I introduce you my 2 apks!!so far made then in b4a...hope you find them useful!!!
the first one is aZephyr:
aZephyr is an apk that willl make you forget your tablet or smartPhone buttons
with just 3 simple gesture!!
1º)Swipe Up from bottom of your android handle to simulate HOME button
2º)Swipe Up from bottom and then Down till the botton to simulate the POWER buttton(This require Admin Privileges)
3º)Long Press at the bottom edge of your handle to SHOW RECENTS APKS
So if you have a defective button, or you want to reserve them as new, or simply because it is much easier to use only gesture this is your aplication
Once the Aplication it is installed you can also view a video to see how it works
This is the DEMO version limited to 500 times
For less than a beer you can have the INFINITE version-
Go and find it on the PLAYSTORE (newbies do not have right to put the links!!)