Dynamic text view in Android?

Question

I am new to Android. I need to view one text on the screen. After thread sleep time I need to add another text on the screen. I have to show the text adding but my code display after all the append operation. How to show adding text one by one?

public class dynamictextview extends Activity {
    /** Called when the activity is first created. */
    private TextView tv ;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tv = new TextView(this);
        tv.setText("Dynamic Text View Test\n");
        setContentView(tv);
        for(int i=0;i<10;i++)
        {
            tv.setDrawingCacheBackgroundColor(MODE_APPEND);
            tv.append("\nAttempt "+i);
            try {
                Thread.sleep(500);
            }
            catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

Answer 1

Hi,

First of all, you must not call Thread.sleep() from the UI thread.

Then to have the text appending behave as expected, you must first return from your onCreate() method before modifying the TextView's content.