Android Code Snippet [B4X] check if the time format is 12h or 24h format

I needed a way to check if the user lives in 12h or 24h time format to give him the possibility to show an AM/PM switch when selecting a time.

There may be a better way to check this, but if I display the following code on an affected device, I see an "a" at the end which indicates AM/PM.

Log(DateTime.DeviceDefaultTimeFormat) 'h:mm a

Public Sub is12hTimeFormat As Boolean
    If DateTime.DeviceDefaultTimeFormat.ToLowerCase.Contains("a") Then
        Return True
    Else
        Return False
    End If
End Sub

 

[klaus]

In a 24h time format the hour symbol is "H".
In a 12h time format the hour symbol is "h".
So you could check with :
TwelveHourFormat = DateTime.DeviceDefaultTimeFormat.Contains("h")

 

[Ishmael]

The .contains method, is it case sensitive to detect H from h?

 

[klaus]

Yes, I tested the code before posting.