android - 如何在 Kotlin 中将以下 Observable 合并为一个？

Question

我Observable在 Kotlin 中有这两个，其中只是充当计时器，另一个是 HTTP 网络调用响应Observer。

timerDisposable = Observable.timer(daleyABCControlResetSeconds, TimeUnit.SECONDS, AndroidSchedulers.mainThread())
        .doOnNext {
            if (getABCUpdate() != null) {
                Log.d("ABC", "Media status reset after 3 seconds: ")
                updateABCResponse(getABCUpdate())
            }
        }.subscribe()

disposable = audioApi.setABCUpdate(abcUpdate)
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe({
            timerDisposable.dispose()
            updateABCResponse(it)
            Log.d("ABC", "Media Status updated:")
        }, {
            Log.d("ABC", "Error updating Media Status: " + it.message)
            isABCControlChangeRequested = false
        })

我对这种方法不满意，任何人都可以指导我正确的方向来rx充分利用 's 的潜力。提前致谢。

编辑

  Observable.combineLatest(Observable.timer(daleyABCControlResetSeconds, TimeUnit.SECONDS, AndroidSchedulers.mainThread())
            .doOnNext {
                if (getABCUpdate() != null) {
                    Log.d("ABC", "Media status reset after 3 seconds: ")
                    updateABCResponse(getABCUpdate())
                }
            },

            audioApi.setABCUpdate(abcUpdate)
            .subscribeOn(Schedulers.io())
            .observeOn(AndroidSchedulers.mainThread()),
            BiFunction<Long, ABCStatusUpdate, ABCStatusUpdate> { _, abcStatusUpdate ->
                abcStatusUpdate
            })
            .subscribe({
                timerDisposable.dispose()
                updateABCResponse(abcStatusUpdate)
                Log.d("ABC", "Media Status updated:")
            }, {
                Log.d("ABC", "Error updating Media Status: " + abcStatusUpdate.vol)
                isABCControlChangeRequested = false
            })

Answer 1

您可以使用 combinelatest、zip 或 merge 进行组合。我认为在你的情况下 combinelatest 是合适的

Observable.combineLatest(
            Observable.timer(daleyABCControlResetSeconds, TimeUnit.SECONDS, AndroidSchedulers.mainThread())
                .doOnNext {
                    if (getABCUpdate() != null) {
                        Log.d("ABC", "Media status reset after 3 seconds: ")
                        updateABCResponse(getABCUpdate())
                    }
                },
            audioApi.setABCUpdate(abcUpdate)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread()),
            BiFunction<Long, YourApiResponseType, YourApiResponseType> { _, response ->
                response})
        .subscribe({
            timerDisposable.dispose()
            updateABCResponse(it)
            Log.d("ABC", "Media Status updated:")
        }, {
            Log.d("ABC", "Error updating Media Status: " + it.message)
            isABCControlChangeRequested = false
        })

UPD： 您可以像这样更改代码：

Observable.timer(5, TimeUnit.SECONDS, AndroidSchedulers.mainThread()).startWith(-1L)
        .doOnNext {
            if (it == -1L) return@doOnNext
            //your condition
        }