My task with utl / Oorya

//=========================ENTRY CLASS
import android.support.v7.app.AppCompatActivity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.text.InputType;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;

public class Entry extends AppCompatActivity{

    private TextView txt;
    protected static ListView myList;
    private String myText;
    private Context context = this;
    private String myUser ;
    private TaskAdapter myTask ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.entry);
        txt=(TextView)findViewById(R.id.text);
        myList=(ListView)findViewById(R.id.myListV);
        myUser = getIntent().getStringExtra("putUser");
        txt.setText("Hello " + myUser);

        refresh();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu m)
    {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.menu_entry, m);
        return super.onCreateOptionsMenu(m);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        switch (item.getItemId())
        {
            case R.id.addTask:
                btnAddTask();
                break;
            case R.id.logout:
                btnLogout();
                break;
        }
        return super.onOptionsItemSelected(item);
    }

    public void refresh()
    {
        myTask=new TaskAdapter(context,myUser);
        myList.setAdapter(myTask);
    }

    public void btnAddTask()
    {
        //create builder
        AlertDialog.Builder builder=new AlertDialog.Builder(this);
        //set title
        builder.setTitle("Enter new task");

        //set up the input
        final EditText input = new EditText(this);
        //specify the type of input expected
        input.setInputType(InputType.TYPE_CLASS_TEXT);
        //add EditText view to the Dialog
        builder.setView(input);
        // positive feed back
        builder.setPositiveButton("ADD TASK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                myText = input.getText().toString();

                UtlShared myPref = new UtlShared(context, myUser);
                myPref.newTask(myText);

                refresh();
            }
        });
        //negative feed back
        builder.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        builder.setIcon(android.R.drawable.ic_dialog_info);
        builder.show();
    }


    public void btnLogout()
    {
        //declaration of shared preferences
        SharedPreferences pref=getApplicationContext().getSharedPreferences("myPref",MODE_PRIVATE);
        //declaration of editor
        SharedPreferences.Editor editor=pref.edit();
        //remove key user and pass
        editor.remove("userLogged").commit();
        //start another window - main window
        Intent iMain = new Intent(this,MainActivity.class);
        this.startActivity(iMain);
        finish();
    }
}

//===================================UTL SHARED CLASS
import android.content.Context;
import android.content.SharedPreferences;
import java.util.ArrayList;
import java.util.Map;

public class UtlShared
{
    private Context context;
    private  SharedPreferences userPref;
    private  SharedPreferences.Editor editor;
    public String taskName;
    public Boolean taskDone;
    private String userName;
    private TaskAdapter myTask ;

    private  ArrayList<UtlShared> taskList ;

    //constructor for adding name to list
    public UtlShared(String taskName, Boolean taskDone)
    {
        this.taskName=taskName;
        this.taskDone=taskDone;
    }


    //constructor for new UtlShared instance
    public UtlShared(Context context, String userName)
    {
        //get context
        this.context = context;
        //get username for shared preferences file
        this.userName=userName;
        userPref=context.getSharedPreferences(userName, Context.MODE_PRIVATE);
        editor = userPref.edit();
        //create new list
        taskList = new ArrayList<UtlShared>();
        //get all tasks to list
        getTasks();
    }

    public void newTask(String taskName)
    {
        //PUT NEW TASK INTO SHARED PREFERENCES
        editor.putString(taskName, "0");
        editor.commit();
        //PUT TASK INTO LIST
        taskList.add(new UtlShared(taskName, false));
    }

    public void removeTask(String taskName)
    {
        //REMOVE TASK FROM SHARED PREFERENCES
        editor.remove(taskName);
        editor.commit();
        //REMOVE TASK FROM LIST
        taskList.remove(taskName);
        refresh();
    }

    public void doneTask(String taskName, boolean taskDone)
    {
        //CHANGE TASK IN SHARED PREFERENCES
        editor.putString(taskName, taskDone ? "1" : "0");
        editor.commit();

        //REMOVE TASK FROM LIST
        taskList.remove(taskName);
        //ADD TASK WITH NEW TASK DONE INTO LIST
        taskList.add(new UtlShared(taskName, taskDone));
        refresh();
    }

    public void getTasks()
    {
        //GET ALL TASK FROM SHARED PREFERENCES
        Map<String,?> tasks= userPref.getAll();
        for(Map.Entry<String,?> singleTask:tasks.entrySet())
        {
            //INSERT TASK INTO LIST
            taskList.add(new UtlShared(singleTask.getKey(), singleTask.getValue().equals("1")));
        }
    }

    public  ArrayList<UtlShared> getAllTasks()
    {
        //GETTER RETURN TASK LIST
        return taskList;
    }

    public void refresh()
    {
        myTask=new TaskAdapter(context,userName);
        Entry.myList.setAdapter(myTask);
    }
}

//===============================TASK ADAPTER CLASS

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;


public class TaskAdapter extends BaseAdapter
{
    //SET CONTEXT
    Context context;
    String userName;
    ArrayList<UtlShared> userTasks;

    public TaskAdapter(Context context,String userName)
    {
        this.context=context;
        this.userName=userName;
        //CREATE UtlShared instance
        UtlShared myPref = new UtlShared(context,userName);
        //get all task into instance
        userTasks = myPref.getAllTasks();
    }

    @Override
    public int getCount() {
        //RETURN SIZE OF ALL TASKS
        return userTasks.size();
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

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

        LinearLayout myLayout = new LinearLayout(context);
        myLayout.setOrientation(LinearLayout.HORIZONTAL);

        ImageButton delete=new ImageButton(context);
        delete.setBackgroundResource(R.drawable.trash);
        //CREATE NEW TEXT VIEW
        final TextView taskName = new TextView(context);
        //PUT TASK NAME INTO TEXT VIEW
        taskName.setText(userTasks.get(position).taskName);
        taskName.setTextSize(30);
        //SET COLOR OF TASK
        myLayout.setBackgroundColor(userTasks.get(position).taskDone.equals(true) ? Color.GREEN : Color.RED);

        //Change color
        myLayout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder builder=new AlertDialog.Builder(context);
                builder.setTitle(userTasks.get(position).taskDone.equals(true) ? "Are you sure the task not completed?" : "Are you sure task completed?");

                builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        UtlShared myPref = new UtlShared(context, userName);
                        myPref.doneTask(userTasks.get(position).taskName, userTasks.get(position).taskDone.equals(true) ? false : true);
                    }
                });
                builder.setIcon(android.R.drawable.ic_menu_help);
                builder.show();
            }
        });

        delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder builder=new AlertDialog.Builder(context);
                builder.setTitle("Are you sure to delete task?");
                builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        UtlShared myPref = new UtlShared(context, userName);
                        myPref.removeTask(userTasks.get(position).taskName);
                    }
                });
                builder.setIcon(android.R.drawable.ic_delete);
                builder.show();
            }
        });
        //RETURN TEXT VIEW
        myLayout.addView(delete);
        myLayout.addView(taskName);
        return myLayout;

    }
}