Android Open Source - Android-2DViewPager Two Dimensional View Pager Adapter

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *// www  .j ava2s. c  o  m
 *    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 co.bytera.twodimensionalviewpager.adapter;

import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import co.bytera.twodimensionalviewpager.R;

public class TwoDimensionalViewPagerAdapter extends PagerAdapter {

  /*
   *  For the demonstration purpose, 2-D of resource(integer) array is used.
   *  However, any types of data are able to be set.
   *  Array can be ragged as well.
   */
  private int[][] data = new int[0][0];
  private Context context;
  private int rowNumber = 0;
  
  /*
   *  Constructor: inject context here
   */
  public TwoDimensionalViewPagerAdapter(Context context) {
    this.context = context;
  }

  /*
   *  Set 2-D data
   */
  public void setData(int[][] data) {
    this.data = data;
  }
  
  /*
   *  Move page to the next row
   */
  public void nextRow() {
    if(rowNumber < data.length -1)
      rowNumber++;
  }
  
  /*
   *  Move page to the previous row
   */
  public void previousRow() {
    if(rowNumber > 0)
      rowNumber--;
  }
  
  /*
   * getCount() returns the number of items in the current row.
   */
  @Override
  public int getCount() {
    return data[rowNumber].length;
  }
  
  /*
   * Important: getItemPosition returns POSITION_NONE
   *    Otherwise, it PagerAdapter won't respond to the notifyDataSetChanged()
   */
  @Override 
  public int getItemPosition(Object object) {
    return POSITION_NONE;
  }

  @Override
  public Object instantiateItem(ViewGroup container, int position) {
    
    @SuppressWarnings("static-access")
    LayoutInflater inflater = (LayoutInflater)context
        .getSystemService(context.LAYOUT_INFLATER_SERVICE);
    
    /*
     * Layout is created from xml here, but it can be done by java coding as well
     */
    View view = inflater.inflate(R.layout.view_page, null);
    
    TextView textView = (TextView)view.findViewById(R.id.textView1);
    textView.setText(rowNumber + ", " + position);
    
    ImageView imageView = (ImageView)view.findViewById(R.id.imageView1);
    imageView.setImageResource(data[rowNumber][position]);
    
    container.addView(view);
    
    return view;
  }

  @Override
  public boolean isViewFromObject(View arg0, Object arg1) {
    return arg0 == ((View)arg1);
  }

  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
    container.removeView((View)object);
  }
}

Java Source Code List

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