October 2014 - helpMeCodeSwift.com

Tip Calculator App

Hi, this is another basic app, that seems to be a must for every beginner. Again we are implementing the use of a slider and some basic math operations. Also this will help you understand how to put everything you need to reuse in a function. It makes things much more easy to use, […]

Turkey Baking Calculator App

This is an example code again for an exercise of the same class. The main goal is to create a baking calculator. It teaches you how to use some very important and basic functions like: using a slider how to convert time units and present them properly basic calculations basic user interface Here are a […]

Meme app, draft 1

Ok, this is the first draft of an app, which was supposed to be something like a Meme generator. It was an exercise on the class I am taking with instructor Paul Solt at iphonedev.tv . The app includes a lot of different functions and it’s a very useful experience. There are still a bunch […]

Creating a Rotate Gesture

Here is a complete Rotate Gesture example: We have 2 things – a handle and the gesture itself that uses the handle.. Here is the gesture:

func createRotateGestureRecognizer(targetView:UIImageView) {
var rotateGesture = UIRotationGestureRecognizer(target: self, action: ("handleRotate:"))
targetView.addGestureRecognizer(rotateGesture)
rotateGesture.delegate = self
}

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func createRotateGestureRecognizer(targetView:UIImageView) {

var rotateGesture = UIRotationGestureRecognizer(target: self, action: ("handleRotate:"))

targetView.addGestureRecognizer(rotateGesture)

rotateGesture.delegate = self

}

("handleRotate:")

1	("handleRotate:")

is what points to the Handle ( make sure you don’t misspell this). Here is the actual handle:

 func handleRotate(recognizer : UIRotationGestureRecognizer) {
recognizer.view!.transform = CGAffineTransformRotate(recognizer.view!.transform, recognizer.rotation)
recognizer.rotation = 0
var label = recognizer.view as UIImageView  // creating a new UIImageView out of the rotation
    if recognizer.state == UIGestureRecognizerState.Changed {
                     hoverShadow(label) // add some Extra Shadow when we are rotating the new ImageView
               }
    else {
                     shadow(label) // return to the original Shadow when not moving
               }
}

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func handleRotate(recognizer : UIRotationGestureRecognizer) {

recognizer.view!.transform = CGAffineTransformRotate(recognizer.view!.transform, recognizer.rotation)

recognizer.rotation = 0

var label = recognizer.view as UIImageView // creating a new UIImageView out of the rotation

if recognizer.state == UIGestureRecognizerState.Changed {

hoverShadow(label) // add some Extra Shadow when we are rotating the new ImageView

}

else {

shadow(label) // return to the original Shadow when not moving

}

Creating a Pan Gesture

Here is a complete Pan Gesture example: We have 2 things – a handle and the gesture itself that uses the handle.. Here is the gesture:

// The Pan Gesture
func createPanGestureRecognizer(targetView: UIImageView) {
        
        var panGesture = UIPanGestureRecognizer(target: self, action: ("handlePanGesture:"))
        targetView.addGestureRecognizer(panGesture)
        }

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// The Pan Gesture

func createPanGestureRecognizer(targetView: UIImageView) {

var panGesture = UIPanGestureRecognizer(target: self, action: ("handlePanGesture:"))

targetView.addGestureRecognizer(panGesture)

}

("handlePanGesture:"))

1	("handlePanGesture:"))

is what points to the Handle ( make sure you don’t misspell this ). Here is the actual handle:

 // THE HANDLE 

       func handlePanGesture(panGesture: UIPanGestureRecognizer) {
        
        
        //        get translation
        
        var translation = panGesture.translationInView(view)
        panGesture.setTranslation(CGPointZero, inView: view)
        println(translation)
        

        //create a new Label and give it the parameters of the old one
        var label = panGesture.view as UIImageView
        label.center = CGPoint(x: label.center.x+translation.x, y: label.center.y+translation.y)
        label.multipleTouchEnabled = true
        label.userInteractionEnabled = true
        
        if panGesture.state == UIGestureRecognizerState.Began {
            
            //add something you want to happen when the Label Panning has started
        }
        
        if panGesture.state == UIGestureRecognizerState.Ended {
            
           //add something you want to happen when the Label Panning has ended
            
        }

        
        if panGesture.state == UIGestureRecognizerState.Changed {
            
        //add something you want to happen when the Label Panning has been change ( during the moving/panning ) 
        
        }
        
        else {
            
           // or something when its not moving
        }
        
        }

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// THE HANDLE

func handlePanGesture(panGesture: UIPanGestureRecognizer) {

// get translation

var translation = panGesture.translationInView(view)

panGesture.setTranslation(CGPointZero, inView: view)

println(translation)

//create a new Label and give it the parameters of the old one

var label = panGesture.view as UIImageView

label.center = CGPoint(x: label.center.x+translation.x, y: label.center.y+translation.y)

label.multipleTouchEnabled = true

label.userInteractionEnabled = true

if panGesture.state == UIGestureRecognizerState.Began {

//add something you want to happen when the Label Panning has started

}

if panGesture.state == UIGestureRecognizerState.Ended {

//add something you want to happen when the Label Panning has ended

}

if panGesture.state == UIGestureRecognizerState.Changed {

//add something you want to happen when the Label Panning has been change ( during the moving/panning )

}

else {

// or something when its not moving

}