android - ScanCallback onScanResult 不扫描我的手机

Question

我想在两部手机上使用一个应用程序，彼此可以将其扫描为信标。我添加了信标发射器。App nrfConnect 检测到我的手机，但是当我在两台设备上运行我的代码时：

• nrF 连接器仅扫描我首先运行该应用程序的第一台设备

• 当在我的第二部手机上运行该应用程序并调试我的第二部手机以检测我的第一部手机时，找不到我的第一部手机（但可以在 nrfconnector 上找到）

这是我的代码剪断

private String uniqueID;
private BeaconTransmitter mBeaconTransmitter;


 Beacon beacon = new Beacon.Builder()
                //.setId1("2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6")
                .setId1(uniqueID)
                .setId2("1")
                .setId3("2")
                .setManufacturer(0x0118) 
                .setTxPower(-59)
                .setDataFields(Arrays.asList(new Long[] {0l}))
                .build();

                            mBeaconTransmitter.startAdvertising(beacon, new AdvertiseCallback() {
                                @Override
                                public void onStartSuccess(AdvertiseSettings settingsInEffect) {
                                    super.onStartSuccess(settingsInEffect);
                                    Log.i(TAG, "Advertisement start succeeded.");

                                }

                                @Override
                                public void onStartFailure(int errorCode) {
                                    super.onStartFailure(errorCode);
                                    Log.e(TAG, "Advertisement start failed with codeee: " + errorCode);
                                }
                            });

 @Override
    public void onResume() {
        mMapView.onResume();

        if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled()) {
            Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
            startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
        } else {
            if (Build.VERSION.SDK_INT >= 21) {
                bluetoothLeScanner = bluetoothAdapter.getBluetoothLeScanner();
                settings = new ScanSettings.Builder()
                        .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
                        .build();
                filters = new ArrayList<ScanFilter>();
            }
            scanLeDevice(true);
        }


        super.onResume();
    }

    private void scanLeDevice(final boolean enable) {
        if (enable) {
            handler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    if (Build.VERSION.SDK_INT < 21) {
                        bluetoothAdapter.stopLeScan(mLeScanCallback);
                    } else {
                        bluetoothLeScanner.stopScan(mScanCallback);

                    }
                }
            }, SCAN_PERIOD);
            if (Build.VERSION.SDK_INT < 21) {
                bluetoothAdapter.startLeScan(mLeScanCallback);
            } else {
                bluetoothLeScanner.startScan(filters, settings, mScanCallback);
               //bluetoothLeScanner.startScan(mScanCallback);
            }
        } else {
            if (Build.VERSION.SDK_INT < 21) {
                bluetoothAdapter.stopLeScan(mLeScanCallback);
            } else {
                bluetoothLeScanner.stopScan(mScanCallback);
            }
        }
    }

    private ScanCallback mScanCallback = new ScanCallback() {
        @Override
        public void onScanResult(int callbackType, ScanResult result) {
            Log.i("callbackType", String.valueOf(callbackType));
            Log.i("name", String.valueOf(result));

            String callBackDeviceName = result.getDevice().getName();
            String deviceAddress = result.getDevice().getAddress();
            //String rssi = result.getRssi;

            ScanRecord scanRecord = result.getScanRecord();
            SparseArray<byte[]> manufacturerData = scanRecord.getManufacturerSpecificData();
            for(int i = 0; i < manufacturerData.size(); i++){
                int manufacturerId = manufacturerData.keyAt(i);
                if (manufacturerId == 280) { // 0x0118
                    filterManufacturaId.add(manufacturerId);
                }

            }


            if (callBackDeviceName != null){
                if (callBackDeviceName.startsWith("Pi")){
                    Log.i("result", "Device name: "+callBackDeviceName);
                    Log.i("result", result.toString());
                    BluetoothDevice btDevice = result.getDevice();
                    connectToDevice(btDevice);
                }
            }

        }

        @Override
        public void onBatchScanResults(List<ScanResult> results) {
            for (ScanResult sr : results) {
                Log.i("ScanResult – Results", sr.toString());
            }
        }

        @Override
        public void onScanFailed(int errorCode) {
            Log.e("Scan Failed", "Error Code: " + errorCode);
        }
    };

标签： androidbluetooth-lowenergy

Answer 1

您是否在 Manifest 中设置了位置权限？需要让它为我工作。