Android activity restart and Preference screen

Question

I have an application with a MainActivity and few other activites. From the MainActivity I start a preference screen, where I set theme for my application.

MainActivity-> Settings->Choose Theme

Currently how it works:

I restart the application, start my Main activity and theme is applied to all the activites.

How I want it to work:

I want to restart the application and go back to the same screen where I set my Theme and not my MainActivity.

Can anyone please suggest me some ways in which I can do it?

Thank you in advance

EDIT:

How I want it to work:

Restart the application -> Go back to the "Choose Theme" Screen (Where it is set) .

Then when I press back button -> Settings screen -> and when pressed back again to my MainActivity.

Answer 1

我不知道这是否是最好的方法，但是您可以将您所在的最后一个屏幕保存在SharedPreferences中（或者只是为了这种情况，一个布尔值来知道您是否来自重启），并且每次应用程序从MainActivity onCreate()启动，检查SharedPreferences的键，并相应地转到您的Themes活动