Android P DP4 supports Dark theme
Google has previously launched a dark theme for some devices, but it automatically switches by wallpaper, but Google has promised to allow users to change manually.
With the release of the Android P DP4 preview, this feature released; users can choose light or dark theme or automatic select by wallpaper.
By default, the system still adapts automatically according to the color depth of the wallpaper. If you don’t like it, you can switch between the advanced settings.
The specific setting method is as follows: Settings – Display – Advanced – Device theme, after setting is successful, such as setting items and notification interface, etc. become black theme.