小程序 Spinner图文混排源码.rar

/* * Copyright (C) 2008 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 net.sunniwell.spinnerdroplayout; import java.util.ArrayList; import android.content.Context; import android.content.res.Resources; import android.graphics.drawable.Drawable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; /** * Adapter showing the types of items that can be added to a {@link Workspace}. * <br>接口，用于显示项目的类型，可以添加到{@link Workspace}中的项目�? */ public class AddAdapter extends BaseAdapter { private final LayoutInflater mInflater; private final ArrayList<ListItem> mItems = new ArrayList<ListItem>(); public static final int ITEM_SHORTCUT = 0; public static final int ITEM_APPWIDGET = 1; public static final int ITEM_LIVE_FOLDER = 2; public static final int ITEM_WALLPAPER = 3; /** * Specific item in our list. * <br>我们的list要显示的项目 */ public class ListItem { public final CharSequence text; public final Drawable image; public final int actionTag; public ListItem(Resources res, int textResourceId, int imageResourceId, int actionTag) { text = res.getString(textResourceId); if (imageResourceId != -1) { image = res.getDrawable(imageResourceId); } else { image = null; } this.actionTag = actionTag; } } public AddAdapter(Main launcher) { super(); /** * 以下两种方式均可以： */ // mInflater = getLayoutInflater(); // 在Activity里面才行 // LayoutInflater inflater = LayoutInflater.from(context);// 也行�? mInflater = (LayoutInflater) launcher.getSystemService(Context.LAYOUT_INFLATER_SERVICE); // Create default actions Resources res = launcher.getResources(); mItems.add(new ListItem(res, R.string.group_shortcuts, R.drawable.ic_launcher_shortcut, ITEM_SHORTCUT)); mItems.add(new ListItem(res, R.string.group_widgets, R.drawable.ic_launcher_appwidget, ITEM_APPWIDGET)); mItems.add(new ListItem(res, R.string.group_live_folders, R.drawable.ic_launcher_folder_live, ITEM_LIVE_FOLDER)); mItems.add(new ListItem(res, R.string.group_wallpapers, R.drawable.ic_launcher_gallery, ITEM_WALLPAPER)); } public View getView(int position, View convertView, ViewGroup parent) { ListItem item = (ListItem) getItem(position); if (convertView == null) { convertView = mInflater.inflate(R.layout.add_list_item, parent, false); } TextView textView = (TextView) convertView; textView.setTag(item); //......................... textView.setText(item.text); textView.setCompoundDrawablesWithIntrinsicBounds(item.image, null, null, null); return convertView;// 齐霜给我讲清楚了,址引用? } public int getCount() { return mItems.size(); } public Object getItem(int position) { return mItems.get(position); } public long getItemId(int position) { return position; } @Override public View getDropDownView(int position, View convertView, ViewGroup parent) { ListItem item = (ListItem) getItem(position); if (convertView == null) { convertView = mInflater.inflate(R.layout.drop_list_item, parent, false); } TextView textView = (TextView) convertView; textView.setTag(item); textView.setText(item.text+"DRtest"); textView.setCompoundDrawablesWithIntrinsicBounds(item.image, null, null, null); return textView; } }