Android Open Source - android-wheel Wheel View Adapter

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License

The source code is released under:

Apache License

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Java Source Code

/*
 *  Copyright 2011 Yuri Kanivets// www  .j  av a  2s. c o  m
 *
 *  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 kankan.wheel.widget.adapters;

import android.database.DataSetObserver;
import android.view.View;
import android.view.ViewGroup;

/**
 * Wheel items adapter interface
 */
public interface WheelViewAdapter {
  /**
   * Gets items count
   * @return the count of wheel items
   */
  public int getItemsCount();
  
  /**
   * Get a View that displays the data at the specified position in the data set
   * 
   * @param index the item index
   * @param convertView the old view to reuse if possible
   * @param parent the parent that this view will eventually be attached to
   * @return the wheel item View
   */
  public View getItem(int index, View convertView, ViewGroup parent);

  /**
   * Get a View that displays an empty wheel item placed before the first or after
   * the last wheel item.
   * 
   * @param convertView the old view to reuse if possible
     * @param parent the parent that this view will eventually be attached to
   * @return the empty item View
   */
  public View getEmptyItem(View convertView, ViewGroup parent);
  
  /**
   * Register an observer that is called when changes happen to the data used by this adapter.
   * @param observer the observer to be registered
   */
  public void registerDataSetObserver(DataSetObserver observer);
  
  /**
   * Unregister an observer that has previously been registered
   * @param observer the observer to be unregistered
   */
  void unregisterDataSetObserver (DataSetObserver observer);
}

Java Source Code List