Additions cannot work

[chunfytseng]

My system is Android 4.01. I use additions to navigate the Skoda car. The effect I want to achieve is that the key of the steering wheel can be activated and the third party music player can be switched on. At present, only the default player can be controlled. When I open additions and start adding keys, only the virtual key of Skysword car navigation can be activated. When I press the media on the steering wheel to start. When I press the button, I immediately start my own player, and additions don't get the corresponding healthy value. So do the keys in the previous and next period. What should I do?