Android Question Convert string to long issue

[mcorbeel]

I am trying to convert a string of digits to a long value. On B4i it works fine, but on B4X it does not.

Dim t As String = "405006951190111400"
Log("t=" & t)
   
Dim i As Long = t
Log("i=" & i)

This gives:
t=405006951190111400
i=405006951190111424

Why is the i value different? How can I fix this?

 

[drgottjr]

question has been asked and addressed before: https://www.b4x.com/android/forum/threads/bug-converting-string-to-long.133584/#content
a couple remedies are suggested.
you can also use a java object

    Dim t As String = "405006951190111400"
    Log("t=" & t)
  
    Dim i As Long = t
    Log("i=" & i)
    
    Dim jo As JavaObject
    jo.InitializeStatic("java.lang.Long")
    Log(jo.RunMethod("parseLong",Array( t )))
    Log(jo.RunMethod("valueOf", Array(t)))

 

[Mahares]

Post #2 is correct. But another way is to use BigNumber library by aGraham:

Dim t As String = "405006951190111400"
    Log(t)
    Dim i As BigInteger   'need to download the B4A BigNumber library by aGraham. Needs to be in the B4A additional library folder
    i.Initialize(t)    '405006951190111400
    Log(i)    '405006951190111400

 

[mcorbeel]

Thanks everyone. Will look into it...