Google introduced the new Immersive Mode in Android 4.4 KitKat that automatically hides the status bar and the navigation bar for certain apps, letting you view the app in full screen mode while still being able to bring up either of the system bars by swiping down from the top edge or swiping up from the bottom one. However, this mode works only in apps that have it enabled by their developers, giving users no control over the apps for which it gets enabled. Though thanks to Immerse Me Xposed Module by XDA Senior Member MohammadAG, you can now enable the full screen Immersive Mode for all your apps, as long as you have a rooted Android 4.4+ KitKat device with the Xposed framework installed.
In case you are unfamiliar with the Xposed framework, take a look at detailed guide on installing and using Xposed Framework, which will also guide you through the process of installing any Xposed module. To start using Immerse Me, simply install and enable the module as per the instructions in our guide, and restart your phone or tablet.
After you restart, you will notice that every single app (including your home screen launcher) is showing up in full screen by default, just the way it would in Immersive Mode. And you can bring the system bars by swiping from either of the top or bottom edges.
At the moment, Immerse Me applies Immersive Mode to all your apps when enabled, but the developer has promised to add the ability to selectively enable it for apps of your choice in a future update.
While something like this has been possible in custom ROMs like Paranoid Android, CyanogenMod and AOKP for quite a while in form of the Expanded Desktop feature, it wasn’t a native implementation of the AOSP Android itself, and wasn’t available on stock Android. With this mod, it is now possible for anyone with a rooted Android phone or tablet running Android 4.4 KitKat or later to put this native feature to use for all their apps.
To learn more about immerse Me, report bugs, stay up to date on development, and request features, head over to its XDA forum thread at the link below.