Android Question Validate IP Number

[Sinan Tuzcu]

Helo,

with the below Code, I try to validate an IP number.
But I get an Error msg.

Sub Validate_IPNUmmer(IP_Adresse As String) As Boolean
    Dim Match_IP As Matcher = Regex.Matcher("^(?:(?:25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)(?(?=\.?\d)\.)){4}$",IP_Adresse)
    If Match_IP.Find = True Then
        ToastMessageShow("IS IP ",True)
        Return True
        Else
            ToastMessageShow("Is not IP", True)
            Return False
    End If
End Sub

 

[thetahsk]

Helo,

with the below Code, I try to validate an IP number.
But I get an Error msg.

Sub Validate_IPNUmmer(IP_Adresse As String) As Boolean
    Dim Match_IP As Matcher = Regex.Matcher("^(?:(?:25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)(?(?=\.?\d)\.)){4}$",IP_Adresse)
    If Match_IP.Find = True Then
        ToastMessageShow("IS IP ",True)
        Return True
        Else
            ToastMessageShow("Is not IP", True)
            Return False
    End If
End Sub

'Tests given string if it looks like an ipv4 address
Public Sub IsValidIPv4Address(IPAddress As String) As Boolean
    Return Regex.IsMatch("^(([01]?\d\d?|2[0-4]\d|25[0-5])\.){3}([01]?\d\d?|2[0-4]\d|25[0-5])$", IPAddress)   
End Sub

'Tests given string if it looks like an ipv6 address
Public Sub IsValidIPv6Address(IPAddress As String) As Boolean
    Return Regex.IsMatch("^([0-9a-f]{1,4}:){7}([0-9a-f]){1,4}$", IPAddress)
End Sub

see https://www.b4x.com/android/forum/threads/ip-address-validation-using-regex.72789/

 

[Sinan Tuzcu]

great.