package cn.efest;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothAdapter.LeScanCallback;
...
public class DeviceScanActivity extends ActionBarActivity {
...
   private void scanLeDevice(boolean enable) {
...
      adapter.startLeScan(this.mLeScanCallback);
...
   }
}

import com.iwit.bluetoothcommunication.util.encodeUtil;
...
public class MainActivity extends ActionBarActivity {
...
    private Pattern mChannelPattern;

    public MainActivity() {
...
        this.mChannelPattern = Pattern.compile("CH(\\d):(\\d),([0-9.]+)V,([0-9]+)mA,([0-9]+)per,(\\d)(\\d)", 2);
...
    }

    private void handleData(byte[] buf) {
        this.notifyString += StringUtil.hexStr2Str(encodeUtil.decodeMessage(buf).toUpperCase());

        /* RE Note: Is the device turning off? */
        if (this.notifyString.contains("AT+OK+SCROFF\r\n")) {
            this.closingOLED = false;
            invalidateOptionsMenu();
            this.notifyString = BuildConfig.FLAVOR;

        /* RE Note: Is this an update? */
        } else if (this.notifyString.contains("\r\n")) {
            String[] arr = this.notifyString.split("\r\n");
            if (arr.length >= REQUEST_ENABLE_BT) {
                parseData(arr[0]);
...
            }
        }
    }

    private void parseData(String data) {
        if (data != null) {
            Matcher m = this.mChannelPattern.matcher(data);
            List<SlotStatus> list = new ArrayList(6);

            while (m.find()) {
                SlotStatus cs = new SlotStatus();
                cs.setName("Slot" + m.group(REQUEST_ENABLE_BT));
                cs.setOrder(Integer.parseInt(m.group(REQUEST_ENABLE_BT)));
                cs.setStatus(Integer.parseInt(m.group(2)));
                cs.setDianYe(m.group(3));
                cs.setDianLiu(Integer.parseInt(m.group(4)));
                cs.setPercent(Integer.parseInt(m.group(5)));
                list.add(cs);
            }
...
        }
    }
}

package com.iwit.bluetoothcommunication.util;

...
public class encodeUtil {
    public static String decodeMessage(byte[] reciverBytes) {
        int i;
        String decodeData = BuildConfig.FLAVOR;

        int tou = reciverBytes[0];
        reciverBytes[1] = (byte) ((reciverBytes[1] ^ tou) - 1);

        int Onum = tou ^ reciverBytes[2];
        reciverBytes[2] = (byte) Onum;

        for (i = 3; i < reciverBytes.length; i++) {
            reciverBytes[i] = (byte) (reciverBytes[i] ^ Onum);
        }

        for (i = 3; i < reciverBytes.length; i++) {
            int num = reciverBytes[i];
            if (num < 0) {
                num += AccessibilityNodeInfoCompat.ACTION_NEXT_AT_MOVEMENT_GRANULARITY; // ACTION_NEXT_AT_MOVEMENT_GRANULARITY = 256
                reciverBytes[i] = (byte) num;
            }

            String mm = Integer.toHexString(num);
            if (mm.length() == 1) {
                mm = "0" + mm;
            }
            decodeData = new StringBuilder(String.valueOf(decodeData)).append(mm).toString();
        }

        return decodeData;
    }
..
}

public static byte[] encodeMessage(byte[] bytes) {
    byte[] encodeByte = new byte[(bytes.length + 3)];

    encodeByte[0] = (byte) 84;
    encodeByte[1] = (byte) bytes.length;
    encodeByte[1] = (byte) (encodeByte[0] ^ (encodeByte[1] + 1));

    int num = (int) (Math.random() * 10.0d);
    encodeByte[2] = (byte) (encodeByte[0] ^ num);

    for (int i = 0; i < bytes.length; i++) {
        encodeByte[i + 3] = (byte) (bytes[i] ^ num);
    }

    for (byte b : encodeByte) {

    }

    return encodeByte;
}

private void setCurrent(int order, int value) {
    SampleGattAttributes.sendMessage(getAppContext().getBluetoothService().getBluetoothGatt(), StringUtil.str2HexStr("AT+CRT" + order + BuildConfig.FLAVOR + value + "\r\n"));
...
}

private void queryChart(int channel) {
    SampleGattAttributes.sendMessage(getAppContext().getBluetoothService().getBluetoothGatt(), StringUtil.str2HexStr("AT+CH" + channel + "+chart\r\n"));
    this.notifyString = BuildConfig.FLAVOR;
}