Does anyone have a best practice on how to present 30+ items (numbers, say between 1 and 30) on an android screen? I thought about using a number field, but maybe it's better to make a screen with all the numbers? Or, alternatively, my goodness, a scroll list of those 35 elements with the most used first? Any best practices out there?
Android provides a widget which allows the user to select a number from a predefined range.
The number picker's appearance depends on the current theme.
For more information, see the NumberPicker reference in the Android Developer docs.