how to change the Label/TextField text color Based on background image color in iOS Objective-C?

Question

I'm working on UIImageView with Labels and TextFields. In my scenario, how can I change the label text color based on background image?

For Example : My Background image white, in that scenario the label text color is black or red except white.

Please help me. Thanks in Advance.

Answer 1

Just engineering of answers found online:

1. Calculate average color for your background image: how to find average color of image

2. Calculate an inverted color for the found color: inverting a UIColor

3. Set label.textColor to a result color