Click on a button or onFocus, see textfield validation

I have 3 editfields and a button on my form.

Fields are:

Name (only allow Knight and space char)

Phone (allows only entry number)

E-mail (Validation has been applied to this)

I have a button SAVE.

Now before I can actually hit save them button, incase the entire field is empty it must raise an error dialog box or any other order promptly to prevent the entry of empty data. In my email field I inserted validations for all the properties of e-mail including the case of leaving the empty email field.

But now, what I want is, all fields should be checked for empty or empty space only once during the click on the button or on the focus.

Any sane person on the present guide, please

Thank you.

Hello

I tried as u suggested. I have included the code in my below Manager button and it worked great! Thank you very much

public void fieldChanged(Field field,int context)
            {
                if(field == showInputButton)
                {
                    if(TextField1.getText() == null || TextField1.getText().trim().length() == 0 || TextField2.getText() == null || TextField2.getText().trim().length() == 0 || TextField3.getText() == null || TextField3.getText().trim().length() == 0)
                        {
                            Dialog.alert("Cannot leave field blank!");
                        } 

                }
            }

Tags: BlackBerry Developers

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