toList() does not work

I have one Observable below .

ComApi.getInstance().getRegionList().compose(RxUtil.background())
                .filter(resRegionModel -> resRegionModel != null)
                .map(ResRegionsModel::getData)
                .flatMap(Observable::from)
                .filter(dataEntity -> dataEntity != null)
                .map(this::convert)
                .doOnNext(adapter::replaceWith)  // this can work, it will receive data one by one.
                .toList()
                .doOnNext(adapter::replaceWith) // but this callback will not be called .while after toList()..it can 
                                                                      // not receive data by once. 
                .doOnError(Throwable::printStackTrace)
                .subscribe();

this is my first catch problem while I using toList(). I don’t know how to fix this issue.

[sharyuke]

Did You meaning I must call subscriber.onComplete() method? let me have a try.

[sharyuke]

@akarnokd yes! You are right! it worked!!! thanks a lot !!!