my task

main activity
================
package com.example.zeevmindali.mytaskmanager;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    Context context;
    EditText userName;
    EditText userPass;
    SharedPreferences myPref ;
    SharedPreferences.Editor editor;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        userName=(EditText)findViewById(R.id.userName);
        userPass=(EditText)findViewById(R.id.userPassword);


        myPref = getSharedPreferences("userPref", MODE_PRIVATE);
        editor = myPref.edit();

        final String getUserName = checkIfLogged();
        if (!getUserName.equals("na"))
        {
            startTaskActivity(getUserName);
        }
    }

    public void btnLogin(View v)
    {
        if (checkUser())
        {
            updateLogged();
            userName.requestFocus();
            startTaskActivity(userName.getText().toString());
            userName.setText("");
            userPass.setText("");
            userName.requestFocus();

        }
        else
        {
            Toast.makeText(this, "Error in user name or password", Toast.LENGTH_SHORT).show();
        }
    }

    public void btnRegister(View v)
    {
        Intent registerIntent = new Intent(this,Register.class);
        startActivity(registerIntent);
    }


    private String checkIfLogged()
    {

        return myPref.getString("logged","na");
    }

    private void updateLogged()
    {
        //move user to loged mode
        editor.putString("logged", userName.getText().toString());
        editor.commit();
    }

    private void startTaskActivity(String loggedUserName)
    {
        //move to task activity
        Intent taskIntent = new Intent(this,TaskList.class);
        taskIntent.putExtra("logged",loggedUserName);
        startActivity(taskIntent);

    }

    private boolean checkUser()
    {
            if (userName.getText().toString().isEmpty() || userPass.getText().toString().isEmpty()) return false;
            return myPref.getString(userName.getText().toString(),"na").equals(userPass.getText().toString());
    }
}


register
=============
package com.example.zeevmindali.mytaskmanager;

import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class Register extends AppCompatActivity {

    EditText userName;
    EditText userPass;
    EditText userPassCheck;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        userName=(EditText)findViewById(R.id.regUserName);
        userPass=(EditText)findViewById(R.id.regUserPass);
        userPassCheck=(EditText)findViewById(R.id.regUserPassCheck);
    }

    public void btnCancel(View v)
    {
        finish();
    }

    public void btnRegister(View v)
    {
        if (checkUser())
        {
            finish();
        }
    }

    private boolean checkUser()
    {
        if (userName.getText().toString().isEmpty() || userPass.getText().toString().isEmpty())
        {
            Toast.makeText(Register.this, "Fill all fields", Toast.LENGTH_SHORT).show();
            return false;
        }

        if (!userPass.getText().toString().equals(userPassCheck.getText().toString()))
        {
            Toast.makeText(Register.this, "Password not match", Toast.LENGTH_SHORT).show();
            return false;
        }

        SharedPreferences myPref = getSharedPreferences("userPref",MODE_PRIVATE);
        if (myPref.contains(userName.getText().toString()))
        {
            Toast.makeText(Register.this, "User already exists", Toast.LENGTH_SHORT).show();
            return false;
        }

        SharedPreferences.Editor editor = myPref.edit();
        editor.putString(userName.getText().toString(),userPass.getText().toString());
        editor.commit();
        return true;
    }
}


task adapter
============
package com.example.zeevmindali.mytaskmanager;

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.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by zeevmindali on 24/03/16.
 */
public class taskAdapter extends BaseAdapter
{
    Context context;
    String userName;
    List<utlShared> taskList;

    public taskAdapter(Context context,List<utlShared> myTaskList)
    {
        this.context=context;
        taskList= myTaskList;
    }

    @Override
    public int getCount()
    {
        return taskList.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)
    {

        final TextView singleTask = new TextView(context);
        singleTask.setText(taskList.get(position).taskName);
        singleTask.setTextColor(taskList.get(position).taskDone ? Color.GREEN : Color.RED);
        singleTask.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder builder = new AlertDialog.Builder(context);
                builder.setTitle("Change Status of? "+taskList.get(position).taskName);
                builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        utlShared myPref = new utlShared(context, userName);
                        final boolean changeStatus = !Boolean.parseBoolean(String.valueOf(taskList.get(position).taskDone));
                        myPref.doneTask(taskList.get(position).taskName, changeStatus);
                        taskList.get(position).taskDone=changeStatus;
                        singleTask.setTextColor(changeStatus? Color.GREEN : Color.RED);
                    }
                });
                builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                    }
                });
                builder.show();
            }
        });
            return singleTask;
        }
}


task list
=================
package com.example.zeevmindali.mytaskmanager;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.InputType;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class TaskList extends AppCompatActivity {

    ListView myList;
    String myTask="";
    ArrayList<utlShared> myTaskList;
    utlShared myUtlShared;
    taskAdapter myAdapter;
    Context context;
    @Override

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_task_list);
        myList=(ListView)findViewById(R.id.taskList);
        context=this;
        final String userName=getIntent().getStringExtra("logged");
        myUtlShared = new utlShared(this,userName);
        myTaskList = myUtlShared.getAllTasks();
        if (myTaskList!=null)
        {
            taskAdapter adapter = new taskAdapter(this, myTaskList);

            myList.setAdapter(adapter);
        }
    }

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        switch (item.getItemId())
        {
            case R.id.logOut:
                SharedPreferences myPref = getSharedPreferences("userPref",MODE_PRIVATE);
                SharedPreferences.Editor editor = myPref.edit();
                editor.remove("logged");
                editor.commit();
                finish();
                break;

            case R.id.addTask:
                dlgAddTask();
                break;
        }
        return super.onOptionsItemSelected(item);
    }

    private String dlgAddTask()
    {
        //create builder
        AlertDialog.Builder builder=new AlertDialog.Builder(this);
        //set title
        builder.setTitle("Input 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) {
                myTask = input.getText().toString();
                myUtlShared.newTask(myTask);
                //myTaskList.add(new utlShared(myTask, false));
                taskAdapter adapter = new taskAdapter(context,myTaskList);
                myList.setAdapter(adapter);
            }
        });
        //negative feed back
        builder.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        builder.show();
        return myTask;
    }
}


utlShared
=================
package com.example.zeevmindali.mytaskmanager;

import android.content.Context;
import android.content.SharedPreferences;
import android.util.Log;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Created by zeevmindali on 24/03/16.
 */
public class utlShared
{
    private Context context;
    private SharedPreferences userPref;
    private SharedPreferences.Editor editor;
    public String taskName;
    public Boolean taskDone;
    private String userName;
    private ArrayList<utlShared> myTasks;

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

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

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

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

    public void doneTask(String taskName, boolean taskDone)
    {

        //CHANGE TASK IN SHARED PREFERANCES
        editor.putBoolean(taskName, taskDone);
        //REMOVE TASK FROM LIST
        myTasks.remove(taskName);
        //ADD TASK WITH NEW TASK DONE INTO LIST
        myTasks.add(new utlShared(taskName, taskDone));
    }

    public void getTasks()
    {
        //GET ALL TASK FROM SHARED PREFERANCES
        Map<String,?> userTasks= userPref.getAll();
        for(Map.Entry<String,?> singleTask:userTasks.entrySet())
        {
            if (!singleTask.getKey().isEmpty())
            //using parse to store boolean
            //Boolean.parseBoolean((String) singleTask.getValue())
            myTasks.add(new utlShared(singleTask.getKey(),Boolean.parseBoolean((String) singleTask.getValue())));
        }
    }

    public ArrayList<utlShared> getAllTasks()
    {
        return myTasks;
    }
}