How to add the text in UIImageView in Swift? - ios

Question

I have some issues for editing UIImageView. User can enter the text in imageview then it processes to save it and after that user can view this image with the text .
How can I do this?

Answer 1

I tried and got the solution for adding the text inside the UIImageview.Below is the coding
import UIKit
class ViewController: UIViewController,UINavigationControllerDelegate, UIImagePickerControllerDelegate,UIGestureRecognizerDelegate{
#IBOutlet var imageViewText: UIImageView!
var dynamicTextViewInsideImageView : UITextView!
var strImageSelected : String!
var picker = UIImagePickerController()
var xValue = CGFloat()
var yValue = CGFloat()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
imageViewText.layer.cornerRadius = 5
imageViewText.layer.borderColor = UIColor.blueColor().CGColor
imageViewText.layer.borderWidth = 1
strImageSelected = ""
}
override func viewWillAppear(animated: Bool)
{
let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("imageTapped:"))
//Add the recognizer to your view.
imageViewText.userInteractionEnabled = true
tapRecognizer.numberOfTapsRequired = 1
imageViewText.addGestureRecognizer(tapRecognizer)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func actionPickImage(sender: AnyObject)
{
var alert:UIAlertController=UIAlertController(title: "Choose Image", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)
var cameraAction = UIAlertAction(title: "Camera", style: UIAlertActionStyle.Default)
{
UIAlertAction in
self.openCamera()
}
var gallaryAction = UIAlertAction(title: "Gallary", style: UIAlertActionStyle.Default)
{
UIAlertAction in
self.openGallary()
}
var cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel)
{
UIAlertAction in
}
// Add the actions
picker.delegate = self
alert.addAction(cameraAction)
alert.addAction(gallaryAction)
alert.addAction(cancelAction)
self.presentViewController(alert, animated: true, completion: nil)
}
func openCamera()
{
if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera))
{
picker.sourceType = UIImagePickerControllerSourceType.Camera
self .presentViewController(picker, animated: true, completion: nil)
}
else
{
let alertWarning = UIAlertView(title:"Warning", message: "You don't have camera", delegate:nil, cancelButtonTitle:"OK", otherButtonTitles:"")
alertWarning.show()
}
}
func openGallary()
{
picker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
self.presentViewController(picker, animated: true, completion: nil)
}
//PickerView Delegate Methods
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject])
{
picker .dismissViewControllerAnimated(true, completion: nil)
imageViewText.image=info[UIImagePickerControllerOriginalImage] as? UIImage
strImageSelected = "ImagePicked"
}
func imagePickerControllerDidCancel(picker: UIImagePickerController)
{
println("picker cancel.")
strImageSelected = ""
}
//On the imageView you can add text(Only after you picked the image from Gallery or Camera)
func imageTapped(gestureRecognizer: UITapGestureRecognizer)
{
if strImageSelected.isEmpty{
println("Do not add the textview inside imageview as you have not picked the image from gallery or camera")
}
else
{
println("you picked the image successfully")
dynamicTextViewInsideImageView = UITextView(frame: CGRectMake(xValue,yValue,200,50))
dynamicTextViewInsideImageView.backgroundColor = UIColor( red: 0.9, green: 0.9, blue:0.9, alpha: 1.0 )
imageViewText.addSubview( dynamicTextViewInsideImageView)
}
}
//TouchEvent for Getting X,Y position once we touch inside the imageview
override func touchesBegan(touches: NSSet, withEvent event: UIEvent)
{
if let touch = touches.anyObject() as? UITouch
{
let location = touch.locationInView(imageViewText) as CGPoint
println("the location.x is - \(location.x)")
println("the location.y is - \(location.y)")
xValue = location.x
yValue = location.y
println("the xValue is - \(xValue)")
println("the yValue is - \(yValue)")
}
}
}

Answer 2

Try the following
func waterMarkedImage(waterMarkText:String, corner:WaterMarkCorner = .BottomRight, margin:CGPoint = CGPoint(x: 20, y: 20), waterMarkTextColor:UIColor = UIColor.whiteColor(), waterMarkTextFont:UIFont = UIFont.systemFontOfSize(20), backgroundColor:UIColor = UIColor.clearColor()) -> UIImage{
let textAttributes = [NSForegroundColorAttributeName:waterMarkTextColor, NSFontAttributeName:waterMarkTextFont]
let textSize = NSString(string: waterMarkText).sizeWithAttributes(textAttributes)
var textFrame = CGRectMake(0, 0, textSize.width, textSize.height)
print(textSize.height)
var imageSize = self.size
imageSize = CGSize(width: imageSize.width, height: (imageSize.height+textSize.height))
switch corner{
case .TopLeft:
textFrame.origin = margin
case .TopRight:
textFrame.origin = CGPoint(x: imageSize.width - textSize.width - margin.x, y: margin.y)
case .BottomLeft:
textFrame.origin = CGPoint(x: margin.x, y: imageSize.height - textSize.height - margin.y)
case .BottomRight:
textFrame.origin = CGPoint(x: imageSize.width - textSize.width - margin.x, y: imageSize.height - textSize.height - margin.y)
case .Center:
textFrame.origin = CGPoint(x: imageSize.width/2 - textSize.width/2, y: imageSize.height - textSize.height - margin.y)
}
/// Start creating the image with water mark
//imageSize = CGSize(width: (imageSize.width+textSize.width), height: (imageSize.height+textSize.height))
UIGraphicsBeginImageContext(imageSize)
self.drawInRect(CGRectMake(0, 0, imageSize.width, imageSize.height - textSize.height))
NSString(string: waterMarkText).drawInRect(textFrame, withAttributes: textAttributes)
let waterMarkedImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return waterMarkedImage
}