Android 根据IP地址获取城市

Android获取手机当前所在经纬度请参考：http://blog.youkuaiyun.com/a511341250/article/details/40509931

manifest中要加的permission和activity_main.xml 参照上。

MainActivity.java

package com.example.test;

import java.util.List;
import java.util.Locale;

import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.app.Activity;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.content.Context;
import android.widget.EditText;

public class MainActivity extends Activity {

	LocationManager lm;
	EditText et;
	LocationListener ll = new LocationListener(){
		public void onLocationChanged(Location location){
			updateView(location);
		}

		@Override
		public void onProviderDisabled(String provider) {
			// TODO Auto-generated method stub
			updateView(null);
		}

		@Override
		public void onProviderEnabled(String provider) {
			// TODO Auto-generated method stub
			Location l = lm.getLastKnownLocation(provider);
			updateView(l);
		}

		@Override
		public void onStatusChanged(String provider, int status, Bundle extras) {
			// TODO Auto-generated method stub
			
		}
	};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		et = (EditText)findViewById(R.id.et);
		lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
		String bestProvider = lm.getBestProvider(getCriteria(), true);
		Location l = lm.getLastKnownLocation(bestProvider);
		updateView(l);
		lm.requestLocationUpdates(bestProvider, 5000, 8, ll);
	}

	private Criteria getCriteria() {
		// TODO Auto-generated method stub
		Criteria c = new Criteria();
		c.setAccuracy(Criteria.ACCURACY_COARSE);
		c.setSpeedRequired(false);
		c.setCostAllowed(false);
		c.setBearingRequired(false);
		c.setAltitudeRequired(false);
		c.setPowerRequirement(Criteria.POWER_LOW);
		return c;
	}
	public void updateView(Location newLocation)
	{
		if(newLocation !=null){
			String latitude = String.valueOf(newLocation.getLatitude());
			String longitude = String.valueOf(newLocation.getLongitude());
			double Latitude = newLocation.getLatitude();
			double Longitude = newLocation.getLongitude();
			String city = getAddressbyGeoPoint(Latitude,Longitude);
			et.setText("您现在的位置是\n维度：");
			et.append(latitude);
			et.append("\n经度：");
			et.append(longitude);
			et.append("\n城市：");
			et.append(city);
		}
		else{
			et.getEditableText().clear();
		}
	}

	
	//从地址Geopoint取得Address
	public String getAddressbyGeoPoint(double Latitude, double Longitude)
	{
	  String strReturn = "";
	  try
	  {
	    /* 创建GeoPoint不等于null */
//	    if (gp != null)
//	    {
	      /* 创建Geocoder对象，用于获得指定地点的地址 */
	      Geocoder gc = new Geocoder(MainActivity.this, Locale.getDefault());
	      
	      /* 取出地理坐标经纬度*/
	      double geoLatitude = Latitude;
	      double geoLongitude = Longitude;
	      
	      /* 自经纬度取得地址（可能有多行）*/
	      List<Address> lstAddress = gc.getFromLocation(geoLatitude, geoLongitude, 1);
	      StringBuilder sb = new StringBuilder();
	      
	      /* 判断地址是否为多行 */
	      if (lstAddress.size() > 0)
	      {
	        Address adsLocation = lstAddress.get(0);

	        for (int i = 0; i < adsLocation.getMaxAddressLineIndex(); i++)
	        {
	          sb.append(adsLocation.getAddressLine(i)).append("\n");  //精确的地址和附近的代表建筑物
	        }
	        sb.append(adsLocation.getLocality()).append("\n");  //当前经纬度所在的城市（市）
//	        sb.append(adsLocation.getPostalCode()).append("\n");
//	        sb.append(adsLocation.getCountryName());
	      }
	      
	      /* 将取得到的地址组合后放到stringbuilder对象中输出用 */
	      strReturn = sb.toString();
//	    }
	  }
	  catch(Exception e)
	  {
	    e.printStackTrace();
	  }
	  return strReturn;
	}
	

}

参考kaka2008的回复：http://www.eoeandroid.com/forum.php?mod=viewthread&tid=23068&page=1#pid216151

用到的jar包Android_Location_V1.1.1.jar