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So I have some UIButtons. They're blue when enabled, and gray when disabled, as I expect.

enter image description here

If I go from my front page to Current Contests and there's a network error like this:

enter image description here

I call [self.navigationController popViewControllerAnimated:YES]; to get back to the main page, and I get this on iOS 7, iPhone 4:

enter image description here

Gray buttons, but they work. So I know they're not disabled. This does not happen on iOS 8, iPad Mini.

Almo
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    Related question: https://stackoverflow.com/questions/21071512/ios7-tint-color-only-works-after-presenting-and-dismissing-another-viewcontrolle – mattsven Mar 14 '15 at 17:24
  • which part, exactly? I'll write it up as an answer for anyone who comes later – mattsven Mar 15 '15 at 15:02
  • self.window.tintAdjustmentMode = UIViewTintAdjustmentModeNormal; Adding this in appdelegate didfinishlaunchingwithoptions fixed it. – Almo Mar 15 '15 at 15:19

1 Answers1

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You can fix this using the tintAdjustmentMode property, introduced in iOS 7:

When this property’s value is UIViewTintAdjustmentModeDimmed, the value of the tintColor property is modified to provide a dimmed appearance.

If the system cannot find a non-default value in the subview hierarchy when you query this property, the value is UIViewTintAdjustmentModeNormal.

When this property’s value changes (either by the view’s value changing or by one of its superview’s values changing), -the system calls the tintColorDidChange method to allow the view to refresh its rendering.

- from the UIView Class Reference.

When certain overlay views such as UIAlertView, etc., become visible, they essentially change this property to UIViewTintAdjustmentModeDimmed. You can fix this by setting the tintAdjustmentMode for the entire UIWindow (and therefore subview hierarchy) with:

self.window.tintAdjustmentMode = UIViewTintAdjustmentModeNormal;
mattsven
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