: Allows you to toggle split-screen mode by long-pressing the Home , Back , or Overview (recent apps) buttons.
: Long-press your chosen button while an app is open to instantly enter multi-window mode. ericytsang/app.android.multiwindow - GitHub : Allows you to toggle split-screen mode by
The app you are looking for is , developed by Eric Tsang (etsang) . It was specifically designed to restore the long-press shortcut for multi-window mode that was removed in newer Android versions. Download Options : Allows you to toggle split-screen mode by
: The safest way to install the Split Screen Shortcut app directly to your device. : Allows you to toggle split-screen mode by