Question

我正在使用我的代码中的RxAndroid从object中删除某些list，但是在巨大的list中却出现了以下错误，并且不删除任何{{1 }}：

object

这是我的代码java.lang.NumberFormatException: null：

RxAndroid

并且：

public void updateListBaseSubject(String subject, String idServer) {
    Integer serverId = Integer.parseInt(idServer);
    if (shortTermCoursesModels != null && !shortTermCoursesModels.isEmpty()) {
        mCompositeDisposable.add(observableSubject(subject, serverId, shortTermCoursesModels)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .doOnSubscribe(new Consumer<Disposable>() {
                    @Override
                    public void accept(@NonNull Disposable disposable) throws Exception {
                        listenerCoursesListItemService.adapterShowLayoutTransparent();
                    }
                })
                .doFinally(new Action() {
                    @Override
                    public void run() throws Exception {
                        listenerCoursesListItemService.adapterHideLayoutTransparent();
                    }
                })
                .subscribeWith(new DisposableObserver<String>() {
                    @Override
                    public void onComplete() {
                        notifyDataSetChanged();
                    }

                    @Override
                    public void onError(Throwable e) {
                        Throwable t = new Throwable(e).fillInStackTrace();
                        FirebaseCrash.report(t);
                    }

                    @Override
                    public void onNext(String string) {
                    }
                }));
    }
}

Answer 1

尝试

return Observable.defer(new Callable<ObservableSource<? extends String>>() {

    @Override
    public ObservableSource<? extends String> call() throws Exception {
        if (shortTermCoursesModels != null && !shortTermCoursesModels.isEmpty()) {
            Iterator<GetShortTermCoursesModel> lst = shortTermCoursesModels.iterator();

            while (lst.hasNext()) {
                GetShortTermCoursesModel values = lst.next();

                if (mCompositeDisposable.isDisposed()) return Observable.just("Stop");

                if(values.getCourseCategoryId()!=null){

                if (idServer.compareTo(Integer.parseInt(values.getCourseCategoryId())) == 0) {
                    lst.remove();
                }
              }
            }
        }
        return Observable.just("Finish");
    }
});

使用RxAndroid从列表中删除对象

1 个答案: