Android 百度地图GPS获取定位经纬度

首先进入百度地图官网，点击开发文档-->Android定位SDK-->获取密匙，进入应用创建界面，创建新的应用。

准备好后，在“产品下载”栏目下载Android定位的包，将其打包放入项目中的libs文件目录。

之后就需要在AndroidManifest.xml中添加APK，在Application标签中添加：

  <meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="" />

APK为你申请应用时所给的密匙。

在AndroidManifest.xml中需要申请定位功能所需要的权限：

   <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />
    <!-- 这个权限用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <!-- 这个权限用于访问GPS定位 -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <!-- 用于访问wifi网络信息，wifi信息会用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <!-- 获取运营商信息，用于支持提供运营商信息相关的接口 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <!-- 用于读取手机当前的状态 -->
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <!-- 写入扩展存储，向扩展卡写入数据，用于写入离线定位数据 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <!-- 访问网络，网络定位需要上网 -->
    <uses-permission android:name="android.permission.INTERNET" />

首先初始化MyLBS类：

import android.app.Application;

import com.baidu.mapapi.CoordType;
import com.baidu.mapapi.SDKInitializer;

public class MyLBS extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        //在使用SDK各组件之前初始化context信息，传入ApplicationContext
        SDKInitializer.initialize(this);
        //自4.3.0起，百度地图SDK所有接口均支持百度坐标和国测局坐标，用此方法设置您使用的坐标类型.
        //包括BD09LL和GCJ02两种坐标，默认是BD09LL坐标。
        SDKInitializer.setCoordType(CoordType.BD09LL);
    }
}

其次到MainActivity类

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

import com.baidu.location.BDAbstractLocationListener;
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.BitmapDescriptorFactory;
import com.baidu.mapapi.map.MapStatus;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationConfiguration;
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 {

    LocationClient mLocationClient;  //定位客户端
    MapView mMapView;  //Android Widget地图控件
    BaiduMap mBaiduMap;
    boolean isFirstLocate = true;
    public LocationClientOption option=new LocationClientOption();

    TextView tv_Lat;  //纬度
    TextView tv_Lon;  //经度
    TextView tv_Add;  //地址

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //如果没有定位权限，动态请求用户允许使用该权限
        setContentView(R.layout.activity_main);
        mMapView = findViewById(R.id.bmapView);
        mBaiduMap = mMapView.getMap();
        mBaiduMap.setMyLocationEnabled(true);
        mLocationClient = new LocationClient(this);
//设置locationClientOption
        mLocationClient.setLocOption(option);
//注册LocationListener监听器
        MyLocationListener myLocationListener = new MyLocationListener();
        mLocationClient.registerLocationListener(myLocationListener);
//开启地图定位图层
        mLocationClient.start();
        mLocationClient.requestLocation();
        List<String> permissionList = new ArrayList<>();
        if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){
            permissionList.add(Manifest.permission.ACCESS_FINE_LOCATION);
        }
        if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED){
            permissionList.add(Manifest.permission.READ_PHONE_STATE);
        }
        if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){
            permissionList.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);
        }
        if(!permissionList.isEmpty()){
            String[] permissions =permissionList.toArray(new String[permissionList.size()]);
            ActivityCompat.requestPermissions(MainActivity.this, permissions, 1);
        }

        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
        }else {
            requestLocation();
        }

    }
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case 1:
                if (grantResults[0] != PackageManager.PERMISSION_GRANTED) {
                    Toast.makeText(this, "没有定位权限！", Toast.LENGTH_LONG).show();
                    finish();
                } else {
                    requestLocation();
                }
        }
    }
    private void requestLocation() {
        initLocation();
        mLocationClient.start();
    }
    private void initLocation() {  //初始化
        mLocationClient = new LocationClient(getApplicationContext());
        mLocationClient.registerLocationListener(new MyLocationListener());
        SDKInitializer.initialize(getApplicationContext());
        tv_Lat = findViewById(R.id.tv_Lat);
        tv_Lon = findViewById(R.id.tv_Lon);
        tv_Add = findViewById(R.id.tv_Add);

        //设置扫描时间间隔
        option.setScanSpan(1000);
        //设置定位模式，三选一
        option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);
        /*option.setLocationMode(LocationClientOption.LocationMode.Battery_Saving);
        option.setLocationMode(LocationClientOption.LocationMode.Device_Sensors);*/
        //设置需要地址信息
        option.setIsNeedAddress(true);
        //保存定位参数
        option.setOpenGps(true); // 打开gps
        option.setCoorType("bd09ll"); // 设置坐标类型
        mLocationClient.setLocOption(option);
    }
    //内部类，百度位置监听器
    private class MyLocationListener  implements BDLocationListener {
        @Override
        public void onReceiveLocation(BDLocation bdLocation) {
            tv_Lat.setText(bdLocation.getLatitude()+"");
            tv_Lon.setText(bdLocation.getLongitude()+"");
            tv_Add.setText(bdLocation.getAddrStr());
            if (bdLocation == null || mMapView == null){
                return;
            }
            MyLocationData locData = new MyLocationData.Builder()
                    .accuracy(bdLocation.getRadius())
                    // 此处设置开发者获取到的方向信息，顺时针0-360
                    .direction(bdLocation.getDirection()).latitude(bdLocation.getLatitude())
                    .longitude(bdLocation.getLongitude()).build();
            mBaiduMap.setMyLocationData(locData);

            if(bdLocation.getLocType()==BDLocation.TypeGpsLocation || bdLocation.getLocType()==BDLocation.TypeNetWorkLocation){
                navigateTo(bdLocation);
            }
        }
    }
    private void navigateTo(BDLocation bdLocation) {
        if(isFirstLocate){
            LatLng ll = new LatLng(bdLocation.getLatitude(),bdLocation.getLongitude());
            MapStatusUpdate update = MapStatusUpdateFactory.newLatLng(ll);
            mBaiduMap.animateMapStatus(update);
            isFirstLocate = false;
        }
    }
    @Override
    protected void onResume() {
        super.onResume();
        mMapView.onResume();
    }
    @Override
    protected void onPause() {
        super.onPause();
        mMapView.onResume();
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        mLocationClient.stop();
        mMapView.onDestroy();
    }
}

最后是activity_main

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <!--百度地图控件-->
    <com.baidu.mapapi.map.MapView
        android:id="@+id/bmapView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:clickable="true" />
    <!--位置文本布局的背景色代码的前2位代码为透明度-->
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="#e0000000"
        android:orientation="vertical" >
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="12dp"
            android:layout_marginTop="20dp"
            android:orientation="horizontal" >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="纬度："
                android:textColor="#ffffff"
                android:textSize="15dp" />
            <TextView
                android:id="@+id/tv_Lat"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text=""
                android:textColor="#ffffff"
                android:textSize="15dp" />
        </LinearLayout>
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="12dp"
            android:layout_marginTop="10dp"
            android:orientation="horizontal" >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="经度："
                android:textColor="#ffffff"
                android:textSize="15dp" />
            <TextView
                android:id="@+id/tv_Lon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text=""
                android:textColor="#ffffff"
                android:textSize="15dp" />
        </LinearLayout>
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:layout_marginLeft="12dp"
            android:layout_marginTop="10dp"
            android:orientation="horizontal" >
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="地址："
                android:textColor="#ffffff"
                android:textSize="15dp" />

            <TextView
                android:id="@+id/tv_Add"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text=""
                android:textColor="#ffffff"
                android:textSize="15dp" />
        </LinearLayout>
    </LinearLayout>
</FrameLayout>