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ios - Apply filter over UIView/UIWindow to modify underlying view rendering -
i'm trying make "dark mode" app, , i'd in easy way. there way apply filter or create view on other views appear inverted - "accessibility" on ios 3.2+? know core image filters don't work on iphone, that's not big deal me - long there's way apply different sort of filter.
is feasible on iphone? how apple it?
it sounds you're thinking of placing semi-transparent view filled dark color on entire user interface. if that's case, should read forwarding touch events discussion of issues involved.
another way change set of colors , images use draw views.
both these schemes easier , work better if you're dealing custom views. if you're using overlay, document linked above explains standard ui elements don't take kindly event forwarding. if change colors, well... depending on ui elements you're using, may or may not possible substitute own images , colors.
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