keycode_dpad_up
keycode_dpad_down
keycode_dpad_left
keycode_dpad_right
keycode_dpad_center
keycode_back
keycode_call
keycode_camera
keycode_clear
kecode_endcall
keycode_home
keycode_menu
keycode_mute
keycode_power
keycode_search
keycode_volume_up
keycode_volume_down