In my understand, Anroid app supports only SPP connection not HFP and A2DP.
However, I want to initiate HFP and A2DP connection in Android app just like selecting Bluetooth device in Bluetooth Settings menu. I'm not sure it is possible to use a intent including BluetothDevice object, so the intent receiver can initiate HFP and A2DP connection.
If you have a idea, could you let me know that?