android studio 网络定位城市名称

<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/qw"/>
<TextView
android:id="@+id/tv_loc_info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="40dp" />

package com.example.baidu;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;

public class MainActivity extends AppCompatActivity {
private ImageView image;
private TextView mTv = null;
public LocationClient mLocationClient = null; //初始化LocationClient类
public MyLocationListener myListener = new MyLocationListener();

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//在使用SDK各组件之前初始化context信息，传入ApplicationContext
//声明LocationClient类
mLocationClient = new LocationClient(getApplicationContext());
mLocationClient.registerLocationListener(myListener); //注册监听函数
image=(ImageView)findViewById(R.id.image);  //初始化图片
mTv = (TextView) findViewById(R.id.tv_loc_info); //初始化文本
setLocationOption(); //定义setLocationOption()方法
mLocationClient.start(); //执行定位
}

public class MyLocationListener implements BDLocationListener {
@Override
public void onReceiveLocation(BDLocation location) {
//将获取的City赋值给txt
/**
*1.国家:location.getCountry()
* 2.城市:location.getCity()
* 3.区域(例：天河区)：location.getDistrict()
* 4.地点(例：风信路)：location.getStreet()
* 5.详细地址：location.getAddrStr()
*/
mTv.setText(location.getCity()+location.getDistrict());
Toast.makeText(MainActivity.this,"网络定位成功"+
location.getDirection(),Toast.LENGTH_LONG).show();
}
public void onReceivePoi(BDLocation arg0) {
}
}

//执行onDestroy()方法，停止定位
@Override
public void onDestroy() {
mLocationClient.stop();
super.onDestroy();
}

//设置相关参数
private void setLocationOption() {
LocationClientOption option = new LocationClientOption();
option.setOpenGps(true); //打开gps
option.setAddrType("all");//返回定位结果包含地址信息
option.setPriority(LocationClientOption.NetWorkFirst); // 设置网络优先
option.setPriority(LocationClientOption.GpsFirst);       //gps
option.disableCache(true);//禁止启用缓存定位
mLocationClient.setLocOption(option);
}

}