Hi, are interested in having a logo for you project? I could send you some ideas if you like.

If you change the video player to a secondary activity and you enter in PictureinPicture mode a new process is created.
This is really easy to reproduce by adding a new activity as MAIN and LAUNCHER with a button that just launches the current MainActivity (with the player) and enter in PiP mode, the Main activity will be left being displayed and you can navigate to other activities (if available).

If you press the video (in PiP mode) twice to open the activity again you will get the two processes.

1. Set night theme before super.onCreate

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);

2. Change activity theme to DayNight

   <style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">

3. After starting app, everything looks fine. But when click "enter pip mode" button, the video is stopped and restarted from the beginning. It seems the whole activity is recreated in the night mode so the playing is discontinued. This doesn't happen in the day mode.

I've observed this bug on emulators and devices using support library or androidX.

I cloned this repo and open it with AS 3.0.1. It failed when gradle sync, error message is:

Error:Failed to find Build Tools revision 26.0.2

Consult IDE log for more details (Help | Show Log)
Install Build Tools 26.0.2 and sync project

I've already have Build Tools 26.0.3, but not install Build Tools 26.0.2.
I know I can click the link to install Build Tools 26.0.2 to solve this problem. But what confuses me is that, I searched the whole repo, and could not find any place particularly write "26.0.2", except the README.md.
Why it need Build Tools 26.0.2 not Build Tools 26.0.3 or else?

App name should be shown instead of "(No title program)".