Android Open Source - adamsonelearn Subject List Adapter

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Back to project page adamsonelearn.
License

The source code is released under:
MIT License
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Java Source Code

package com.jaselogic.adamsonelearn;
/*from  w w  w  .j  av a2  s  . c om*/
import java.util.ArrayList;

import com.koushikdutta.urlimageviewhelper.UrlImageViewHelper;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

class SubjectListAdapter extends BaseAdapter {
    private ArrayList<SubjectListItem> mListItems;
    private LayoutInflater mLayoutInflater;
 
    public SubjectListAdapter(Context context, ArrayList<SubjectListItem> arrayList){
        mListItems = arrayList;
        //get the layout inflater
        mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }
    
    @Override
    public int getItemViewType(int position) {
      // TODO Auto-generated method stub
      //return mListItems.get(position).viewType;
      return 0;
    }
    
    @Override
    public int getViewTypeCount() {
      return 1;
    }
 
    @Override
    public int getCount() {
        //getCount() represents how many items are in the list
        return mListItems.size();
    }
 
    @Override
    //get the data of an item from a specific position
    //i represents the position of the item in the list
    public Object getItem(int i) {
        return null;
    }
 
    @Override
    //get the position id of the item from the list
    public long getItemId(int i) {
        return 0;
    }
 
    @Override
    public View getView(int position, View view, ViewGroup viewGroup) {
 
        // create a ViewHolder reference
        ViewHolder holder;
        //get the string item from the position "position" from array list to put it on the TextView
        final SubjectListItem listItem = mListItems.get(position);
        
        //check to see if the reused view is null or not, if is not null then reuse it
        if (view == null) {
            holder = new ViewHolder();
            
        view = mLayoutInflater.inflate(R.layout.subjects_list_item, viewGroup, false);
            holder.subjectTextView = (TextView) view.findViewById(R.id.subjects_subjectname);
            holder.teacherTextView = (TextView) view.findViewById(R.id.subjects_teacher);
            holder.scheduleTextView = (TextView) view.findViewById(R.id.subjects_schedule);
            holder.avatarImageView = (ImageView) view.findViewById(R.id.updates_avatar);
            
            // the setTag is used to store the data within this view
            view.setTag(holder);
        } else {
            // the getTag returns the viewHolder object set as a tag to the view
            holder = (ViewHolder)view.getTag();
        }
 
        if (listItem != null) {
          //TODO: might want to check if each is null.

          holder.subjectTextView.setText(listItem.subject);
          holder.teacherTextView.setText(listItem.teacher);
          holder.scheduleTextView.setText(listItem.schedule);

          UrlImageViewHelper.setUrlDrawable(holder.avatarImageView, listItem.avatarSrc);
        }
 
        //this method must return the view corresponding to the data at the specified position.
        return view;
 
    }
    
  //static class view holder to prevent repeated calls to findViewById
  private static class ViewHolder {
    protected TextView teacherTextView;
    protected TextView subjectTextView;
    protected TextView scheduleTextView;
    protected ImageView avatarImageView;
  }
  
  //Drawer list item
  public static class SubjectListItem {
    public String teacher;
    public String subject;
    public String schedule;
    public String avatarSrc;
  }
}
Java Source Code List
