Spinner tutorial shows a malformed spinner widget

I have开发者_如何学编程 implemented the official Spinner tutorial, but when I run it, the spinner widget is malformed, I have attached this screenshot:

If instead of filling the spinner from code, I use the android:entries in the XML, the widget shows correctly.

Anyone knows why?

EDIT: Here is my code. And here is the code for main.xml and strings.xml

EDIT2: Ok, now I remember that my code was not extracted from the tutorial, but from the SDK samples directory, so the tutorial is fine, but not the SDK sample.

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You have to pay close attention in tutorials. In that tutorial when they instantiate the ArrayAdapter they reference another layout than you do.

You've referenced the android.R.layout.simple_spinner_dropdown_item where they have referenced the android.R.layout.simple_spinner_item layout.

The first one is used for displaying items in a drop-down and the second one is used to display the default Spinner appearance.