Animate video UIView to go full screen like YouTube App - swift

Question

I have a view controller that has a UIView that I call playerView. In playerView, I use an AVLayer and AVPlayerLayer to show the user a video. Image the Youtube app when you first click on any video.
How do I manipulate the frame of this playerView so that it can take up the entire screen. (Go full screen)
This is the current frame:
//16 x 9 is the aspect ratio of all HD videos
let height = view.frame.width * 9 / 16
let playerFrame = CGRect(x: 0, y: 0, width: view.frame.width, height: height)
playerView.frame = videoPlayerFrame
I was testing around in the YouTube app and their app only supports Portrait orientation (just like mine) due to how the animation of a video going full screen looks. How can I do this at the the tap of a button and even further when the user holds the device horizontally?
UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
self.playerView.frame = ?
}, completion: nil)
Edit: Tried this but it doesn't really work how I want it... it doesn't take up the whole screen
UIView.animate(withDuration: 0.8, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
self.playerView.frame = CGRect(x: 0, y: 0, width: self.view.frame.height, height: self.view.frame.width)
self.playerView.transform = CGAffineTransform(rotationAngle: CGFloat(Double.pi / 2))
}, completion: nil)

Answer 1

I figured it out.
I create a global variable called isExpanded that will be set to true when we're in full screen mode. Also, I create a CGPoint variable called videoPlayerViewCenter so I can save the center before going full screen so I can set it again when going back to small screen.
This is the code that gets called when the user wants to go full screen
func fullScreenTapped(sender: vVideoPlayer) {
if !isExpanded {
//Expand the video
UIView.animate(withDuration: 0.8, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
self.videoPlayerViewCenter = self.videoPlayerView.center
self.videoPlayerView.frame = CGRect(x: 0, y: 0, width: self.view.frame.height, height: self.view.frame.width)
self.videoPlayerView.center = self.view.center
self.videoPlayerView.transform = CGAffineTransform(rotationAngle: CGFloat(Double.pi / 2))
self.videoPlayerView.layoutSubviews()
}, completion: nil)
} else {
//Shrink the video again
UIView.animate(withDuration: 0.8, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
//16 x 9 is the aspect ratio of all HD videos
self.videoPlayerView.transform = CGAffineTransform.identity
self.videoPlayerView.center = self.videoPlayerViewCenter
let height = self.view.frame.width * 9 / 16
let videoPlayerFrame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: height)
self.videoPlayerView.frame = videoPlayerFrame
self.videoPlayerView.layoutSubviews()
}, completion: nil)
}
isExpanded = !isExpanded
}
To expand the video, I save the center in my global CGPoint variable and then set the frame. Then, I set the center and do a 90 degree turn using CGAffineTransform.
To shrink the video again, I basically set the settings to how they were before. (The order in which things are done is very important)
Another thing that's also very important is to override your layoutSubviews method in your videoPlayerView to be like this:
override func layoutSubviews() {
super.layoutSubviews()
self.playerLayer?.frame = self.bounds
}
This will make it so your playerLayer adjusts its frame as the view is getting bigger.

Answer 2

I know is too late but maybe someone else can find this code helpful.
I use to use Auto layout constraints in my views so animating must have a different approach.
func setMapFullScreen(_ fullscreen: Bool) {
if fullscreen {
// Set the full screen constraints
self.setFullScreenLayoutConstraints()
// Hide the navigation bar
self.navigationController?.setNavigationBarHidden(true, animated: true)
} else {
// Set small screen constraints
self.setSmallScreenLayoutConstraints()
// Show the navigation bar
self.navigationController?.setNavigationBarHidden(false, animated: true)
}
// Animate to full screen
UIView.animate(withDuration: 0.8, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
self.view.layoutIfNeeded()
}) { (finished) in
// ...
}
In my case a have I MKMapView and I want to tap on it in order to see the map fullscreen (and back).
This is the function that toogle the state.
As you can see, in the UIView.animate call, I animate only the self.view.layoutIfNeeded()
I also hide the navigation bar cause I have one ☺
Here my setSmallScreenLayoutConstraints and setFullScreenLayoutConstraints functions using SnapKit framework
func setSmallScreenLayoutConstraints() {
self.mapView.snp.remakeConstraints { (make) -> Void in
make.top.equalTo(self.mapLabel.snp.bottom).offset(8)
make.left.equalTo(self.view).offset(0)
make.right.equalTo(self.view).offset(0)
make.height.equalTo(150)
}
}
func setFullScreenLayoutConstraints() {
self.mapView.snp.remakeConstraints { (make) -> Void in
make.top.equalTo(self.view).offset(0)
make.left.equalTo(self.view).offset(0)
make.right.equalTo(self.view).offset(0)
make.bottom.equalTo(self.view).offset(0)
}
}
This is the result
Enjoy!!

Answer 3

As I said it is not an answer for your question. It is an idea and hope it helps you:
var rectangleView:UIView!
override func viewDidLoad() {
super.viewDidLoad()
// Tap Gesture Recognizer for growing the rectangleView
let tapForward = UITapGestureRecognizer.init(target: self, action: #selector(self.tapForward(tap:)))
tapForward.numberOfTapsRequired = 1
// Configure the rectangleView
self.rectangleView = UIView.init(frame: CGRect.init(x: 0, y: 0, width: self.view.bounds.width, height: self.view.bounds.height))
self.rectangleView.transform = CGAffineTransform.init(scaleX: 0.65, y: 0.25)
self.rectangleView.backgroundColor = UIColor.red
self.rectangleView.addGestureRecognizer(tapForward)
self.view.addSubview(rectangleView)
}
And this going to be our tapForward(tap:) function:
func tapForward(tap:UITapGestureRecognizer) {
UIView.animate(withDuration: 0.5, delay: 0.0, usingSpringWithDamping: 0.7, initialSpringVelocity: 0.8, options: .curveEaseInOut, animations: {
self.rectangleView.transform = CGAffineTransform.identity
}) { (completed:Bool) in
// Completion block
}
}