Questions[ios]

I want to submit my app for review and it is asking me to enter screenshots from different devices.

The problem I have is that my app is not for iPad... and the iPad option is not optional.

Where can I indicate that the app is only for iPhone? Thank you very much!!

I am making an app that works as a feed reader.

I have a UITableViewController, in which I show all the news that I read from an xml, I show the title, the date, a brief description and an image. Except the image, everything I show is correct.

I have added the library AlamofireImageto display the images. At first they don't appear, but if I reload the view with a reloadData(), the images appear.

Most of the images are seen in their correct position, but others are out of position and in some, only image is displayed. The title, date and description do not appear.

If I put a fixed width and height on the images, it appears perfectly, but if I only position them by constraints, it is when the error appears, that they take time to load

Here is the code I use:

if let actualImageView = imageView {
// actualImageView.load(currentArticleToDisplay.imagen)
/*let url:NSURL? = NSURL(string:currentArticleToDisplay.imagen)
    let imageRequest = NSURLRequest(URL: url!)
    NSURLConnection.sendAsynchronousRequest(imageRequest, queue: NSOperationQueue.mainQueue(), completionHandler: {(response, data, error) in
    actualImageView.image = UIImage(data: data!)
    //actualImageView.contentMode = UIViewContentMode.ScaleAspectFit
  })*/
  actualImageView.contentMode = .ScaleAspectFit

  let URL = NSURL(string: currentArticleToDisplay.imagen)!

  actualImageView.af_setImageWithURL(
     URL,
     placeholderImage: nil,
     filter: nil
  )
  //actualImageView.frame = view.bounds
  //actualImageView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]

  //actualImageView.contentMode = UIViewContentMode.ScaleAspectFit
}

I have the constraints defined in the Main.storyboard, because if I put them in code, they didn't load me at first either.

Any idea what could be the problem? Do I need to add more parts of the code? Is this the correct way to display images? Is there a library that can fix it?

Thank you!

@property(nonatomic, retain) UITextField *txtTelefono;
@property(atomic, retain) UITextField *txtTelefono;
@property(retain) UITextField *txtTelefono;

What is the difference in these three statements? What does a property nonatomicor mean atomic?

I have a very simple application. Which draws lines when you touch the screen with two fingers, when they lift their fingers I want to erase the drawing, and when they draw again show new lines.

However, when I delete the lines the first time, the next press causes an error with no error message. I figure I'm doing something small wrong, but I can't figure it out. Here is my code:

var prevX: CGFloat!
var prevY: CGFloat!

var startX: CGFloat = 150
var startY : CGFloat = 450

var reset: Bool = true

override func viewDidLoad() {
    super.viewDidLoad()

    var pan = UIPanGestureRecognizer(target: self, action: "pan:")
    pan.cancelsTouchesInView = false
    pan.delegate = self
    self.view.addGestureRecognizer(pan)
}

func pan(recognizer:UIPanGestureRecognizer) {
    print(self.view.layer)
    var state = recognizer.state

    if (state == UIGestureRecognizerState.Ended) {
        reset = true
        var sublayers = self.view.layer.sublayers
        for layer in sublayers {
            layer.removeFromSuperlayer()
        }
    } else {
        var interval = recognizer.translationInView(self.view)
        if (reset) {
            reset = false
            prevX = CGFloat(startX + interval.x)
            prevY = CGFloat(startY + interval.y)
        }
        var newPointX = startX + interval.x
        var newPointY = startY + interval.y

        var path = UIBezierPath().bezierPathByReversingPath()
        path.moveToPoint(CGPoint(x: prevX, y: prevY))
        path.addLineToPoint(CGPoint(x:newPointX, y:newPointY))

        var shapeLayer = CAShapeLayer()
        shapeLayer.path = path.CGPath
        shapeLayer.strokeColor = UIColor.blueColor().CGColor
        shapeLayer.lineWidth = 1.0
        shapeLayer.fillColor = UIColor.clearColor().CGColor

        self.view.layer.addSublayer(shapeLayer)

        prevX = newPointX
        prevY = newPointY

    }
}

A little more information about the error

Thread 1: EXC_BAD_ACCESS code=1, address=0x499e....
     ___UIApplicationExtensionGetAccurateShareServicesExtensionForIdentifier_block_invoke_2
    0x18c00e3c0:  adrp   x8, 54568
    0x18c00e3c4:  ldr    x8, [x8, #2248]
    0x18c00e3c8:  ldr    x8, [x8]
    0x18c00e3cc:  ldr    x9, [sp, #56]
    0x18c00e3d0:  sub    x8, x8, x9
    0x18c00e3d4:  cbnz   x8, 0x18c00e3fc           ; UIApplicationMain + 1548
    0x18c00e3d8:  movz   w0, #0

I think it is this line that is causing the error.

        for layer in sublayers {
        layer.removeFromSuperlayer()
    }

because if I remove it the program works without any problem ( but it doesn't delete the lines )

Using the new Contacts Framework in iOS 9, how can I get the contact creation date?

In previous versions, using the Address Book Framework, you could do:

ABRecordRef person = ...
NSDate *creationDate = (__bridge_transfer NSDate *)ABRecordCopyValue(person, kABPersonCreationDateProperty);

but using the new framework I didn't find any property on CNContactnor any "key" to be able to get this value.