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Change background color when dark mode turns on in SwiftUI


By : dongyupu
Date : September 13 2020, 08:00 AM
Hope that helps Change the .background(Color.white) to .background(Color(UIColor.systemBackground))
code :


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NSComboBox + Dark Mode. How to change table background color?


By : عبدالله المالكي
Date : March 29 2020, 07:55 AM
This might help you No, there is no way to explicitly change this. NSComboBox is just broken. (Until I filed a bug report and it was fixed in 10.13, they didn't even draw correctly in Graphite mode). File a bug report with Apple.

What is background color code of Message Dark mode


By : user1854785
Date : March 29 2020, 07:55 AM
I hope this helps . Android Message for Android app released Dark Mode feature and I am interested in with it's background color. But I can't know how to find the exactly color code of background (colorPrimary and colorPrimaryDark) of this dark theme. , Title bar color:
hex #202124

(Dark Mode) How do I get the background to change after the "dark-theme" is added?


By : Lietus
Date : March 29 2020, 07:55 AM
To fix the issue you can do You should use #content.dark-theme to correctly target the element you need; here you can see this in action.
In CSS, when you write: #content .dark-theme you are trying to target the element with a class dark-theme that is a child of an element with an id content.
code :
document.getElementById('change-theme-btn').onclick = function() {
  content.classList.toggle('dark-theme');
}
#content {
  background: rgb(248, 201, 201);
  color: black;
  height: 150px;
}

#content.dark-theme {
  background: rgb(49, 51, 71);
  color: white;
}
<div id="content">
  This is content
</div>
<button id="change-theme-btn">Change</button>

Dynamically Change iOS Nav Bar Color (Dark Mode)


By : user3209091
Date : March 29 2020, 07:55 AM
like below fixes the issue I'm trying to implement a toggle for dark mode in my app - this would involve toggling the nav bar color to black when the UIViewController is already visible on the screen. I'm aware of how to do this by setting , Achieved this by making the nav bar translucent (in AppDelegate):
code :
let barAppearance = UINavigationBar.appearance()
barAppearance.titleTextAttributes = [NSAttributedString.Key.foregroundColor: appRed]
barAppearance.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
barAppearance.shadowImage = UIImage()
barAppearance.isTranslucent = true
let coverView = UIView() 
cover.snp.makeConstraints {
        make in
        make.left.right.top.equalTo(self)
        make.bottom.equalTo(self.snp.top).offset(universalNumber(num: parent!.topbarHeight))
}
extension UIViewController {
/**
 *  Height of status bar + navigation bar (if navigation bar exist)
 */
    var topbarHeight: CGFloat {
        return UIApplication.shared.statusBarFrame.size.height +
            (self.navigationController?.navigationBar.frame.height ?? 0.0)
    }
}
coverView.backgroundColor = universalWhite() 
func universalWhite() -> UIColor {
   let defaults = UserDefaults.standard
   let darkMode = defaults.bool(forKey: "darkMode")
   if darkMode {
       return .black
   } else {
       return .white
    }
 }

Objective-C - Change programmatically Gradient Background Color UIViewController When iOS 13 Dark Mode changed


By : user3236234
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , You should implement the traitCollectionDidChange and have it update your background:
code :
- (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection {
    [super traitCollectionDidChange:previousTraitCollection];

    if (@available(iOS 13.0, *)) { // Needed if your app supports iOS 12
        if ([self.traitCollection hasDifferentColorAppearanceComparedToTraitCollection:previousTraitCollection]) {
            [self setupBackground];
        }
    }
}
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