Question

我遇到了一个小问题，我正在使用RxJava从服务器检索数据，然后用本地检查那些数据，问题我开始在本地检查文件并存储数据，然后我启动observable我得到在数据完全下载之前的SUCCESS然后我在成功后收到“initRemoteData”结果。

所以我需要做的是当observable给出结果我继续时调用“InitRemoteData”时阻塞observable。

private Observable<CheckStatus> getCheckObservable() {
    return Observable.defer(() -> {
        DataDTO dto;
        try {
            dto = Utils.decryptData(
                localfile.getNonce(),
                localfile.getEncryptedData(),
                password);
        } catch (WrongPasswordException e) {
            return Observable.just(CheckStatus.WRONG_PASSWORD);
        }
        try {
            storeDataPrefs(dto);
        } catch (RuntimeException e) {
            return Observable.just(CheckStatus.OTHER_ERROR);
        }
        storeDatabase(dto);

        initRemoteData();//<-Here i did call for another observable but the observable keep going without waiting it to finish.



        return Observable.just(CheckStatus.SUCCESS);
    });
}

可观察的电话：

getCheckObservable()
        .subscribeOn(BackgroundSchedulers.getMultiThreadInstance())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(Subscribers.create(checkResult -> replaceFragment(
            CheckAccountCompleteFragment
                .newInstance(checkResult),
            AddToBackStack.FALSE)));

更新： initRemoteData代码：

Observable.zip(getObservable1()),//remote Data
            getObservable2(), // local Data
            (observableResult1,observableResult2)->{
                doSomethingWith(observableResult1,observableResult2); // compare between data
                return null;
            }).subscribeOn(BackgroundSchedulers.getMultiThreadInstance())
            .observeOn(AndroidSchedulers.mainThread())
            .doOnCompleted(() -> {
                    doSomething2(); // update fields
                }
            })
            .subscribe();

Answer 1

如果我弄错了你需要让Observable.combineLatest()等待两个结果？如果是：return可以帮助您。

更新：好的，那么为什么不只是Observable.zip(getObservable1()),//remote Data getObservable2(), // local Data (observableResult1,observableResult2)->{ doSomethingWith(observableResult1,observableResult2); // compare between data return CheckStatus.SUCCESS; // <-- CHANGES }).subscribeOn(BackgroundSchedulers.getMultiThreadInstance()) .observeOn(AndroidSchedulers.mainThread()) .doOnCompleted(() -> { doSomething2(); // update fields } });这个“等待”可观察的“大”观察者像这样：

private Observable<CheckStatus> getCheckObservable() {
return Observable.defer(() -> {
    DataDTO dto;
    try {
        dto = Utils.decryptData(
            localfile.getNonce(),
            localfile.getEncryptedData(),
            password);
    } catch (WrongPasswordException e) {
        return Observable.just(CheckStatus.WRONG_PASSWORD);
    }
    try {
        storeDataPrefs(dto);
    } catch (RuntimeException e) {
        return Observable.just(CheckStatus.OTHER_ERROR);
    }
    storeDatabase(dto);

    return initRemoteData();       // <-- CHANGES
});
}

并且

def asterisk():
    ast = "*"
    i = 1
    lines = int(input("How many asterisks do you want? "))
    space = " "
    for i in range(0, lines+1):
        print (lines * space, ast*i)
        lines -= 1
        i += 1

Async Observable中的异步Observable

1 个答案: