Ios – Force landscape mode in one ViewController using Swift

ioslandscapeswift

I am trying to force only one view in my application on landscape mode,
I am calling

override func shouldAutorotate() -> Bool {
    print("shouldAutorotate")
    return false
}

override func supportedInterfaceOrientations() -> Int {
    print("supportedInterfaceOrientations")
    return Int(UIInterfaceOrientationMask.LandscapeLeft.rawValue)
}

override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
    return UIInterfaceOrientation.LandscapeLeft
}

The view is launched in the portrait mode, and keep rotating when I change the device orientation.
The shouldAutorotate is never called.
Any help would be appreciated.

Best Answer

It may be useful for others, I found a way to force the view to launch in landscape mode:

Put this in the viewDidLoad():

let value = UIInterfaceOrientation.landscapeLeft.rawValue
UIDevice.current.setValue(value, forKey: "orientation")

and,

override var shouldAutorotate: Bool {
    return true
}

Related Solutions

AS3 – iOS force landscape mode only

I found the answer to this over on the Adobe forums a few days ago.

Set Aspect Ratio to Auto.

Set Auto Orientation to allowed.

Then use this code on your main clip:

var startOrientation:String = stage.orientation;
if (startOrientation == StageOrientation.DEFAULT || startOrientation == StageOrientation.UPSIDE_DOWN)
  {
    stage.setOrientation(StageOrientation.ROTATED_RIGHT);
  }
  else
  {
    stage.setOrientation(startOrientation);
  }                    

stage.addEventListener(StageOrientationEvent.ORIENTATION_CHANGING, orientationChangeListener);

function orientationChangeListener(e:StageOrientationEvent)
{
   if (e.afterOrientation == StageOrientation.DEFAULT || e.afterOrientation ==  StageOrientation.UPSIDE_DOWN)
   {
     e.preventDefault();
   }
}

Worked fine for me..

Resizing Image from a decoded ByteArray

The workaround I used is as follows:

I created an event listener for the img display object. Then after the img has loaded, I manually set the height and width of the image. I know what I want the height (preHeight) to be so that is hardcoded. I then calculate the width and set that as the image width. For some reason I had to use the explicitHeight and explicitWidth properties to finally get the sizing right.

I hope this helps someone.

img.addEventListener(FlexEvent.CREATION_COMPLETE, onCreationComplete);

private function onCreationComplete(event:FlexEvent) : void
{
  img.addEventListener(Event.COMPLETE, onImageLoadComplete);
}

private function onImageLoadComplete(event:Event) : void
{
    var image:Image = event.currentTarget as Image;
    var preHeight:Number = 0;
    var h:uint = Bitmap(image.content).bitmapData.height;
    var w:uint = Bitmap(image.content).bitmapData.width;

    // Check height
    preHeight = h > 170 ? 170 : h;
    // Set the width
    img.explicitWidth = (preHeight * w)/h;
    img.explicitHeight = preHeight; 
}

Best Answer

Related Solutions

AS3 – iOS force landscape mode only

Resizing Image from a decoded ByteArray

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