指纹定位蓝牙打点工具

  最近在研究指纹定位，实验室只有自己在做这个方向，只好自己写了一个IBeacon蓝牙指纹打点工具。不是专门搞Android的，代码有点粗糙。使用的时候要先把IBeacon的minor设置成0-5。如果蓝牙节点比较多自己修改下代码。输入坐标和你想要的扫描时间即可以记录附近IBeacon的RSSI并记录到文本文件中。代码下方有代码下载链接。

  顺便无聊测试了下ArrayList和LinkedList读写速度的区别。没想到LinkedList的添加写入速度居然比ArrayList快10倍。

代码块

public class MainActivity extends AppCompatActivity {    private static int beacon_number =6;    private String hexScanRecord = "error";    private int major = -999;    private int minor =-999;    private int get_rssi = -999;    private String get_uuid = "error";    private BluetoothAdapter mBluetoothAdapter;    private static final int REQUEST_ENABLE_BT = 2;    private double dist = 9999;    private int txPower = -59;    private beacon[] myIbeacon = new beacon[beacon_number+1];//有5個 beacon    private Button btn_get_position;    private Button averageButton;    private Button tButton;    private EditText xtext;    private EditText ytext;    private EditText ztext;    private int T;  //蓝牙扫描周期    private boolean averageRssiIsEnable=false; //均值记录    private boolean loopEnable=false;    private boolean detailEnable=false;    private int loop;    private int []toataltime={0,0,0,0,0,0,0};    private int RSSI[]={0,0,0,0,0,0,0};    private int num=20; //循环记录次数；    private List list = new LinkedList();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        xtext=(EditText)findViewById(R.id.editText);        ytext=(EditText)findViewById(R.id.editText2);        ztext=(EditText)findViewById(R.id.editText3);        btn_get_position = (Button)findViewById(R.id.button);        averageButton=(Button)findViewById(R.id.button2);        tButton=(Button)findViewById(R.id.button3);        btn_get_position.setOnClickListener(new Button.OnClickListener(){            @Override            public void onClick(View v) {                detailEnable=true;                T=  Integer.parseInt(ztext.getText().toString());                Log.v("=====>", "扫描周期："+T);                find_beacon();            }        });        averageButton.setOnClickListener(new Button.OnClickListener(){            @Override            public void onClick(View v) {                averageRssiIsEnable=true;                T=  Integer.parseInt(ztext.getText().toString());               // logAverage=false;                find_beacon();             //   Log.v("=====>", "Start btn");            }        });        tButton.setOnClickListener(new Button.OnClickListener(){            @Override            public void onClick(View v) {                Log.v("=====>", "loop start");                averageRssiIsEnable=true;                loopEnable=true;                loop=1;                T=  Integer.parseInt(ztext.getText().toString());                find_beacon();            }        });    }    private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {        @Override        public void onLeScan(final BluetoothDevice device, final int rssi, final byte[] scanRecord) {           // Log.v("=====>", "Start OnLeScan");            int startByte = 2;            boolean patternFound = false;            while (startByte <= 5) {                if (    ((int) scanRecord[startByte + 2] & 0xff) == 0x02 && //Identifies an iBeacon                        ((int) scanRecord[startByte + 3] & 0xff) == 0x15) { //Identifies correct data length                    patternFound = true;                    hexScanRecord = bytesToHex(scanRecord);                    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                major = (scanRecord[startByte+20] & 0xff) * 0x100 + (scanRecord[startByte+21] & 0xff);                //Here is your Minor value                minor = (scanRecord[startByte+22] & 0xff) * 0x100 + (scanRecord[startByte+23] & 0xff);                get_uuid = uuid;                get_rssi = rssi;                myIbeacon[minor] = new beacon(uuid ,major , minor ,txPower , rssi ,dist); //beacon类有什么用还没想好，留着应该会有用                if (detailEnable==true) {                    list.add(minor+"\t"+rssi);                    //write(minor, myIbeacon[minor].get_rssi(),"RSSI");//RSSI写入TXT文件                    Log.v("=====>", "rssi:"+minor+":"+rssi);                }                else  {                        RSSI[minor] = RSSI[minor] + myIbeacon[minor].get_rssi();                        toataltime[minor]++;                    }            }        }    };    //写入TXT    public void write(int minor,int rssi,String name){        String Rssi = Environment.getExternalStorageDirectory()                + File.separator + name+minor+".txt";        File file = new File(Rssi);        try {            if (!file.exists()) {                file.createNewFile();            }            FileWriter pw = new FileWriter(file, true);            pw.write(xtext.getText().toString()+"\t"+ytext.getText().toString()+"\t"+minor+"\t"+rssi+"\n");            pw.flush();            pw.close();        } catch (IOException e) {            e.printStackTrace();        }    }    public void write(List list){        Iterator it = list.iterator();        String Rssi = Environment.getExternalStorageDirectory()                + File.separator+"rssi.txt";        File file = new File(Rssi);        try {            if (!file.exists()) {                file.createNewFile();            }            FileWriter pw = new FileWriter(file, true);            while(it.hasNext()) {                pw.write(xtext.getText().toString()+"\t"+ytext.getText().toString()+"\t"+it.next()+"\n");            }            pw.flush();            pw.close();        } catch (IOException e) {            e.printStackTrace();        }    }    /**     * bytesToHex method     * Found on the internet     * http://stackoverflow.com/a/9855338     */    static final char[] hexArray = "0123456789ABCDEF".toCharArray();    private static String bytesToHex(byte[] bytes) {        char[] hexChars = new char[bytes.length * 2];        for ( int j = 0; j < bytes.length; j++ ) {            int v = bytes[j] & 0xFF;            hexChars[j * 2] = hexArray[v >>> 4];            hexChars[j * 2 + 1] = hexArray[v & 0x0F];        }        return new String(hexChars);    }    public void find_beacon()    {        //final BluetoothAdapter mBluetoothAdapter;        BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);        mBluetoothAdapter = bluetoothManager.getAdapter();        mBluetoothAdapter.startLeScan(mLeScanCallback);        /**         * Checks if Bluetooth is enabled on device         * Use this within and Activity         */        if (mBluetoothAdapter == null || !mBluetoothAdapter.isEnabled()) {            Intent enableBluetooth = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);            startActivityForResult(enableBluetooth, REQUEST_ENABLE_BT);        }        /**         * Stop after T seconds         */        Handler handler = new Handler();        handler.postDelayed(new Runnable() {            @Override            public void run() {                mBluetoothAdapter.stopLeScan(mLeScanCallback);                if (detailEnable=true){                    write(list);                    detailEnable=false;                    list.clear();                    Toast.makeText(getApplicationContext(), R.string.logCompleted,                            Toast.LENGTH_SHORT).show();                }                if (averageRssiIsEnable==true) {                    for (int i=2;i<6;i++) {   //我的Ibeacon minor 设置的2-5，所以这里i从2开始                        try {                            RSSI[i] = RSSI[i] / toataltime[i];                            write(i, RSSI[i], "aveRSSI");//RSSI写入TXT文件                            toataltime[i] = 0;                            RSSI[i] = 0;                        }                        catch (Exception ex){                        }                    }                    averageRssiIsEnable=false;                    Toast.makeText(getApplicationContext(), R.string.logCompleted,                            Toast.LENGTH_SHORT).show();                }                if (loopEnable==true&(loop<20)){                    loop++;                    find_beacon();                    Toast.makeText(getApplicationContext(), "第"+loop+"次记录",                            Toast.LENGTH_SHORT).show();                    if (loop==19){                        loopEnable=false;                    }                }            }        }, (T) );    }}

CSDN下载链接IBeacon蓝牙指纹定位打点工具