Android Question [Solved] How to show coordinates from a service in a label in the main activity

asales · Oct 21, 2019

I have this code in a service, based in Background locate tracking, without notifications.

B4X:

Sub GPS_LocationChanged (Location1 As Location)
   If DateTime.Now > LastUpdateTime + 15 * DateTime.TicksPerSecond Then
       LastUpdateTime = DateTime.Now
       Log(gpm.isInside(Location1.Latitude,Location1.Longitude,True))
   End If
End Sub

I want to show the latitude and longitude in a label, that is on the main activity.

How I can do this?

Thanks in advance for any tip.

advansis · Oct 21, 2019

Use CallSubDelayed2 statement.

1) Create a sub in your activity, ShowLocation
2) Inside your service: CallSubDelayed

In Main

B4X:

Sub ShowLocation (LC As Location)
    lblLocation.Text=LC.Latitude & " - " & LC.Longitude
End Sub

In service

B4X:

If SubExists(main,"ShowLocation") Then CallSubDelayed2(Main,"ShowLocation",Location1)

Hope this helps

asales · Oct 21, 2019

Thanks! This is it.

DonManfred · Oct 21, 2019

Check gps tutorial. It shows how it works
https://www.b4x.com/android/forum/threads/gps-tutorial.6592/#content

Android Question [Solved] How to show coordinates from a service in a label in the main activity

asales

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advansis

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asales

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Android Question [Solved] How to show coordinates from a service in a label in the main activity

asales

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