============问题描述============
package com.jt.classlibrary;
import java.util.List;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.preference.PreferenceManager;
import android.provider.Settings.Secure;
import android.util.Log;
public class LocationService extends Service implements LocationListener
{
//private LocationAsyncTask asyncTask = null;
//private Timer asyncTimer = null;
private LocationManager lm = null;
//private Location loc = null;
private int iAutoUpdateFrequency = 10000;
private MyBroadcastReceiver broadcast = null;
private ServiceBinder binder = new ServiceBinder();
public class ServiceBinder extends Binder
{
public LocationService getService()
{
return LocationService.this;
}
}
@Override
public void onCreate()
{
// TODO Auto-generated method stub
try
{
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
iAutoUpdateFrequency = pref.getInt("AUTO_UPDATE_FREQUENCE", 10000);
}
catch(Exception ex)
{
Log.e("error", "Get SharedPreferences Failed---->" + ex.getMessage());
}
try
{
broadcast = new MyBroadcastReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(ConstDef.ACTION_REQUIRE_LOCATION);
//intentFilter.addAction(ConstDef.ACTION_UPMYLOCATION);
registerReceiver(broadcast, intentFilter);
}
catch(Exception ex)
{
Log.e("error", "Register Broadcast Failed---->" + ex.getMessage());
}
try
{
lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
/*try
{
if(!lm.isProviderEnabled(LocationManager.GPS_PROVIDER))
{
if(ConstDef.bOpenGPS)
{
//Secure.setLocationProviderEnabled(getContentResolver(), LocationManager.GPS_PROVIDER, true);
}
}
if(!lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER))
{
if(ConstDef.bOpenNET)
{
//Secure.setLocationProviderEnabled(getContentResolver(), LocationManager.NETWORK_PROVIDER, true);
}
}
}
catch(Exception ex)
{
Log.e("error", "Open GPS or NET Failed---->" + ex.getMessage());
} */
/*List providers = lm.getProviders(false);
for(int i=0;i" + ex.getMessage());
}
Log.i("info", "LocationService Create Success");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
return START_STICKY;
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
unregisterReceiver(broadcast);
lm.removeUpdates(this);
Log.i("info", "Service Destroy");
}
@Override
public boolean onUnbind(Intent intent) {
// TODO Auto-generated method stub
Log.i("info", "Service Unbind");
return super.onUnbind(intent);
}
private class MyBroadcastReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
// TODO Auto-generated method stub
if(intent.getAction().equals(ConstDef.ACTION_REQUIRE_LOCATION))
{
new LocationAsyncTask().execute((Void[])null);
}
else if(intent.getAction().equals(ConstDef.ACTION_UPMYLOCATION))
{
}
}
}
private class LocationAsyncTask extends AsyncTask
{
@Override
protected Location doInBackground(Void... params) {
// TODO Auto-generated method stub
Location result = null;
for(int i=0;i<5;i++)
{
if(lm.isProviderEnabled(LocationManager.GPS_PROVIDER))
{
result = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(result == null)
{
if(lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER))
{
result = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
}
}
else if(lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER))
{
result = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
if(result != null)
{
break;
}
}
return result;
}
@Override
protected void onPostExecute(Location result)
{
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setAction(ConstDef.ACTION_LOCATION_DONE);
if(result == null)
{
intent.putExtra("longitude", -1.0);
intent.putExtra("latitude", -1.0);
}
else
{
intent.putExtra("longitude", result.getLongitude());
intent.putExtra("latitude", result.getLatitude());
}
sendBroadcast(intent);
}
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
if(location != null)
{
Log.i("info", "Check Location Changed");
Intent intent = new Intent();
intent.setAction(ConstDef.ACTION_LOCATION_DONE);
intent.putExtra("longitude", location.getLongitude());
intent.putExtra("latitude", location.getLatitude());
sendBroadcast(intent);
}
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
Log.i("info", "Service Bind");
return binder;
}
}
lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER)总是为false，但是我网络确实是开了的，GPS就可以判断，谁知道怎么回事吗？
============解决方案1============
lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
我的在这里就直接抛异常了