定位的几种方法

1  gprs定位

 

 

package com.android.antking.gps;

import android.app.Activity;
import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

public class GPSActivity extends Activity {
    //声明位置管理对象
  private LocationManager locationManager;
  //声明位置监听对象
  private LocationListener locationListener;
  //声明字符串变量
  String locationprovider;
  //声明显示文本视图组建
  private TextView textview;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //获得文本视图
        textview = (TextView)this.findViewById(R.id.textView1);
        try{
         //新建Criteria类
         Criteria locationcriteria = new Criteria();
         //设置精确精度
         locationcriteria.setAccuracy(Criteria.ACCURACY_FINE);
         //不提供海拔高度信息
         locationcriteria.setAltitudeRequired(false);
         //不提供方向信息
         locationcriteria.setBearingRequired(false);
         //允许运营商计费
         locationcriteria.setCostAllowed(true);
         //设置电池消耗为低耗费
         locationcriteria.setPowerRequirement(Criteria.POWER_LOW);
         //使用getSystemService()方法获得位置管理器对象
         locationManager
         =(LocationManager)getSystemService(Context.LOCATION_SERVICE);
         //locationManager.setTestProviderEnabled("gps", true);
         Toast.makeText(GPSActivity.this, "getSystemService", Toast.LENGTH_SHORT).show();
         //检查gps功能开启
         if(checkgps()){
          locationprovider 
          =locationManager.getBestProvider(locationcriteria, true);
          Log.d("provider", locationprovider);
          //注册位置监听器
          locationListener = new MyLocationListener();
          locationManager.requestLocationUpdates(locationprovider, 1000, 0,locationListener);
         }
        }catch(Exception e){
         Toast.makeText(GPSActivity.this, "异常错误"+e.toString(),Toast.LENGTH_LONG).show();
        }
       
    }
    private class MyLocationListener implements LocationListener{
         /**
          * 若位置发生变化，onLocationChanged方法被调用
          */
  @Override
  public void onLocationChanged(Location location) {
   // TODO Auto-generated method stub
   Log.i("位置发生变化", "Invoke");
   if(location != null){
    //获得经度
    String latitude = Double.toString(location.getLatitude());//经度
    
    //获得纬度
   
      String longitude = Double.toString(location.getLongitude());//纬度
    //在文本框中显示
      textview = (TextView)GPSActivity.this.findViewById(R.id.textView1);
    textview.setText("经度："+longitude+"纬度"+latitude);
   }
   //locationManager.removeUpdates(this);
   //locationManager.setTestProviderEnabled("gps", true);
  }
         //若屏蔽提供商，该方法被调用
  
  @Override
  public void onProviderDisabled(String provider) {
   // TODO Auto-generated method stub
   Log.i("屏蔽提供商", "Invode");
  }
        //若激活提供商，该方法被调用
  @Override
  public void onProviderEnabled(String provider) {
   // TODO Auto-generated method stub
   Log.i("激活提供商", "Invode");
  }
       //若状态发生变化，该方法被调用
  @Override
  public void onStatusChanged(String provider, int status, Bundle extras) {
   // TODO Auto-generated method stub
   Log.i("状态发生变化", "Invode");
  }
     
    }
    private boolean checkgps(){
     boolean providerEnabled
      = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
     //若被激活，则返回真值
     if(providerEnabled ==true){
      Toast.makeText(this, "Gps模块活动正常", Toast.LENGTH_SHORT).show();
      return true;
     }
     else{
      Toast.makeText(this, "请开启GPS", Toast.LENGTH_SHORT);
      return false;
     }
     
    }
   
}

 

 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.android.antking.gps"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="7" />
    <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION"></uses-permission>
    <uses-permission android:name="android.permission.UPDATE_DEVICE_STATS"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
    <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"></uses-permission>
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".GPSActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
</manifest>

 

 

 

 

 

2，谷歌基站定位（获取的是json字符串 有经纬度和城市信息）

 

  package lab.sodino.location;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.telephony.gsm.GsmCellLocation;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

/**
 * Google定位的实现.<br/>
 * Geolocation的详细信息请参见：<br/>
 * <a
 * href="http://code.google.com/apis/gears/geolocation_network_protocol.html">
 * <A href="http://code.google.com/apis/gears/geolocation_network_protocol.htmlhttp://code.google.com/apis/gears/geolocation_network_protocol.html</a>
 */
public class LocationAct extends Activity {
 private TextView txtInfo;
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  Button btn = (Button) findViewById(R.id.btnStart);
  txtInfo = (TextView) findViewById(R.id.txtInfo);
  btn.setOnClickListener(new Button.OnClickListener() {
   public void onClick(View view) {
    getLocation();
   }
  });
 }
 private void getLocation() {
  TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
  GsmCellLocation gsmCell = (GsmCellLocation) tm.getCellLocation();
  int cid = gsmCell.getCid();
  int lac = gsmCell.getLac();
  String netOperator = tm.getNetworkOperator();
  int mcc = Integer.valueOf(netOperator.substring(0, 3));
  int mnc = Integer.valueOf(netOperator.substring(3, 5));
  JSONObject holder = new JSONObject();
  JSONArray array = new JSONArray();
  JSONObject data = new JSONObject();
  try {
   holder.put("version", "1.1.0");
   holder.put("host", "maps.google.com");
   holder.put("address_language", "zh_CN");
   holder.put("request_address", true);
   holder.put("radio_type", "gsm");
   holder.put("carrier", "HTC");
   data.put("cell_id", cid);
   data.put("location_area_code", lac);
   data.put("mobile_countyr_code", mcc);
   data.put("mobile_network_code", mnc);
   array.put(data);
   holder.put("cell_towers", array);
  } catch (JSONException e) {
   e.printStackTrace();
  }
  DefaultHttpClient client = new DefaultHttpClient();
  HttpPost httpPost = new HttpPost("http://www.google.com/loc/json");
  StringEntity stringEntity = null;
  try {
   stringEntity = new StringEntity(holder.toString());
  } catch (UnsupportedEncodingException e) {
   e.printStackTrace();
  }
  httpPost.setEntity(stringEntity);
  HttpResponse httpResponse = null;
  try {
   httpResponse = client.execute(httpPost);
  } catch (ClientProtocolException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
  HttpEntity httpEntity = httpResponse.getEntity();
  InputStream is = null;
  try {
   is = httpEntity.getContent();
  } catch (IllegalStateException e) {
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  InputStreamReader isr = new InputStreamReader(is);
  BufferedReader reader = new BufferedReader(isr);
  StringBuffer stringBuffer = new StringBuffer();
  try {
   String result = "";
   while ((result = reader.readLine()) != null) {
    stringBuffer.append(result);
   }
  } catch (IOException e) {
   e.printStackTrace();
  }
  System.out.println("[sodino]" + stringBuffer.toString());
  txtInfo.setText(stringBuffer.toString());
 }
}

 

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>