I have a MAP defined which contains multiple STRING entries. Most of them contain text - but some are "blank" - meaning they are "NULL".
When I attempt to load those entries into an EditText view, any MAP entry that is "NULL" generates a Java NullPointerException and the application terminates. However, if the MAP entry contains actual text, the assignment works fine.
For example, the following code will fail if "firstname" is NULL.
In order to circumvent the issue, I found that if I assign each MAP field to a STRING variable and then assign the EditText view to the STRING variable, all entries work fine - even the "NULL" entries.
For example, the following code works as desired, even when "firstname" is NULL.
Could someone please point me in the direction of where in the documentation this behavior is explained. I'm sure it's due to some kind of "conversion", perhaps... But I really don't understand why my "workaround" actually works.
When I attempt to load those entries into an EditText view, any MAP entry that is "NULL" generates a Java NullPointerException and the application terminates. However, if the MAP entry contains actual text, the assignment works fine.
For example, the following code will fail if "firstname" is NULL.
B4X:
EditText1.Text = Contacts.Chosen_Contact_Field_Map.Get("firstname")In order to circumvent the issue, I found that if I assign each MAP field to a STRING variable and then assign the EditText view to the STRING variable, all entries work fine - even the "NULL" entries.
For example, the following code works as desired, even when "firstname" is NULL.
B4X:
Dim Chosen_Contact_FirstName As String
Chosen_Contact_FirstName = Contacts.Chosen_Contact_Field_Map.Get("firstname")
EditText1.Text = Chosen_Contact_FirstNameCould someone please point me in the direction of where in the documentation this behavior is explained. I'm sure it's due to some kind of "conversion", perhaps... But I really don't understand why my "workaround" actually works.