iphone - Create adjusted image similar to UIButton's adjustsImageWhenHighlighted effect -

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iphone - Create adjusted image similar to UIButton's adjustsImageWhenHighlighted effect -

i'm working info icons in table view. , icons in disabled state. want seek create grayed versions of icons programmatically, before inquire designer me. similar adjustment happens in uibutton when image auto-adjusted highlighted state. know how image adjustment?

what modifying alpha of icons?

if create images partly transparent you'll similar effect , no programming needed.

another possibility add together partially transparent grayness uiimageview on button. button made gray-looking -- you'll need uiimageview have alpha of .2, or somewhere in range.

iphone ios cocoa-touch uikit core-graphics

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