Android使用网络获取定位的方法

本文实例为大家分享了android使用网络获取定位的具体代码，供大家参考，具体内容如下

目标效果：

 

程序运行弹出权限选择，选择运行网络定位后会查询位置，然后在textview上显示当前国家和城市。

1.activity_main.xml页面定义textview显示城市名。

activity_main.xml页面：

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingbottom="@dimen/activity_vertical_margin"
  android:paddingleft="@dimen/activity_horizontal_margin"
  android:paddingright="@dimen/activity_horizontal_margin"
  android:paddingtop="@dimen/activity_vertical_margin"
  tools:context=".mainactivity" >
 
  <textview
    android:id="@+id/text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="正在定位。。。" />
 
</relativelayout>

2.新建common.java页面，设置公共常量。

common.java页面：

package com.sc.demo.common;
/**
 * 公共常量
 * @author wxy
 *
 */
public class common {
 
 public static final string location = "location";
 public static final string location_action = "locationaction";
}

3.新建locationsvc.java页面作为服务进行定位。

locationsvc.java页面：

package com.sc.demo.locate;
 
import com.sc.demo.common.common;
 
import android.app.service;
import android.content.intent;
import android.location.location;
import android.location.locationlistener;
import android.location.locationmanager;
import android.os.bundle;
import android.os.ibinder;
import android.util.log;
import android.widget.toast;
 
/**
 * 定位服务
 * @author wxy
 *
 */
public class locationsvc extends service implements locationlistener {
 
 private locationmanager locationmanager;
 
 @override
 public ibinder onbind(intent intent) {
 return null;
 }
 
 @override
 public void oncreate() {
 locationmanager = (locationmanager) getsystemservice(location_service);
 }
 
 @override
 public void onstart(intent intent, int startid) {
 if (locationmanager.getprovider(locationmanager.network_provider) != null) locationmanager
  .requestlocationupdates(locationmanager.network_provider, 0, 0,
   this);
 else if (locationmanager.getprovider(locationmanager.gps_provider) != null) locationmanager
  .requestlocationupdates(locationmanager.gps_provider, 0, 0,
   this);
 else toast.maketext(this, "无法定位", toast.length_short).show();
 }
 
 @override
 public boolean stopservice(intent name) {
 return super.stopservice(name);
 }
 
 @override
 public void onlocationchanged(location location) {
 
 //通知activity
 intent intent = new intent();
 intent.setaction(common.location_action);
 intent.putextra(common.location, location.tostring());
 sendbroadcast(intent);
 
 // 如果只是需要定位一次，这里就移除监听，停掉服务。如果要进行实时定位，可以在退出应用或者其他时刻停掉定位服务。
 locationmanager.removeupdates(this);
 stopself();
 }
 
 @override
 public void onproviderdisabled(string provider) {
 }
 
 @override
 public void onproviderenabled(string provider) {
 }
 
 @override
 public void onstatuschanged(string provider, int status, bundle extras) {
 }
 
}

4.mainactivity.java页面获取经纬度，然后根据经纬度获取城市名。

mainactivity.java页面：

package com.sc.demo;
 
import java.io.ioexception;
import java.util.list;
 
import com.sc.demo.common.common;
import com.sc.demo.locate.locationsvc;
 
import android.location.address;
import android.location.geocoder;
import android.os.bundle;
import android.util.log;
import android.widget.textview;
import android.app.activity;
import android.app.progressdialog;
import android.content.broadcastreceiver;
import android.content.context;
import android.content.intent;
import android.content.intentfilter;
 
public class mainactivity extends activity {
 
 private textview text;
 private progressdialog dialog;
 
 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main);
 text = (textview) findviewbyid(r.id.text);
 
 // 注册广播
 intentfilter filter = new intentfilter();
 filter.addaction(common.location_action);
 this.registerreceiver(new locationbroadcastreceiver(), filter);
 
 // 启动服务
 intent intent = new intent();
 intent.setclass(this, locationsvc.class);
 startservice(intent);
 
 // 等待提示
 dialog = new progressdialog(this);
 dialog.setmessage("正在定位...");
 dialog.setcancelable(true);
 dialog.show();
 }
 
 private class locationbroadcastreceiver extends broadcastreceiver {
 
 @override
 public void onreceive(context context, intent intent) {
  if (!intent.getaction().equals(common.location_action))
  return;
  string locationinfo = intent.getstringextra(common.location);
  double latitude = double                 //截取经纬度转换为double型
   .parsedouble(locationinfo.substring(17, 26));
  double longitude = double.parsedouble(locationinfo
   .substring(27, 37));
  text.settext(getaddress(latitude, longitude));
  dialog.dismiss();
  mainactivity.this.unregisterreceiver(this);// 不需要时注销
 }
 
 public string getaddress(double latitude, double longitude) {
  string cityname = "";
  list<address> addlist = null;
  geocoder ge = new geocoder(mainactivity.this);
  try {
  addlist = ge.getfromlocation(latitude, longitude, 1);
  } catch (ioexception e) {
  e.printstacktrace();
  }
  if (addlist != null && addlist.size() > 0) {
  for (int i = 0; i < addlist.size(); i++) {
   address ad = addlist.get(i);
   cityname += ad.getcountryname() + ";" + ad.getlocality();
  }
  }
  log.i("wxy", "city:" + cityname);
  return cityname;
 }
 }
}

5.androidmanifest.xml页面添加权限并声明服务。

androidmanifest.xml页面：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.sc.demo"
  android:versioncode="1"
  android:versionname="1.0" >
 
  <uses-sdk
    android:minsdkversion="8"
    android:targetsdkversion="18" />
 
  <uses-permission android:name="android.permission.access_coarse_location" />
  <uses-permission android:name="android.permission.access_fine_location" />
 
  <application
    android:allowbackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/apptheme" >
    <activity
      android:name="com.sc.demo.mainactivity"
      android:label="@string/app_name" >
      <intent-filter>
        <action android:name="android.intent.action.main" />
 
        <category android:name="android.intent.category.launcher" />
      </intent-filter>
    </activity>
 
    <service android:name=".locate.locationsvc" />
  </application>
 
</manifest>

6.运行就能显示目标效果了。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。