I am trying to change the frame of a UIView when the orientation of my device is changed but nothing appears to work. Here is my code:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
guard
let portraitScreenView = viewScreenSizePortrait,
let overLay = overLayView else{return}
if UIDevice.current.orientation.isPortrait{
print("isPortrait")
overLay.frame = CGRect.init(x: 0, y: 0, width: portraitScreenView.width, height: portraitScreenView.height)
self.overLayView.frame = overLay.frame
}else{
print("isLandscape")
overLay.frame = CGRect.init(x: 0, y: 0, width: portraitScreenView.height, height: portraitScreenView.width)
self.overLayView.frame = overLay.frame
}
print("self.overLayView.frame: \(self.overLayView.frame)")
}
Add self.setNeedsDisplay() after your frame change.
Related
How can i draw custom oval shape like in below image in swift (not swiftUI).
Thank you in advance
I have tried to clone similar view using UIView and was able to create similar UI as you have stated on screenshot
And here is my code snippet
let width: CGFloat = view.frame.size.width
let height: CGFloat = view.frame.size.height
let path = UIBezierPath(roundedRect: CGRect(x: 0, y: 0, width: self.view.bounds.size.width, height: self.view.bounds.size.height), cornerRadius: 0)
let rect = CGRect(x: width / 2 - 150, y: height / 2.5 - 100, width: 300, height: 400)
let circlePath = UIBezierPath(ovalIn: rect)
path.append(circlePath)
path.usesEvenOddFillRule = true
let fillLayer = CAShapeLayer()
fillLayer.path = path.cgPath
fillLayer.fillRule = .evenOdd
fillLayer.fillColor = UIColor.red.cgColor
fillLayer.opacity = 0.5
view.layer.addSublayer(fillLayer)
Hope this helps you. Good day.
You can draw oval path like this
class CustomOval: UView {
override func drawRect(rect: CGRect) {
var ovalPath = UIBezierPath(ovalIn: rect)
UIColor.gray.setFill()
ovalPath.fill()
}
}
Note: iOS 13
For below code:
extension UIScrollView {
var snapshot: UIImage? {
UIGraphicsBeginImageContextWithOptions(contentSize, false, 0)
defer {
UIGraphicsEndImageContext()
}
guard let context = UIGraphicsGetCurrentContext() else { return nil }
let previousFrame = frame
let previousOffset = contentOffset
frame = CGRect(x: 0, y: 0, width: contentSize.width, height: contentSize.height)
contentOffset = CGPoint.zero
layer.render(in: context)
frame = previousFrame
contentOffset = previousOffset
return UIGraphicsGetImageFromCurrentImageContext()
}
}
It did work perfect in iOS 12, however, only snapshot part of (visible area) scrollView in iOS 13.
I want to snapshot total scrollView.Any way to solve it?
The key to solving the problem is to removeFromSuperview at first :
private func snapshot() -> UIImage? {
// remove first
scrollView.removeFromSuperview()
UIGraphicsBeginImageContextWithOptions(scrollView.contentSize, false, 0)
let savedContentOffset = scrollView.contentOffset
let savedFrame = scrollView.frame
scrollView.contentOffset = CGPoint.zero
scrollView.frame = CGRect(x: 0, y: 0, width: scrollView.contentSize.width, height: scrollView.contentSize.height)
scrollView.layer.render(in: UIGraphicsGetCurrentContext()!)
let image = UIGraphicsGetImageFromCurrentImageContext()
scrollView.contentOffset = savedContentOffset
scrollView.frame = savedFrame
UIGraphicsEndImageContext()
// add again
self.view.addSubview(scrollView)
scrollView.snp.remakeConstraints { (make) in
make.left.right.equalToSuperview()
make.top.equalTo(naviHeight)
make.bottom.equalTo(-safeBottomHeight-105)
}
return image
}
Interesting...
Hello in my code below I want to add NSImageView to my stackView, but there is a bug because there is only one that is added. The loop is 3 iterations so normally I should have 3 images:
let imageView = NSImageView(frame: NSRect(x: 0, y: 0, width: 50, height: 50))
imageView.image = image.image
icons.forEach { _ in
stackImage.addArrangedSubview(imageView)
}
print(stackImage.subviews.count) // Outpout 1
Create the NSImageView instances inside the forloop.
And you need to check stackImage.arrangedSubviews.count not stackImage.subviews.count
var icons = [NSImage(named: ""),NSImage(named: ""),NSImage(named: "")]
icons.forEach { image in
let imageView = NSImageView(frame: NSRect(x: 0, y: 0, width: 50, height: 50))
imageView.image = image
stackImage.addArrangedSubview(imageView)
}
print(stackImage.arrangedSubviews.count)
I want to change mask in animation
but it just like change to another mask without animation
screen record
I want it look like this
func creatMask(_ index: Int) -> CALayer {
let layer = CALayer()
let image = [#imageLiteral(resourceName: "bubble_1.png"),#imageLiteral(resourceName: "bubble_2.png"),#imageLiteral(resourceName: "bubble_3.png"),#imageLiteral(resourceName: "bubble_4.png"),#imageLiteral(resourceName: "bubble_5.png")]
layer.contents = image[index].cgImage
layer.contentsScale = image[index].scale
layer.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
return layer
}
#objc func transform() {
UIView.animate(withDuration: 1) {
self.redView.layer.mask = self.creatMask(1)
}
}
}
I am trying to change the square crop tool to circular one for the images selected from Photo Library in Swift 4. I tried many old codes available in here with no luck. Can somebody please help me.
There are mainly 2 issues in this code.
It doesn't hide the already existing square cropping area.
It shows the choose and cancel buttons under the old overlay, so cant tap on it.
Any help would be appreciated.
My code:
private func hideDefaultEditOverlay(view: UIView)
{
for subview in view.subviews
{
if let cropOverlay = NSClassFromString("PLCropOverlayCropView")
{
if subview.isKind(of: cropOverlay) {
subview.isHidden = true
break
}
else {
hideDefaultEditOverlay(view: subview)
}
}
}
}
private func addCircleOverlayToImageViewer(viewController: UIViewController) {
let circleColor = UIColor.clear
let maskColor = UIColor.black.withAlphaComponent(0.8)
let screenHeight = UIScreen.main.bounds.size.height
let screenWidth = UIScreen.main.bounds.size.width
hideDefaultEditOverlay(view: viewController.view)
let circleLayer = CAShapeLayer()
let circlePath = UIBezierPath(ovalIn: CGRect(x: 0, y: screenHeight - screenWidth, width: screenWidth, height: screenWidth))
circlePath.usesEvenOddFillRule = true
circleLayer.path = circlePath.cgPath
circleLayer.fillColor = circleColor.cgColor
let maskPath = UIBezierPath(roundedRect: CGRect(x: 0, y: 0, width: screenWidth, height: screenHeight), cornerRadius: 0)
maskPath.append(circlePath)
maskPath.usesEvenOddFillRule = true
let maskLayer = CAShapeLayer()
maskLayer.path = maskPath.cgPath
maskLayer.fillRule = kCAFillRuleEvenOdd
maskLayer.fillColor = maskColor.cgColor
viewController.view.layer.addSublayer(maskLayer)
// Move and Scale label
let label = UILabel(frame: CGRect(x: 0, y: 20, width: view.frame.width, height: 50))
label.text = "Move and Scale"
label.textAlignment = .center
label.textColor = UIColor.white
viewController.view.addSubview(label)
}