android 百度地图GPS定位

一、先在百度地图开发平台获取一个key

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

SHA1码获得：

填写完成提交后会自动生成一个key，拷贝留用。

二、下载百度地图SDK
http://lbsyun.baidu.com/sdk/download?selected=location_all

下载基础定位和基础地图，解压备用

三、创建过程，工程名字要和第一步填写的包名对应（也可以先创建工程再进行第一步）

1、将第二步下载的SDK包拷贝到过程相关目录

清单文件

<?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>

布局文件

<?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
官方API地址：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);
            }
        }
    }
}

效果图