Android Baidu map GPS positioning

1. Get a key on Baidu map development platform

http://lbsyun.baidu.com/apiconsole/key/create

SHA1 code obtained:

After filling in and submitting, a key will be automatically generated and the copy will be retained.

Second, download the Baidu map SDK
http://lbsyun.baidu.com/sdk/download?selected=location_all

Download the basic positioning and basic map, unzip it for backup

Third, the creation process, the project name should correspond to the package name filled in the first step (you can also create the project before the first step)

1. Copy the SDK package downloaded in the second step to the process-related directory

Manifest file

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.administrator.baidulbs_test">
    <!--需要的权限-->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
    <uses-permission android:name="android.permission.WAKE_LOCK"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <!--需要的name为百度LBS固定格式-->
        <!--值为在第一步获取的key-->
        <meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="VlDpPAL7CHBDgY7IrqkpzsyKCtxhAg8c"
            />
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!--百度导航需要申明的一个服务-->
        <service android:name="com.baidu.location.f" android:enabled="true" android:process=":remote">
        </service>
    </application>

</manifest>

Layout file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/abc"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <com.baidu.mapapi.map.MapView
        android:id="@+id/baidu_map"
        android:layout_height="match_parent"
        android:layout_width="match_parent" />
</LinearLayout>

Activity
official API address: http://wiki.lbsyun.baidu.com/cms/androidloc/doc/v7.0/index.html

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
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;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    public LocationClient locationClient;
    private TextView textView;
    private MapView mapView;
    private BaiduMap baiduMap;
    private boolean isFirstLocate = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        locationClient = new LocationClient(getApplicationContext());
        locationClient.registerLocationListener(new MyLocationListener());
        SDKInitializer.initialize(getApplicationContext());//要在setContentView调用之前初始化
        setContentView(R.layout.activity_main);
        mapView = (MapView) findViewById(R.id.baidu_map);
        textView = (TextView) findViewById(R.id.abc);
        baiduMap = mapView.getMap();//地图总控制台
        baiduMap.setMyLocationEnabled(true);
        List<String> list = new ArrayList<>();
        //运行时权限，没有注册就重新注册
        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            list.add(Manifest.permission.ACCESS_FINE_LOCATION);
        }
        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
            list.add(Manifest.permission.READ_PHONE_STATE);
        }
        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            list.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
        }
        if (!list.isEmpty()) {//没有权限就添加
            String[] permissions = list.toArray(new String[list.size()]);//如果list不为空，就调用ActivityCompat.requestPermissions添加权限
            ActivityCompat.requestPermissions(MainActivity.this, permissions, 1);
        } else {//有相关权限则执行程序
            requestLocation();
        }
    }

    private void requestLocation() {
        init();
        locationClient.start();
    }

    private void init() {
        LocationClientOption option = new LocationClientOption();
        option.setIsNeedAddress(true);
        option.setScanSpan(5000); //设置发起定位请求的间隔时间为5000ms
        locationClient.setLocOption(option);
    }

    private void navigateTo(BDLocation location) {
        if (isFirstLocate) {
            Toast.makeText(this, "维度：" + location.getLatitude() + "经线：" + location.getLongitude(), Toast.LENGTH_SHORT).show();
            LatLng ll = new LatLng(location.getLatitude(), location.getLongitude());//获取当前经纬度并且传递给LatLng
            MapStatusUpdate update = MapStatusUpdateFactory.newLatLng(ll);
            baiduMap.animateMapStatus(update);//将地图定位更新到当前位置
            update = MapStatusUpdateFactory.zoomTo(16f);//地图缩放倍数
            baiduMap.animateMapStatus(update);
            isFirstLocate = false;
        }
        MyLocationData.Builder builder = new MyLocationData.Builder();   //将当前位置在地图上标记出来
        builder.latitude(location.getLatitude());//传入经纬度
        builder.longitude(location.getLongitude());//传入经纬度
        MyLocationData locationData = builder.build();
        baiduMap.setMyLocationData(locationData);
    }

    @Override
    protected void onResume() {
        super.onResume();
        mapView.onResume();
    }

    @Override
    protected void onPause() {
        super.onPause();
        mapView.onPause();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        locationClient.stop();
        mapView.onDestroy();
        baiduMap.setMyLocationEnabled(false);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case 1:
                if (grantResults.length > 0) {
                    for (int result : grantResults) {
                        if (result != PackageManager.PERMISSION_GRANTED) {
                            Toast.makeText(this, "用户取消权限，程序运行失败", Toast.LENGTH_SHORT).show();
                            finish();
                            return;
                        }
                    }
                    requestLocation();//调用定位
                } else {
                    Toast.makeText(this, "发生未知错误", Toast.LENGTH_SHORT).show();
                    finish();
                }
                break;
            default:
        }
    }

    public class MyLocationListener implements BDLocationListener {
        @Override
        public void onReceiveLocation(BDLocation bdLocation) {
            {//定位信息获取
                StringBuilder currentPosition = new StringBuilder();
                currentPosition.append("纬度：").append(bdLocation.getLatitude()).append("\n");
                currentPosition.append("经线：").append(bdLocation.getLongitude()).append("\n");
                currentPosition.append("国家：").append(bdLocation.getCountry()).append("\n");
                currentPosition.append("省：").append(bdLocation.getProvince()).append("\n");
                currentPosition.append("市：").append(bdLocation.getCity()).append("\n");
                currentPosition.append("区：").append(bdLocation.getDirection()).append("\n");
                currentPosition.append("街道：").append(bdLocation.getStreet()).append("\n");
                currentPosition.append("定位方式：");
                if (bdLocation.getLocType() == BDLocation.TypeGpsLocation) {
                    currentPosition.append("GPS");
                } else if (bdLocation.getLocType() == BDLocation.TypeNetWorkLocation) {
                    currentPosition.append("网络");
                } else {
                    currentPosition.append("Error:" + bdLocation.getLocType());
                }
                textView.setText(currentPosition);
            }
            if (bdLocation.getLocType() == BDLocation.TypeGpsLocation
                    || bdLocation.getLocType() == BDLocation.TypeNetWorkLocation) {
                navigateTo(bdLocation);
            }
        }
    }
}

Renderings