关于Android用户定位获取location值为null的解决方法
坑爹的考试终于结束了 目前放假在家 一个字冷啊 不想敲代码了 不过在玩一个GPS的东西 获取Location一直为null 后来是从onLocationChanged里面拿location才搞定了 贴一下吧 代码太乱 不改了 手冷。。。。

/** * 主要是用户定位操作 *@author jeedroid */package com.jeedroid.tools;import java.io.IOException;import java.util.List;import java.util.Locale;import android.content.Context;import android.location.Address;import android.location.Criteria;import android.location.Geocoder;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.provider.Settings;import android.util.Log;public class LocationTools{private Location location;public static LocationManager getLocationManager(Context context){return (LocationManager) context.getSystemService(context.LOCATION_SERVICE);}//获取位置信息public String getAddress(Context context){LocationManager locationManager = this.getLocationManager(context);if(!locationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)){//打开GPS 需Android2.2以上系统支持android.provider.Settings.Secure.setLocationProviderEnabled(context.getContentResolver(), LocationManager.GPS_PROVIDER, false);}return doWork(context);}private String doWork(Context context){String addres="";LocationManager locationManager = this.getLocationManager(context);Criteria criteria = new Criteria();// 获得最好的定位效果      criteria.setAccuracy(Criteria.ACCURACY_FINE);      criteria.setAltitudeRequired(false);      criteria.setBearingRequired(false);      criteria.setCostAllowed(false);      // 使用省电模式      criteria.setPowerRequirement(Criteria.POWER_LOW);      String provider =locationManager.getBestProvider(criteria, true);    Log.i("provider>>>>>>", provider);    //获得当前位置  location为空是一直取  从onLocationChanged里面取    while(location==null)    {    location =locationManager.getLastKnownLocation(provider);    }    //locationListener    LocationListener locationListener = new LocationListener()    {@Overridepublic void onLocationChanged(Location location){LocationTools.this.location=location;}@Overridepublic void onProviderDisabled(String provider){}@Overridepublic void onProviderEnabled(String provider){}@Overridepublic void onStatusChanged(String provider, int status, Bundle extras){}        };    locationManager.requestLocationUpdates(provider, 1000, 10, locationListener);      Geocoder geo = new Geocoder(context,Locale.getDefault());    try{List<Address> address=geo.getFromLocation(location.getLatitude(), location.getLongitude(), 1);if(address.size()>0){addres=address.get(0).getAddressLine(0);}} catch (IOException e){// TODO Auto-generated catch blocke.printStackTrace();}    return addres;}}