Hide TextView after some time in Android

try this...

public class MainActivity extends Activity   {


@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final TextView tv=(TextView)findViewById(R.id.tv);
    tv.setText("+0");
    tv.postDelayed(new Runnable() {
        public void run() {
            tv.setVisibility(View.INVISIBLE);
        }
    }, 3000);
}
 }

What you are trying to do is ok but after three seconds you want to hide the textview so use setVisibility

tvRQPoint.setText("+0");
    tvRQPoint.postDelayed(new Runnable() {
        public void run() {
            tvRQPoint.setVisibility(View.INVISIBLE);
        }
    }, 3000);

try View INVISIBLE or GONE like:

tvRQPoint.postDelayed(new Runnable() {
public void run() {
    tvRQPoint.setVisibility(View.INVISIBLE);
}
}, 3000);

Set View visibility with view.setVisibility(View.INVISIBLE|View.VISIBLE|View.GONE);

How about hiding your text view with some animation?

  int delayMillis = 3000;
  Handler handler = new Handler();
  final View v = tvRQPoint; // your view
  handler.postDelayed(new Runnable() { 
    @Override
    public void run() {
       TranslateAnimation animate = new TranslateAnimation(0,-view.getWidth(),0,0);
       animate.setDuration(500);
       animate.setFillAfter(true);
       v.startAnimation(animate);
       v.setVisibility(View.GONE);

    }, delayMillis);