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关于Android用户定位获取location值为null的解决方法

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/*** 主要是用户定位操作*@author hope*/package com.jeedroid.tools;import java.io.IO......

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

/**

* 主要是用户定位操作

*@author hope

*/

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()

{

@Override

public void onLocationChanged(Location location)

{

LocationTools.this.location=location;

}

@Override

public void onProviderDisabled(String provider)

{

}

@Override

public void onProviderEnabled(String provider)

{

}

@Override

public void onStatusChanged(String provider, int status, Bundle extras)

{

}

};

locationManager.requestLocationUpdates(provider, 1000, 10, locationListener);

Geocoder geo = new Geocoder(context,Locale.getDefault());

try

{

List

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 block

e.printStackTrace();

}

return addres;

}

}