rxjava: Can I use retry() but with delay?

Question

I am using rxjava in my Android app to handle network requests asynchronously. Now I would like to retry a failed network request only after a certain time has passed.

Answer 1

instead of using MyRequestObservable.retry I use a wrapper function retryObservable(MyRequestObservable, retrycount, seconds) which return a new Observable that handle the indirection for the delay so I can do

retryObservable(restApi.getObservableStuff(), 3, 30)
    .subscribe(new Action1(){
        @Override
        public void call(BonusIndividualList arg0) 
        {
            //success!
        }
    }, 
    new Action1(){
        @Override
        public void call(Throwable arg0) { 
           // failed after the 3 retries !
        }}); 


// wrapper code
private static  Observable retryObservable(
        final Observable requestObservable, final int nbRetry,
        final long seconds) {

    return Observable.create(new Observable.OnSubscribe() {

        @Override
        public void call(final Subscriber subscriber) {
            requestObservable.subscribe(new Action1() {

                @Override
                public void call(T arg0) {
                    subscriber.onNext(arg0);
                    subscriber.onCompleted();
                }
            },

            new Action1() {
                @Override
                public void call(Throwable error) {

                    if (nbRetry > 0) {
                        Observable.just(requestObservable)
                                .delay(seconds, TimeUnit.SECONDS)
                                .observeOn(mainThread())
                                .subscribe(new Action1>(){
                                    @Override
                                    public void call(Observable observable){
                                        retryObservable(observable,
                                                nbRetry - 1, seconds)
                                                .subscribe(subscriber);
                                    }
                                });
                    } else {
                        // still fail after retries
                        subscriber.onError(error);
                    }

                }
            });

        }

    });

}