1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.widget; 18 19 import android.view.View; 20 import android.view.ViewGroup; 21 22 /** 23 * Extended {@link Adapter} that is the bridge between a 24 * {@link android.widget.Spinner} and its data. A spinner adapter allows to 25 * define two different views: one that shows the data in the spinner itself 26 * and one that shows the data in the drop down list when the spinner is 27 * pressed. 28 */ 29 public interface SpinnerAdapter extends Adapter { 30 /** 31 * Gets a {@link android.view.View} that displays in the drop down popup 32 * the data at the specified position in the data set. 33 * 34 * @param position index of the item whose view we want. 35 * @param convertView the old view to reuse, if possible. Note: You should 36 * check that this view is non-null and of an appropriate type before 37 * using. If it is not possible to convert this view to display the 38 * correct data, this method can create a new view. 39 * @param parent the parent that this view will eventually be attached to 40 * @return a {@link android.view.View} corresponding to the data at the 41 * specified position. 42 */ 43 public View getDropDownView(int position, View convertView, ViewGroup parent); 44 } 45
