BLE背景扫描

Question

我正在运行使用Android BLE API 24/7扫描BLE设备的后台服务。我的服务使用START_STICKY运行。当我找到一个特定的设备时，我会做我的工作。

我的问题是：当我的设备进入深度睡眠状态时，我是否仍然可以获得ScanCallback，或者我是否需要获取PARTIAL_WAKE_LOCK以防止CPU进入深度睡眠以获取ScanCallback？

感谢。

public class MYService extends IntentService {

public void onCreate() {
        super.onCreate();
        Log.e("TAG","onCreate");
        BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
        BluetoothAdapter bluetoothAdapter = bluetoothManager.getAdapter();
        BluetoothLeScanner lEScanner = bluetoothAdapter.getBluetoothLeScanner();
        ScanSettings settings = new ScanSettings.Builder().setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY).build();
        List<ScanFilter> filters = new ArrayList<>();
        ScanFilter.Builder sfBuilder = new ScanFilter.Builder();
        sfBuilder.setDeviceName(DEVICE_NAME);
        sfBuilder.setServiceUuid(ParcelUuid.fromString(ServiceUUID_D1));
        filters.add(sfBuilder.build());
        lEScanner.startScan(filters,settings,mScanCallback);
}

Answer 1

您应该在拥有BLE扫描程序的过程中使用Foreground Service，以避免您的应用在后台被杀死。