Proper way of implementing night mode feature

Question

I know by using AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES); night mode can be implemented in an activity. But what I want is that - there'll be an option in settings for activating night mode in all the activities & fragment in the app. How can I do that?

Answer 1

One way to achieve this:

• When you select the action night mode in setting activity(or any) you can maintain a flag(& save in sharedpreference or any temp storage).

• Check this flag on each and every activity & fragment and if the flag is positive set the night mode as you used,

  AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);