I have written a 16 key Bluetooth Serial Port
Tx/Rx App in Mintoris Basic. The App uses the
which allows you to select from 15 different
button styles for the keypad. Here is the link
to the install .apk file called: BTkeypad.apkhttps://ln.sync.com/dl/6cdb9c790/femszav3-j84g47yk-h2tah277-tin8byq3
This program was written on a Samsung Galaxy Note 3 which
has a screen resolution of 1920 x 1080 pixels.
The SetOnBackButtonSub sets a flag variable which is
analyzed in the main program loop which decides when
to launch the selection menu.
Press the Back Button and then Touch the screen to launch
the selection menu. From this menu you can change the
color of the 16 keys on the keypad or Exit the Application.