Not showing merged image and text in swift 3 - swift3

Question

Hi I am new to swift 3 and Xcode 8 I have an issue in my below code Build get succeeded and it runs well in a simulator but image and text are not get showed what I did wrong?
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
generateImageWithText(text: "HelloWorld")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#discardableResult
func generateImageWithText(text: String) -> UIImage
{
let image = UIImage(named: "apple_led.png")!
let imageView = UIImageView(image: image)
imageView.backgroundColor = UIColor.black
imageView.frame = CGRect(origin: CGPoint(x: 0,y :0), size: CGSize(width: 100, height: 100))
let label = UILabel(frame: CGRect(origin: CGPoint(x: 0,y :0), size: CGSize(width: 50, height: 50)))
label.backgroundColor = UIColor.white
label.textAlignment = .center
label.textColor = UIColor.blue
label.text = text
UIGraphicsBeginImageContextWithOptions(label.bounds.size, false, 0);
imageView.layer.render(in: UIGraphicsGetCurrentContext()!)
label.layer.render(in: UIGraphicsGetCurrentContext()!)
let imageWithText = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext();
print(image)
print(text)
print(label)
return imageWithText!
}
}

Answer 1

Try this
func mergeImageAndText(text: NSString, atPoint: CGPoint) -> UIImage{
let demoImage = UIImage(named: "test.png")!
// Setup the font specific variables
let textColor = UIColor.white
let textFont = UIFont(name: "Helvetica", size: 14)!
// Setup the image context using the passed image
let scale = UIScreen.main.scale
UIGraphicsBeginImageContextWithOptions(demoImage.size, false, scale)
// Setup the font attributes that will be later used to dictate how the text should be drawn
let textFontAttributes = [
NSFontAttributeName: textFont,
NSForegroundColorAttributeName: textColor,
] as [String : Any]
demoImage.draw(in: CGRect(x: 0, y: 0, width: 50, height:50))
let rect = CGRect(x: atPoint.x, y: atPoint.y, width: demoImage.size.width, height: demoImage.size.height)
// Draw the text into an image
text.draw(in: rect, withAttributes: textFontAttributes)
// Create a new image out of the images we have created
let newImage = UIGraphicsGetImageFromCurrentImageContext()
// End the context now that we have the image we need
UIGraphicsEndImageContext()
//Pass the image back up to the caller
return newImage!
}
Method Call:
let imagenew = self.mergeImageAndText(text: "TEST", atPoint: CGPoint(x: 10, y: 10))