Swift Color Picker Example is a single view application that provides developers an example of how to display a color picker view over the primary view requiring use of such tool. The code is simple and has been implemented in a way that users should be able to review the code and implement in their own projects in their own ways.
Whether it matters to you, the reader, or not this is pretty rough. I have implemented it as a demonstration of the ease and potential of use. I will tidy up at some point.
I put this together to keep for future use in other projects and wanted to share. I also implemented a circular palette with animation which can be used with menus or other things.
If you want to make some changes or improve, please create it on a separate branch and submit a Pull Request. Any issues, raise one.
This view contains pixelation set to a default value of thirty. It can be adjusted to smaller or larger as required. Using UILongPressGestureRecognizer to detect touches at a CGPoint which is mapped to the color at that point.
It's really simple to create the color picker if you include the ColorPicker.swift file.
// Create a Frame
let rect = CGRect(x: 0, y: 0 , width: viewWidth! , height: viewHeight!)
// Create the color view
let colorview = HSBColorPicker.init(frame: rect)
// Set the delegate
colorview.delegate = self
// Add to the view
self.view.addSubview(colorview)This is nice and simple! You can change the pixel size after you created the color picker.
// Set the pixel size of the picker
colorview.setElementSize(pixelSize: 4.0)Adjust the value to be smaller or greater. That's it!
I discovered this code at this answer to solve the issue: Simple swift color picker popover (iOS) so head over and give some love if my demo app helps.
If you noticed in the gif, the button changes font and border color. This is thanks to an extension I have used to detect whether the background color is light or dark.
I discovered this code at this answer to solve the issue: Check if UIColor is dark or bright?
It returns a boolean which details whether the color is currently light or dark. In my own code I have a simple if statement that returns white or black to set the color of the button text and border.
Copyright © 2017 Sean Smith. All rights reserved.
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I hope this demo helps, there are a few around but I found this method the most dynamic and easy to implement.