NORDIC Thing:52 Android App 学习之一：THINGY 52 节点与手机的蓝牙识别、过滤及通信建立

Android App 蓝牙扫描功能页面, SCAN 按键触发蓝牙扫描

XML 文件:

app\res\layout\activity_configuration.xml
JAVA 文件:
app\java\no.nordicsemi.android.nrfthingy\configuration\InitialConfigurationActivity.java
app\java\no.nordicsemi.android.nrfthingy\common\ScannerFragment.java

app\thingylib\java\no.nordicsemi.android.thingylib\utils\ThingyUtils.java (service UUID 定义)

==================================

启动函数

mConfirmThingy.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {if (Utils.checkIfVersionIsMarshmallowOrAbove()) {if (ActivityCompat.checkSelfPermission(InitialConfigurationActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {if(isLocationEnabled()) {if (isBleEnabled()) {final String title = mConfirmThingy.getText().toString().trim();if (title.contains("Disconnect")) {mAddressNfc = null;mThingySdkManager.disconnectFromThingy(mDevice);mConfirmThingy.setText(R.string.scan_thingy);}mScannerFragment.show(getSupportFragmentManager(), null);} else enableBle();} else {Utils.showToast(InitialConfigurationActivity.this, getString(R.string.location_services_disabled));}} else {final PermissionRationaleDialogFragment dialog = PermissionRationaleDialogFragment.getInstance(Manifest.permission.ACCESS_COARSE_LOCATION, Utils.REQUEST_ACCESS_COARSE_LOCATION, getString(R.string.rationale_message_location));dialog.show(getSupportFragmentManager(), null);}} else {if (isBleEnabled()) {final String title = mConfirmThingy.getText().toString().trim();if (title.contains("Disconnect")) {mAddressNfc = null;mThingySdkManager.disconnectFromThingy(mDevice);}mScannerFragment.show(getSupportFragmentManager(), null);} else enableBle();}}
});

扫描函数

/*** Scan for 5 seconds and then stop scanning when a BluetoothLE device is found* then mLEScanCallback is activated* This will perform regular scan for custom BLE Service UUID* and then filter out using class ScannerServiceParser*/private void startScan() {// Since Android 6.0 we need to obtain either Manifest.permission.ACCESS_COARSE_LOCATION or Manifest.permission.ACCESS_FINE_LOCATION to be able to scan for// Bluetooth LE devices. This is related to beacons as proximity devices.// On API older than Marshmallow the following code does nothing.if (ContextCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {// When user pressed Deny and still wants to use this functionality, show the rationaleif (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION)) {return;}requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, REQUEST_PERMISSION_REQ_CODE);return;}mAdapter.clearDevices();mScanButton.setText(R.string.scanner_action_cancel);troubleshootView.setVisibility(View.VISIBLE);final BluetoothLeScannerCompat scanner = BluetoothLeScannerCompat.getScanner();final ScanSettings settings = new ScanSettings.Builder().setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY).setReportDelay(750).setUseHardwareBatchingIfSupported(false).setUseHardwareFilteringIfSupported(false).build();final List<ScanFilter> filters = new ArrayList<>();filters.add(new ScanFilter.Builder().setServiceUuid(mUuid).build());scanner.startScan(filters, settings, scanCallback);mIsScanning = true;mHandler.postDelayed(new Runnable() {@Overridepublic void run() {if (mIsScanning) {stopScan();}}}, SCAN_DURATION);}

==================================

重要说明

蓝牙扫描时, 过滤规划限制为以下语句中的 mUuid; 如蓝牙设备基本协议服务 UUID 不同，则无法识别;

filters.add(new ScanFilter.Builder().setServiceUuid(mUuid).build());

==================================

mUuid 变量追溯

private ParcelUuid mUuid;public void onCreate(final Bundle savedInstanceState) {super.onCreate(savedInstanceState);final Bundle args = getArguments();mUuid = args.getParcelable(PARAM_UUID);
//        mUuid = ParcelUuid.fromString("EF680100-9B35-4933-9B10-52FFA9740042");}
--------------------------------------------------------------------------------------
private final static String PARAM_UUID = "param_uuid";public static ScannerFragment getInstance(final UUID uuid) {final ScannerFragment fragment = new ScannerFragment();final Bundle args = new Bundle();if (uuid != null) {args.putParcelable(PARAM_UUID, new ParcelUuid(uuid));}fragment.setArguments(args);return fragment;}
--------------------------------------------------------------------------------------
private ScannerFragment mScannerFragment;
mScannerFragment = ScannerFragment.getInstance(ThingyUtils.THINGY_BASE_UUID);mScannerFragment.show(getSupportFragmentManager(), null);
--------------------------------------------------------------------------------------
public static final UUID THINGY_BASE_UUID  = new UUID(0xEF6801009B354933L, 0x9B1052FFA9740042L);

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