I want to disable dark mode within my app for iOS 13. And I prefer not to do so via info.plist. The reason is, plist uses a global setting, making UIUserInterfaceStyle affects earlier iOS versions aswell (creating conflicts). I only want to set it to light for iOS 13! This is my current code within my AppDelegate:
if(#available(iOS 13, *)){
window.overrideUserInterfaceStyle = UIUserInterfaceStyleLight;
}
This code snippet works for fixing statusBar color to light. But general strings within the app are still in "dark mode". Earlier white strings turn into black, and my app is already pretty dark as it is. How do I fix so strings in the app does not change it's colors by themselves in dark mode? I want a global code snippet and not go through every ViewController...
Regards
iOS ignores Info.plist keys it doesn't know. So you can safely set UIUserInterfaceStyle to Light in your Info.plist, iOS prior to version 13 will ignore this key.
Fixed the problem by calling:
self.window.overrideUserInterfaceStyle = UIUserInterfaceStyleLight;
Related
So I just want my app to always run in dark mode. Even if the device appearance in in Light I still want the app to run in dark mode. Is this possible?
Yes, It's possible, You must Add "Appearance" key to "Dark" in Info.plist such as:
You can set UIUserInterfaceStyle to Dark in your Info.plist as explained in Is it possible to opt-out of dark mode on iOS 13?
In my iOS/macOS app the user can choose between a light and a dark appearance.
This is done by setting the overrideUserInterfaceStyle of the app window, for example
window.overrideUserInterfaceStyle = .dark
It works fine on iOS/iPadOS.
On macOS (Catalyst) the app uses an NSToolbar, which always appears in the mode chosen in the system settings, regardless what ist set for the overrideUserInterfaceStyle of the window (see screenshot).
Since this is not a good visual impression, I would like to know how I can set light/dark mode for the NSToolbar too.
Add UIUserInterfaceStyle with a value Dark to your app’s Info.plist. That will force the whole app to dark mode on iOS 13+ and Mac Catalyst (you won’t need to set overrideUserInterfaceStyle).
Docs: https://developer.apple.com/documentation/bundleresources/information_property_list/uiuserinterfacestyle
This can be done by adding an macOS plugin which has access to the whole AppKit API. Instructions can be found here:
How to Access the AppKit API from Mac Catalyst Apps
Then you can set the desired appearance there at runtime, for example:
NSApplication.shared.appearance = NSAppearance(named: .darkAqua)
I have a blue logo on the launchscreen.storyboard on white background.
For the new DarkMode introduced with iOS 13 I like to invert the colors, i.e. blue background and white logo.
As we know this can be done using named colors from the asset catalogues, which change depending on the traits of the device.
This is working totally fine in iOS 11 and up but shows this error when trying to support iOS 10:
Named colors do not work prior to iOS 11.0.
I tried making a view controller for the launchscreen scene in code and set the colors there using the #ifavailable clause, but the compiler says a launchscreen may not have a custom class associated with it.
I also thought of using different launchscreen storyboards depending on the iOS version but I couldn't find anything about how to.
Anything I can do about it?
How to solve this problem?
Thanks,
Felix
As suggested here, the solution is to use a dynamic image for the background instead:
Create 2 images with the flat colors for light and dark mode.
Import them in your Asset Catalog and define the “Any”/“Dark” appearances.
Add a UIImageView in the background of your Launch Screen with this image (“Scale to Fill”, constrained to container).
This will compile even if your deployment target is lower than iOS 11.0, and will display the appropriate color at launch.
I am trying to implement dark mode in my iOS app. I need to use named colors in order to do this, but I've run into a bit of a snag. Everything works fine on the iOS 13 simulator when switching between light and dark mode, and the colors are also correct in the iOS 12 simulator. The problem occurs when I try to run my app on an iOS 11 simulator. Any named colors that I've used in the storyboard default to the dark version of the color, and when I try to access a named color in code I get nil. Just wondering if anyone else has run into this
It's bug in Xcode 11 with IOS 11. Two issues with named colors in IOS 11
UIColor init method init?(named name: String) returns nil in IOS 11
Named color assets used in storyboard or xib files defaults to dark version some times.
Here are workaround for time being until it's fixed in upcoming Xcode release.
If UIColor init method init?(named name: String) returns nil you need to provide fallback color for light mode.
let color = UIColor(named: "myColor") ?? UIColor.black // default color for IOS 11
Named color issue for Story board and xib files, if you observe the changes in your xib file or storyboard after setting any name color you will notice there is a namedColor xml tag under resources tab. And for each namedColor there is fallback color there, that fallback color is being in IOS 11 case because named color isn't working. You can even see the warings in your console.
<resources>
<namedColor name="NavigationBar">
<color red="0.2669999897480011" green="0.70999997854232788" blue="0.046999998390674591" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
</namedColor>
</resources>
Bug in Xcode 11 is that default value is set to dark mode version if your MacOS appearance is set to Dark and it picks light color version for default values if your MacOS appearance is set to Light. Workarounds to fix this for IOS 11.
You can set your MacOS appearance to Light. After that you need to open each and every storyboards or xib files in yours project once. Once you open it, editor will automatically pick the Light version of your colors and you can see in your source control that file is modified and default value will be Light version of your color asset. Note that every time your change any value in your color assets, you have to do this again for all the xib files using that named color.
Second is a bit complicated that your write a script that parse all the xib and storyboard files for your project and update the default RGBA values.
It seems that Apple know of it.
Quote from https://developer.apple.com/ios/submit/
Please note that apps built with Xcode 11 using named colors may
experience lookup failures (with no value returned) when the app runs
on iOS 11 or earlier. This will be fixed in a future Xcode update. To
avoid this issue, raise the minimum deployment target to iOS 12 or
later to submit to the App Store now, or rebuild with the next Xcode
GM candidate seed when it’s available.
Update 20190917
Build your apps using Xcode 11 GM seed 2, which includes SDKs for iOS
13, iPadOS, watchOS 6, tvOS 12, and macOS Catalina. Starting April,
2020, all iOS apps submitted to the App Store will need to be built
with the iOS 13 SDK or later. They must also support the all-screen
design of iPhone XS Max or the 12.9-inch iPad Pro (3rd generation), or
later.
Seems like problem is on Apple side. Even Xcode 11 GM seed also having this issue. People are discussing this issue on apple developer forums.
https://forums.developer.apple.com/thread/122053
Update Xcode for Version 11.0 (11A420a)
For the ones with this problem and on Storyboards, I recommend on your color-scheme to use the "Any Appearance" default to Light mode.
For example, for dark I have gray background and light its white, the fonts are the opposite, white and darkGray. Default everything to light mode, the IOS will interpret it as light and you won't have issues.
As you can see on my screenshots, my app is working properly on IOS 11.
If I don't do that, probably all my fonts will be white and user won't see anything at all.
I highly recommend adding all your colors in separate assets and any added color can be mapped to the new system colors so it will handle light mode and dark mode colors automatically for iOS 13 and it will take the default color for iOS 12,11,...
also, you can call it in your code using
UIColor(named: "systemBlue") ?? UIColor.blue
I am in the process of updating an app for iOS7 (while still supporting iOS6), and have updated the status bar to use a white foreground using UIStatusBarStyle: UIStatusBarStyleLightContent.
However the UIStatusBarStyleLightContent value is new in iOS7, and so when run on iOS6 the UIStatusBarStyle reverts back to UIStatusBarStyleDefault, giving the light-gray with dark text iOS6 default. But I need my iOS6 version to use the black style UIStatusBarStyleBlackOpaque status bar.
Given you can set info.plist settings for different device and platform types, e.g. UIStatusBarStyle~ipad:
https://developer.apple.com/library/ios/DOCUMENTATION/iPhone/conceptual/iPhoneOSProgrammingGuide/AdvancedAppTricks/AdvancedAppTricks.html
I know I can set the value at runtime via the UIApplication, but this doesn't have an affect until after the startup image has displayed.
I am hoping you can use a similar mechanism for iOS versions? e.g:
UIStatusBarStyle: UIStatusBarStyleBlackOpaque
UIStatusBarStyle~ios7: UIStatusBarStyleLightContent
However that doesn't work and I can't find any apple documentation anywhere on such a feature. Am I out of luck and will have to live with the ugly white status bar during iOS6 app launches?
EDIT: Just found a similar question here: iOS - Entry in Info.plist for only iOS 6 and above?
Seems like the answer is no, this is not possible. Unless there have been any updates with iOS7?
Use this, As i think so, this will be helpful to you,
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
// Load resources for iOS 6.1 or earlier, i.e set status bar here for previous versions
} else {
// Load resources for iOS 7 or later, set status bar here for ios 7
}