在玩一個GPS的東西 獲取Location一直為null 後來是從onLocationChanged裡面拿location才搞定了 貼一下吧 代碼太亂
- /**
- * 主要是用戶定位操作
- *@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);
- }
- //獲取位置信息
- public String getAddress(Context context)
- {
- LocationManager locationManager = this.getLocationManager(context);
- if(!locationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER))
- {
- //打開GPS 需Android2.2以上系統支持
- 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();
- // 獲得最好的定位效果
- criteria.setAccuracy(Criteria.ACCURACY_FINE);
- criteria.setAltitudeRequired(false);
- criteria.setBearingRequired(false);
- criteria.setCostAllowed(false);
- // 使用省電模式
- criteria.setPowerRequirement(Criteria.POWER_LOW);
- String provider =locationManager.getBestProvider(criteria, true);
- Log.i("provider>>>>>>", provider);
- //獲得當前位置 location為空是一直取 從onLocationChanged裡面取
- 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;
- }
- }