Android Open Source - commande-godo Todo Adapter

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License

The source code is released under:

MIT License

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Java Source Code

/*** 
 * Constructor method, objects declaration and getView method structure modified from:
 * Username: doctororeo/*  w ww.  ja v a  2s .  co m*/
 * http://devtut.wordpress.com/2011/06/09/custom-arrayadapter-for-a-listview-android/
 * Sept 13, 2014
 */

package ca.ualberta.commande.android.commande_godo;

import java.util.List;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import ca.ualberta.commande.android.commande_godo.data.TodoItem;

public class TodoAdapter extends ArrayAdapter<TodoItem> {

  private List<TodoItem> objects;
  private Context context;
  
  public TodoAdapter(Context context, int textViewResourceId, List<TodoItem> todos) {
    super(context, textViewResourceId, todos);
    this.objects = todos;
    this.context = context;
  }
  
  @SuppressLint("InflateParams")
  public View getView(int position, View convertView, ViewGroup parent){

    // assign the view we are converting to a local variable
    View v = convertView;

    // first check to see if the view is null. if so, we have to inflate it.
    // to inflate it basically means to render, or show, the view.
    if (v == null) {
      LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      v = inflater.inflate(R.layout.item_todo, null);
    }

    /*
     * Recall that the variable position is sent in as an argument to this method.
     * The variable simply refers to the position of the current object in the list. (The ArrayAdapter
     * iterates through the list we sent it)
     * 
     * Therefore, todo refers to the current Item object.
     */
    TodoItem todo = objects.get(position);

    if (todo != null) {

      // Obtain a reference to the views to manipulate
      CheckedTextView ctv = (CheckedTextView) v;
      
      // check to see if each individual textview is null.
      // if not, set its attributes
      if (ctv != null) {
        ctv.setText(todo.getTitle());
        ctv.setChecked(todo.isCompleted());
        
        if (todo.isCompleted() && !todo.isSelected()) {
          ctv.setTextColor(Color.LTGRAY);
          ctv.setBackgroundColor(Color.WHITE);
          // http://stackoverflow.com/questions/9786544/creating-a-strikethrough-text-in-android, Sept 13, 2014
          ctv.setPaintFlags(ctv.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
        } else if (todo.isCompleted() && todo.isSelected()) {
          ctv.setTextColor(Color.WHITE);
          ctv.setBackgroundColor(context.getResources().getColor(R.color.highlight));
          ctv.setPaintFlags(ctv.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
        } else if (!todo.isCompleted() && todo.isSelected()) {
          ctv.setTextColor(Color.BLACK);
          ctv.setBackgroundColor(context.getResources().getColor(R.color.highlight));
          ctv.setPaintFlags(ctv.getPaintFlags() & (~ Paint.STRIKE_THRU_TEXT_FLAG));
        } else {
          ctv.setTextColor(Color.BLACK);
          ctv.setBackgroundColor(Color.WHITE);
          ctv.setPaintFlags(ctv.getPaintFlags() & (~ Paint.STRIKE_THRU_TEXT_FLAG));
        }    
      }
    }

    // the view must be returned to our activity
    return v;

  }
}

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