RxJava- loop through async tasks and wait for complete

Question

I'm attempting to do some async work on n items, and wait for all items to complete before proceeding.

What do I put in the whatfunc? location to have subscribe's onComplete fire once?

Observable.range(0, n)
    .<whatfunc?>({ s ->  doAsyncWorkThatReturnsObservable(s) })
    .(other?)
    .subscribe({println "All complete"})

Thanks

fionbio · Accepted Answer · 2014-04-13 23:21:38Z

1

flatMap

Be sure to provide closures to the correct arguments in subscribe. Example from link adjusted to fit your provided example:

Observable.range(0, n)
    .flatMap({n -> doAsyncWorkThatReturnsObservable(n)})
    .subscribe(
       { println(it); },                          // onNext
       { println("Error: " + it.getMessage()); }, // onError
       { println("Sequence complete"); }          // onCompleted
    );

answered Apr 13, 2014 at 23:21

fionbio

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