Filter list of objects in RxJava

Question

I am trying to filter the list on the basis of it\'s property. For example, Sensors class has a property isActive and I want to get all the objects with isAct

Answer 1

This code is working for me.

import io.reactivex.Observable
import io.reactivex.android.schedulers.AndroidSchedulers
import io.reactivex.disposables.Disposable
import io.reactivex.observers.DisposableSingleObserver
import io.reactivex.schedulers.Schedulers
import java.util.*
import javax.inject.Inject
import kotlin.collections.ArrayList

    class MainPresenter {
    ....

    var disposable: Disposable? = null
    fun filterArticlesList(text: String?) {
            if (text == null || text.isEmpty()) {
                LogDebug.d("filterArticlesList", "cleared text")
                staticArticlesListFiltered = staticArticlesList
                getView()?.onFilterListSuccess(staticArticlesListFiltered)
            } else {
                val locale = Locale.getDefault()
                val textLower = text.toLowerCase(locale)
                disposable?.dispose()
                disposable = (Observable.fromIterable(staticArticlesList)
                    .subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .filter { article -> article.title.toLowerCase(locale).contains(textLower) }
                    .toList()
                    .subscribeWith(FilterObserver(this@MainPresenter)))
            }
        }

    }
    class FilterObserver(private val presenter: MainPresenter) :
        DisposableSingleObserver>() {
        override fun onSuccess(t: List
) {
            LogDebug.d("FilterObserver", "onSuccess")
        }

        override fun onError(e: Throwable) {
            LogDebug.e("FilterObserver", "onError", e)
        }

    }