Android Open Source - AndroIUT Sectioned Adapter

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.iutdijon.androiut2.schooling.adapters;
//from w w w  . j  a va2  s. c  o m
import java.util.ArrayList;
import java.util.List;

import android.view.View;
import android.view.ViewGroup;
import android.widget.Adapter;
import android.widget.BaseAdapter;

/**
 * Permet de cr?er une liste avec un champ titre pour chaque sous partie de la liste
 * @author Morgan Funtowicz
 *
 */
public abstract class SectionedAdapter extends BaseAdapter {
  
    abstract protected View getHeaderView(String caption, int index, View convertView, ViewGroup parent);
    
    private List<Section> sections;
    private static int TYPE_SECTION_HEADER = 0;

    public SectionedAdapter() {
      super();
      sections = new ArrayList<Section>();
    }

    SectionedAdapter(int sectionCount){
      sections = new ArrayList<Section>(sectionCount);
    }
    public void addSection(String caption, Adapter adapter) {
        sections.add(new Section(caption, adapter));
    }
   
    public void clear() {
        sections.clear();
    }

    @Override
  public Object getItem(int position) {
        for (Section section : this.sections) {
            if (position == 0) {
              return (section);
            }

            int size = section.adapter.getCount() + 1;

            if (position < size) {
              return (section.adapter.getItem(position - 1));
            }

            position -= size;
        }

        return null;
    }

    @Override
  public int getCount() {
        int total = 0;

        for (Section section : this.sections) {
                total += section.adapter.getCount() + 1; // add one for header
        }

        return total;
    }

    @Override
  public int getViewTypeCount() {
        int total = 1; // one for the header, plus those from sections

        for (Section section : this.sections) {
                total += section.adapter.getViewTypeCount();
        }

        return total;
    }

    @Override
  public int getItemViewType(int position) {
        int typeOffset = TYPE_SECTION_HEADER + 1; // start counting from here

        for (Section section : this.sections) {
            if (position == 0) {
                    return TYPE_SECTION_HEADER;
            }

            int size = section.adapter.getCount() + 1;

            if (position < size) {
                    return typeOffset + section.adapter.getItemViewType(position - 1);
            }

            position -= size;
            typeOffset += section.adapter.getViewTypeCount();
        }

        return -1;
    }

    public boolean areAllItemsSelectable() {
        return (false);
    }

    @Override
  public boolean isEnabled(int position) {
        return getItemViewType(position) != TYPE_SECTION_HEADER;
    }

    @Override
  public View getView(int position, View convertView, ViewGroup parent) {
        int sectionIndex = 0;

        for (Section section : this.sections) {
            if (position == 0) {
                    return getHeaderView(section.caption, sectionIndex,convertView, parent);
            }

            int size = section.adapter.getCount() + 1;

            if (position < size) {
                    return section.adapter.getView(position - 1, convertView, parent);
            }

            position -= size;
            sectionIndex++;
        }

        return null;
    }

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

    /*
     * Classe repr?sentant une Section dans la liste. Chaque section poss?de sa propre liste d'enfant repr?sent?e ici par 
     * la variable adapter, qui correspond au mod?le.
     */
    class Section {
        String caption;
        Adapter adapter;

        Section(String caption, Adapter adapter) {
                this.caption = caption;
                this.adapter = adapter;
        }
    }
}

Java Source Code List

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