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说明：我正在开发LBS应用，我使用GPS和网络提供商接入定位并将数据通过GPRS发送到服务器。我想不断运行这个应用程序来定位用户。一切都运行完美只有概率是当我的应用程序在后台进行。窗口管理器：WIN死亡：窗口{40c12c30 com.example.trackme/com.example.trackme.MainActivity暂停= FALSE}
问题：我的应用程序运行时正确它将在前台，但我想在此背景SHD应用程序运行，当我按下home键，同时运行应用程序，我收到此错误信息。以下是我的MainActivity和Mylocationlistener类。
MainActivity： -
package com.example.trackme;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.telephony.TelephonyManager;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
@SuppressLint("NewApi")
public class MainActivity extends Activity {
private Button start;
private static final int TEN_SECONDS = 10000;
private static final int TEN_METERS = 10;
private static final int TWO_MINUTES = 1000 * 60 * 2;
private boolean mGeocoderAvailable;
private String addressText;
LocationManager mlocManager ;
LocationListener mlocListener=new MyLocationListener("", "");
private String device_ID;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mGeocoderAvailable =Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD && Geocoder.isPresent();
setContentView(R.layout.activity_main);
start=(Button)findViewById(R.id.button1);
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
}
});
}
protected void onResume() {
super.onResume();
setup();
}
private void setup() {
Location gpsLocation = null;
Location networkLocation = null;
TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
device_ID=telephonyManager.getDeviceId();
mlocManager.removeUpdates(mlocListener);
gpsLocation = requestUpdatesFromProvider(
LocationManager.GPS_PROVIDER);
networkLocation = requestUpdatesFromProvider(
LocationManager.NETWORK_PROVIDER);
// Update the UI immediately if a location is obtained.
// If both providers return last known locations, compare the two and use the better
// one to update the UI. If only one provider returns a location, use it.
if (gpsLocation != null && networkLocation != null) {
updateUILocation(getBetterLocation(gpsLocation, networkLocation));
} else if (gpsLocation != null) {
updateUILocation(gpsLocation);
} else if (networkLocation != null) {
updateUILocation(networkLocation);
}
}
private void doReverseGeocoding(Location location) {
// Since the geocoding API is synchronous and may take a while. You don't want to lock
// up the UI thread. Invoking reverse geocoding in an AsyncTask.
(new ReverseGeocodingTask(this)).execute(new Location[] {location});
mlocListener = new MyLocationListener(addressText,device_ID);
}
private void updateUILocation(Location location) {
// We're sending the update to a handler which then updates the UI with the new
// location.
Toast.makeText(getApplicationContext(),location.getProvider()+ ","+ location.getLatitude() + ", " + location.getLongitude(),Toast.LENGTH_LONG).show();
if (mGeocoderAvailable) doReverseGeocoding(location);
}
protected Location getBetterLocation(Location newLocation, Location currentBestLocation) {
if (currentBestLocation == null) {
// A new location is always better than no location
return newLocation;
}
// Check whether the new location fix is newer or older
long timeDelta = newLocation.getTime() - currentBestLocation.getTime();
boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
boolean isNewer = timeDelta > 0;
// If it's been more than two minutes since the current location, use the new location
// because the user has likely moved.
if (isSignificantlyNewer) {
System.out.println("Provider"+newLocation.getProvider());
return newLocation;
// If the new location is more than two minutes older, it must be worse
} else if (isSignificantlyOlder) {
System.out.println("Provider"+currentBestLocation.getProvider());
return currentBestLocation;
}
// Check whether the new location fix is more or less accurate
int accuracyDelta = (int) (newLocation.getAccuracy() - currentBestLocation.getAccuracy());
boolean isLessAccurate = accuracyDelta > 0;
boolean isMoreAccurate = accuracyDelta < 0;
boolean isSignificantlyLessAccurate = accuracyDelta > 200;
// Check if the old and new location are from the same provider
boolean isFromSameProvider = isSameProvider(newLocation.getProvider(),
currentBestLocation.getProvider());
// Determine location quality using a combination of timeliness and accuracy
if (isMoreAccurate) {
System.out.println("Provider"+newLocation.getProvider());
return newLocation;
} else if (isNewer && !isLessAccurate) {
System.out.println("Provider"+newLocation.getProvider());
return newLocation;
} else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
System.out.println("Provider"+newLocation.getProvider());
return newLocation;
}
System.out.println("Provider"+currentBestLocation.getProvider());
return currentBestLocation;
}
private boolean isSameProvider(String provider1, String provider2) {
if (provider1 == null) {
return provider2 == null;
}
return provider1.equals(provider2);
}
private Location requestUpdatesFromProvider(String provider) {
Location location = null;
if (mlocManager.isProviderEnabled(provider)) {
mlocManager.requestLocationUpdates(provider, TEN_SECONDS, TEN_METERS, mlocListener);
location = mlocManager.getLastKnownLocation(provider);
} else {
// Toast.makeText(this, errorResId, Toast.LENGTH_LONG).show();
}
return location;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
protected void onStart() {
super.onStart();
mlocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
final boolean gpsEnabled = mlocManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (!gpsEnabled) {
// Build an alert dialog here that requests that the user enable
// the location services, then when the user clicks the "OK" button,
// call enableLocationSettings()
Toast.makeText(getApplicationContext(), "Pls Enable GPS" , Toast.LENGTH_LONG).show();
}
}
private class ReverseGeocodingTask extends AsyncTask<Location, Void, Void> {
Context mContext;
public ReverseGeocodingTask(Context context) {
super();
mContext = context;
}
@Override
protected Void doInBackground(Location... params) {
Geocoder geocoder = new Geocoder(mContext, Locale.getDefault());
Location loc = params[0];
List<Address> addresses = null;
try {
addresses = geocoder.getFromLocation(loc.getLatitude(), loc.getLongitude(), 1);
} catch (IOException e) {
e.printStackTrace();
// Update address field with the exception.
System.out.println(e.toString());
}
if (addresses != null && addresses.size() > 0) {
Address address = addresses.get(0);
// Format the first line of address (if available), city, and country name.
addressText = String.format("%s, %s, %s",
address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",
address.getLocality(),
address.getCountryName());
// Update address field on UI.
// Message.obtain(mHandler, UPDATE_ADDRESS, addressText).sendToTarget();
//Toast.makeText(getApplicationContext(), addressText, Toast.LENGTH_LONG).show();
System.out.println(addressText);
}
return null;
}
}
}
Mylocationlistener： -
package com.example.trackme;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.os.AsyncTask;
import android.os.BatteryManager;
import android.os.Bundle;
import android.os.IBinder;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;
public class MyLocationListener extends Service implements android.location.LocationListener {
private static String device_ID;
private float mySpeed;
private Object time;
private String lat;
private String longitude;
private int level;
private String locate;
public MyLocationListener(String addressText,String Device_id) {
locate=addressText;
MyLocationListener.device_ID=Device_id;
}
@Override
public void onLocationChanged(Location loc) {
lat= String.valueOf(loc.getLatitude());
longitude=String.valueOf(loc.getLongitude());
if((lat!=null) && (longitude!=null))
{
String Text = "My current location is: " +
"Latitud = " + loc.getLatitude() +
"Longitud = " + loc.getLongitude();
// Toast.makeText(this, Text, Toast.LENGTH_SHORT).show();
// Send.performClick();
AsyncTaskRunner runner = new AsyncTaskRunner();
String sleepTime = "2000";
if(loc.hasSpeed()){
mySpeed = (float) (3.6 * (loc.getSpeed()));
// System.out.println("\nCurrent speed: " + mySpeed + " km/h");
}
runner.execute(sleepTime);
Log.d("Location Found", Text);
}
}
@Override
public void onProviderDisabled(String provider) {
Toast.makeText(getApplicationContext(), "Provider is Disabled",Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderEnabled(String provider) {
Toast.makeText(getApplicationContext(), "Provider is Enabled",Toast.LENGTH_SHORT).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
private BroadcastReceiver batteryInfoReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// int health= intent.getIntExtra(BatteryManager.EXTRA_HEALTH,0);
// int voltage= intent.getIntExtra(BatteryManager.EXTRA_VOLTAGE,0);
level= intent.getIntExtra(BatteryManager.EXTRA_LEVEL,0);
System.out.println("Level" +level);
}
};
private class AsyncTaskRunner extends AsyncTask<String, String, String> {
private String resp;
@Override
protected String doInBackground(String... params) {
publishProgress("Sleeping..."); // Calls onProgressUpdate()
try {
// Do your long operations here and return the result
int time = Integer.parseInt(params[0]);
// Sleeping for given time period
Thread.sleep(time);
HttpClient httpClient = new DefaultHttpClient();
String postURL = "";
postURL = "http://smpl.trackfleet.biz/lat_long.php?lat="+lat+"&long="+longitude+"&speed="+mySpeed +"&IMEI_NO="+MyLocationListener.device_ID+"&battery_level="+level +"&location="+locate;
//postURL = "http://bb.trackfleet.biz/android_gps/lat_long.php?lat="+lat+"&long="+longitude+"&speed=0" +"&IMEI_NO=911223100301734"+"&battery_level="+level;
System.out.println(postURL);
HttpPost httpPost = new HttpPost(postURL);
HttpResponse httpResponse = null;
try
{
// Toast.makeText(getApplicationContext(),"Sending location to Server", Toast.LENGTH_SHORT).show();
System.out.println("Sending to server");
httpResponse = httpClient.execute(httpPost);
String str = inputStreamToString(httpResponse.getEntity().getContent()).toString();
System.out.println("Response"+str);
// location_sms="Sales Person="+str+"latitude="+lat+"longitude="+longitude+"&speed="+mySpeed +"&IMEI_NO="+device_ID+"&battery_level="+level +"&location="+addressText;
// getSharedPreferences("Values", 4).edit().putString("location_sms",location_sms).commit();
// Toast.makeText(getApplicationContext(), str, Toast.LENGTH_SHORT).show();
}
catch(Exception ex)
{
//Toast.makeText(getApplicationContext(),"Could not communicate with Server" , Toast.LENGTH_SHORT).show();
System.out.println("Could not communicate with Server");
ex.printStackTrace();
}
} catch (InterruptedException e) {
e.printStackTrace();
resp = e.getMessage();
} catch (Exception e) {
e.printStackTrace();
resp = e.getMessage();
}
return resp;
}
private StringBuilder inputStreamToString(InputStream is) {
String line = "";
StringBuilder total = new StringBuilder();
// Wrap a BufferedReader around the InputStream
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
// Read response until the end
try {
while ((line = rd.readLine()) != null) {
total.append(line);
}
} catch (IOException e) {
e.printStackTrace();
}
// Return full string
return total;
}
}
}
logcat的： -
WIN DEATH: Window{40c12c30 com.example.trackme/com.example.trackme.MainActivity paused=false}
02-18 13:16:45.939: I/SurfaceFlinger(201):
02-18 13:16:45.939: I/SurfaceFlinger(201): surface flinger stars handleComposing3DStateSetting enter
02-18 13:16:45.939: I/SurfaceFlinger(201): surface flinger stars handleComposing3DStateSetting exit: 0
02-18 13:16:45.940: I/SurfaceFlinger(201):
02-18 13:16:45.940: I/SurfaceFlinger(201): surface flinger stars handleComposing3DStateSetting enter
02-18 13:16:45.940: I/SurfaceFlinger(201): surface flinger stars handleComposing3DStateSetting exit: 0
02-18 13:16:45.942: D/IPCThreadState(201): [DN #5] BR_DEAD_BINDER cookie 0x3b5c08
02-18 13:16:45.942: D/IPCThreadState(201): [DN #5] BR_CLEAR_DEATH_NOTIFICATION_DONE cookie 0x3b5c08
02-18 13:16:45.942: D/IPCThreadState(201): [DN #5] BR_DEAD_BINDER cookie 0x20ce78
02-18 13:16:45.942: V/LocationManagerService(201): Location listener died
02-18 13:16:45.942: D/IPCThreadState(201): [DN #5] BR_DEAD_BINDER cookie 0x5ba5d8
02-18 13:16:45.943: V/ActivityManager(201): Death received in [email protected]0945b90 for thread [email protected]
02-18 13:16:45.943: I/ActivityManager(201): Process com.example.trackme (pid 26976) has died.
02-18 13:16:45.943: V/ActivityManager(201): Dying app: ProcessRecord{408e7ae8 26976:com.example.trackme/10067}, pid: 26976, thread: [email protected]
02-18 13:16:45.943: V/ActivityManager(201): Removing app ProcessRecord{408e7ae8 0:com.example.trackme/10067} from list [HistoryRecord{40a61240 com.android.phone/.InCallScreen}, HistoryRecord{4077ea58 com.example.trackme/.MainActivity}, HistoryRecord{40875438 com.android.mlabs/.Launcher}, HistoryRecord{409808e8 com.android.settings/.SettingsTabActivity}, HistoryRecord{40adb610 com.android.settings/.ApplicationSettings}, HistoryRecord{4093d3a0 com.android.settings/.ManageApplications}] with 6 entries
02-18 13:16:45.943: V/ActivityManager(201): Record #5 HistoryRecord{4093d3a0 com.android.settings/.ManageApplications}: app=ProcessRecord{40c1f9e8 26810:com.android.settings/1000}
02-18 13:16:45.943: V/ActivityManager(201): Record #4 HistoryRecord{40adb610 com.android.settings/.ApplicationSettings}: app=ProcessRecord{40c1f9e8 26810:com.android.settings/1000}
02-18 13:16:45.943: V/ActivityManager(201): Record #3 HistoryRecord{409808e8 com.android.settings/.SettingsTabActivity}: app=ProcessRecord{40c1f9e8 26810:com.android.settings/1000}
02-18 13:16:45.943: V/ActivityManager(201): Record #2 HistoryRecord{40875438 com.android.mlabs/.Launcher}: app=ProcessRecord{407ef4e8 23796:android.process.acore/10036}
02-18 13:16:45.943: V/ActivityManager(201): Record #1 HistoryRecord{4077ea58 com.example.trackme/.MainActivity}: app=ProcessRecord{408e7ae8 0:com.example.trackme/10067}
02-18 13:16:45.943: V/ActivityManager(201): Removing this entry!
02-18 13:16:45.943: V/ActivityManager(201): Record #0 HistoryRecord{40a61240 com.android.phone/.InCallScreen}: app=ProcessRecord{40881af0 289:com.android.phone/1001}
02-18 13:16:45.943: V/ActivityManager(201): Removing app ProcessRecord{408e7ae8 0:com.example.trackme/10067} from list [] with 0 entries
02-18 13:16:45.943: V/ActivityManager(201): Removing app ProcessRecord{408e7ae8 0:com.example.trackme/10067} from list [] with 0 entries
02-18 13:16:45.943: V/ActivityManager(201): Removing app ProcessRecord{408e7ae8 0:com.example.trackme/10067} from list [] with 0 entries
02-18 13:16:45.944: V/ActivityManager(201): Removing app ProcessRecord{408e7ae8 0:com.example.trackme/10067} from history with 10 entries
02-18 13:16:45.944: V/ActivityManager(201): Record #9 HistoryRecord{4093d3a0 com.android.settings/.ManageApplications}: app=ProcessRecord{40c1f9e8 26810:com.android.settings/1000}
02-18 13:16:45.944: V/ActivityManager(201): Record #8 HistoryRecord{40adb610 com.android.settings/.ApplicationSettings}: app=ProcessRecord{40c1f9e8 26810:com.android.settings/1000}
02-18 13:16:45.944: V/ActivityManager(201): Record #7 HistoryRecord{409808e8 com.android.settings/.SettingsTabActivity}: app=ProcessRecord{40c1f9e8 26810:com.android.settings/1000}
02-18 13:16:45.944: V/ActivityManager(201): Record #6 HistoryRecord{40875438 com.android.mlabs/.Launcher}: app=ProcessRecord{407ef4e8 23796:android.process.acore/10036}
02-18 13:16:45.944: V/ActivityManager(201): Record #5 HistoryRecord{4077ea58 com.example.trackme/.MainActivity}: app=ProcessRecord{408e7ae8 0:com.example.trackme/10067}
02-18 13:16:45.944: V/ActivityManager(201): Keeping entry, setting app to null
02-18 13:16:45.944: V/ActivityManager(201): Record #4 HistoryRecord{40c103b8 com.android.mms/.ui.ComposeMessageActivity}: app=null
02-18 13:16:45.944: V/ActivityManager(201): Record #3 HistoryRecord{40a540b8 com.android.mms/com.gionee.mms.ui.MmsSmsTabActivity}: app=null
02-18 13:16:45.944: V/ActivityManager(201): Record #2 HistoryRecord{40923ef8 com.android.contacts/.DialtactsActivity}: app=null
02-18 13:16:45.944: V/ActivityManager(201): Record #1 HistoryRecord{40a21258 com.android.calculator2/.Calculator}: app=null
02-18 13:16:45.944: V/ActivityManager(201): Record #0 HistoryRecord{40a61240 com.android.phone/.InCallScreen}: app=ProcessRecord{40881af0 289:com.android.phone/1001}
02-18 13:16:45.944: D/IPCThreadState(201): [DN #5] BR_CLEAR_DEATH_NOTIFICATION_DONE cookie 0x5ba6c8
02-18 13:16:45.947: V/LocationManagerService(201): _removeUpdates: listener = Receiver{409892c0 Listener [email protected]}mUpdateRecords: {gps=UpdateRecord{40a5e288 mProvider: gps mUid: 10067}, network=UpdateRecord{408e66d0 mProvider: network mUid: 10067}}
02-18 13:16:45.949: D/IPCThreadState(201): [DN #5] BR_CLEAR_DEATH_NOTIFICATION_DONE cookie 0x5ba5d8
02-18 13:16:45.949: D/LocationManagerService(201): removeUpdatesLocked is called provider:receiver: Receiver{409892c0 Listener [email protected]}mUpdateRecords: {gps=UpdateRecord{40a5e288 mProvider: gps mUid: 10067}, network=UpdateRecord{408e66d0 mProvider: network mUid: 10067}}callingPid: 201ap name:system
02-18 13:16:45.950: D/PowerManagerService(201): acquireWakeLock flags=0x1 tag=GpsLocationProvider
02-18 13:16:45.950: I/SurfaceFlinger(201):
02-18 13:16:45.950: I/SurfaceFlinger(201): surface flinger stars handleComposing3DStateSetting enter
02-18 13:16:45.950: I/SurfaceFlinger(201): surface flinger stars handleComposing3DStateSetting exit: 0
02-18 13:16:45.952: D/Settings/Provide(201): lookupValue, table secure cache.containsKey location_providers_allowed
02-18 13:16:45.952: D/LocationManagerService(201): isAllowedBySettingsLocked gpsistrue
02-18 13:16:45.952: D/PowerManagerService(201): acquireWakeLock flags=0x1 tag=GpsLocationProvider
02-18 13:16:45.952: D/Settings/Provide(201): lookupValue, table secure cache.containsKey location_providers_allowed
02-18 13:16:45.952: D/LocationManagerService(201): isAllowedBySettingsLocked networkistrue
02-18 13:16:45.955: W/GpsLocationProvider(201): Unneeded remove listener for uid 1000
02-18 13:16:45.955: D/IPCThreadState(201): [DN #5] BR_CLEAR_DEATH_NOTIFICATION_DONE cookie 0x20ce78
02-18 13:16:45.957: D/androidNlpServiceThread(280): adding listener com.[email protected]40553208 with period 86400
02-18 13:16:45.957: D/androidNetworkLocationListeners(280): Still have listener com.[email protected]40553208
02-18 13:16:45.959: D/PowerManagerService(201): acquireWakeLock flags=0x1 tag=NetworkLocationLocator
02-18 13:16:45.960: D/GpsLocationProvider(201): stopNavigating
02-18 13:16:45.961: D/WifiService(201): acquireWifiLockLocked: WifiLock{NetworkLocationLocator type=2 [email protected]}
02-18 13:16:45.961: D/Settings/Provide(201): lookupValue, table secure cache.containsKey wifi_on
02-18 13:16:45.961: D/WifiService(201): doUpdateWifiState, mDisableByWifiManager=false, wifiEnabled=true
02-18 13:16:45.961: D/Settings/Provide(201): lookupValue, table system cache.containsKey airplane_mode_radios
02-18 13:16:45.961: D/Settings/Provide(201): lookupValue, table system cache.containsKey airplane_mode_on
02-18 13:16:45.962: D/PowerManagerService(201): acquireWakeLock flags=0x1 tag=*wifi*
02-18 13:16:45.963: D/WifiService(201): setWifiEnabledBlocking, enable=true, persist=false, uid=1000
02-18 13:16:45.963: D/WifiStateTracker(201): restart, mConnectingSupplicant=false
02-18 13:16:45.964: V/AlarmManager(201): set: Alarm{40936e10 type 2 com.google.android.location}
02-18 13:16:45.965: V/AlarmManager(201): Adding alarm Alarm{40936e10 type 2 com.google.android.location} at 0
02-18 13:16:45.965: V/AlarmManager(201): alarms: 5 type: 2
02-18 13:16:45.965: V/AlarmManager(201): 0: Jan 02 10:10:39 am com.google.android.location
02-18 13:16:45.965: V/AlarmManager(201): 1: Jan 02 10:14:56 am com.google.android.gsf
02-18 13:16:45.965: V/AlarmManager(201): 2: Jan 02 10:30:33 am com.google.android.apps.maps
02-18 13:16:45.965: V/AlarmManager(201): 3: Jan 02 11:52:19 am com.google.android.apps.maps
02-18 13:16:45.965: V/AlarmManager(201): 4: Dec 15 06:01:30 am com.google.android.apps.maps
02-18 13:16:45.965: V/AlarmManager(201): Native set alarm :Alarm{40936e10 type 2 com.google.android.location}
02-18 13:16:45.966: E/TelephonyManager(280): getDefaultSim is sim1
我公顷我发送数据到服务器时使用AsyncTask，我正在做我的GPS活动的服务方法。我不知道为什么WindowManager停止我的GPS在应用程序。我看到一些与ANR问题有关的帖子，但在我的logcat中没有生成ANR。我的活动正在做出正确回应，我正在背景中做所有繁重的工作，但这仍在发生。
我已经看到在logcat WindowManager WIN死亡信号发出，因为我的GPS正在停止。我无法找到如何解决这个问题。
有人可以告诉我原因并告诉我解决办法吗？