Android Question GPS location latitude longitude

[anaylor01]

I can't seem to get the lat and long.
If FirstTime Then
gps1.Initialize("GPS")
loc1.Initialize
loc2.Initialize
End If
lat = loc1.Latitude
Long1 = loc1.Longitude
Msgbox(lat & " Lat " & Long1 & " long1", "Loc")

 

[klaus]

You get the lat and long coordinates from the GPS only in the gps1_LocationChanged event routine !

 

[anaylor01]

I have this
lat = loc1.Latitude
Long1 = loc1.Longitude
Msgbox(lat & " Lat " & Long1 & " long1", "Loc")
in the gps changed routine and it only shows 0.

 

[klaus]

You must show the whole code of the routine.
It's difficult to give a concrete advice with small code snippets, we need to guess what you have done and how.
Try this:

Sub GPS+_LocationChanged(Location1 As Location)
    MsgBox(Location1.Latitude & " Lat " & Location1.Longitude & " long1", "Loc")
End Sub

Do you try it insides ?
GPS works only outsides.

 

[anaylor01]

That worked. It must be the data types. I have them as double. Should they be something else?

 

[klaus]

If you look at the documentation you'll see that Location1.Latitude and Location1.Longitude are Doubles.

 

[anaylor01]

I did and that is what I made them so I think it is that I had them named loc1.latitude and loc1.longitude.

 

[anaylor01]

Ok here is my problem now. When I try to zoom on the map it keeps resetting because following code is in the gps location change sub. Also I want to use the typical red stick pin to report location.

MapCenter.Initialize(Location1.Latitude, Location1.Longitude)
ZoomLevel=25
MapView1.Zoom=ZoomLevel
MapView1.SetCenter3(MapCenter)

 

[klaus]

I have never used MapView.

You should read the documentation and try.
Set a Marker.
Define a MarkersOverlay.
Add the MarkersOverlay to the MapView.

You should define this outside the GPS1_LocationChange routine.

 

[jsanchezc]

This sample gets latitude and longitude from cell location, you can change it
for GPS location.
I mix two samples from this forum.
Hope this help

Also you can view this sample:
http://www.b4x.com/android/forum/th...ormation-display-map-and-send-by-email.37615/

 

[anaylor01]

What I am trying to do should be pretty simple to someone who knows what they are doing. I basically just want to display a small map with a marker of the users current location. That's it.

 

[anaylor01]

I can't get a marker to show up. here is my code. Some of it is commented out because I have tried those ways also.
Sub GPS_LocationChanged (Location1 As Location)
MapCenter.Initialize(Location1.Latitude, Location1.Longitude)
' mark.Initialize("title","descr",MapCenter.Latitude, MapCenter.Longitude,Null)
mark.Initialize("title","descr",Location1.Latitude, Location1.Longitude,Null)
ZoomLevel=25
MapView1.Zoom=ZoomLevel
MapView1.SetCenter3(MapCenter)
End Sub

 

[anaylor01]

Can someone help?
Sub GPS_LocationChanged (Location1 As Location)
Dim bm_user As BitmapDrawable
bm_user.Initialize(LoadBitmap(File.DirAssets, "Pointer.jpg"))
'lblLat.Text = "Lat = " & Location1.ConvertToMinutes(Location1.Latitude)
'lblLon.Text = "Lon = " & Location1.ConvertToMinutes(Location1.Longitude)
'Msgbox(Location1.Latitude & " Lat " & Location1.Longitude & " long1", "Loc")
MapCenter.Initialize(Location1.Latitude, Location1.Longitude)

' mark.Initialize("title","descr",MapCenter.Latitude, MapCenter.Longitude,Null)
mark.Initialize("title","descr",Location1.Latitude, Location1.Longitude,bm_user)

ZoomLevel=25
MapView1.Zoom=ZoomLevel
MapView1.SetCenter3(MapCenter)

 

[anaylor01]

I can't figure out how to get a marker to show up. Can anyone help?

 

[Erel]

Please use [ code ] [ /code ] tags (without spaces) when posting code.

There is an example of adding a marker here: http://www.b4x.com/android/forum/threads/google-maps-android-v2-tutorial.24415/#content

 

[anaylor01]

I am using OSMdroid.

 

[Mark Read]

Hello anaylor01, maybe I can help a little. I am working on a project with OSMdroid and gps. My code is not yet complete but the map changes according to the gps coordinates, which is what you want I think. No layout file is required. The camera part is commented out. If you turn it on, the map may not work.
You will need the following libraries:
Camera 2.20
Core 2.71
GPS 1.11
OSMDroid 3.53
Phone 2.10
Reflection 2.40

Hope this helps. Regards
Mark

 

[anaylor01]

Thanks Mark but yours does the same as mine or the opposite of mine. Yours shows the marker but no map. Mine shows the map but no marker.

 

[Mark Read]

Strange because it works form me on my samsung galaxy tab 10 and on my emulator running API 8! Note, the only map source which works is MapquestOSM, none of the others work with me.

Regards
Mark