Pause the timer and then continue it

Refer to the code that @Yuri posted from here. How to stop a timer after certain number of times . If I wanted to stop it because of some condition and then restart it again. How would I go about doing it? ``` private final static int DELAY = 10000; private final Handler handler = new Handler(); private final Timer timer = new Timer(); private final TimerTask task = new TimerTask() { private int counter = 0; public void run() { handler.post(new Runnable() { public void run() { Toast.makeText(MainActivity.this, "test", Toast.LENGTH_SHORT).show(); } }); if(++counter == 4) { timer.cancel(); } //do some stuff in my app //restart the timer again } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); timer.schedule(task, DELAY, DELAY); } ``` Here's what I've tried , but it keeps crashing on me. ``` final int DELAY = 10000; Timer timer; MyTask task; startManager Scanner; Handler handler; public class MyTask extends TimerTask { @Override public void run() { handler.post(new Runnable() { public void run() { //do Stuff here } }); } public class startManager { public startManager() { handler = new Handler(); timer = new Timer(); } public void start() { timer.schedule(task, 0, DELAY); } public void cancel() { timer.cancel(); timer.purge(); } } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Scanner = new startManager(); //do some stuff if (...) Scanner.cancel() //restart the timer and its task Scanner=new startManager(); } ```