Android灯塔库在一个Android4.4设备上运行得很好，但在另一个设备上却不工作。

Question

更新:我尝试了一种更直接的方法(见下面的编辑3 )，这会导致手表上的信标缺少有趣的数据。

关于非工作装置的详细信息。智能手表(通用)被列为蓝牙4.0功能的MTK6572芯片组型号EC720 (似乎有许多变体)，Android4.4.2内核: 3.4.67 chendlin-Z87-HD3 #1 20141227日版本号: H82D.SMARTWATCH.OC4.0.20141447自定义版本: 1419655453

我正在使用相同的Radius网络标记信标测试相同的应用程序。在这个测试中，我在我的设备的近距离内有同样的4个信标。

设备1是Nexus 7 (2013)，我还没有更新到Android L，它正在运行4.4.4

设备2是一个通用的智能手表，在MTK6572上运行Android4.4.2。规范列出它有蓝牙4.0

当我使用运行我的测试应用程序时，Nexus报告信标，但是智能手表没有。但是，我在logcat中似乎可以检测到它们，例如:d/BluetoothAdapter: onScanResult() - Device=E5:E0:20:CF:63:32 RSSI=-60。这些消息似乎通常是在BeaconParser无法读取正确类型的信标时出现的，但在我的示例中，我很确定这不是问题，因为nexus看到的信标与代码完全相同。

这两个设备的日志输出看起来非常不同，我开始怀疑，作为BLE的支持，android的手表构建是禁用了，还是堆栈不完整。我已经检查了蓝牙是开着的，也想注意的是，手表有应用程序权限管理，我将其设置为“始终允许”所有申请请求的权限。

下面是智能手表上的部分逻辑猫：

02-03 19:40:40.393    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ This consumer is not bound.  binding: com.mapcushion.android.mapcushionpingl.Scan@41c7d2c0
02-03 19:40:40.435    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ consumer count is now:1
...
02-03 19:40:40.617    2620-2620/com.mapcushion.android.mapcushionpingl I/BeaconService﹕ beaconService version 2.1 is starting up
02-03 19:40:40.638    2620-2620/com.mapcushion.android.mapcushionpingl I/CycledLeScanner﹕ This is not Android 5.0.  We are using old scanning APIs
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/ModelSpecificDistanceCalculator﹕ Finding best distance calculator for 4.4.2,KOT49H,EC720,alps
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ Score is 0 for LGE;Nexus 4;KOT49H;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ Score is 0 for LGE;Nexus 5;LPV79;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl W/ModelSpecificDistanceCalculator﹕ Cannot find match for this device.  Using default
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/ModelSpecificDistanceCalculator﹕ Finding best distance calculator for 4.4.2,KOT49H,EC720,alps
02-03 19:40:40.645    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ Score is 0 for LGE;Nexus 4;KOT49H;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.646    2620-2620/com.mapcushion.android.mapcushionpingl D/AndroidModel﹕ Score is 0 for LGE;Nexus 5;LPV79;4.4.2 compared to alps;EC720;KOT49H;4.4.2
02-03 19:40:40.646    2620-2620/com.mapcushion.android.mapcushionpingl W/ModelSpecificDistanceCalculator﹕ Cannot find match for this device.  Using default
02-03 19:40:40.648    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ No org.altbeacon.beacon.SimulatedScanData class exists.
02-03 19:40:40.649    2620-2620/com.mapcushion.android.mapcushionpingl D/ActivityThread﹕ SVC-CREATE_SERVICE handled : 0 / CreateServiceData{token=android.os.BinderProxy@41cbbec8 className=org.altbeacon.beacon.service.BeaconService packageName=com.mapcushion.android.mapcushionpingl intent=null}
02-03 19:40:40.650    2620-2620/com.mapcushion.android.mapcushionpingl I/BeaconService﹕ binding
02-03 19:40:40.656    2620-2620/com.mapcushion.android.mapcushionpingl D/ActivityThread﹕ SVC-BIND_SERVICE handled : 0 / BindServiceData{token=android.os.BinderProxy@41cbbec8 intent=Intent { cmp=com.mapcushion.android.mapcushionpingl/org.altbeacon.beacon.service.BeaconService }}
02-03 19:40:40.723    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ create handle(0x552ed2b8) (w:256, h:240, f:1)
02-03 19:40:40.725    2620-2620/com.mapcushion.android.mapcushionpingl I/MaliEGL﹕ [Mali]surface->num_buffers=4, surface->num_frames=3, win_min_undequeued=1
02-03 19:40:40.725    2620-2620/com.mapcushion.android.mapcushionpingl I/MaliEGL﹕ [Mali]max_allowed_dequeued_buffers=3
02-03 19:40:40.725    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ close handle(0x552ed2b8) (w:256 h:240 f:1)
02-03 19:40:40.733    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ create handle(0x553ec108) (w:256, h:240, f:1)
02-03 19:40:40.735    2620-2620/com.mapcushion.android.mapcushionpingl D/OpenGLRenderer﹕ Enabling debug mode 0
02-03 19:40:40.737    2620-2620/com.mapcushion.android.mapcushionpingl D/GraphicBuffer﹕ create handle(0x5542c8a8) (w:768, h:768, f:1)
02-03 19:40:40.741    2620-2620/com.mapcushion.android.mapcushionpingl W/MALI﹕ MTK_AUX_isMTKFormat:168: int MTK_AUX_isMTKFormat(ANativeWindowBuffer_t*): format=1
02-03 19:40:40.743    2620-2620/com.mapcushion.android.mapcushionpingl D/OpenGLRenderer﹕ setViewport 240x240 <0x553ec690>
02-03 19:40:40.745    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ we have a connection to the service now
02-03 19:40:40.747    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ callback packageName: com.mapcushion.android.mapcushionpingl
02-03 19:40:40.747    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconManager﹕ This consumer is already bound
...
02-03 19:40:40.814    2620-2620/com.mapcushion.android.mapcushionpingl I/BeaconService﹕ start ranging received
02-03 19:40:40.814    2620-2620/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ Currently ranging 1 regions.
02-03 19:40:40.814    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ start called
02-03 19:40:40.828    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ starting a new scan cycle
02-03 19:40:40.829    2620-2620/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ isEnabled
02-03 19:40:40.834    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ starting a new bluetooth le scan
02-03 19:40:40.835    2620-2620/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ startLeScan(): null
02-03 19:40:40.874    2620-2633/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onClientRegistered() - status=0 clientIf=1
02-03 19:40:40.879    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Waiting to stop scan cycle for another 1100 milliseconds
02-03 19:40:40.880    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Scan started
02-03 19:40:40.880    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Set scan periods called with 1100, 0  Background mode must have changed.
02-03 19:40:40.881    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ We are not in the background.  Cancelling wakeup alarm
02-03 19:40:40.881    2620-2620/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ cancel wakeup alarm: null
02-03 19:40:41.084    2620-2634/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onScanResult() - Device=E5:E0:20:CF:63:32 RSSI=-45
02-03 19:40:41.084    2620-2634/com.mapcushion.android.mapcushionpingl D/CycledLeScannerForJellyBeanMr2﹕ got record

这是我的代码：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_scan);
    mHandler = new android.os.Handler();
    beaconManager = BeaconManager.getInstanceForApplication(this);
    beaconManager.setDebug(true);
    beaconManager.getBeaconParsers().add(new BeaconParser().
            setBeaconLayout(" m:2-3=0215,i:4-19,i:20-21,i:22-23,p:24-24"));
    beaconManager.bind(this);
    sendBeacons();

}

@Override
public void onBeaconServiceConnect() {

    beaconManager.setRangeNotifier(new RangeNotifier() {
        @Override
        public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
            System.out.println("------- didRangeBeacons!!!!");
            iBeacons = beacons;
            System.out.println("------ num:: " + iBeacons.size());

            /*
            for(Beacon iBeacon : iBeacons) {

                Log.i("Beacon", "found \nProxUUID: " + iBeacon.getId1()
                        + "\ntx: " + Integer.toString(iBeacon.getTxPower())
                        + "\nmanu: " + Integer.toString(iBeacon.getManufacturer())
                        + "\ndistance: " + Double.toString(iBeacon.getDistance())
                        + "\nRSSI:" + Integer.toString(iBeacon.getRssi())
                        + "\nTxPow:" + Integer.toString(iBeacon.getTxPower())
                        + "\nBeacon type code:" + Double.toString(iBeacon.getBeaconTypeCode())
                        + "\n------------------------------------------------");
            }
            */

        }
    });

    try {
        beaconManager.startRangingBeaconsInRegion(new Region("briansbeacons", null, null, null));
    } catch(RemoteException e) {
        e.printStackTrace();
    }
    beaconManager.bind(this);
}

编辑1：

添加更具体的日志条目以尝试显示信标检测的差异:除一个信标外，我删除了所有的信标，注意到工作设备正在通过UUID识别信标，而不工作的则不是。但是我在工作设备的日志中找不到对Device=E5:E0:20:CF:63:32的任何引用。

Nexus 7(工作)：

02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ beacon detected multiple times in scan cycle :id1: 2f234454-cf6d-4a0f-adf2-f4911ba9ffa6 id2: 4 id3: 101
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ beacon detected :id1: 2f234454-cf6d-4a0f-adf2-f4911ba9ffa6 id2: 4 id3: 101
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ looking for ranging region matches for this beacon
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ matches ranging region: id1: null id2: null id3: null
02-02 23:48:14.795  10727-10751/com.mapcushion.android.mapcushionpingl D/RangeState﹕ adding id1: 2f234454-cf6d-4a0f-adf2-f4911ba9ffa6 id2: 4 id3: 101 to existing range for: org.altbeacon.beacon.service.RangedBeacon@41eb5380
02-02 23:48:14.915  10727-10738/com.mapcushion.android.mapcushionpingl D/CycledLeScannerForJellyBeanMr2﹕ got record
02-02 23:48:14.915  10727-10759/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting be ac.  The bytes I see are: 02011a0bff4c0009060102c0a801130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:48:14.915  10727-10759/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting 02 15.  The bytes I see are: 02011a0bff4c0009060102c0a801130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

SmartWatch (不工作)：

02-02 23:46:52.598    3351-3364/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onScanResult() - Device=E5:E0:20:CF:63:32 RSSI=-31
02-02 23:46:52.599    3351-3364/com.mapcushion.android.mapcushionpingl D/CycledLeScannerForJellyBeanMr2﹕ got record
02-02 23:46:52.600    3351-3364/com.mapcushion.android.mapcushionpingl D/BluetoothDevice﹕ mAddress: E5:E0:20:CF:63:32
02-02 23:46:52.603    3351-3383/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting be ac.  The bytes I see are: 0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:46:52.603    3351-3383/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting 02 15.  The bytes I see are: 0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:46:52.605    3351-3383/com.mapcushion.android.mapcushionpingl D/BeaconParser﹕ This is not a matching Beacon advertisement.  (Was expecting 02 15.  The bytes I see are: 0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
02-02 23:46:53.432    3351-3351/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Waiting to stop scan cycle for another 98 milliseconds
02-02 23:46:53.531    3351-3351/com.mapcushion.android.mapcushionpingl D/CycledLeScanner﹕ Done with scan cycle
02-02 23:46:53.531    3351-3351/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ Calling ranging callback

我还注意到，在不工作的设备中，对BeaconService的唯一引用如下：

02-02 23:46:52.364    3351-3351/com.mapcushion.android.mapcushionpingl D/BeaconService﹕ Calling ranging callback
02-02 23:46:52.364    3351-3351/com.mapcushion.android.mapcushionpingl D/Callback﹕ attempting callback via intent: ComponentInfo{com.mapcushion.android.mapcushionpingl/org.altbeacon.beacon.BeaconIntentProcessor}

而在工作装置中，信标的大部分测井似乎都来自那个阶层.

编辑-更新2：

回应大卫有关MAC地址的问题

以下代码：

beaconManager.setRangeNotifier(new RangeNotifier() {
    @Override
    public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
    System.out.println("------- didRangeBeacons!!!!");
    iBeacons = beacons;
    System.out.println("------ num:: " + iBeacons.size());


    for(Beacon iBeacon : iBeacons) {
        Log.i("Beacon", "\n------------------------------------------------");
        Log.d(TAG, "Mac address is: "+iBeacon.getBluetoothAddress());
        Log.i("Beacon", "\n------------------------------------------------");
    }


    }
});

在工作的Nexus 7上生产：

02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------- didRangeBeacons!!!!
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------ num:: 1
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/Beacon﹕ ------------------------------------------------
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl D/RangingActivity﹕ Mac address is: E5:E0:20:CF:63:32
02-03 19:44:57.200    3192-3438/com.mapcushion.android.mapcushionpingl I/Beacon﹕ ------------------------------------------------

在智能手表上：

02-03 19:40:46.671    2620-2671/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------- didRangeBeacons!!!!
02-03 19:40:46.671    2620-2671/com.mapcushion.android.mapcushionpingl I/System.out﹕ ------ num:: 0

因此，BeaconManager (或底层的android )并没有将布尔设备“视为”信标，但它确实用这一行识别了具有相同MAC地址的信标：

02-03 19:40:46.486    2620-2633/com.mapcushion.android.mapcushionpingl D/BluetoothDevice﹕ mAddress: E5:E0:20:CF:63:32

编辑3：

我决定后退一步，尝试使用android蓝牙API直接查询信标。

基本上，我只是尝试输出返回的字节，看看为什么信标没有被识别。对于同一个信标，输出看起来完全不同，只有前两个字节有智能手表看到的信标的数据，而nexus 7有30个字节的数据。

到目前为止，我尝试过更改SCAN_TIME，但没有任何效果。手表接收不到的数据是否表明它无法读取可读取的数据包？

我使用了以下代码：

    private static final long SCAN_TIME = 5000;
    boolean mScanning = false;
    private void scanLeDevice(final boolean enable) {
        Log.i(null, "Inside scanLeDevice");
        Log.i(null, "scan time is: " + SCAN_TIME);
        if (enable) {
            // Stops scanning after a pre-defined scan period.
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    mScanning = false;
                    Log.i(null, "Calling stopLeScan");
                    mBluetoothAdapter.stopLeScan(mLeScanCallback);
                }
            }, SCAN_TIME);

            mScanning = true;
            Log.i(null, "Calling startLeScan");
            mBluetoothAdapter.startLeScan(mLeScanCallback);
        } else {
            mScanning = false;
            mBluetoothAdapter.stopLeScan(mLeScanCallback);
        }
    }

    private BluetoothAdapter.LeScanCallback mLeScanCallback =
        new BluetoothAdapter.LeScanCallback() {
            @Override
            public void onLeScan(final BluetoothDevice device, int rssi,
                                 final byte[] scanRecord) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Log.i(null, "INSIDE ONLESCAN");
                        //DO MY WORK
                        Log.i(null, "scanned record: " + scanRecord.length);

                        int startByte = 2;
                        boolean patternFound = false;

                        for(int i=0; i<scanRecord.length; i++) {
                            Log.i(null, "byte " + i + ": " + scanRecord[i]);
                        }

                        while (startByte <= 5) {
                            Log.i(null, "scanned record: " + scanRecord.length);

                            Log.i(null, "Identifier check: " + ((int) scanRecord[startByte + 2] & 0xff) + " == " + 0x02);
                            Log.i(null, "Length of data : " + ((int) scanRecord[startByte + 3] & 0xff) + "==" + (0x15));
                            //Log.i(null, " iBeacon Identifier: " + (scanRecord[startByte + 2] & 0xff));
                            if (((int) scanRecord[startByte + 2] & 0xff) == 0x02 && //Identifies an iBeacon
                                    ((int) scanRecord[startByte + 3] & 0xff) == 0x15) { //Identifies correct data length
                                patternFound = true;
                                break;
                            }
                            startByte++;
                        }

                        if (patternFound) {
                            //Convert to hex String
                            byte[] uuidBytes = new byte[16];
                            System.arraycopy(scanRecord, startByte+4, uuidBytes, 0, 16);
                            String hexString = bytesToHex(uuidBytes);

                            //Here is your UUID
                            String uuid =  hexString.substring(0,8) + "-" +
                                    hexString.substring(8,12) + "-" +
                                    hexString.substring(12,16) + "-" +
                                    hexString.substring(16,20) + "-" +
                                    hexString.substring(20,32);

                            //Here is your Major value
                            int major = (scanRecord[startByte+20] & 0xff) * 0x100 + (scanRecord[startByte+21] & 0xff);

                            //Here is your Minor value
                            int minor = (scanRecord[startByte+22] & 0xff) * 0x100 + (scanRecord[startByte+23] & 0xff);

                            System.out.println("-------------output------ : " + uuid + " maj: " + major + " min: " + minor );
                        }
                    }
                });
            }
        };
    }

这是输出：

nexus 7(工作)：

02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ INSIDE ONLESCAN
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 0: 2
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 1: 1
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 2: 6
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 3: 26
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 4: -1
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 5: 76
02-03 22:50:43.811    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 6: 0
02-03 22:50:43.821    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 7: 2
02-03 22:50:43.821    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 8: 21
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 9: 47
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 10: 35
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 11: 68
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 12: 84
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 13: -49
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 14: 109
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 15: 74
02-03 22:50:43.831    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 16: 15
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 17: -83
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 18: -14
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 19: -12
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 20: -111
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 21: 27
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 22: -87
02-03 22:50:43.841    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 23: -1
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 24: -90
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 25: 0
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 26: 4
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 27: 0
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 28: 101
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 29: -76
02-03 22:50:43.851    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 30: 0
... (all 0's)
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ byte 61: 0
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 255 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 76==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 76 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 2==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 2 == 2
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 21==21
02-03 22:50:43.882    7303-7303/com.mapcushion.android.mapcushionpingl I/System.out﹕ -------------output------ : 2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6 maj: 4 min: 101
02-03 22:50:43.912    7303-7303/com.mapcushion.android.mapcushionpingl I/﹕ Calling stopLeScan

智能手表(不工作)：

2-03 22:53:37.374    6177-6189/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ onScanResult() - Device=E5:E0:20:CF:63:32 RSSI=-46
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ INSIDE ONLESCAN
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 0: 2
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 1: 1
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 2: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 3: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 4: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 5: 0
02-03 22:53:37.376    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 6: 0
... (all 0's)
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ byte 61: 0
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ scanned record: 62
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Identifier check: 0 == 2
02-03 22:53:37.378    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Length of data : 0==21
02-03 22:53:37.643    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Calling stopLeScan
02-03 22:53:37.643    6177-6177/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ stopLeScan()
02-03 22:53:37.743    6177-6177/com.mapcushion.android.mapcushionpingl I/﹕ Calling stopLeScan
02-03 22:53:37.743    6177-6177/com.mapcushion.android.mapcushionpingl D/BluetoothAdapter﹕ stopLeScan()

Answer 1

由于您向Nexus 7确认信标的Mac地址为E5:E0:20:CF:63:32，您可以看到手表的广告如下：

0201000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 

Nexus 7将其读取为一个非常不同的字节序列：

02011a0bff4c0009060102c0a801130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

我必须得出结论，手表没有正确地阅读BLE制造商的广告--它用两个字节截短它们。

问题可能是MTK6572 ROM，硬件，或两者的工作方式。为了其他人的利益，记录完整的手表配置可能是值得的。