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
http://blog.csdn.net/hopezhangbo/article/details/7384142
/** * 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> 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; } }