B4J Code Snippet Detect mobile device

tummosoft · Jun 28, 2022

* Detect mobile device

B4X:

Sub Handle(req As ServletRequest, resp As ServletResponse)
    If req.GetHeader("User-Agent").Contains("Mobi") Then
        Log("Mobile Device")
        resp.SendRedirect("/mobile")
    Else
        Log("Not Mobile")
      
    End If
End Sub

Sandman · Jun 28, 2022

A small note: Considering that the header User-Agent can be set to be anything, this might not get the expected results in all cases.

amorosik · Jun 28, 2022

Sandman said:
A small note: Considering that the header User-Agent can be set to be anything, this might not get the expected results in all cases.

Yes, of course, but while waiting to find a better code, this already allows you to identify the calling device
And it's a very useful feature

AnandGupta · Jun 28, 2022

Sandman said:
Considering that the header User-Agent can be set to be anything

Believe me, normal users do not care nor know user-agent, neither they care about privacy blah blah.
We the geeks are burning ourselves on it. Not bad, but simple code like this works for 95% of our users.

This I found out after making few simple apps for our users.

ivanomonti · Mar 16, 2023

tummosoft said:

* Rileva dispositivo mobile

B4X:

Sub Handle(req As ServletRequest, resp As ServletResponse)
    If req.GetHeader("User-Agent").Contains("Mobi") Then
        Registro("Dispositivo mobile")
        resp.SendRedirect("/mobile")
    Altro
        Registro("Non mobile")
     
    Finisci se
Fine Sub[/CODICE]
[/QUOTE]
hi, example project!!

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