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/*
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* 该类实现了一个自定义的文件夹列表适配器，用于在Android应用中展示文件夹列表的数据，并绑定到相应的视图上。
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*/
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package net.micode.notes.ui;
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import android.content.Context;
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import android.database.Cursor;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.CursorAdapter;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import net.micode.notes.R; // 导入资源文件
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.NoteColumns;
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public class FoldersListAdapter extends CursorAdapter {
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public static final String[] PROJECTION = {
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NoteColumns.ID,
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NoteColumns.SNIPPET
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};
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public static final int ID_COLUMN = 0;
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public static final int NAME_COLUMN = 1;
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// 构造方法，初始化文件夹列表适配器
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public FoldersListAdapter(Context context, Cursor c) {
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super(context, c);
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}
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// 创建新的视图
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@Override
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public View newView(Context context, Cursor cursor, ViewGroup parent) {
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return new FolderListItem(context);
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}
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// 绑定数据到视图
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@Override
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public void bindView(View view, Context context, Cursor cursor) {
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if (view instanceof FolderListItem) {
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String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ?
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context.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
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((FolderListItem) view).bind(folderName);
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}
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}
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// 获取文件夹名称
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public String getFolderName(Context context, int position) {
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Cursor cursor = (Cursor) getItem(position);
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return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ?
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context.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
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}
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// 内部类，表示文件夹列表项
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private class FolderListItem extends LinearLayout {
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private TextView mName;
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// 构造方法，初始化文件夹列表项
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public FolderListItem(Context context) {
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super(context);
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inflate(context, R.layout.folder_list_item, this); // 加载布局
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mName = (TextView) findViewById(R.id.tv_folder_name); // 查找名称视图
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}
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// 绑定文件夹名称到视图
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public void bind(String name) {
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mName.setText(name);
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}
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}
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}
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