Looks great!

This addition should not interfere with Android 6+'s split screen feature.

I guess this should be Android 7, as that was the version that introduced split screen AFAIK (https://developer.android.com/guide/topics/ui/multi-window.html)?

For my understanding: Does this affect also Samsung devices running Android 7.0 or later (does it change/improve the multiwindow handling on that version, or does Samsung just use the built-in Android multiwindow support as of 7.0+ regardless of the com.sec.android.support.multiwindow meta-data)?

I guess this should be Android 7, as that was the version that introduced split screen AFAIK

Correct, my mistake.

For my understanding: Does this affect also Samsung devices running Android 7.0 or later (does it change/improve the multiwindow handling on that version, or does Samsung just use the built-in Android multiwindow support as of 7.0+ regardless of the com.sec.android.support.multiwindow meta-data)?

I'm confident that Samsung will choose Android 7's multi-window over their own if both are present: http://developer.samsung.com/galaxy/multiwindow

Does anyone have a Samsung device on Android 7 who can confirm?
Here's an APK http://d.pr/f/w2he6z

Just tested on two Samsung tablets.

• Android 6 works as expected using Samsung's multi-window support.
• Android 7 works as expected, and appears to use Android 7's native split-screen with some additional feature (like being able to pop up a floating window).

Seems like a fairly safe merge. After that, I'll look into supporting multiple instances (which Samsung's multi window API supports) leveraging this merge request:
#187

Just noticed this addresses Issue #29

@bumper314 Thanks a lot - this will be available in a v0.52 update available later today!

Amazing how simple this was! I don't understand why don't everybody add it...
Thanks!