gps

rGPRMC is an open source B4R B4XLib for parsing the GPS NMEA RMC sentence message. Obtain Lat / Lon position, Direction Indicator, Speed, Course an Timestamp. Addition functions: calculate the distance between, the course to for two Lat / Lon positions or time difference. Attached rGPRMC.zip...

Dispongo di un app il cui obiettivo e' leggere la posizione via gps telefono ed inviarla periodicamente, ogni minuto, al sistema centrale, un pc che raccoglie i dati e li archivia L'app dovrebbe rimanere permanentemente in lavoro, h24 Su una decina di telefoni uguali, capita che un buon 50%...

Hi all. I have a question about FusedLocationProvider. I granted permission to use Location in my app, it works fine. Now I have a situation with one phone where GPS itself is turned off (the that under Connections settings). So my code tries to connect to FusedLocation Provider, connection is...

Hello, please apologize my english, i am doing an B4A app and i need to track use gps coordinates. I did it in the past without problem, but now i am getting an error exactly in this line: Starter.rp.CheckAndRequest(Starter.rp.PERMISSION_ACCESS_FINE_LOCATION) I added the standard starter...

Hello All, I'm using this sample code to implement location services in an app: https://www.b4x.com/android/forum/threads/location-gps.46148/#content I notice that, in the sample, when locManager.Initialize("LocManager") is called , Iphone automatically shows a message requesting...

Dispongo di un programma che, usando come base la lettura gps indicata da Erel, registra la posizione ogni 60 secondi su file di log locale Dopo diverse ore di funzionamento corretto, e solo su alcuni telefoni, l'app improvvisamente si spegne Leggo su alcuni articoli che potrebbe essere...

Hi, This b4Xlib contains a custom view (cvMap) which can display Open Street Map. The tiles are retrieved from the internet and cached in a database. You can add shapes and images on the map. UI : - Lat/lng Center of the map - Zoom Level - Compass Direction with rotation - Scale - Button...

(sorry for my english, it's just google translate) Hi! I hope I am not breaking any forum rules with this post. I require a developer to make an app that allows drawing georeferenced polygons, that is, that the app shows a georeferenced photograph (the orthophotos already exist) and several...

Hola! Espero no estar rompiendo alguna regla del foro con este post. Requiero un desarrollador que haga una app que permita dibujar polígonos georreferenciados, es decir, que la app muestre una fotografía georreferenciada (ya se tienen las ortofotos) y sobre ella se dibuje (punto a punto)...

Well... Hi to all... First of all - my english not so good.... Sometimes you want to share something for free - but sometimes feeling that job you ve made must be payed... I am not so good on marketing - but 6 months of work (real: may be 2 years at total)... not little... I am selling the...

With this class, you can check if the GPS location coordinate is inside a polygon. You can use this class to check whether the user is inside a building, shopping mall or any custom shape. This class is only for B4A and B4I. Here is how can you get the coordinates of an establishment (school...

Hi. I'm trying to have two timers working at the same time (GPS timer and another timer). But after a while, only keep working the another timer, and the GPS timer is OFF. it may be because one timer cancels the other? I attach the log (GPS Recibido is when i reseive GPS_LocationChanged and...

Hi everyone. I was wondering if it's possibile to set up a geofence that when you enter (or exit), triggers an event catchable with the app closed. (like Apple "Find My" app, that can send a notification to you when a friend leave/arrive a place). I'm not knowledge about this things , so I'm...

Hello all, I'm trying to use a webview that access a site which requires the location, but besides I requested and allowed PERMISSION_ACCESS_FINE_LOCATION in the app I'm still getting the message about gps authorization required inside the webview - there is no any pop up to request that...

Hi, I’m using the library iLocation, with the various PlisExtra from Erel’s tutorial about background tracking. The problem is that it isn’t very accurate. There is something like “Fine location/Coarse Location” of b4a? Or a parameter to set it to be more precise ? Thanks !

Greetings, I'm using the GNSS library and would like to know how to prevent it from turning off the GPS when exiting my app or pressing the phone home button. We need to make sure the GPS stays on even if the app is not showing on the screen. All of the GPS coding is in the Starter module...

Hi, i took a look to this example. In case the user manually disable the location option, how can I show again the msgbox to ask to enable it by code? Maybe to put in the "LocManager_AuthorizationStatusChanged" event

As of Android 8.0 you need to start a service in foreground mode to prevent the system from killing it. This results in a persistent notification. I went through the background location tracking tutorial here. https://www.b4x.com/android/forum/threads/background-location-tracking.99873/ I can...

Hi everyone, i'm coding an app for quite a whille (before the update), and i quitted beacuse the SO kill my foreground process while the app is in background, so after an random period of time it stop working. I wish to know if there is a way with the new update to prevent the OS to kill my...

Hola a todos, tengo el mismo problema, ya logre quitar el formato -98:276,5149 -26:03,43574 y dejarlo limpio mi problema surge que cuando tengo 2 o 3 numeros despues del "-" 98 -> -198 ó menos caracteres, cómo 276,519 pierdo las coordenadas reales, podrian ayudarme o facilitarme el codigo de...