/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.widget;
import android.view.View;
import android.view.ViewGroup;
/**
* 扩展自 {@link Adapter} 的适配器,是 {@link android.widget.Spinner}
* 与数据之间的一座桥梁.Spinner 适配器允许定义两个不同的视图:
* 一个是在 Spinner 上显示数据,另一个是按下 Spinner 时在下拉列表里显示数据.
* @author translate by 德罗德(Android中文翻译组)
* @author convert by cnmahj
*/
public interface SpinnerAdapter extends Adapter {
/**
* <p>获得一个用于在下列菜单中显示数据集中指定位置的数据的 {@link android.view.View}.</p>
*
* @param position 要取得的条目的视图索引
* @param convertView 重新利用的旧视图(如果可能的话).
* 注意:在使用之前应该确保这个视图不是空的并且类型合适.
* 如果该视图无法转换为可以显示正确数据的视图,该方法会创建新试图.
* @param parent 视图最终将依附的父对象
* @return 一个对应指定位置的数据的 {@link android.view.View}.
*/
public View getDropDownView(int position, View convertView, ViewGroup parent);
}