Check the corner radius of an iPhone / iPad display.
Implementation
Adds a displayCornerRadius property to UIScreen, which reads the private _displayCornerRadius. The selector somewhat obscured, which usually means it will get past app review. However, use at your own risk!
Why didn’t you hardcode the values instead?
I didn’t want to use model identifiers (i.e., iPhone10,2) and miss an international variant, or have to update it when new devices launch.
It’s also tricky to use screen resolutions, as multiple devices share the same resolution and scale with different corner radii. Display Zoom messes with this too, and ultimately it just seems like a bad idea to assume anything about the device based on the display resolution.
How to use
iOS device displays use a continious corner curve, which means the corners are not true circles. In iOS 13+ you can use CALayer.cornerCurve to specify a continuous corner curve. You might create a view subclass like this:
Or perhaps you want to animate from a different corner radius to the screen one. Either way, be sure to set layer.cornerCurve = .continuous on the view.
Values reported
The following values were reported for various devices with rounded corners:
ScreenCorners
Check the corner radius of an iPhone / iPad display.
Implementation
Adds a
displayCornerRadiusproperty toUIScreen, which reads the private_displayCornerRadius. The selector somewhat obscured, which usually means it will get past app review. However, use at your own risk!Why didn’t you hardcode the values instead?
I didn’t want to use model identifiers (i.e.,
iPhone10,2) and miss an international variant, or have to update it when new devices launch.It’s also tricky to use screen resolutions, as multiple devices share the same resolution and scale with different corner radii. Display Zoom messes with this too, and ultimately it just seems like a bad idea to assume anything about the device based on the display resolution.
How to use
iOS device displays use a continious corner curve, which means the corners are not true circles. In iOS 13+ you can use
CALayer.cornerCurveto specify a continuous corner curve. You might create a view subclass like this:Or perhaps you want to animate from a different corner radius to the screen one. Either way, be sure to set
layer.cornerCurve = .continuouson the view.Values reported
The following values were reported for various devices with rounded corners: