Menu (XMl) + AlertDialog

import android.app.AlertDialog;
import android.content.DialogInterface;
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.Toast;

public class MainActivity extends AppCompatActivity {

    String myText="";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @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.AddTask:
                dlgAddTask();
                Toast.makeText(this, myText, Toast.LENGTH_SHORT).show();
                //insert code here
                break;
            case R.id.Logout:
                Toast.makeText(this, "LOGOUT", Toast.LENGTH_SHORT).show();
                //insert code here
                break;
        }
        return super.onOptionsItemSelected(item);
    }

    private void 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) {
                myText = input.getText().toString();
                Toast.makeText(MainActivity.this, "HELLO "+myText+" THE KING!!", Toast.LENGTH_SHORT).show();
            }
        });
        //negative feed back
        builder.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //Toast.makeText(context, "YOU ARE NOT SO SMART, HUH?", Toast.LENGTH_SHORT).show();
                dialog.cancel();
            }
        });
        builder.show();
    }

}



menu.xml
===============
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/AddTask"
        android:title="Add Task"/>
    <item
        android:id="@+id/Logout"
        android:title="Log Out"/>
</menu>