我正在尝试通过向其pendingIntent提供唯一的requesCode来在位置侦听器中添加多个邻近警报，但是我无法获取设置位置的警报。并且应用程序也多次崩溃，请帮忙
这是我的代码
public class LocationTrackerService extends Service implements LocationListener {
private static final long RADIUS = 1000; // in Meters
private static final long PROX_ALERT_EXPIRATION_TIME = -1;
Context context;
String msg;
LocationManager locationManager;
public final int MINIMUM_UPDATE_DISTANCE = 100;// in meters
public final int MINIMUM_UPDATE_INTERVAL = 30 * 1000;// in seconds
public static String PROX_ALERT_INTENT = "com.ginormous.transportmanagement.ProximityAlert";
LocationAlertReceiver proximityAlertReceiver;
private static final NumberFormat nf = new DecimalFormat("##.########");
IntentFilter filter;
ArrayList<LocationModel> locationdata;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
context = getApplicationContext();
getPickuppoints();
registerIntents();
//will register receiver
registerReceiver();
Log.d("TAG", "service started");
return START_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
private void registerIntents() {
if (locationdata!=null && locationdata.size()>0) {
// TODO Auto-generated method stub
for (int j = 0; j < locationdata.size(); j++) {
LocationModel obj = locationdata.get(j);
setProximityAlert(obj);
}
}
}
private void getPickuppoints(){
Cursor cur=null;
Dbhelper db=new Dbhelper(context);
SQLiteDatabase sqldb=db.getReadableDatabase();
try {
String query="select * from "+Dbhelper.TBL_LATLONG;
cur=sqldb.rawQuery(query, null);
if(cur.getCount()>0){
locationdata=new ArrayList<LocationModel>();
for(cur.moveToFirst();!cur.isAfterLast();cur.moveToNext()){
locationdata.add(
new LocationModel(
cur.getString(cur.getColumnIndex(Dbhelper.COL_LATLONG_PICKUPID)),
cur.getString(cur.getColumnIndex(Dbhelper.COL_LATLONG_PICKUP_NAME)),
cur.getDouble(cur.getColumnIndex(Dbhelper.COL_LATLONG_LATTITUDE)),
cur.getDouble(cur.getColumnIndex(Dbhelper.COL_LATLONG_LONGITUDE)),
cur.getString(cur.getColumnIndex(Dbhelper.COL_LATLONG_ROUTEID)),
cur.getString(cur.getColumnIndex(Dbhelper.COL_LATLONG_ROUTENUMBER))));
}
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
cur.close();
db.close();
sqldb.close();
}
@Override
public void onLocationChanged(Location location) {
try {
if (locationManager!=null) {
// TODO Auto-generated method stub
String latt = nf.format(location.getLatitude());
String longi= nf.format(location.getLongitude());
Toast.makeText(context, latt+" : "+longi, Toast.LENGTH_LONG).show();
Log.d("TAG", "latlong details" + latt+" : "+longi);
/*Location pointLocation = new Location("POINT_LOCATION");
pointLocation.setLatitude(latlongsFixed.get(index));
pointLocation.setLongitude(77.36438);
float distance = location.distanceTo(pointLocation);
Log.d("TAG", "" + distance);*/
// Toast.makeText(context,"you are meters away from your point of interest.",
// Toast.LENGTH_LONG).show();
Singelton.getInstance().setLastKnownLocation(location);
if (Utilities.checkInternetConnection(getApplicationContext())) {
if (Singelton.getInstance().getRouteNumber() != null)
sendLongLat(latt,longi);
}
}
} catch (Exception e) {
// TODO Auto-generated catch block
Toast.makeText(getApplicationContext(), "Exception in onLocationChanged()", Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
if(locationManager!=null)
locationManager.removeUpdates(this);
unregisterReceiver(proximityAlertReceiver);
}
@Override
public boolean onUnbind(Intent intent) {
// TODO Auto-generated method stub
return super.onUnbind(intent);
}
public void sendLongLat(final String latti, final String longi) {
new AsyncTask<String, Void, String>() {
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
String msg = null;
try {
JSONObject json = new JSONObject(result);
String status = json.getString("STATUS");
if (status.equalsIgnoreCase("ok")) {
msg = "Location sent";
} else {
msg = "Something went wrong";
}
Toast.makeText(getApplicationContext(), msg,
Toast.LENGTH_LONG).show();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
ArrayList<String> lines = new ArrayList<String>();
Connection db = new Connection();
String routeId = Singelton.getInstance().getRouteId();
if (Utilities.checkInternetConnection(getApplicationContext())) {
try {
lines = db.putLatLong("putLatLong", "2"// route id
, longi, latti);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return lines.get(0);
}
}.execute();
}
private void setProximityAlert(LocationModel obj) {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if( !locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) ) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("GPS not enabled"); // GPS not found
builder.setMessage("Please switch on the GPS of your device"); // Want to enable?
builder.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogInterface, int i) {
context.startActivity(new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
});
builder.setNegativeButton("OK", null);
builder.create().show();
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
MINIMUM_UPDATE_INTERVAL, MINIMUM_UPDATE_DISTANCE, this);
Intent intent = new Intent(PROX_ALERT_INTENT+"."+obj.getPickupId());//
intent.putExtra("LOCATION", obj);
PendingIntent proximityIntent = PendingIntent.getBroadcast(context, Integer.parseInt(obj.getPickupId())// unique id/request code
, intent, PendingIntent.FLAG_CANCEL_CURRENT);
locationManager.addProximityAlert(
obj.getLat(), // the latitude of the central point of the alert region
obj.getLongi(), // the longitude of the central point of the alert region
RADIUS, // the radius of the central point of the alert region, in meters
PROX_ALERT_EXPIRATION_TIME, // time for this proximity alert, in milliseconds, or -1 to indicate no expiration
proximityIntent // will be used to generate an Intent to fire when entry to or exit from the alert region is detected
);
filter = new IntentFilter(PROX_ALERT_INTENT);
}
private void registerReceiver()
{
proximityAlertReceiver=new LocationAlertReceiver();
registerReceiver(proximityAlertReceiver, filter);
}
}
接近警报接收器
public class LocationAlertReceiver extends BroadcastReceiver{
private int NOTIFICATION_ID=1000;
public static String PROX_ALERT_INTENT = "com.ginormous.transportmanagement.ProximityAlert";
private String uniqueid="";
LocationModel locaObj;
Context context;
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub\
this.context=context;
try {
LocationModel model=((LocationModel) intent.getSerializableExtra("LOCATION"));
Toast.makeText(context, "Proxmity alert receiver; id : "+model.getPickupId(),
Toast.LENGTH_SHORT).show();
removeProximityAlert(context, PROX_ALERT_INTENT+"."+model.getPickupId());
Toast.makeText(context, "proxmity removed", 1).show();
} catch (Exception e) {
// TODO: handle exception
Toast.makeText(context, "exception in Proxmity alert receiver",
Toast.LENGTH_SHORT).show();
}
/*if(intent.getExtras().getSerializable("LOCATION")!=null){
locaObj=(LocationModel) intent.getExtras().getSerializable("LOCATION");
}
String KEY=LocationManager.KEY_PROXIMITY_ENTERING;
Boolean isEntering=intent.getBooleanExtra(KEY, false);
if(isEntering){
NotificationManager notificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Intent intent2 = new Intent(context, MainLogin.class);
PendingIntent pendingIntent = PendingIntent.getActivity(
context, 0, intent2, PendingIntent.FLAG_CANCEL_CURRENT);
Notification notification = createNotification();
notification.setLatestEventInfo(context, "Proximity Alert!",
"Location : "+locaObj.getPickupName()+",", pendingIntent);
notificationManager.notify(NOTIFICATION_ID, notification);
Log.d(getClass().getSimpleName(), "entering");
removeProximityAlert(context,locaObj.getPickupId());
//this will send the details to server
if(Utilities.checkInternetConnection(context))
new SendArrivalDetails().execute(locaObj.getPickupId());
else
Utilities.sendArrivalDetails(context, locaObj.getPickupId(),"N");
}
else
Log.d(getClass().getSimpleName(), "exiting");
*/
}
private void removeProximityAlert(Context context,String uniqueid2) {
// TODO Auto-generated method stub
try {
LocationManager locationManager=(LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
Intent intent=new Intent(PROX_ALERT_INTENT+"."+uniqueid2);
PendingIntent pendingIntent=PendingIntent.getBroadcast(context, Integer.parseInt(uniqueid2), intent, 0);
locationManager.removeProximityAlert(pendingIntent);
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e) {
// TODO: handle exception
Toast.makeText(context, "error in removing promity alert for "+uniqueid2, Toast.LENGTH_SHORT).show();
}
}
private Notification createNotification() {
Notification notification = new Notification();
notification.icon = R.drawable.ic_launcher_transport;
notification.when = System.currentTimeMillis();
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notification.flags |= Notification.FLAG_SHOW_LIGHTS;
notification.defaults |= Notification.DEFAULT_VIBRATE;
notification.defaults |= Notification.DEFAULT_LIGHTS;
notification.ledARGB = Color.WHITE;
notification.ledOnMS = 1500;
notification.ledOffMS = 1500;
return notification;
}
public class SendArrivalDetails extends AsyncTask<String, Void, String> {
String pickupid="";
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
ArrayList<String> lines=new ArrayList<String>();
pickupid=params[0];
try {
Connection db=new Connection();
Calendar cal=Calendar.getInstance();
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
db.saveArrivalDetails("savepickuptimer", pickupid, Singelton.getInstance().getAttType(),sdf.format(cal.getTime()));
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return lines.get(0);
}
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
try {
JSONObject jsonObject=new JSONObject(result);
String response=jsonObject.getString("STATUS");
if(response.equals("STATUS")){
Utilities.sendArrivalDetails(context, pickupid,"U");
Toast.makeText(context, "proximity arrival details sent", 1).show();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Toast.makeText(context, "error sending proximity arrival details", 1).show();
}
}
}
}
Menifest文件中的权限是
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
答案 0 :(得分：5)
您必须保存所有邻近区域ID（请求代码），当您想删除这些区域时，只需调用从locationmanager中删除即可。例如，
Intent intent = new Intent();
intent.setAction(AppConstants.BROAD_ACTION);
for(int i=0;i<countRegionIDArr.size();i++){
PendingIntent pendingIntent = PendingIntent.getBroadcast(AlertService.this, countRegionIDArr.get(i), intent, 0);
mlocManager.removeProximityAlert(pendingIntent);
}