Android Open Source - 301Assignment1 Task Array Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.ckchan.assignment1.adapter;
/*from w  w w .  j av a2 s . c om*/
import java.util.ArrayList;
import java.util.List;

import org.json.JSONException;

import com.ckchan.assignment1.ckchan_notes.R;
import com.ckchan.assignment1.ckchan_todolist.TaskDatabase;
import com.ckchan.assignment1.ckchan_todolist.TodoTask;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.TextView;

//This code is from:
//http://stackoverflow.com/questions/9990676/how-can-i-get-values-from-checkbox-in-android 2014-09-23
public class TaskArrayAdapter extends ArrayAdapter<TodoTask> {

  private LayoutInflater inflater;
  private List<TodoTask> taskArray;
  private TaskDatabase taskDatabase;
  private Context context;
  private String type;

  public TaskArrayAdapter(Context context, List<TodoTask> taskArray) {

    super(context, R.layout.task_textview, taskArray);
    inflater = LayoutInflater.from(context);
    
    this.taskArray = taskArray;
    this.taskDatabase = new TaskDatabase();
    this.context = context;
  }

  public static class ViewHolder {

    private CheckBox checkBox;
    private TextView textView;

    public ViewHolder(TextView textView, CheckBox checkBox) {
      
      this.checkBox = checkBox;
      this.textView = textView;
    }

    public CheckBox getCheckBox() {
      
      return checkBox;
    }

    public void setCheckBox(CheckBox checkBox) {
      
      this.checkBox = checkBox;
    }

    public TextView getTextView() {
      
      return textView;
    }

    public void setTextView(TextView textView) {
      
      this.textView = textView;
    }
  }

  public View getView(int position, View convertView, ViewGroup parent) {

    TodoTask todoTask = (TodoTask) this.getItem(position);
    TextView textView;
    CheckBox checkBox;

    if (convertView == null) {

      convertView = inflater.inflate(R.layout.task_textview, null);

      textView = (TextView) convertView.findViewById(R.id.textView);
      checkBox = (CheckBox) convertView.findViewById(R.id.checkBox);
      
      convertView.setTag(new ViewHolder(textView, checkBox));

      checkBox.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
          
          //When a check box is clicked, a new task is created and initialized to the set state
          //Then it replaces the task with the same id in the array
          CheckBox checkBox2 = (CheckBox) v;
          TodoTask task = (TodoTask) checkBox2.getTag();
          task.setChecked(checkBox2.isChecked());
          
          try {
            
            if (taskArray.contains(task)) {
              
              taskArray.set(taskArray.indexOf(task), task);
            }
            if (type == "task") {
              
              taskDatabase.saveTaskData(context, taskArray);
            }else if (type == "archive") {
              
              taskDatabase.saveArchiveData(context, taskArray);
            }
          } catch (JSONException e) {
            
            // TODO Auto-generated catch block
            e.printStackTrace();
          }
        }
      });
    } else {

      ViewHolder viewHolder = (ViewHolder) convertView.getTag();
      checkBox = viewHolder.getCheckBox();
      textView = viewHolder.getTextView();
    }

    textView.setText(todoTask.getTaskDescription());
    checkBox.setTag(todoTask);
    checkBox.setChecked(todoTask.isChecked());
    checkBox.setText("");

    return convertView;
  }

  public List<TodoTask> getTaskArray() {
    return this.taskArray;
  }
  
  public void setTaskArray(ArrayList<TodoTask> taskArray) {
    this.taskArray = taskArray;
  }
  
  public void setArrayType(String type) {
    this.type = type;
  }
  
  public String getArrayType() {
    return type;
  }
}

Java Source Code List

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