Java Code Examples for android.bluetooth.le.BluetoothLeScanner#stopScan()

/**
 * Stops an ongoing Bluetooth LE device scan.
 *
 * @param callback used to identify which scan to stop must be the same handle used to start the
 * scan
 * @deprecated Use {@link BluetoothLeScanner#stopScan(ScanCallback)} instead.
 */
@Deprecated
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public void stopLeScan(LeScanCallback callback) {
    if (DBG) {
        Log.d(TAG, "stopLeScan()");
    }
    BluetoothLeScanner scanner = getBluetoothLeScanner();
    if (scanner == null) {
        return;
    }
    synchronized (mLeScanClients) {
        ScanCallback scanCallback = mLeScanClients.remove(callback);
        if (scanCallback == null) {
            if (DBG) {
                Log.d(TAG, "scan not started yet");
            }
            return;
        }
        scanner.stopScan(scanCallback);
    }
}
 

private void stopScan() {
  BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
  if (adapter != null && adapter.isEnabled()) {
    BluetoothLeScanner bleScanner = adapter.getBluetoothLeScanner();
    if (bleScanner != null) {
      bleScanner.stopScan(scanCallback);
    } else if (RxCentralLogger.isError()) {
      RxCentralLogger.error("stopScan - BluetoothLeScanner is null!");
    }
  } else if (RxCentralLogger.isError()) {
    if (adapter == null) {
      RxCentralLogger.error("stopScan - Default Bluetooth Adapter is null!");
    } else {
      RxCentralLogger.error("stopScan - Bluetooth Adapter is disabled.");
    }
  }

  scanDataSubject = null;
}
 

private void stopScan() {
  BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
  if (adapter != null && adapter.isEnabled()) {
    BluetoothLeScanner bleScanner = adapter.getBluetoothLeScanner();
    if (bleScanner != null) {
      bleScanner.stopScan(scanCallback);
    } else if (RxCentralLogger.isError()) {
      RxCentralLogger.error("stopScan - BluetoothLeScanner is null!");
    }
  } else if (RxCentralLogger.isError()) {
    if (adapter == null) {
      RxCentralLogger.error("stopScan - Default Bluetooth Adapter is null!");
    } else {
      RxCentralLogger.error("stopScan - Bluetooth Adapter is disabled.");
    }
  }
}
 

@TargetApi(21 /* Build.VERSION_CODES.LOLLIPOP */)
public void stopLeScan(ScanCallback scanCallback) {
    if (!bluetoothAdapter.isEnabled()) {
        // this situation seems to be a problem since API 29
        RxBleLog.v(
                "BluetoothAdapter is disabled, calling BluetoothLeScanner.stopScan(ScanCallback) may cause IllegalStateException"
        );
        // if stopping the scan is not possible due to BluetoothAdapter turned off then it is probably stopped anyway
        return;
    }
    final BluetoothLeScanner bluetoothLeScanner = bluetoothAdapter.getBluetoothLeScanner();
    if (bluetoothLeScanner == null) {
        RxBleLog.w(
                "Cannot call BluetoothLeScanner.stopScan(ScanCallback) on 'null' reference; BluetoothAdapter.isEnabled() == %b",
                bluetoothAdapter.isEnabled()
        );
        // if stopping the scan is not possible due to BluetoothLeScanner not accessible then it is probably stopped anyway
        // this should not happen since the check for BluetoothAdapter.isEnabled() has been added above. This situation was only
        // observed when the adapter was disabled
        return;
    }
    bluetoothLeScanner.stopScan(scanCallback);
}
 

@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
/* package */ void stopScanInternal(@NonNull final Context context,
									@NonNull final PendingIntent callbackIntent) {
	final BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
	final BluetoothLeScanner scanner = adapter.getBluetoothLeScanner();
	if (scanner == null)
		throw new IllegalStateException("BT le scanner not available");

	final PendingIntent pendingIntent = createStoppingPendingIntent(context, callbackIntent);
	scanner.stopScan(pendingIntent);

	synchronized (wrappers) {
		// Do not remove the key, just set the value to null.
		// Based on that we will know that scanning has been stopped.
		// This is used to discard scanning results delivered after the scan was stopped.
		// Unfortunately, the callbackIntent will have to be kept and won't he removed,
		// despite the fact that reports will eventually stop being broadcast.
		wrappers.put(callbackIntent, null);
	}
}
 

@Override
@RequiresPermission(allOf = {Manifest.permission.BLUETOOTH_ADMIN, Manifest.permission.BLUETOOTH})
/* package */ void stopScanInternal(@NonNull final ScanCallback callback) {
	ScanCallbackWrapperLollipop wrapper;
	synchronized (wrappers) {
		wrapper = wrappers.remove(callback);
	}
	if (wrapper == null)
		return;

	wrapper.close();

	final BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
	if (adapter != null) {
		final BluetoothLeScanner scanner = adapter.getBluetoothLeScanner();
		if (scanner != null)
			scanner.stopScan(wrapper.nativeCallback);
	}
}
 

@Override
public void onScanResult(int callbackType, ScanResult result)
{
    //String bleDeviceAddress = getSharedPref().getString("bluetoothDeviceAddress", "unknown");
    //String devName = device.getName() + " [" + device.getAddress() + "]";
    //PodEmuLog.debug("SIBLE: device found - " + devName);

    BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
    BluetoothLeScanner bluetoothLeScanner = adapter.getBluetoothLeScanner();
    //Do the work below on a worker thread instead!
    bleDevice = result.getDevice();

    bluetoothLeScanner.stopScan(this);
    setState(STATE_CONNECTING);

    bleGATT = bleDevice.connectGatt(baseContext, false, bleGattCallback);
    bleGATT.requestConnectionPriority(BluetoothGatt.CONNECTION_PRIORITY_HIGH);

}
 

public static void stopNativeScan(BluetoothAdapter adapter) {
    if (adapter == null)
    {
        Log.e("ScanManager", "Tried to stop the scan, but the Bluetooth Adapter instance was null!");
        return;
    }

    final BluetoothLeScanner scanner = adapter.getBluetoothLeScanner();
    if (scanner != null)
        scanner.stopScan(m_callback);
    else
        Log.w("ScanManager", "Tried to stop the scan, but the BluetoothLeScanner instance was null. This implies the scanning has stopped already.");
}
 

@TargetApi(21)
public void close()
{
    BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
    BluetoothLeScanner bluetoothLeScanner = adapter.getBluetoothLeScanner();
    bluetoothLeScanner.stopScan(new MyScanCallback());

    if(bleGATT!=null) bleGATT.close();
    bleGATT=null;
    bleDevice=null;
    bleScanThread=null;
    mInBuffer.removeAll();
    releaseWriteLock();
}
 

public static void stopNativeScan(BluetoothAdapter adapter) {
    if (adapter == null)
    {
        Log.e("ScanManager", "Tried to stop the scan, but the Bluetooth Adapter instance was null!");
        return;
    }

    final BluetoothLeScanner scanner = adapter.getBluetoothLeScanner();
    if (scanner != null)
        scanner.stopScan(m_callback);
    else
        Log.w("ScanManager", "Tried to stop the scan, but the BluetoothLeScanner instance was null. This implies the scanning has stopped already.");
}