import android.widget.*;
import android.view.*;
import android.content.Context;
import android.app.Activity;
import java.util.Timer;
import java.util.TimerTask;

public class main {
  static String text = "";
  
  public static View main(final Activity context) {
    ScrollView sv = new ScrollView(context);
    
    final TextView tv = new TextView(context);
    tv.setText("");
    sv.addView(tv);
    
    Timer myTimer = new Timer();
    myTimer.schedule(new TimerTask() {          
      public void run() {
        context.runOnUiThread(new Runnable() {
          public void run() {
            text += "This is more text.\n";
            tv.setText(text);
          }
        });
      }
    }, 0, 1000);
    
    return sv;
  }
}

Began life as a copy of #1000403