How to check if RXJava finish or empty from queue

Question

I have a function that loop the request using Retrofit and RXJava as below

for (i in month..12) {
    if (Conn.connection(applicationContext)) {
        Api.create().getDateInMonth("2019-$i-01")
            .subscribeOn(Schedulers.io())
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(object : Observer<DateDataResponse> {
                override fun onSubscribe(d: Disposable) {}

                @SuppressLint("NewApi")
                override fun onNext(dateDataResponse: DateDataResponse) {
                    Log.d("OnSuccess", "success")
                }
                @SuppressLint("NewApi")
                override fun onError(e: Throwable) {
                    Log.d("onError", "error" + e.message)
                }

                override fun onComplete() {
                    Log.d("onComplete", "onComplete")
                }
            })
    } else
        Log.d("onError", "No Internet Connection")
    }
}

so if some request error or success it will go on until the 12 request is finish. I want to detect if I already got all response from my request

you can check in onComplete if i equals to 12 then it is last api call and check after that all response is empty or not. — Nidhi Desai, Jul 29 '19 at 07:00
https://stackoverflow.com/questions/30219877/rxjava-android-how-to-use-the-zip-operator — a_local_nobody, Jul 29 '19 at 07:02
@NidhiDesai thank for that, I've already done that but I don't think if that's a good way to handle this situation. — Anonymous-E, Jul 29 '19 at 07:23
@a_local_nobody thank for bringing the zip the observer but I don't think that I've to do that with this simple request — Anonymous-E, Jul 29 '19 at 07:24
are you maintaining list to collect response for all the months? — Nidhi Desai, Jul 29 '19 at 07:26
yes. If the response is success, I appended it to an array of that model — Anonymous-E, Jul 29 '19 at 07:28

score 3 · Accepted Answer · answered Jul 29 '19 at 07:19

3

If you turn this into a single chain, then you can use the onComplete() callback to verify that all your requests have finished. For example:

Observable.range(0, 12)
    .filter { i-> Conn.connection(applicationContext) }
    .flatMap { i -> Api.create().getDateInMonth("2019-$i-01") } 
    .subscribeOn(io())
    .observeOn(mainThread())
    .subscribe({ i-> }, { t-> }, {/*onComplete*/ })

answered Jul 29 '19 at 07:19

PPartisan

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thank you. this seems like a proper way to handle the request, I'll try it then I'll let you know – Anonymous-E Jul 29 '19 at 07:25

How to check if RXJava finish or empty from queue

1 Answers1