = .black