In my program, I have a View called "previewView" applied to be an area to show the camera capturing window. I am trying to apply another View based on the information that the "previewView" shows by using script instead of dragging a new view from the storyboard, and the View/frame in red should be at the same position as the "previewView". Now, I am getting a wrong result like the picture shown below.
The code I wrote for implementing the function is here: let targetRegion = CALayer()
func addTargetLayer(){
//try to convert the position of
//the "previewView" to the absolute position of screen
var tempPreviewView = previewView.convertPoint(previewView.center, toView: nil)
//apply the position converted previously
//to the targetRegion in the red colour
targetRegion.frame = CGRect(origin: CGPoint(x: tempPreviewView.x, y: tempPreviewView.y), size: CGSize(width: previewView.frame.width, height: previewView.frame.height))
let color = UIColor.redColor()
targetRegion.backgroundColor=color.CGColor
targetRegion.opacity = 0.5
self.view.layer.addSublayer(targetRegion)
}
I also tried something like the answer suggested in the following post, but it didn't work for me: Using convertPoint to get the relative position inside a parent UIView
Anyone have some ideas? Thanks
