Multiple background threads in Android app

So I ran into an ussie with creating background threads in an android application and found that it's not actualy as difficult to fix as I thought it was, take a look at the code below to see how to do it yourself.

package lukealderton.threadexample;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity
{
    // The threads we're going to use
    private Thread backgroundProcess1;
    private Thread backgroundProcess2;
    
    // Set up vars here that are going to be used within the threads because it
    // Will cause an inner class exception
    private String myString = "";

    // The onCreate method is called when the app starts
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        // Set up the app
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // Set up backgroundProcess1 and put the code we need inside it
        backgroundProcess1 = new Thread(new Runnable()
        {
            public void run()
            {
                // Put code you want here
                
                // set a value of myString
                myString = "value";
            }
        });

        // Set up backgroundProcess2 and put the code we need inside it
        backgroundProcess2 = new Thread(new Runnable()
        {
            public void run()
            {
                // put code you want here
                
                // myString can also be called from here
                myString += " with added new value";
            }
        });
        
        myMethod();
    }
    
    public void myMethod()
    {
        // Put your main code in any function you like but you can now start your 
        // thread by using the below line of code
        backgroundProcess1.start();
        
        // Or this to start the other thread
        backgroundProcess2.start();
    }
}

Check here to see how to update the UI from another thread.