How to change a solid color from a PNG without affect transparency?

Asked Jun 05 '14 at 19:58

Active Jun 05 '14 at 20:01

Viewed 78 times

This is a great answere ios: change the colors of a UIImage

Here is the call method i trying to use:

NSMutableArray *newColors = [NSMutableArray arrayWithObjects: @"0", @"0", @"0", @"0", @"0", @"0", nil];

imgObject001.image = [UIImage changeColorTo:newColors Transparent:imgObject001.image];

But it only works with solid color. And this image with transparency, when setted, got no size at all, and I get error

"CGContextDrawImage: invalid context 0x0".

How can I change the color on this PNG with transparency (without affecting the transparency)?

By the way, why the transparent image, begins without size? ( bonus answer hehehe )

edited May 23 '17 at 12:11

Community

asked Jun 05 '14 at 19:58

Daniel Arantes Loverde

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Please share the implementation of your -changeColorTo:Transparent: method—that’s not a standard part of UIKit. – Noah Witherspoon Jun 05 '14 at 20:42
`-ChangeColorTo:Transparent:` is in the answer lined at the top of the question. – BojanG Jun 05 '14 at 20:52
@BojanG You answer Noah Witherspoon ?? Is that ?? – Daniel Arantes Loverde Jun 06 '14 at 12:27

How to change a solid color from a PNG without affect transparency?

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