Whether the view I'm creating is a LOTAnimatedSwitch or View, the image of the animation always appears very small. The lottie animation doesn't take up the size of the view that I create. Is this an issue with downloading the animation from LottieFiles? The dimensions of the file are 600x600 pixels. I'm using Lottie version 2.5.0 and Swift 4. For example:
let animatedSwitch = LOTAnimatedSwitch(named: "toggle_switch")
animatedSwitch.frame.origin = CGPoint(x: 8, y: separatorLineView.frame.height + separatorLineView.frame.origin.y + 8)
animatedSwitch.frame.size = CGSize(width: dialogViewWidth - 16, height: 40)
animatedSwitch.setProgressRangeForOnState(fromProgress: 0.5, toProgress: 1)
animatedSwitch.setProgressRangeForOffState(fromProgress: 0, toProgress: 0.5)
animatedSwitch.contentMode = .scaleAspectFill
animatedSwitch.clipsToBounds = true
animatedSwitch.backgroundColor = .purple
The problem was with the file I downloaded from LottieFiles. To fix the animation/icon from being small, I scaled the composition size in adobe after effects to fit the preview frame. I exported the .aeb file to .json using the bodymovin plugin.
Hardik's answer was also helpful. The problem was simply that the file I downloaded had a lot of empty space around the actual icon until I scaled the picture up.
Try this code i am not sure this will help in your case
let animatedSwitch = LOTAnimatedSwitch(named: "toggle_switch")
animatedSwitch.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
animatedSwitch.center = self.view.center
animatedSwitch.setProgressRangeForOnState(fromProgress: 0.5, toProgress: 1)
animatedSwitch.setProgressRangeForOffState(fromProgress: 0, toProgress: 0.5)
animatedSwitch.contentMode = .scaleAspectFit
self.view.addSubview(animatedSwitch)
self.view.backgroundColor = UIColor.lightGray
animationView = .init(name: "lf30_editor_fip4qqkq")
animationView!.frame = CGRect(x: 0, y: 0, width: 150, height: 150)
animationView!.center = self.view.center
animationView!.contentMode = .scaleAspectFit
animationView!.loopMode = .loop
animationView!.animationSpeed = 1.0
view.addSubview(animationView!)
animationView!.play()
I had this issue too. I modified the animation view's width and height to my desired size and changed the content mode to scale aspect fill. If you wanted to make the animation larger, just update your width and height. Here's example code.
animationView.animation = Animation.named("loading")
animationView.frame = CGRect(x: 0, y: 0, width: 100, height: 100)
animationView.contentMode = .scaleAspectFill
animationView.loopMode = .loop
animationView.play()
Related
In my Swift app i have inserted an image like this:
let ImageNavig = "5.jpg"
let image1 = UIImage(named: ImageNavig)
let image1View = UIImageView(image: image1!)
let yCenter1 = self.view.center.y
let Image1Size = CGPoint(x: 420, y: 240)
image1View.frame = CGRect(x: 0, y: -10, width: Image1Size.x, height: Image1Size.y)
view.addSubview(image1View)
but, when I run the project with older Iphone the results is this:
how can I insert autolayout programmatically without storyboard?
If you have issue of image width in old iphones then it is because, you have given fix width to the image , use below code it will take width dynamically as per iphone width
let Image1Size = CGPoint(x: self.view.frame.width, y: 240)
instead of
let Image1Size = CGPoint(x: 420, y: 240)
I have a text view and I am attempting to add a line underneath it. I am trying to accomplish this with a CALayer, however it is not showing up in the textView. I would appreciate it if someone could help me. The code is below.
let border = CALayer()
border.backgroundColor = UIColor(hexString: "#CC0000").cgColor
border.frame = CGRect(x: 0, y: messageField.frame.height - 3, width: messageField.frame.width, height: 3)
messageField.layer.addSublayer(border)
In my test app, I just tried this:
let messageField = UITextView(frame: CGRect(x: 30, y: 40, width: view.frame.width - 60, height: 40))
var border = CALayer()
border.backgroundColor = UIColor.red.cgColor
border.frame = CGRect(x: 0, y: messageField.frame.height - 3, width: messageField.frame.width, height: 3)
messageField.layer.addSublayer(border)
view.addSubview(messageField)
And it worked fine. Weird but fine. The color showed up no problem, but it scrolls along with the text view. But that might be what you want. I tried it with different heights for the message field too. I couldn't get it to not show.
If you want it to work and have the line not scroll with the text, try this answer: https://stackoverflow.com/a/38327895/793607
I am trying to add a UIImage to the UICollectionViewController by using the following code:
let backgroundImage = UIImageView(frame: CGRect(x: 0, y: 0, width: 430, height: 550))
backgroundImage.image = UIImage(named: "fantasy_football_hero_tile_cropped.png")
backgroundImage.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImage.clipsToBounds = true
self.view.insertSubview(backgroundImage, at: 0)
My issue is that the image is not at the bottom/lowest part of the screen which is what I am trying to achieve... how can I clip it to the bottom?! I am not using story board, can I programmatically anchor the image to the bottom as I could do in a storyboard?
This is especially true since the screen sizes for the phones are different, but the desire is still to have it anchored to the bottom.
you can add programatically. I think you add/insert some views to the self.view that will also affect simple scenario
let backgroundImageV = UIView(frame: CGRect(x: 0, y: 0, width: 430, height: 500))
backgroundImageV.backgroundColor = UIColor.blue
backgroundImageV.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImageV.clipsToBounds = true
self.view.addSubview(backgroundImageV)
let backgroundImageV2 = UIView(frame: CGRect(x: 0, y: 0, width: 430, height: 510))
backgroundImageV2.backgroundColor = UIColor.green
backgroundImageV2.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImageV2.clipsToBounds = true
self.view.insertSubview(backgroundImageV2, at: 0)
let backgroundImage = UIImageView(frame: CGRect(x: 0, y: 0, width: 430, height: 550))
backgroundImage.backgroundColor = UIColor.red
backgroundImage.contentMode = UIView.ContentMode.scaleAspectFit
backgroundImage.clipsToBounds = true
self.view.insertSubview(backgroundImage, at: 0)
Here Red will be bottom Green will be in 1. because you add that red colored view later. So It will work. Can you please show your full code. It will work
One problem here is that self.view for a UICollectionViewController is the UICollectionView. This is a scroll view, so no matter where you put this image view, it is going to move when the scroll view scrolls.
If that isn't what you want, there is a simple solution: set the image view as the collection view's backgroundView. That is a stationary view that forms the background to the collection view no matter how it is scrolled. If you set the image view's contentMode to bottom the image will be centered at the bottom, which seems to be what you are after.
Could someone explain me the difference between these two pictures please?
Code with preview of the UIView:
Code without the preview of the UIView:
What's the difference? And why can't I get a preview on the second code example? It only shows "empty image"....
Thanks for helping me.
This seems to be a "feature" (bug) of a Swift playground. If you don't create the view instance using a non-zero frame width and height, you will get "empty image".
This works:
let rect = UIView(frame: CGRect(x: 0, y: 0, width: 1, height: 1))
rect.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
rect.backgroundColor = .green
But this doesn't:
let rect = UIView(frame: .zero)
// also bad: let rect = UIView(frame: CGRect(x: 0, y: 0, width: 1, height: 0))
rect.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
rect.backgroundColor = .green
And remember that:
let rect = UIView()
is essentially the same as doing:
let rect = UIView(frame: .zero)
So when using a playground, create a view with a non-zero frame width and height in the initializer if you don't want to see "empty image".
I'm trying to put a simple text label onto one (hopefully all types) of built in SCNGeometry shapes as they move across the screen. The closest I have come to success is adding a CALayer with CATextLayer to a SCNBox via .firstMaterial.diffuse.contents, as described in this thread.
BUT, the text is never readable. With a SCNBox of height 1.0: when the size of the layer.frame and textLayer.fontSize is 1.0, the text does not appear; as the frame and font size increase (not the box) the text appears blotchy, like in the image below; and when very large, the text appears as squiggly lines.
The following code is part of the method that spawns shapes:
var geometry:SCNGeometry
let layer = CALayer()
layer.frame = CGRect(x: 0, y: 0, width: 4, height: 4)
layer.backgroundColor = UIColor.white.cgColor
var textLayer = CATextLayer()
textLayer.frame = layer.bounds
textLayer.fontSize = layer.bounds.size.height
textLayer.string = "Matilda"
textLayer.alignmentMode = kCAAlignmentLeft
textLayer.foregroundColor = UIColor.black.cgColor
textLayer.display()
layer.addSublayer(textLayer)
let geometry = SCNBox(width: 1.0,
height: 1.0,
length: 3.0,
chamferRadius: 0.0)
geometry.firstMaterial?.locksAmbientWithDiffuse = true
geometry.firstMaterial?.diffuse.contents = layer
let geometryNode = SCNNode(geometry: geometry)
geometryNode.position = SCNVector3(x: 0.0, y: 0.0, z: 0.0)
scnScene.rootNode.addChildNode(geometryNode)
As pointed out by David R., the units of the box size is not the same as the units of the frame size.
It worked after adjusting the frame to (and optimising SCNBox size):
layer.frame = CGRect(x: 0, y: 0, width: 200, height: 50)