Android Question FocusChanged doesn't seem to work the second time around. (newbie)

[Marvin]

I have a text field with a default message like "Please enter text here"

I would like to blank the field when it has initially focus so the user can enter text.
If they then change focus by selecting some other button/label and return to this text field I want to blank the old text so that new text can be entered.

I thought this would work.

Sub edit_newtext_FocusChanged (HasFocus As Boolean)
text_field.Text=""
End Sub

And it does the very first time only. The routine is never fired again when the text_field is re-selected.
I also tried forcing focus to another element that didn't work either.

Any clues?
What am I missing?

 

[Marvin]

I created edit_newtext in designer

 

[Erel]

Not all views can be focused. Try it with two different EditTexts.