Establishing MTP connection for Android Studio
Android Studio needs a device connected in ADB not MTP, though MTP can be activated with no effect. 

On the device: 


Open the Developer options
Enable USB debugging. 
You  need to install drivers for the device to get detected by the PC. 


On the PC, Android Studio:


Alt + F10  should open a window showing your device connected


Then you'll be able to test apps build with Android Studio