應用場景：實現APP的網路定位功能

1.整合SDK

去百度建立應用，獲取到AK，下載定位SDK,把裡面的jar包新增到libs下。其他os檔案就放在main下新建的jniLilbs裡，如圖：

2.程式碼貼出

package com.jin.baidudemo;

import android.Manifest;
import android.content.pm.PackageManager;
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.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 = null;
    private MyLocationListener myListener = new MyLocationListener();

    TextView tv_location;

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

        tv_location = (TextView) findViewById(R.id.tv_location);

        //宣告LocationClient類
        mLocationClient = new LocationClient(getApplicationContext());

        //註冊監聽函式
        mLocationClient.registerLocationListener(myListener);

        init();  // 初始化配置

        //存放許可權的集合
        List<String> permissionList=new ArrayList<>();
        //判斷是否有許可權
        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[] permission = permissionList.toArray(new String[permissionList.size()]);
            ActivityCompat.requestPermissions(MainActivity.this,permission,1);
        }else {
            request();
        }
    }

    /**
     * 初始化配置
     */
    private void init() {
        LocationClientOption option = new LocationClientOption();
        option.setIsNeedAddress(true);
        mLocationClient.setLocOption(option);
    }

    /**
     * 開始請求
     */
    public void request(){
        mLocationClient.start();
    }

    /**
     * 百度定位的響應介面
     */
    public class MyLocationListener extends BDAbstractLocationListener {
        @Override
        public void onReceiveLocation(BDLocation location) {

            String addr = location.getAddrStr();    //獲取詳細地址資訊
            String country = location.getCountry();    //獲取國家
            String province = location.getProvince();    //獲取省份
            String city = location.getCity();    //獲取城市
            String district = location.getDistrict();    //獲取區縣
            String street = location.getStreet();    //獲取街道資訊
            tv_location.setText("address==" + addr + "       國家=" + country + "    省=" + province + "  市=" + city + "    區=" + district + "    街道=" + street);
        }
    }

    /**
     * 獲取動態許可權的回撥
     * @param requestCode
     * @param permissions
     * @param grantResults
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode){
            case 1:
                if (grantResults.length>0){
                    for (int results : grantResults){
                        if (results!=PackageManager.PERMISSION_GRANTED){
                            Toast.makeText(MainActivity.this,"必須開啟許可權才能使用！",Toast.LENGTH_SHORT).show();
                            finish();
                            return;
                        }
                    }
                    request();
                }else {
                    Toast.makeText(MainActivity.this,"未知錯誤！！",Toast.LENGTH_SHORT).show();
                    finish();
                }
                break;
                default:break;
        }
    }
}
 

3.許可權

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.jin.baidudemo">

    <!-- 這個許可權用於進行網路定位-->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
    <!-- 這個許可權用於訪問GPS定位-->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
    <!-- 用於訪問wifi網路資訊，wifi資訊會用於進行網路定位-->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
    <!-- 獲取運營商資訊，用於支援提供運營商資訊相關的介面-->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
    <!-- 這個許可權用於獲取wifi的獲取許可權，wifi資訊會用來進行網路定位-->
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
    <!-- 用於讀取手機當前的狀態-->
    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
    <!-- 寫入擴充套件儲存，向擴充套件卡寫入資料，用於寫入離線定位資料-->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
    <!-- 訪問網路，網路定位需要上網-->
    <uses-permission android:name="android.permission.INTERNET" />
    <!-- SD卡讀取許可權，使用者寫入離線定位資料-->
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission>

    <application
        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/AppTheme">
        <meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="TrYMeBYEYL0GtRbTLAqNInyhdCgfcw1y" >
        </meta-data>

        <activity android:name=".MainActivity">
            <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>
 

4.效果圖：