I just need help with interface builder. I am trying to rotate only a label for my apps but I can't find the rotate function any where..
Can anyone help me to rotate a label, do I need code in xcode to rotate it?
In Swift 4, add the following code to your View Controller:
#IBDesignable
class DesignableLabel: UILabel {
}
extension UIView {
#IBInspectable
var rotation: Int {
get {
return 0
} set {
let radians = ((CGFloat.pi) * CGFloat(newValue) / CGFloat(180.0))
self.transform = CGAffineTransform(rotationAngle: radians)
}
}
}
Then in interface builder, change your label class type in the Identity Inspector to "DesignableLabel". Your label should then be rotatable in interface builder.
I don't think you can rotate it in IB. You need to appy a transform to the view to get it to rotate.
view.transform = CGAffineTransformMakeRotation(3.14/2);
Related
I have used Animation() method to make my view with the animation of scaling and Rotation. With the Rotation based on the Y axis, the default height and width of my view has been changed. It looks like the parallelogram.
rotation of rectangle along y-axis transformed to a parallelogram.
myview.Animate().RotationY(rotationangle)
.X(xposition)
.SetDuration(mduration)
.WithLayer()
.SetInterpolator(interpolate).Start();
My requirement:
I just want the rotation of my view no need to change its projection. How to restrict the rotation of rectangle along y-axis transformed to a parallelogram.
For more reference, please check the attached sample
now view be like,
Image
Please share your idea.
Thanks in Advance.
Note: while using PivotX and PivotY, there is no parallelogram shape. But I don't know the exact usage of that.
Regards,
Hemalatha Marikumar
is that not what are you looking for ?
it may work if you put this code in your current activity
Android: Temporarily disable orientation changes in an Activity
Do you want to create a 2D rotation?
You could try to use ScaleAnimation to rotate the view. If you want to rotate 360 degrees, you could use AnimationListener.
For example:
Button myview = (Button)FindViewById(Resource.Id.button2);
ScaleAnimation scaleAnimation = new ScaleAnimation(1, 0, 1, 1,
Android.Views.Animations.Dimension.RelativeToParent, 0.5f, Android.Views.Animations.Dimension.RelativeToParent, 0.5f);
ScaleAnimation scaleAnimation2 = new ScaleAnimation(0, 1, 1, 1,
Android.Views.Animations.Dimension.RelativeToParent, 0.5f, Android.Views.Animations.Dimension.RelativeToParent, 0.5f);
scaleAnimation.Duration = 4000;
scaleAnimation.SetAnimationListener(new AnimationListener(myview, scaleAnimation2));
scaleAnimation2.Duration = 4000;
myview.StartAnimation(scaleAnimation);
The Listener:
public class AnimationListener :Java.Lang.Object, IAnimationListener
{
View view;
Animation animation2;
public AnimationListener(View view, Animation animation)
{
this.view = view;
this.animation2 = animation;
}
public void OnAnimationEnd(Animation animation)
{
view.StartAnimation(animation2);
}
public void OnAnimationRepeat(Animation animation)
{
}
public void OnAnimationStart(Animation animation)
{
}
}
I am trying to have a zoom animation run on a layer-backed NSView by animating the transform of the backing layer. The issue I am having with this, is that the animation zooms into the bottom left corner instead of the center of the view. I figured out that this is because NSView sets its backing layer's anchor point to (0, 0), even after I change it to some other value. This post talks about a similar issue.
I know that to get around this, I could make the view a layer-hosting view. However, I would like to use auto layout, which is why that is not really an option.
Does anyone know another way to get around this behavior and keep the anchor point of the view's backing layer at (0.5, 0.5)? The excerpt from apple's documentation in the post I linked above talks about NSView cover methods. What could such cover method be for the anchor point?
Thanks a lot!
The trick is to override the backing layer and pass an anchor point of choice (to be able to zoom from top left, for instance). Here's what I use:
extension CGPoint {
static let topLeftAnchor: Self = .init(x: 0.0, y: 1.0)
static let bottomLeftAnchor: Self = .init(x: 0.0, y: 0.0)
static let topRightAnchor: Self = .init(x: 1.0, y: 1.0)
static let bottomRightAnchor: Self = .init(x: 1.0, y: 0.0)
static let centerAnchor: Self = .init(x: 0.5, y: 0.5)
}
class AnchoredLayer: CALayer {
public var customAnchorPoint = CGPoint.topLeftAnchor
override var anchorPoint: CGPoint {
get { customAnchorPoint }
set { super.anchorPoint = customAnchorPoint }
}
}
class AnchoredView: NSView {
required convenience init(anchoredTo point: CGPoint) {
self.init(frame: .zero)
self.wantsLayer = true
self.anchorPoint = point
}
public override func makeBackingLayer() -> CALayer {
let roundedLayer = AnchoredLayer()
return roundedLayer
}
public var anchorPoint: CGPoint {
get { (layer as! AnchoredLayer).customAnchorPoint }
set { (layer as! AnchoredLayer).customAnchorPoint = newValue }
}
}
Then use AnchoredView as normal:
let myView = AnchoredView(anchoredTo: .topLeftAnchor)
// Create the scale animation
let transformScaleXyAnimation = CASpringAnimation()
transformScaleXyAnimation.fillMode = .forwards
transformScaleXyAnimation.keyPath = "transform.scale.xy"
transformScaleXyAnimation.toValue = 1
transformScaleXyAnimation.fromValue = 0.8
transformScaleXyAnimation.stiffness = 300
transformScaleXyAnimation.damping = 55
transformScaleXyAnimation.mass = 0.8
transformScaleXyAnimation.initialVelocity = 4
transformScaleXyAnimation.duration = transformScaleXyAnimation.settlingDuration
myView.layer?.add(transformScaleXyAnimation, forKey: "transformScaleXyAnimation")
...
I have been trying to create a circular image but for some reason it has been outputting as a diamond. This is my code:
override func viewDidLoad() {
displayEmailFullNameImage()
self.editProfilePictureImage.layer.cornerRadius = editProfilePictureImage.frame.size.width / 2
self.editProfilePictureImage.clipsToBounds = true
self.editProfilePictureImage.contentMode = .scaleAspectFill
}
My Constraints on the photo:
I have tried the following solution:
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
profilePic.layer.cornerRadius = profilePic.frame.width / 2
profilePic.clipsToBounds = true
}
BUT this does not work either.
This is how the image looks:
Any help would be appreciated.
Your problem it is probably caused by some constraints you have added to your imageView. Try adding only 4 constraints, 1 for fixed width, 1 for fixed height, 1 for leading space and 1 for top space as you can see at the screenshot below:
The issue is that viewWillLayoutSubviews is too early in the layout process. You can do it in viewDidLayoutSubviews.
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
profilePic.layer.cornerRadius = min(profilePic.frame.width, profilePic.frame.height) / 2
profilePic.clipsToBounds = true
}
Or, alternatively, you can use a designable view, and let the view take care of it:
#IBDesignable class RoundedImageView: UIImageView {
override func layoutSubviews() {
super.layoutSubviews()
layer.cornerRadius = min(bounds.width, bounds.height) / 2
}
}
And by making it designable, you can see it rendered with rounded corners right in Interface Builder.
I had the same problem but because I had copied and pasted the cell from another view, the cell class was giving it instructions meant for another cell.
There're lot of Watch apps which has rounded corners for their WKInterfaceImages. I'm trying to round even some WKInterfaceImages in my test app but I can't understand how to do that.
I can't work with imageView.layer. ... as with normal iPhone apps and I can't find an alternative to do that using code or storyboard.
Do I have to mask all PNGs or there's a simpler way?
I solved removing the WKInterfaceImage from storyboard then replacing it with an WKInterfaceGroup which I set with same sizes of previous Image then, from attribute inspector, I setted his radius (yes, with groups it's possible!) then I declared group in controller and setted the image using row.flagView.setBackgroundImageNamed(imageName).
You are right CALayer and UIView are not directly available on watchOS 2. But you are able to use graphic functions and for instance this approach is perfectly acceptable on Watch.
The analogue in Swift:
class ImageTools {
class func imageWithRoundedCornerSize(cornerRadius:CGFloat, usingImage original: UIImage) -> UIImage {
let frame = CGRectMake(0, 0, original.size.width, original.size.height)
// Begin a new image that will be the new image with the rounded corners
UIGraphicsBeginImageContextWithOptions(original.size, false, 1.0)
// Add a clip before drawing anything, in the shape of an rounded rect
UIBezierPath(roundedRect: frame, cornerRadius: cornerRadius).addClip()
// Draw the new image
original.drawInRect(frame)
// Get the new image
let roundedImage = UIGraphicsGetImageFromCurrentImageContext()
// Lets forget about that we were drawing
UIGraphicsEndImageContext()
return roundedImage
}
}
Somewhere in your WKInterfaceController class:
let originalImage = UIImage(named: "original-image")!
let roundedImage = ImageTools.imageWithRoundedCornerSize(60, usingImage: originalImage)
// Set `UIImage` for your `WKInterfaceImage`
imageOutlet.setImage(roundedImage)
This is driving me nutty. I added a new framework and added a UIImageView subclass to be part of it. I then created a UITableViewCell, made it an instance of my custom UIImageView and set its exposed corner radius to 5.
In my subclass I just have:
#IBDesignable class MediaPostCellImageView: UIImageView {
#IBInspectable var cornerRadius: CGFloat = 3.0 {
didSet {
self.layer.cornerRadius = cornerRadius
}
}
}
Here's an example project showing it: http://cl.ly/3Z053m1O3C0i
Why is this not showing it in Interface Builder?
You need to set layer.masksToBounds property to true.
Also, if you still can't see the rounded corner, try to change the background colour, just in case it actually has rounded corners but you can't see it because the colours are the same with the superview.
#IBInspectable var cornerRadius: CGFloat {
get { layer.cornerRadius }
set {
layer.cornerRadius = newValue
if newValue > 0 {
layer.masksToBounds = true
}
}
}
You can use something like this in the extension. Once the new value is set for the corner radius and it's greater than 0, layer.maskToBounds is set to true.