Check if tintColor is dimmed in tintColorDidChange

cocoa-touch, ios, uiview

Solution

Have a look at the `UIView tintAdjustmentMode` property. Something like this (in your custom control class):

- (void)tintColorDidChange {
    BOOL isInactive = self.tintAdjustmentMode == UIViewTintAdjustmentModeDimmed;
    if (isInactive) {
        // modify subviews to look disabled
    } else {
        // modify subviews to look enabled
    }
}

Of course this code must only be run under iOS 7.0 or later.

Problem

On iOS 7, when the tint color changes (for example, when a UIAlertView is presented), views are notified in their `tintColorDidChange` method. I have a few subviews for which I'd like to provide a customized disabled state. (For example, say I'd like to also temporarily dim the `backgroundColor` of a custom UIControl.) I had been using this code: ``` - (void)tintColorDidChange { BOOL isInactive = (CGColorSpaceGetModel(CGColorGetColorSpace([self.tintColor CGColor])) == kCGColorSpaceModelMonochrome); if (isInactive) { // modify subviews to look disabled } else { // modify subviews to look enabled } } ``` However, on some views in one of my apps, the active tint color is a very dark gray, and the inactive tint color is a lighter gray. In this case, both colors report as "inactive" because both colors are monochrome. Is there a better test to determine if the current state is active or dimmed?

Original source