BookmarkAdapter.java

/*
 * Copyright (C) 2011 ZXing authors
 *
 * 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 com.google.zxing.client.android.share;

import com.google.zxing.client.android.R;

import android.content.Context;
import android.database.Cursor;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.google.zxing.FakeR;

/**
 * A custom adapter designed to fetch bookmarks from a cursor. Before Honeycomb we used
 * SimpleCursorAdapter, but it assumes the existence of an _id column, and the bookmark schema was
 * rewritten for HC without one. This caused the app to crash, hence this new class, which is
 * forwards and backwards compatible.
 *
 * @author dswitkin@google.com (Daniel Switkin)
 */
final class BookmarkAdapter extends BaseAdapter {
  private final Context context;
  private final Cursor cursor;

  private static FakeR fakeR;
  BookmarkAdapter(Context context, Cursor cursor) {
	fakeR = new FakeR(context);
    this.context = context;
    this.cursor = cursor;
  }

  @Override
  public int getCount() {
    return cursor.getCount();
  }

  @Override
  public Object getItem(int index) {
    // Not used, so no point in retrieving it.
    return null;
  }

  @Override
  public long getItemId(int index) {
    return index;
  }

  @Override
  public View getView(int index, View view, ViewGroup viewGroup) {
    LinearLayout layout;
    if (view instanceof LinearLayout) {
      layout = (LinearLayout) view;
    } else {
      LayoutInflater factory = LayoutInflater.from(context);
      layout = (LinearLayout) factory.inflate(fakeR.getId("layout", "bookmark_picker_list_item"), viewGroup, false);
    }

    if (!cursor.isClosed()) {
      cursor.moveToPosition(index);
      String title = cursor.getString(BookmarkPickerActivity.TITLE_COLUMN);
      ((TextView) layout.findViewById(fakeR.getId("id", "bookmark_title"))).setText(title);
      String url = cursor.getString(BookmarkPickerActivity.URL_COLUMN);
      ((TextView) layout.findViewById(fakeR.getId("id", "bookmark_url"))).setText(url);
    } // Otherwise... just don't update as the object is shutting down
    return layout;
  }
}