How to pause and start a self playing slideshow

Question

Hello
is there a way to pause and then restart a self plaing slide show in keynote 10. when I hit the space bar it moves to the next slide instead of pausing as I need to create a slide show which basically plays in the background but which needs to be stopped occasinally and then manualy advance to the picture before and then start up again
regards

Answer 1

You're right, thanks for correcting me.
Fixing my implementation:
public class CountingThread extends Thread {
    private JLabel label;
    private int i = 0;
    private volatile boolean stopped = false;
    private volatile boolean resume;
    public CountingThread(JLabel label) {
        this.label = label;
    public void run() {
        while(!stopped) {
            SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    updateLabel();
            try {
                sleep(1000L);
            } catch (InterruptedException expected) {
                if( !stopped ) {
                    synchronized(this) {
                        try {
                            while( !resume )
                                this.wait();
                        } catch( InterruptedException stopping ) {}
    //special methods
    private void updateLabel() {
        label.setText("Number count : " + i++ + " ");
    public void startThread() {
      this.start();
    public void stopThread() {
        stopped = true;
        this.interrupt();
    public void pauseThread() {
        resume = false;
        this.interrupt();
    public void resumeThread() {
        resume = true;
        synchronized(this) {
            this.notify();
}You should disable buttons accordantly to prevent the user from doing wrong actions.
Thanks again BigDaddyLoveHandles, if this was my thread I'd give you the duke stars.
Regards,
Henrique Abreu