Android updates ui example using handler ui thread and child thread communication

package com.;

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/**
* You can get the data of the View class in other threads, but you cannot modify or set the data of the View class.
 *
 */
public class Main extends Activity {

    TextView result = null;
    EditText get = null;
    Button update = null;
    Handler handler;

    public void onCreate(Bundle bundle) {
        (bundle);
        setContentView();
        result = (TextView) findViewById();
        update = (Button) findViewById();
        get = (EditText) findViewById();

        handler = new Handler() {
            public void handleMessage(Message msg) {
                if ( == 1) {
                    ("after update ui "
                            + ().getString("data")
                            + "  \nman thread : "
                            + ().getName());
                }
            }
        };

        ("before update ui  main thread : "
                + ().toString());

        (new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                new MyThread("my thread").start();
            }
        });

    }

    class MyThread extends Thread {
        public MyThread(String name) {
            super(name);
        }

        @Override
        public void run() {
// Send messages without data
            // (1);

// Send a message with attached data
            Message msg = new Message();
            Bundle data = new Bundle();
            ("data", ().toString() + " my thread:  "
                    + ().getName());
            (data);
            = 1;
            (msg);
        }
    }
}