Android Question updating label text in a loop

stachiwma · Nov 25, 2015

I'm missing something obvious. I was playing with the GPS example, and the section where the satellite information is being displayed in a label.. I copied that section of cod ein to a Boy Scout program Im working on, and for the life of me All it displays is "satellites:". Added logfile trackina dn the loop is executing.. What setting in the designer or what did I miss to set. The example program runs perfectly.

B4X:

Sub GPS_GpsStatus (Satellites As List)
    lblSatellites.Text = "Satellites:" & CRLF
    For i = 0 To Satellites.Size - 1
        Dim Satellite As GPSSatellite
        Satellite = Satellites.Get(i)
        Log("i="&i&" used in fix="&Satellite.UsedInFix&" prn#="&Satellite.Prn)
        lblSatellites.Text = lblSatellites.Text & CRLF & Satellite.Prn & _
            " " & Satellite.Snr & " " & Satellite.UsedInFix & " " & Satellite.Azimuth _
            & " " & Satellite.Elevation
    Next
End Sub

This is driving me crazy. Thanks

Dr. Mike

Roycefer · Nov 25, 2015

Is your Label big enough to display all that text? If so, try using a StringBuilder to assemble your display text instead of directly adding it to the Label. Then, when it's all assembled, set the Label.Text = StringBuilder.toString.

klaus · Nov 25, 2015

I don't know what the problem is on your device.
I wrote a small test program with your code and it works !
Attached the test program.

As already suggested by Roycefer you should define a String variable and build the text in the loop and at the end set the lblSatellites.Text property like in the code in the GPSExample program.

Android Question updating label text in a loop

stachiwma

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Roycefer

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klaus

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Android Question updating label text in a loop

stachiwma

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Roycefer

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klaus

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