我使用谷歌地图显示（销）不同places.After显示不同palces打它重定向到我家screen.Around 10-15秒后，我的应用程序被closed.I认为，位置更新中仍在运行的后退按钮时这将导致此error.How停止在后台更新活动的背景是什么？
package com.bar.start;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.HttpParams;
import com.bar.barapp.R;
import com.bar.location.Loc;
import com.bar.location.Webcall;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.Circle;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.print.PrintAttributes;
import android.util.Log;
import android.widget.ArrayAdapter;
public class LocationActivity extends Activity implements LocationListener {
private final String TAG = getClass().getSimpleName();
protected ConnectionDetector connectionDetector;
public Boolean isInternetPresent;
private String[] places;
public static Loc [] getloc;
private LocationManager locationManager;
private Location loc;
static HttpEntity entityResponse = null;
GoogleMap map;
MarkerOptions mp;
Activity activity;
Context context;
LocationListener listener;
Double lat,lon;
final String Googlekey="APikey" ;
@Override
protected void onCreate(Bundle savedInstanceState) {
SharedPreferences sharedPreferences;
int locationCount = 0;
connectionDetector = new ConnectionDetector(getApplicationContext());
isInternetPresent = connectionDetector.isConnectingToInternet();
super.onCreate(savedInstanceState);
setContentView(R.layout.location);
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, this);
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}
@Override
public void onLocationChanged(Location location) {
map.clear();
lat=location.getLatitude();
lon=location.getLongitude();
Googleapicall exeTask = new Googleapicall();
exeTask.execute();
mp = new MarkerOptions();
mp.position(new LatLng(lat, lon));
map.addMarker(mp);
mp.title("My Location");
p.animateCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(lat, lon), 13));
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
public class Googleapicall extends AsyncTask<String, Void, String>
{
Loc statStr = null;
Loc[] statInfoResult = null;
ArrayList<Loc> SIArrayList = new ArrayList<Loc>();
private ProgressDialog Dialog;
@Override
protected void onPreExecute() {
Dialog = new ProgressDialog(LocationActivity.this);
Dialog.setMessage(LocationActivity.this.getResources().getString(
R.string.loading));
Dialog.setCancelable(false);
Dialog.show();
}
@Override
protected String doInBackground(String... params) {
String result = "";
try
{
if(isInternetPresent)
{
getloc=Webcall.getdet(lat,lon,Googlekey);
result = "Success";
System.out.println("getloc "+getloc.length);
}
else
{
result = "Failure";
}
}
catch (Exception e)
{
result = "Failure";
e.printStackTrace();
}
return result;
}
@Override
protected void onPostExecute(String result) {
Loc lc=new Loc();
try {
if(result.contains("Success"))
{
mp=new MarkerOptions();
for(int i=0;i<getloc.length;i++)
{
Double lati=getloc[i].latitudes;
Double longi=getloc[i].longitudes;
map.addMarker(new MarkerOptions()
.title("Nearbyplace")
.position(
new LatLng(lati,longi))
.icon(BitmapDescriptorFactory.fromResource(R.drawable.small)));
}
}
}
catch
(Exception e)
{
e.printStackTrace();
}
Dialog.dismiss();
}
}
}
04-06 11:09:53.768: E/AndroidRuntime(5188): FATAL EXCEPTION: main
04-06 11:09:53.768: E/AndroidRuntime(5188): android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@42ea1380 is not valid; is your activity running?
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.view.ViewRootImpl.setView(ViewRootImpl.java:796)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:288)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.app.Dialog.show(Dialog.java:287)
04-06 11:09:53.768: E/AndroidRuntime(5188): at com.bar.start.LocationActivity$Googleapicall.onPreExecute(LocationActivity.java:194)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.os.AsyncTask.execute(AsyncTask.java:534)
04-06 11:09:53.768: E/AndroidRuntime(5188): at com.bar.start.LocationActivity.onLocationChanged(LocationActivity.java:104)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.location.LocationManager$ListenerTransport._handleMessage(LocationManager.java:255)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.location.LocationManager$ListenerTransport.access$000(LocationManager.java:184)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.location.LocationManager$ListenerTransport$1.handleMessage(LocationManager.java:200)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.os.Handler.dispatchMessage(Handler.java:99)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.os.Looper.loop(Looper.java:137)
04-06 11:09:53.768: E/AndroidRuntime(5188): at android.app.ActivityThread.main(ActivityThread.java:5419)
04-06 11:09:53.768: E/AndroidRuntime(5188): at java.lang.reflect.Method.invokeNative(Native Method)
04-06 11:09:53.768: E/AndroidRuntime(5188): at java.lang.reflect.Method.invoke(Method.java:525)
04-06 11:09:53.768: E/AndroidRuntime(5188): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1209)
04-06 11:09:53.768: E/AndroidRuntime(5188): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1025)
04-06 11:09:53.768: E/AndroidRuntime(5188): at dalvik.system.NativeStart.main(Native Method)
