Android Studio – When I run my app for the first time, don't you think runTimer() method will run infinitely and so the onStart() method will never get called?

My OnStart() method should not get called because my onCreate() method will run infinitely. When OnCreate method runs, the runTimer() method gets called. This runTimer method will run infinitely because of handler.postDelayed. How is it that Android Studio is able to finish the infinite loop of the runTimer() method and then call OnStart() method?

    // MY STOPWATCH APP        
    


    public class MainActivity extends AppCompatActivity {
    private int seconds = 0;
    private boolean running;
    private boolean wasRunning;

    @Override
    // ON RUNNING MY APP FOR THE FIRST TIME THIS METHOD WILL GET CALLED FIRST.
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if (savedInstanceState != null) {
            seconds = savedInstanceState.getInt("seconds");
            running = savedInstanceState.getBoolean("running");
            wasRunning = savedInstanceState.getBoolean("wasRunning");
        }
        
        runTimer();
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
        super.onSaveInstanceState(savedInstanceState);
        savedInstanceState.putInt("seconds", seconds);
        savedInstanceState.putBoolean("running", running);
        savedInstanceState.putBoolean("wasRunning", wasRunning);
    }

    @Override
    protected void onStop() {
        super.onStop();
        wasRunning = running;
        running = false;
    }

    @Override
    protected void onStart() {
        super.onStart();
        if (wasRunning) {
            running = true;
        }
    }

    //Start the stopwatch running when the Start button is clicked.
    public void onClickStart(View view) {
        running = true;
    }

    //Stop the stopwatch running when the Stop button is clicked.
    public void onClickStop(View view) {
        running = false;
    }

    //Reset the stopwatch when the Reset button is clicked.
    public void onClickReset(View view) {
        running = false;
        seconds = 0;
    }

    //Sets the number of seconds on the timer.
    private void runTimer() {
        final TextView timeView = (TextView)findViewById(R.id.tv_time_view);
        final Handler handler = new Handler();
        handler.post(new Runnable() {
            @Override
            public void run() {
                int hours = seconds/3600;
                int minutes = (seconds%3600)/60;
                int secs = seconds%60;
                String time = String.format(Locale.getDefault(),
                        "%d:%02d:%02d", hours, minutes, secs);
                timeView.setText(time);
                if (running) {
                    seconds++;
                }
                handler.postDelayed(this, 1000);
            }
        });
    }
}