Conditional splash screen theme styling

Question

The recommended method of creating a splash screen while the app loads is to specify a theme in the manifest for the launch activity that uses a layer-list as a window background.

How can this method be extended to support multiple user themes (e.g. light, dark, pink, etc.) so that the splash screen background can be the appopriate colour?

I have attempted using styled attributes ?backgroundColour but the correct style isn't set when the initial themeing occurs. I have also tried overriding getTheme() in the launch activity but it receives the call after the splash screen is already displayed.

Is this possible to do in Android?

Can't you just have a different drawable for the night scenario? — Henry Twist
@HenryTwist Yeah that works for system themes but not for user themes — Prof
@HenryTwist A theme set by the user and saved in the SharedPreferences. Normally, without the splash screen, this theme would be selected before setContentView — Prof

Berkay Turancı Berkay Turancı · Accepted Answer · 2021-04-02T19:20:27

What you can do is to use initial activity with a background that use a color depends on the dark and light mode.

If you want to make your activity look like a splash screen you can use the following code;

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    getWindow().getDecorView().setSystemUiVisibility(
            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
    super.onCreate(savedInstanceState);

    // Where this layout uses the icon on the center with a dynamic background color
    setContentView(R.layout.activity_start);

    // This is where you set theme colors to the status bars, etc.
    UtilTheme.changeThemeColors(TAB_COLOR_START, null, this);

    // Your logic
}

Conditional splash screen theme styling

1 Answers