Undo android thread programmatically

I have this thread:

                    t = new Thread() {
                    @Override
                    public void run() {
                        try {
                            while (!isInterrupted()) {
                                Thread.sleep(1);
                                runOnUiThread(new Runnable() {
                                    @Override
                                    public void run() {
                                        TimeCounter++;
                                        textview.setText("Your reaction time:"
                                                + TimeCounter + "MS");
                                    }
                                });
                            }
                        } catch (InterruptedException e) {
                        }
                    }
                };

                t.start();

      

        
        
        
      

    

I want to undo it, I tried t.interrupt();

it but it didn't work, is there any other way?