Android: Add Pause / Unpause Emulation Toggle

[Ebola16]

Implements https://bugs.dolphin-emu.org/issues/10602 and should survive orientation changes.

• Confirm fragment_ingame_menu.xml changes for Android TV work.

[Ebola16]

Reminder to update EmulationFragment conditions if #8833 is merged first (or vice versa).

[sepalani]

LGTM, tested on ASUS RoG Phone II. I don't have an Android TV so I didn't test the leanback part. Otherwise, the pause/play buttons work even after resuming the dolphin app or rotating the screen.

[JosJuice]

Code LGTM.

[Ebola16]

Something went wrong while testing. Looking into it now.

[Ebola16]

@JosJuice passing activity to EmulationState didn't seem to work after orientation changes and EmulationState has a static inner class so I think it would be best to go with the static variable here. Tested.

[JosJuice]

I did a little hacking to make my phone run the code paths intended for Android TV, and the code did not work. mPauseEmulationTv and mUnpauseEmulationTv get set to null in onCreateOptionsMenu, so you get a NullPointerException when you try to pause.

I don't believe any MenuFragment has been created at the point onCreateOptionsMenu runs. Perhaps it would be better to put the findViewById calls in MenuFragment.onCreateView. Or maybe you could use the approach I suggested earlier, but only for the Android TV menu.

You can use my branch at https://github.com/JosJuice/dolphin/tree/android-menu-back if you want to test in the way I tested. Make sure to edit the TvUtil.isLeanback checks added in your code.

[Ebola16]

@JosJuice Thanks! That helped and I think I got it working on Android TV but I still can't truly test it since I can't initialize OGL on the Android Emulator. Another check would be appreciated. Marking this as working on Android TV.