Lint error in getting Bluetooth adapter

Question

I am following documentation to Bluetooth Low Energy devices to scan BLE devices.

As mentioned in the doc, I defined ---

BluetoothAdapter mBluetoothAdapter = null;

final BluetoothManager bluetoothManager = 
(BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);

mBluetoothAdapter = bluetoothManager.getAdapter(); //Lint Error..

But I am getting a Lint error---

Call requires API level 18 (current min is 8): android.bluetooth.BluetoothManager#getAdapter

So I changed my code to--

mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

Is the code replacement for the above lint error ?

Answer 1

You can call BluetoothAdapter.getDefaultAdapter(). BluetoothManager documentation says that

Use getSystemService(java.lang.String) with BLUETOOTH_SERVICE to create an BluetoothManager, then call getAdapter() to obtain the BluetoothAdapter.

Alternatively, you can just call the static helper getDefaultAdapter().

---

Or you can check build version and initialize mBluetoothAdapter, like below

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {
        mBluetoothAdapter = bluetoothManager.getAdapter();
} else {
       mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
}