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Home/ Questions/Q 313969
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Editorial Team
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Editorial Team
Asked: May 12, 20262026-05-12T08:09:25+00:00 2026-05-12T08:09:25+00:00

iPhone Objective C: How to get a pixel’s color of the touched point on

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iPhone Objective C: How to get a pixel’s color of the touched point on an UIImageView, even if the parent UIView or itself is being rotated by the CGAffineTransformMakeRotation function?

Will the view property of the UITouch still correctly return the correct pixel of the touched point even if the UIView/UIImageView is being scaled and rotated?

Many thanks for reading

edited: Thanks for the answer & comments, but sorry I still don’t know how to get the X,Y point of the scaled/rotated image from the touch event, and then extract the color from it. Would anyone mind to help?

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1 Answer

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  1. Editorial Team
    Editorial Team
    2026-05-12T08:09:26+00:00Added an answer on May 12, 2026 at 8:09 am

    A quick google search has revealed some promising leads:

    • Getting Pixel data from a CGImage object
    • Another StackOverflow question
    • What color is my pixel?
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