Android Question Validate the minumum value in a EditText

[Antonio Ferreira]

How can i validate a numeric minimum value in a EditText on a xcustomlistview (with lazy loading)
Validating the maximum value is easy with EditText_Textchanged event.

Thanks

 

[LucaMs]

How can i validate a numeric minimum value in a EditText on a xcustomlistview (with lazy loading)
Validating the maximum value is easy with EditText_Textchanged event.

Thanks

Same way!

 

[Antonio Ferreira]

Same way!

I have a minimum value of 50 and I want to write 72, in the first digit I write (7), the editText changevent warns me that the value is less than the minimum.
Thanks for the reply

 

[LucaMs]

But this does not depend on the EditText being inside a CustomListview.

'Not tested

Private Sub EditText1_TextChanged (Old As String, New As String)
    If New.Length > 1 And New.As(Int) < 50 Then
        xui.MsgboxAsync("At least 50", "B4X")
        EditText1.Text = Old
    End If
End Sub

 

[Antonio Ferreira]

But this does not depend on the EditText being inside a CustomListview.

'Not tested

Private EditText1_TextChanged (Old As String, New As String)
    If New.Length > 1 And New.As(Int) < 50 Then
        xui.MsgboxAsync("At least 50", "B4X")
        EditText1.Text = Old
    End If
End Sub

Validate the minimum value with EditText1_TextChanged (Old As String, New As String) i always have the warns that the value is less than the minimum.
in your example:
- if ! want to write 272 in the editText, when i write the second digit (27) the EditText1_TextChanged event warns me that the value is less than the minimum.
- if i only write 2 in the editText i don´t have the validate error message.

Validate with EditText1_FocusChanged on in a xcustomlistview with lazy loading is not simple.

it's not worrying. i just have to live with it

Thank you for the reply.

 

[LucaMs]

Validate the minimum value with EditText1_TextChanged (Old As String, New As String) i always have the warns that the value is less than the minimum.
in your example:
- if ! want to write 272 in the editText, when i write the second digit (27) the EditText1_TextChanged event warns me that the value is less than the minimum.
- if i only write 2 in the editText i don´t have the validate error message.

Validate with EditText1_FocusChanged on in a xcustomlistview with lazy loading is not simple.

it's not worrying. i just have to live with it

Thank you for the reply.

My code avoids the problem you highlighted, with the single digit example.
It is clear that you cannot use the Changed event in other cases, like the one you wrote above. You will need to add a button to submit changes.

Again, the CustomListView has nothing to do with the problem.

 

[emexes]

i just have to live with it

What about if you do the limit check when the user "leaves" the field ie on FocusChange or LostFocus event?

Admittedly, isn't quite as instantaneous at letting user know there is a problem.

On the other hand, isn't stepping on their fingers prematurely either.

 

[Sagenut]

Here I made the check to happen after 1 second without writing into the edittext.
So there is time to input more than 1 digit.

 

[Antonio Ferreira]

Here I made the check to happen after 1 second without writing into the edittext.
So there is time to input more than 1 digit.

Thanks for the solution with a timer on the TextChanged event
Works great