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
*/
packagecom.jeedroid.tools;
importjava.io.IOException;
importjava.util.List;
importjava.util.Locale;
importandroid.content.Context;
importandroid.location.Address;
importandroid.location.Criteria;
importandroid.location.Geocoder;
importandroid.location.Location;
importandroid.location.LocationListener;
importandroid.location.LocationManager;
importandroid.os.Bundle;
importandroid.provider.Settings;
importandroid.util.Log;
publicclassLocationTools
{
privateLocationlocation;
publicstaticLocationManagergetLocationManager(Contextcontext)
{
return(LocationManager)context.getSystemService(context.LOCATION_SERVICE);
}
//获取位置信息
publicStringgetAddress(Contextcontext)
{
LocationManagerlocationManager=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);
}
returndoWork(context);
}
privateStringdoWork(Contextcontext)
{
Stringaddres="";
LocationManagerlocationManager=this.getLocationManager(context);
Criteriacriteria=newCriteria();
//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);
Stringprovider=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
LocationListenerlocationListener=newLocationListener()
{
@Override
publicvoidonLocationChanged(Locationlocation)
{
LocationTools.this.location=location;
}
@Override
publicvoidonProviderDisabled(Stringprovider)
{
}
@Override
publicvoidonProviderEnabled(Stringprovider)
{
}
@Override
publicvoidonStatusChanged(Stringprovider,intstatus,Bundleextras)
{
}
};
locationManager.requestLocationUpdates(provider,1000,10,locationListener);
Geocodergeo=newGeocoder(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(IOExceptione)
{
//TODOAuto-generatedcatchblock
e.printStackTrace();
}
returnaddres;
}
}

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