Java:
//Paste Expiration
spinnerPasteExpiration = (Spinner) findViewById(R.id.spinnerPasteExpiration);
String[] items = new String[]{"Never","10 Minutes","1 Hour", "1 Day", "1 Month"};
ArrayAdapter <String> pasteadapter = new ArrayAdapter <String> (this,               android.R.layout.simple_spinner_item,items);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerPasteExpiration.setAdapter(pasteadapter);

Layout XML:
        <LinearLayout
            android:id="@+id/expireLayout"
            android:layout_height="wrap_content" android:layout_width="fill_parent">
            <TextView android:text="@string/textPasteExpires" android:id="@+id/textView5" android:layout_width="wrap_content" android:gravity="center|center_vertical" android:layout_height="fill_parent"></TextView>
            <Spinner android:layout_height="fill_parent" android:id="@+id/spinnerPasteExpiration" android:layout_width="fill_parent"></Spinner>
        </LinearLayout>

Result:
http://img228.imageshack.us/img228/9085/device20110820231935.png