百度地图定位LBS

根据官方文档，开发百度地图定位APP，显示出当前位置坐标

具体步骤： 1.创建一个Android工程（LBS）

2.登录百度开发者账号创建应用

进入API控制台后，点击创建应用 使用 keytool（jdk自带工具）获取SHA1:

开始填写相关信息，并最终获得AK

3.添加SDK（jar + so）通过Gradle 集成sdk

1. SDK下载
   
   

2.导入jar包和其他文件

4.MainActivity.java:

package com.example.lbs;

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

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

public class MainActivity extends AppCompatActivity {
    public LocationClient mLocationClient;
    private TextView positionText;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        positionText = findViewById(R.id.position_text_view);
        mLocationClient = new LocationClient(getApplicationContext());
        mLocationClient.registerLocationListener(new MyLocationListener());
        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);
        } else {
            requstLocation();
        }
    }

    private void requstLocation() {
        initLocation();
        mLocationClient.start();
    }

    private void initLocation() {
        LocationClientOption option = new LocationClientOption();
        option.setScanSpan(5000);
        mLocationClient.setLocOption(option);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mLocationClient.stop();
    }

    @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, "权限呢？？？", Toast.LENGTH_SHORT).show();
                            finish();
                            return;
                        }
                    }
                    requstLocation();
                } else {
                    Toast.makeText(this, "未知错误！", Toast.LENGTH_SHORT).show();
                    finish();
                }
                break;
            default:
                break;
        }
    }

    private class MyLocationListener extends BDAbstractLocationListener {
        @Override
        public void onReceiveLocation(final BDLocation bdLocation) {
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    StringBuilder currentPosition = new StringBuilder();
                    currentPosition.append("纬度:").append(bdLocation.getLatitude()).append("\n");
                    currentPosition.append("经线:").append(bdLocation.getLongitude()).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");
                    }
                    positionText.setText(currentPosition);
                }
            });
        }

        @Override
        public void onConnectHotSpotMessage(String s, int i) {
            super.onConnectHotSpotMessage(s, i);
        }
    }
}

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.lbs">
    <!-- 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" />
    <!-- 这个权限用于获取wifi的获取权限，wifi信息会用来进行网络定位-->
    <uses-permission android:name="android.permission.CHANGE_WIFI_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" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WAKE_LOCK"/>
    <application
        android:usesCleartextTraffic="true"
        android:requestLegacyExternalStorage="true"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.LBS"
        >
        <meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="nrRiffVr1OQ6Xq6IdUiCo5KlgFVVudH8"/>
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:name="com.baidu.location.f" android:enabled="true" android:process=":remote"> </service>
    </application>
</manifest>

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <com.baidu.mapapi.map.MapView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/bmapView"
        android:clickable="true"></com.baidu.mapapi.map.MapView>
<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>

5.截图