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RxJava-Android-Samples | Learning RxJava for Android by example | Reactive Programming library

 by   kaushikgopal Java Version: Current License: Apache-2.0

 by   kaushikgopal Java Version: Current License: Apache-2.0

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kandi X-RAY | RxJava-Android-Samples Summary

RxJava-Android-Samples is a Java library typically used in Programming Style, Reactive Programming applications. RxJava-Android-Samples has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can download it from GitHub.
Learning RxJava for Android by example.
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  • RxJava-Android-Samples has a medium active ecosystem.
  • It has 7457 star(s) with 1388 fork(s). There are 374 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 5 open issues and 49 have been closed. On average issues are closed in 72 days. There are 5 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of RxJava-Android-Samples is current.
This Library - Support
Best in #Reactive Programming
Average in #Reactive Programming
This Library - Support
Best in #Reactive Programming
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quality kandi Quality

  • RxJava-Android-Samples has 0 bugs and 0 code smells.
This Library - Quality
Best in #Reactive Programming
Average in #Reactive Programming
This Library - Quality
Best in #Reactive Programming
Average in #Reactive Programming

securitySecurity

  • RxJava-Android-Samples has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • RxJava-Android-Samples code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
This Library - Security
Best in #Reactive Programming
Average in #Reactive Programming
This Library - Security
Best in #Reactive Programming
Average in #Reactive Programming

license License

  • RxJava-Android-Samples is licensed under the Apache-2.0 License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
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This Library - License
Best in #Reactive Programming
Average in #Reactive Programming

buildReuse

  • RxJava-Android-Samples releases are not available. You will need to build from source code and install.
  • Build file is available. You can build the component from source.
  • Installation instructions are not available. Examples and code snippets are available.
  • RxJava-Android-Samples saves you 2285 person hours of effort in developing the same functionality from scratch.
  • It has 4993 lines of code, 292 functions and 80 files.
  • It has medium code complexity. Code complexity directly impacts maintainability of the code.
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Top functions reviewed by kandi - BETA

kandi has reviewed RxJava-Android-Samples and discovered the below as its top functions. This is intended to give you an instant insight into RxJava-Android-Samples implemented functionality, and help decide if they suit your requirements.

  • Starts the pagination .
  • Gets the DisposableView and wait for it to complete .
  • Start the request
  • Observes results from the generator .
  • Creates github api .
  • Sets the stream subscribed to the worker .
  • Returns a disposable observer .
  • Gets cached disk data .
  • Returns observer for event completion
  • Creates a observer for search events .

RxJava-Android-Samples Key Features

[Learning RxJava For Android by Example : Part 1](https://www.youtube.com/watch?v=k3D0cWyNno4) \[[slides](https://speakerdeck.com/kaushikgopal/learning-rxjava-for-android-by-example)\] (SF Android Meetup 2015)

[Learning Rx by Example : Part 2](https://vimeo.com/190922794) \[[slides](https://speakerdeck.com/kaushikgopal/learning-rx-by-example-2)\] (Øredev 2016)

[Background work & concurrency (using Schedulers)](#1-background-work—​concurrency-using-schedulers)

[Accumulate calls (using buffer)](#2-accumulate-calls-using-buffer)

[Instant/Auto searching text listeners (using Subjects & debounce)](#3-instantauto-searching-text-listeners-using-subjects—​debounce)

[Networking with Retrofit & RxJava (using zip, flatmap)](#4-networking-with-retrofit—​rxjava-using-zip-flatmap)

[Two-way data binding for TextViews (using PublishSubject)](#5-two-way-data-binding-for-textviews-using-publishsubject)

[Simple and Advanced polling (using interval and repeatWhen)](#6-simple-and-advanced-polling-using-interval-and-repeatwhen)

[Simple and Advanced exponential backoff (using delay and retryWhen)](#7-simple-and-advanced-exponential-backoff-using-delay-and-retrywhen)

[Form validation (using combineLatest)](#8-form-validation-using-combinelatest)

[Pseudo caching : retrieve data first from a cache, then a network call (using concat, concatEager, merge or publish)](#9-pseudo-caching—​retrieve-data-first-from-a-cache-then-a-network-call-using-concat-concateager-merge-or-publish)

[Simple timing demos (using timer, interval or delay)](#10-simple-timing-demos-using-timer-interval-and-delay)

[RxBus : event bus using RxJava (using RxRelay (never terminating Subjects) and debouncedBuffer)](#11-rxbus—​event-bus-using-rxjava-using-rxrelay-never-terminating-subjects-and-debouncedbuffer)

[Persist data on Activity rotations (using Subjects and retained Fragments)](#12-persist-data-on-activity-rotations-using-subjects-and-retained-fragments)

[Networking with Volley](#13-networking-with-volley)

[Pagination with Rx (using Subjects)](#14-pagination-with-rx-using-subjects)

[Orchestrating Observable: make parallel network calls, then combine the result into a single data point (using flatmap & zip)](#15-orchestrating-observable-make-parallel-network-calls-then-combine-the-result-into-a-single-data-point-using-flatmap—​zip)

[Simple Timeout example (using timeout)](#16-simple-timeout-example-using-timeout)

[Setup and teardown resources (using using)](#17-setup-and-teardown-resources-using-using)

[Multicast playground](#18-multicast-playground)

Simple Polling: say when you want to execute a certain task every 5 seconds

Increasing Delayed Polling: say when you want to execute a task first in 1 second, then in 2 seconds, then 3 and so on.

http://stackoverflow.com/a/25292833/159825

Another excellent implementation via @[sddamico](https://github.com/sddamico) : https://gist.github.com/sddamico/c45d7cdabc41e663bea1

This one includes support for jittering, by @[leandrofavarin](https://github.com/leandrofavarin) : http://leandrofavarin.com/exponential-backoff-rxjava-operator-with-jitter

[.concat](http://reactivex.io/documentation/operators/concat.html)

[.concatEager](http://reactivex.io/RxJava/javadoc/rx/Observable.html#concatEager(java.lang.Iterable))

[.merge](http://reactivex.io/documentation/operators/merge.html)

[.publish](http://reactivex.io/RxJava/javadoc/rx/Observable.html#publish(rx.functions.Func1)) selector + merge + takeUntil

run a single task after a delay of 2s, then complete

run a task constantly every 1s (there’s a delay of 1s before the first task fires off)

run a task constantly every 1s (same as above but there’s no delay before the first task fires off)

run a task constantly every 3s, but after running it 5 times, terminate automatically

run a task A, pause for sometime, then execute Task B, then terminate

[Implementing an event bus with RxJava](http://blog.kaush.co/2014/12/24/implementing-an-event-bus-with-rxjava-rxbus/)

[DebouncedBuffer used for the fancier variant of the demo](http://blog.kaush.co/2015/01/05/debouncedbuffer-with-rxjava/)

[share/publish/refcount](http://blog.kaush.co/2015/01/21/rxjava-tip-for-the-day-share-publish-refcount-and-all-that-jazz/)

[Matthias example of an Rx based pager](https://gist.github.com/mttkay/24881a0ce986f6ec4b4d)

[Eugene’s very comprehensive Pagination sample](https://github.com/matzuk/PaginationSample)

[Recursive Paging example](http://stackoverflow.com/questions/28047272/handle-paging-with-rxjava)

Have a look at [PR #83 to see the diff of changes between RxJava 1 and 2](https://github.com/kaushikgopal/RxJava-Android-Samples/pull/83/files)

[What’s different in Rx 2.x](https://github.com/ReactiveX/RxJava/wiki/What’s-different-in-2.0)

default

copy iconCopydownload iconDownload
         (flatmap)
f1 ___________________ f3 _______
         (flatmap)               |    (zip)
f2 ___________________ f4 _______| ___________  final output
        \                        |
         \____________ f5 _______|

Query on RxJava thread scheduling

copy iconCopydownload iconDownload
 /**
     * Once that you set in your pipeline the observerOn all the next steps of your pipeline will be executed in another thread.
     * Shall print
     * First step main
     * Second step RxNewThreadScheduler-2
     * Third step RxNewThreadScheduler-1
     */
    @Test
    public void testObservableObserverOn() throws InterruptedException {
        Subscription subscription = Observable.just(1)
                .doOnNext(number -> System.out.println("First step " + Thread.currentThread()
                        .getName()))
                .observeOn(Schedulers.newThread())
                .doOnNext(number -> System.out.println("Second step " + Thread.currentThread()
                        .getName()))
                .observeOn(Schedulers.newThread())
                .doOnNext(number -> System.out.println("Third step " + Thread.currentThread()
                        .getName()))
                .subscribe();
        new TestSubscriber((Observer) subscription)
                .awaitTerminalEvent(100, TimeUnit.MILLISECONDS);
    }
/**
 * Does not matter at what point in your pipeline you set your subscribeOn, once that is set in the pipeline,
 * all steps will be executed in another thread.
 * Shall print
 * First step RxNewThreadScheduler-1
 * Second step RxNewThreadScheduler-1
 */
@Test
public void testObservableSubscribeOn() throws InterruptedException {
    Subscription subscription = Observable.just(1)
            .doOnNext(number -> System.out.println("First step " + Thread.currentThread()
                    .getName()))
            .subscribeOn(Schedulers.newThread())
            .doOnNext(number -> System.out.println("Second step " + Thread.currentThread()
                    .getName()))
            .subscribe();
    new TestSubscriber((Observer) subscription)
            .awaitTerminalEvent(100, TimeUnit.MILLISECONDS);
}
-----------------------
 /**
     * Once that you set in your pipeline the observerOn all the next steps of your pipeline will be executed in another thread.
     * Shall print
     * First step main
     * Second step RxNewThreadScheduler-2
     * Third step RxNewThreadScheduler-1
     */
    @Test
    public void testObservableObserverOn() throws InterruptedException {
        Subscription subscription = Observable.just(1)
                .doOnNext(number -> System.out.println("First step " + Thread.currentThread()
                        .getName()))
                .observeOn(Schedulers.newThread())
                .doOnNext(number -> System.out.println("Second step " + Thread.currentThread()
                        .getName()))
                .observeOn(Schedulers.newThread())
                .doOnNext(number -> System.out.println("Third step " + Thread.currentThread()
                        .getName()))
                .subscribe();
        new TestSubscriber((Observer) subscription)
                .awaitTerminalEvent(100, TimeUnit.MILLISECONDS);
    }
/**
 * Does not matter at what point in your pipeline you set your subscribeOn, once that is set in the pipeline,
 * all steps will be executed in another thread.
 * Shall print
 * First step RxNewThreadScheduler-1
 * Second step RxNewThreadScheduler-1
 */
@Test
public void testObservableSubscribeOn() throws InterruptedException {
    Subscription subscription = Observable.just(1)
            .doOnNext(number -> System.out.println("First step " + Thread.currentThread()
                    .getName()))
            .subscribeOn(Schedulers.newThread())
            .doOnNext(number -> System.out.println("Second step " + Thread.currentThread()
                    .getName()))
            .subscribe();
    new TestSubscriber((Observer) subscription)
            .awaitTerminalEvent(100, TimeUnit.MILLISECONDS);
}

Community Discussions

Trending Discussions on RxJava-Android-Samples
  • RxJava2 Flowable.combineLatest behavior if all Flowables don't emit
  • Query on RxJava thread scheduling
  • How to getFragments() with Support Library 25.0.0 and up
Trending Discussions on RxJava-Android-Samples

QUESTION

RxJava2 Flowable.combineLatest behavior if all Flowables don't emit

Asked 2017-Jul-05 at 19:55

I am following this code to do some error validation. Here's the combineLatest implementation which accepts inputs from 3 fields and does error validation on each of them.

Flowable.combineLatest(
            _emailChangeObservable,
            _passwordChangeObservable,
            _numberChangeObservable,
            (newEmail, newPassword, newNumber) -> {
              boolean emailValid = !isEmpty(newEmail) && EMAIL_ADDRESS.matcher(newEmail).matches();
              if (!emailValid) {
                _email.setError("Invalid Email!");
              }

              boolean passValid = !isEmpty(newPassword) && newPassword.length() > 8;
              if (!passValid) {
                _password.setError("Invalid Password!");
              }

              boolean numValid = !isEmpty(newNumber);
              if (numValid) {
                int num = Integer.parseInt(newNumber.toString());
                numValid = num > 0 && num <= 100;
              }
              if (!numValid) {
                _number.setError("Invalid Number!");
              }

              return emailValid && passValid && numValid;
            })
        .subscribe(_disposableObserver);

My problem is that the combiner function is not triggered unless all 3 input field observables have emitted at least once. So when users enter an incorrect email address, they are not notified until they have entered some data in all the 3 fields.

ANSWER

Answered 2017-Jul-05 at 19:55

combineLatest() must have all values for starting emitting something, as by definition the combiner function gets n values that emitted from n sources.

When RxBInding wraps TextView events with RxTextView, it emits an initial value (contents of the TextView) when subscribed, so without the skip(1), you will have your desired logic, the thing is the validation logic in this sample do not expect that, and display error for empty values (by the !isEmpty(newXXX) checks).
My hunch based on the explicit skip(1) transformation is that in this example this is the desired behavior - meaning just when all fields has been entered we need to display errors.

In your case if you want to implement your logic, you need to skip empty values from displaying errors while still emit false at the end as the whole input is not yet valid, then - with any change at any fields independent of the others, while not empty you will the errors .

Source https://stackoverflow.com/questions/44934279

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install RxJava-Android-Samples

You can download it from GitHub.
You can use RxJava-Android-Samples like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the RxJava-Android-Samples component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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