How do I change the text color of UIPickerView with multiple components in Swift? Below code will change the font colour of the picker view of all 3 components. However, it crash when I try to spin the wheel. I think it has to do with the didSelectRow function...
For those who are committed to using UILabel instead of CATextLayer I have found that it is possible to get smoothly aliased text by creating a label with a large font size, scaling it down to 0.25 or similar, and then scaling it back up to 1, like the following: let duration: TimeIn...
let image = UIImage(named: "Swift")?.withRenderingMode(.alwaysTemplate)I have written about image rendering mode in What is image rendering mode in iOS. I recommend you read it if you aren't aware of an image rendering mode.To apply a color to a template image, you set a property ...
Currently, I use an ObservedObservable to change the view (green square) via the sidebarmenu. What is the best approach to the toolbar part? I was thinking that maybe within the child view e.g. SampleMap1, it has a custom menu item view variable which will be shown in the parent vie...
Although SwiftUI does a good job of providing many of UIKit’s UIView subclasses, it doesn’t have them all yet at this time. Fortunately, it’s not hard to create custom wrappers for a UIView that you want.As an example, let’s create a simple SwiftUI wrapper for UITextView as the...
let swiftColor = UIColor(red: 1, green: 165/255, blue: 0, alpha: 1) There are a few things to note here. First of all, what is alpha? Alpha is simply a measurement of how opaque something is. These colors can be made completely transparent with an alpha value of 0, or completel...
Your first iOS App in Swiftfor some help on project setup and Auto Layout if you want a bit more information. The Attributes Inspector has a lot of options that you can change for your UITextField if you wish. We aren’t going to change any of them today, but if you are curious, ...
Custom color in code UIColor has new init methodinit(dynamicProvider:)to create a color object whose component values change based on the currently active traits The trait collection to use when generating the color information. Always use the traits in this collection, and not the traits of th...
Your user interface, or UI, is the visual side of your app. The UI includes color schemes, icons and fonts, and the layout of each app screen. Start with a rough sketch. It doesn’t need to be something that would hang in the Louvre. You just need an idea of how it’s laid out...
Otherwise, if there has been a change between the old and new data, we overwrite our old data with the new data and send it back. If no data is returned from our request, we immediately terminate the iterator by sending back nil. This is important: once our iterator ends, any further...