print a random number every second

package com.example.raj.testview;

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.ThemedSpinnerAdapter;

import java.util.Random;
import java.util.TimerTask;



public class MainActivity extends AppCompatActivity {
    TextView tv;
    Handler handler;
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
         tv=(TextView)findViewById(R.id.tv);
        Thread th=new Thread(new MyThread());
        th.start();
        handler=new Handler(){
            @Override            public void handleMessage(Message msg) {
                //super.handleMessage(msg);                int k=msg.arg1;
                tv.setText(Integer.toString(k));
            }
        };


    }

    class MyThread implements Runnable{


        @Override        public void run() {

            for(int i=0;i<100;i++)
            {
                Message message=Message.obtain();
                Random r=new Random();
                int y=r.nextInt();
                message.arg1=y;
                handler.sendMessage(message);
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    @Override    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();

        //noinspection SimplifiableIfStatement        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}