How to use RxJava combineLatest operator with more than 9 observables

Question

I\'m using RxJava and I want to combine 12 different observables using the operator combineLatest.

I saw a function prototype that takes a list of obse

Answer 1

Yo expand on that answer, I am using it to read multiple characteristics at once, it can be done like so:

connectionObservable
                .flatMap((Func1>) rxBleConnection -> {
                    List> list1 = Arrays.asList(
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...),
                            rxBleConnection.readCharacteristic(UUID...));
                    return Observable.combineLatest(list1, args -> {
                       Object o =  doSomethingWithResults(args);
                        return o;
                    });
                })
                .observeOn(AndroidSchedulers.mainThread())
                .doOnUnsubscribe(this::clearConnectionSubscription)
                .subscribe(retVal -> {
                    Log.d(TAG, "result:" + retVal.toString());
                    Log.w(TAG, "SUCCESS");
                    triggerDisconnect();

                }, MyActivity.this::onReadFailure);
    }

Comments if you have suggestions on how to improve this process.