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You can check out the original android layouts definitions for the android.R.layout.simple_spinner_item resource bellow. Let’s call it spinner_dropdown_item.xml: Īnother change in the declaration of the spinner: ArrayAdapter adapter = ArrayAdapter.createFromResource(this, R.anets_array, R.layout.spinner_item) ĪtDropDownViewResource(R.layout.spinner_dropdown_item) Īnd this is what we get: Default spinner item definitions If you want to customize the dropdown list items you will need to create a new layout file. This is my spinner_item.xml: Īnd then change your declaration of the spinner to use the R.layout.spinner_item: ArrayAdapter adapter = ArrayAdapter.createFromResource(this, R.anets_array, R.layout.spinner_item) What you need to do is create your own layout file with a custom definition for the spinner item. Nothing will actually change in your app.

When you apply the textSize to a Spinner, like so: Changing the text size or color of a Spinner is not as simple as just using the android:textSize attribute on the Spinner element.