RxAndroid: Reactive Extensions for Android
Android specific bindings for RxJava 2.
This module adds the minimum classes to RxJava that make writing reactive components in Android
applications easy and hassle-free. More specifically, it provides a
Scheduler that schedules on
the main thread or any given
Since RxAndroid is part of the RxJava family the communication channels are similar:
implementation 'io.reactivex.rxjava2:rxandroid:2.1.0' // Because RxAndroid releases are few and far between, it is recommended you also // explicitly depend on RxJava's latest version for bug fixes and new features. // (see https://github.com/ReactiveX/RxJava/releases for latest 2.x.x version) implementation 'io.reactivex.rxjava2:rxjava:2.x.x'
Additional binaries and dependency information for can be found at http://search.maven.org.
$ git clone firstname.lastname@example.org:ReactiveX/RxAndroid.git $ cd RxAndroid/ $ ./gradlew build
Further details on building can be found on the RxJava Getting Started page of the wiki.
A sample project which provides runnable code examples that demonstrate uses of the classes in this
project is available in the
Observing on the main thread
One of the most common operations when dealing with asynchronous tasks on Android is to observe the task's
result or outcome on the main thread. Using vanilla Android, this would typically be accomplished with an
AsyncTask. With RxJava instead you would declare your
Observable to be observed on the main thread:
Observable.just("one", "two", "three", "four", "five") .subscribeOn(Schedulers.newThread()) .observeOn(AndroidSchedulers.mainThread()) .subscribe(/* an Observer */);
This will execute the
Observable on a new thread, and emit results through
onNext on the main thread.
Observing on arbitrary loopers
The previous sample is merely a specialization of a more general concept: binding asynchronous
communication to an Android message loop, or
Looper. In order to observe an
Observable on an arbitrary
Looper, create an associated
Scheduler by calling
Looper backgroundLooper = // ... Observable.just("one", "two", "three", "four", "five") .observeOn(AndroidSchedulers.from(backgroundLooper)) .subscribe(/* an Observer */)
This will execute the Observable on a new thread and emit results through
onNext on whatever thread is
Bugs and Feedback
Copyright 2015 The RxAndroid authors Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.