帮我写一个Android百度定位的工具类 实用性强的

好的，以下是一个简单的Android百度定位的工具类。

前提条件：
1. 需要在AndroidManifest.xml文件中添加定位权限：ACCESS_FINE_LOCATION、ACCESS_COARSE_LOCATION
2. 需要在百度开发者平台创建应用并获取到ak

public class BaiduLocationUtils {

    private static final String TAG = "BaiduLocationUtils";
    private static final int LOCATION_CODE = 1001;

    private Context mContext;
    private LocationClient mLocationClient;
    private LocationCallback mLocationCallback;

    public BaiduLocationUtils(Context context) {
        mContext = context;
        mLocationClient = new LocationClient(mContext);
        mLocationCallback = new LocationCallback();
        mLocationClient.registerLocationListener(mLocationCallback);
    }

    public void startLocation() {
        if (!checkPermission()) {
            return;
        }
        LocationClientOption option = new LocationClientOption();
        option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);
        option.setCoorType("bd09ll");
        option.setScanSpan(1000);
        option.setOpenGps(true);
        option.setIsNeedAddress(true);
        mLocationClient.setLocOption(option);
        mLocationClient.start();
    }

    public void stopLocation() {
        mLocationClient.stop();
    }

    private boolean checkPermission() {
        if (ContextCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED
                && ContextCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions((Activity) mContext,
                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION},
                    LOCATION_CODE);
            return false;
        }
        return true;
    }

    private class LocationCallback extends BDAbstractLocationListener {

        @Override
        public void onReceiveLocation(BDLocation bdLocation) {
            if (bdLocation == null) {
                return;
            }
            int locType = bdLocation.getLocType();
            if (locType == BDLocation.TypeGpsLocation
                    || locType == BDLocation.TypeNetWorkLocation
                    || locType == BDLocation.TypeOffLineLocation) {
                stopLocation();
                double latitude = bdLocation.getLatitude();
                double longitude = bdLocation.getLongitude();
                String address = bdLocation.getAddrStr();
                String city = bdLocation.getCity();
                if (TextUtils.isEmpty(address)) {
                    address = "定位失败";
                }
                Log.i(TAG, "latitude: " + latitude + ", longitude: " + longitude + ", address: " + address + ", city: " + city);
                // TODO: 定位成功后的操作
            }
        }
    }

}

使用时，在需要定位的地方调用startLocation()方法即可开始定位，调用stopLocation()方法结束定位。当定位成功时，会回调LocationCallback中的onReceiveLocation()方法，其中包含了定位的经纬度、地址和城市信息。在这个方法中可以根据需要进行相应的处理。