AndroidManifest.xml 에 다음 permission 추가 OBDAccess.java package com.urrecliner.blackbox; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.content.SharedPreferences; import android.view.View; import android.widget.Toast; import com.github.pires.obd.commands.ObdCommand; import com.github.pires.obd.commands.S..