I’m trying to figure out how to turn on the new dark mode on the Xcode simulator. As far as I know it turns on by itself on real devices when it’s dark. Is there a way to trigger this on the simulator?
If using an Android Emulator, you can run adb shell "cmd uimode night yes" to enable dark mode, and adb shell "cmd uimode night no" to disable dark mode. If using a real device or an Android Emulator, you can toggle the system dark mode setting in the device's settings.
iOS Simulator can toggle between light and dark mode with ⌘ - command + ⇧ - shift + a shortcut.
Enable developer options and USB debugging To enable developer options, tap the Build Number option 7 times. You can find this option in one of the following locations, depending on your Android version: Android 9 (API level 28) and higher: Settings > About Phone > Build Number. Android 8.0.
There are two ways to activate the dark mode in Xcode 11. Both require you manual steps and are not automatic depending on the time.
1. Environment Overrides
The preferred one is to use the Environment Overrides inside Xcode. When running the App on the simulator in Xcode appears a button in the debugger controls next to 'Debug Memory Graph' and 'Simulate Location'. There you will find a menu for enabling dark mode, as well as choose text size and other accessibility settings.
2. Simulator Settings
Alternatively you can go inside the Settings App on the simulator:
Settings > Developer > Dark Appearance
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