检索的Andr​​oid BluetoothLE设备信息（主要/次要/识别/ ProximityUUID）上扫描？ [英] Retrieving Android BluetoothLE device information (Major / minor / identifier / ProximityUUID) on scan?

问题描述

我一直在环顾四周，不幸的是，Android的ibeacon库已经去precated，所以我试图做到这一点本土。我已经实现了BluetoothAdapter.LeScanCallback和内置onLeScan（）方法将火当设备被拿起。我想读取该设备的ProximityUUID，主要和次要的特点和标识。我不知道如何获取这些信息了Android的对象BluetoothDevice类的。

I've been looking around and unfortunately the android ibeacon library has been deprecated, so I am attempting to do this native. I have implemented the BluetoothAdapter.LeScanCallback and the built in onLeScan() method that will fire when a device is picked up. I would like to read in that device's ProximityUUID, major and minor characteristics and identifier. I'm not sure how to get that information out of the Android object BluetoothDevice.

我如何提取该信息（ProximityUUID，主要，次要，和放大器;识别特征）？从Android BluetoothDevice类，或有另一种方式来做到这一点。

How do I extract that information (ProximityUUID, major, minor, & identifier characteristics) from the Android BluetoothDevice, or is there another way to do it?

谢谢！

推荐答案

您可以参考此的帖子要充分了解这些字节指的 LeScanCallback 的。 这是我的code解析所需的全部信息：

you can refer this post to fully understand what those bytes means in LeScanCallback . And this is my code to parse all information needed:

// an object with all information embedded from LeScanCallback data
public class ScannedBleDevice implements Serializable {
    // public BluetoothDevice BLEDevice;

    /**
    * Returns the hardware address of this BluetoothDevice.
    * <p>
    * For example, "00:11:22:AA:BB:CC".
    * 
    * @return Bluetooth hardware address as string
    */
    public String MacAddress;

    public String DeviceName;
    public double RSSI;
    public double Distance;

    public byte[] CompanyId;
    public byte[] IbeaconProximityUUID;
    public byte[] Major;
    public byte[] Minor;
    public byte Tx;

    public long ScannedTime;
}

// use this method to parse those bytes and turn to an object which defined proceeding.
// the uuidMatcher works as a UUID filter, put null if you want parse any BLE advertising data around.
private ScannedBleDevice ParseRawScanRecord(BluetoothDevice device,
        int rssi, byte[] advertisedData, byte[] uuidMatcher) {
    try {
        ScannedBleDevice parsedObj = new ScannedBleDevice();
        // parsedObj.BLEDevice = device;
        parsedObj.DeviceName = device.getName();
        parsedObj.MacAddress = device.getAddress();
        parsedObj.RSSI = rssi;
        List<UUID> uuids = new ArrayList<UUID>();
        int skippedByteCount = advertisedData[0];
        int magicStartIndex = skippedByteCount + 1;
        int magicEndIndex = magicStartIndex
                + advertisedData[magicStartIndex] + 1;
        ArrayList<Byte> magic = new ArrayList<Byte>();
        for (int i = magicStartIndex; i < magicEndIndex; i++) {
            magic.add(advertisedData[i]);
        }

        byte[] companyId = new byte[2];
        companyId[0] = magic.get(2);
        companyId[1] = magic.get(3);
        parsedObj.CompanyId = companyId;

        byte[] ibeaconProximityUUID = new byte[16];
        for (int i = 0; i < 16; i++) {
            ibeaconProximityUUID[i] = magic.get(i + 6);
        }

        if (uuidMatcher != null) {
            if (ibeaconProximityUUID.length != uuidMatcher.length) {
                Log.e(LOG_TAG,
                        "Scanned UUID: "
                                + Util.BytesToHexString(
                                        ibeaconProximityUUID, " ")
                                + " filtered by UUID Matcher "
                                + Util.BytesToHexString(uuidMatcher, " ")
                                + " with length requirment.");
                return null;
            }

            for (int i = 0; i < 16; i++) {
                if (ibeaconProximityUUID[i] != uuidMatcher[i]) {
                    Log.e(LOG_TAG,
                            "Scanned UUID: "
                                    + Util.BytesToHexString(
                                            ibeaconProximityUUID, " ")
                                    + " filtered by UUID Matcher "
                                    + Util.BytesToHexString(uuidMatcher,
                                            " "));
                    return null;
                }
            }

        }

        parsedObj.IbeaconProximityUUID = ibeaconProximityUUID;

        byte[] major = new byte[2];
        major[0] = magic.get(22);
        major[1] = magic.get(23);
        parsedObj.Major = major;

        byte[] minor = new byte[2];
        minor[0] = magic.get(24);
        minor[1] = magic.get(25);
        parsedObj.Minor = minor;

        byte tx = 0;
        tx = magic.get(26);
        parsedObj.Tx = tx;

        parsedObj.ScannedTime = new Date().getTime();
        return parsedObj;
    } catch (Exception ex) {
        Log.e(LOG_TAG, "skip one unknow format data...");
        // Log.e(LOG_TAG,
        // "Exception in ParseRawScanRecord with advertisedData: "
        // + Util.BytesToHexString(advertisedData, " ")
        // + ", detail: " + ex.getMessage());
        return null;
    }
}

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