Creating a color hue like snapchat

Asked Oct 09 '15 at 11:28

Active Oct 09 '15 at 11:28

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I want to create a color hue in swift. I researched the allover stackoverflow, I found some examples but they are have 3-4 bars for color pick. I want to create a color picker have one bar. Like snapchat. You can see in the screenshot:

How can I create a bar like this? I am not asking full code. You can give me a roadmap or little example code etc.

asked Oct 09 '15 at 11:28

Tolgay Toklar

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If you are looking for an easy way it could be done by drawing UIView subviews in the main UIView with color backgrounds and value of rgb varying proportionality with y value of subviews frame – channi Oct 09 '15 at 11:33
You can make an image only needs to be 1px in width in photoshop or something. – Arbitur Oct 09 '15 at 11:37
@Arbitur Can you explain more? – Tolgay Toklar Oct 09 '15 at 11:38
make the colored image in photoshop – Arbitur Oct 09 '15 at 11:38
Then how can I pick color from this image? – Tolgay Toklar Oct 09 '15 at 11:39
You can get color rgba from a point in an image – Arbitur Oct 09 '15 at 11:40
Hmm, thank you I will research this – Tolgay Toklar Oct 09 '15 at 11:40
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http://stackoverflow.com/questions/448125/how-to-get-pixel-data-from-a-uiimage-cocoa-touch-or-cgimage-core-graphics Think this will help you. – Arbitur Oct 09 '15 at 11:41

Creating a color hue like snapchat

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