Question

I am trying to develop an android application that will use Bluetooth capabilities to transfer data from a chip to an Android phone. I have not changed the code from the tutorial on the developer’s website at all.

I am getting the following error:

_context cannot be resolved as a variable

Here is my code:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    LocalBluetoothDevice localBT = LocalBluetoothDevice.initLocalDevice(_context);
    BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
    if (mBluetoothAdapter == null) {    
        // Device does not support Bluetooth        
    }
    if (!mBluetoothAdapter.isEnabled()) {    
        Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);    
        startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
    }
}

Answer 1

Use

LocalBluetoothDevice localBT = LocalBluetoothDevice.initLocalDevice(this);

or

Context context = this;
LocalBluetoothDevice localBT = LocalBluetoothDevice.initLocalDevice(context);