应用场景:实现APP的网络定位功能
1.集成SDK
去百度创建应用,获取到AK,下载定位SDK,把里面的jar包添加到libs下。其他os文件就放在main下新建的jniLilbs里,如图:
2.代码贴出
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);
//声明LocationClient类
mLocationClient = new LocationClient(getApplicationContext());
//注册监听函数
mLocationClient.registerLocationListener(myListener);
init(); // 初始化配置
//存放权限的集合
List<String> permissionList=new ArrayList<>();
//判断是否有权限
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);
}
/**
* 开始请求
*/
public void request(){
mLocationClient.start();
}
/**
* 百度定位的响应接口
*/
public class MyLocationListener extends BDAbstractLocationListener {
@Override
public void onReceiveLocation(BDLocation location) {
String addr = location.getAddrStr(); //获取详细地址信息
String country = location.getCountry(); //获取国家
String province = location.getProvince(); //获取省份
String city = location.getCity(); //获取城市
String district = location.getDistrict(); //获取区县
String street = location.getStreet(); //获取街道信息
tv_location.setText("address==" + addr + " 国家=" + country + " 省=" + province + " 市=" + city + " 区=" + district + " 街道=" + street);
}
}
/**
* 获取动态权限的回调
* @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,"必须打开权限才能使用!",Toast.LENGTH_SHORT).show();
finish();
return;
}
}
request();
}else {
Toast.makeText(MainActivity.this,"未知错误!!",Toast.LENGTH_SHORT).show();
finish();
}
break;
default:break;
}
}
}
3.权限
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.jin.baidudemo">
<!-- 这个权限用于进行网络定位-->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<!-- 这个权限用于访问GPS定位-->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
<!-- 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"></uses-permission>
<!-- 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"></uses-permission>
<!-- 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"></uses-permission>
<!-- 用于读取手机当前的状态-->
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
<!-- 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"></uses-permission>
<!-- 访问网络,网络定位需要上网-->
<uses-permission android:name="android.permission.INTERNET" />
<!-- SD卡读取权限,用户写入离线定位数据-->
<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.效果图: