如何限制在AutoCompleteTextView中一次顯示在屏幕上的下拉菜單項的數量？

Question

我有一個AutoCompleteTextView並希望限制一次在屏幕上可見的下拉菜單項的數量。 目前，它會填滿整個屏幕，但我可以將它限制為2個項目，並帶有滾動條以顯示更多內容。

Answer 1

呼叫setDropDownHeight(int height)的方法AutoCompleteTextView 。

Answer 2

public class MainActivity extends AppCompatActivity {

    AutoCompleteTextView autoCompleteTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        autoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.auto);

        String item[] = {"January", "February", "March", "April",
                "May", "June", "July", "August",
                "September", "October", "November", "December"};


        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getApplicationContext(),
                android.R.layout.simple_list_item_1, item);
        autoCompleteTextView.setAdapter(adapter);
        autoCompleteTextView.setThreshold(1);
    }
}