Android基于ibeacon实现蓝牙考勤功能

说明：

ibeacon设备会主动发射蓝牙信号，当手机打开蓝牙靠近ibeacon设备时，就会收到设备发送的蓝牙信号，这时只需要根据ibeacon设备的uuid、major、minor、mac这四个值，就可以确认是哪一台ibeacon设备，然后调用服务端考勤接口(ibeacon设备只为了确认手机在考勤机边上，不需要发送考勤数据到ibeacon设备上)，即可实现蓝牙考勤。

一、添加静态权限(在AndroidManifest.xml文件中添加，需要蓝牙和定位权限)

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />

二、检测与开启蓝牙、GPS

1.是否支持蓝牙：

 if (!context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
      ToastUtils.show("本机不支持蓝牙功能, 无法蓝牙打卡");
      ((Activity) context).finish();
      return false;
    }
    final BluetoothManager bm = (BluetoothManager) context.getSystemService(Context.BLUETOOTH_SERVICE);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
      mBleAdapter = bm.getAdapter(); //mBleAdapter为全局变量，为BluetoothAdapter对象
    }
    if (bleAdapter == null) {
      ToastUtils.show("本机不支持低功耗蓝牙功能, 无法蓝牙打卡");
      ((Activity) context).finish();
      return false;
    }
    return true;

2.是否开启GPS：

LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
boolean gps = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
boolean network = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (gps || network) {
   return true;
}
return false;

3.开启GPS：

Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
context.startActivityForResult(intent, ActivityCode.ACTIVITY_CODE_GPS);

4.开启蓝牙：

Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
((Activity) mContext).startActivityForResult(enableBtIntent, ActivityCode.ACTIVITY_CODE_OPEN_BLE);

三、动态申请蓝牙权限

private boolean check(Context context, String permission) {
    return ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED;

  }

  /**
   * 权限申请
   */
  private void searchBle(){
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
      if (!check(mContext, Manifest.permission.ACCESS_FINE_LOCATION) || !check(mContext, Manifest.permission.ACCESS_COARSE_LOCATION)) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, ACCESS_LOCATION);
      } else {
        //执行蓝牙搜索
      }
    } else {
      //执行蓝牙搜索
    }
  }

  @Override
  public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    switch (requestCode) {
      case ACCESS_LOCATION:
        if (hasAllPermissionsGranted(grantResults)) {
          //执行蓝牙搜索
        } else {
          ToastUtils.show("请开启权限");
        }
        break;
    }
  }

四.搜索蓝牙

 /**
 * 搜索蓝牙
*/
  public void searchBle() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
      mBleAdapter.startLeScan(mLeScanCallback);
    }
  }

  /**
   * 搜索结果回调
   */
  private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {

    @Override
    public void onLeScan(final BluetoothDevice device, int rssi, byte[] scanRecord) {
      //fromScanData方法将ibeacon数据转换为实体对象，内部包括了uuid、major、minor、mac、distance等信息
      final BleUtil.DeviceInfo info = BleUtil.fromScanData(device, rssi, scanRecord);
      if (info == null || TextUtils.isEmpty(info.uuid) || info.major <= 0 || info.minor <= 0 || TextUtils.isEmpty(info.mac)) {
        return;
      }
      if (mUuids == null || mUuids.isEmpty()) {
        //此处关闭蓝牙搜索
        mBleAdapter.stopLeScan(mLeScanCallback);
        return;
      }
      for (MachineInfo machineInfo : mUuids) {
        if (info.uuid.equalsIgnoreCase(machineInfo.uuid) &&
            (!TextUtils.isEmpty(machineInfo.major) && info.major == Integer.parseInt(machineInfo.major)) &&
            (!TextUtils.isEmpty(machineInfo.minor) && info.minor == Integer.parseInt(machineInfo.minor)) &&
            info.mac.equalsIgnoreCase(machineInfo.mac) && info.distance <= MAX_DISTANCE) {
          mConnected = true;
          //回调通知外部，界面更新可考勤状态
          if (mListener != null) {
            mListener.onConnected();
          }
          //此处是延时调用stopLeScan关闭蓝牙搜索
          beginTimer();
          break;
        }
      }
    }
  };

五、考勤

此步调用服务端提供的API增加考勤记录

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