Android Open Source - UniversalAndroidAdapter Universal List Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.krieger.libraries.adapter;
//w  ww .j  ava  2s.  c o  m
import java.util.ArrayList;

import android.database.DataSetObserver;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListAdapter;

import com.krieger.libraries.entities.HeadedList;
import com.krieger.libraries.interfaces.AdapterCommand;

public class UniversalListAdapter extends BaseAdapter implements ListAdapter {
  
  private LayoutInflater inflater = null;
  private int rowLayoutId;
  private ArrayList<Object> data;
  private AdapterCommand rowInflationAction;
  
  private ArrayList<Object> dataWithHeaders;
  private ArrayList<Integer> sectionHeaderIndexes;
  private int headerLayoutId;
  private AdapterCommand headerInflationAction;
  boolean isHeaderClickable = false;
  
  private boolean hasSections = false;
  private AdapterCommand[] refreshActions = null;
  private int[] refreshPositions = null;
  private Object[] refreshData = null;
  private int initialSelection = -1;
  private AdapterCommand initAction;
  
  public UniversalListAdapter(LayoutInflater inflater, int rowLayoutId,
      ArrayList<Object> data, AdapterCommand rowInflationAction) {
    this.inflater = inflater;
    this.rowLayoutId = rowLayoutId;
    this.data = data;
    this.rowInflationAction = rowInflationAction;
  }
  
  public UniversalListAdapter(LayoutInflater inflater, int rowLayoutId,
      ArrayList<Object> data, AdapterCommand rowInflationAction,
      int headerLayoutId, AdapterCommand headerInflationAction, boolean isHeaderClickable) {
    this.inflater = inflater;
    this.rowLayoutId = rowLayoutId;
    this.data = data;
    this.rowInflationAction = rowInflationAction;
    this.headerLayoutId = headerLayoutId;
    this.headerInflationAction = headerInflationAction;
    this.isHeaderClickable=isHeaderClickable;
    hasSections=true;
    arrangeData();
  }

  private void arrangeData(){
    dataWithHeaders = new ArrayList<Object>();
    sectionHeaderIndexes = new ArrayList<Integer>();
    int count=-1;
    for(int i=0; i<data.size();i++){
      HeadedList<?, ?> d = (HeadedList<?,?>)data.get(i);
      dataWithHeaders.add(d.getHeader());
      sectionHeaderIndexes.add(++count);
      
      ArrayList<?> x = d.getContents();
      for(int j=0; j<x.size(); j++){
        count++;
        dataWithHeaders.add(x.get(j));
      }
    }
  }
  
  @Override
  public int getCount() {
    if(hasSections)
      return dataWithHeaders.size();
    else
      return data.size();
  }

  @Override
  public Object getItem(int position) {
    if(hasSections)
      return dataWithHeaders.get(position);
    else
      return data.get(position);
  }

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

  @Override
  public int getItemViewType(int position) {
    if(hasSections){
      if(sectionHeaderIndexes.contains(position))
        return 1;
      else
        return 0;
    }
    else
      return 0;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    View res = convertView;
    int layout=rowLayoutId;
    boolean isHeader=false;
    
    if(getItemViewType(position)==1){
      layout=headerLayoutId;
      isHeader=true;
    }
    if (res == null){
          res = inflater.inflate(layout, null);
    }
    if(refreshActions!=null){
      for(int i=0;i<refreshPositions.length;i++){
        if(position==refreshPositions[i]){
          res=refreshActions[i].execute(refreshData[i], res);
        }else{
          if(initialSelection == position){
            res=initAction.execute(getItem(position), res);
          }else{
            if(!isHeader)
              res=rowInflationAction.execute(getItem(position), res);
            else
              res=headerInflationAction.execute(getItem(position), res);
          }
        }
      }
      if(position==getCount()-1){
        refreshData = null;
        refreshPositions = null;
        refreshActions = null;
      }
    }else{
      if(!isHeader)
        res=rowInflationAction.execute(getItem(position), res);
      else
        res=headerInflationAction.execute(getItem(position), res);
    }
        return res;
  }

  @Override
  public int getViewTypeCount() {
    if(hasSections)
      return 2;
    else
      return 1;
  }

  @Override
  public boolean hasStableIds() {
    return true;
  }

  @Override
  public boolean isEmpty() {
    return getCount()<1;
  }

  @Override
  public void registerDataSetObserver(DataSetObserver observer) {}

  @Override
  public void unregisterDataSetObserver(DataSetObserver observer) {}

  @Override
  public boolean areAllItemsEnabled() {
    return false;
  }

  @Override
  public boolean isEnabled(int position) {
    if(getItemViewType(position)==0)
      return true;
    else
      return isHeaderClickable;
  }
  
  public void refreshListItems(AdapterCommand[] actions, Object[] data, int[] positions,
      int initialSelection, AdapterCommand initAction){
    this.refreshActions = actions;
    this.refreshPositions = positions;
    this.refreshData  = data;
    this.initialSelection = initialSelection;
    this.initAction = initAction;
    notifyDataSetChanged();
  }
}

Java Source Code List

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