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<img src=https://raw.githubusercontent.com/amitshekhariitbhu/RxJava2-Android-Samples/master/assets/rxjava2.png >
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# Learning RxJava 2 for Android by example
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[![Mindorks](https://img.shields.io/badge/mindorks-opensource-blue.svg)](https://mindorks.com/open-source-projects)
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[![Mindorks Community](https://img.shields.io/badge/join-community-blue.svg)](https://mindorks.com/join-community)
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[![Mindorks Android Store](https://img.shields.io/badge/Mindorks%20Android%20Store-RxJava2%20Android%20Samples-blue.svg?style=flat)](https://mindorks.com/android/store)
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[![Open Source Love](https://badges.frapsoft.com/os/v1/open-source.svg?v=102)](https://opensource.org/licenses/Apache-2.0)
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[![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/LICENSE)
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### How to use RxJava 2 in Android Application
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### How to migrate from RxJava 1.0 to RxJava 2.0
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### This project is for :
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* who is migrating to RxJava 2
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* or just started with RxJava.
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## [My Personal Blog - amitshekhar.me](https://amitshekhar.me/blog) - High-quality content to learn Android concepts.
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### Just Build the project and start learning RxJava by examples.
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RxJava 2.0 has been completely rewritten from scratch on top of the Reactive-Streams specification. The specification itself has evolved out of RxJava 1.x and provides a common baseline for reactive systems and libraries.
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Because Reactive-Streams has a different architecture, it mandates changes to some well known RxJava types.
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# Migration From RxJava 1.0 to RxJava 2.0
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To allow having RxJava 1 and RxJava 2 side-by-side, RxJava 2 is under the maven coordinates
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io.reactivex.rxjava2:rxjava:2.x.y and classes are accessible below io.reactivex.
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Users switching from 1.x to 2.x have to re-organize their imports, but carefully.
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### Using RxJava 2.0 Library in your application
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Add this in your build.gradle
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```groovy
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compile 'io.reactivex.rxjava2:rxjava:2.2.2'
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```
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If you are using RxAndroid also, then add the following
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```groovy
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compile 'io.reactivex.rxjava2:rxandroid:2.1.0'
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```
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# RxJava 2 Examples present in this sample project
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* RxJava 2.0 Example using `CompositeDisposable` as `CompositeSubscription` and `Subscription` have
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been removed.
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* RxJava 2 Example using `Flowable`.
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* RxJava 2 Example using `SingleObserver`, `CompletableObserver`.
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* RxJava 2 Example using RxJava2 operators such as `map, zip, take, reduce, flatMap, filter, buffer, skip, merge, concat, replay`, and much more:
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* RxJava 2 Android Samples using `Function` as `Func1` has been removed.
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* RxJava 2 Android Samples using `BiFunction` as `Func2` has been removed.
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* And many others android examples
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# Quick Look on few changes done in RxJava2 over RxJava1
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RxJava1 -> RxJava2
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* `onCompleted` -> `onComplete` - without the trailing d
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* `Func1` -> `Function`
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* `Func2` -> `BiFunction`
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* `CompositeSubscription` -> `CompositeDisposable`
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* `limit` operator has been removed - Use `take` in RxJava2
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* and much more.
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# Operators :
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* `Map` -> transform the items emitted by an Observable by applying a function to each item
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* `Zip` -> combine the emissions of multiple Observables together via a specified function and emit single items for each combination based on the results of this function
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* `Filter` -> emit only those items from an Observable that pass a predicate test
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* `FlatMap` -> transform the items emitted by an Observable into Observables, then flatten the emissions from those into a single Observable
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* `Take` -> emit only the first n items emitted by an Observable
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* `Reduce` -> apply a function to each item emitted by an Observable, sequentially, and emit the final value
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* `Skip` -> suppress the first n items emitted by an Observable
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* `Buffer` -> periodically gather items emitted by an Observable into bundles and emit these bundles rather than emitting the items one at a time
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* `Concat` -> emit the emissions from two or more Observables without interleaving them
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* `Replay` -> ensure that all observers see the same sequence of emitted items, even if they subscribe after the Observable has begun emitting items
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* `Merge` -> combine multiple Observables into one by merging their emissions
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* `SwitchMap` -> transform the items emitted by an Observable into Observables, and mirror those items emitted by the most-recently transformed Observable
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# Highlights of the examples :
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* [DisposableExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/DisposableExampleActivity.java) - Using `CompositeDisposable`
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* [FlowableExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/FlowableExampleActivity.java) - Using `Flowable` and `reduce` operator
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* [SingleObserverExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/SingleObserverExampleActivity.java) - Using `SingleObserver`
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* [CompletableObserverActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/CompletableObserverExampleActivity.java) - Using `CompletableObserver`
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* [MapExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/MapExampleActivity.java) - Using `map` Operator
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* [ZipExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/ZipExampleActivity.java) - Using `zip` Operator, [Blog for reference](https://blog.mindorks.com/understanding-rxjava-zip-operator-with-example)
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* [BufferExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/BufferExampleActivity.java) - Using `buffer` Operator
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* [TakeExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/TakeExampleActivity.java) - Using `take` Operator
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* [ReduceExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/ReduceExampleActivity.java) - Using `reduce` Operator
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* [FilterExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/FilterExampleActivity.java) - Using `filter` Operator
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* [SkipExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/SkipExampleActivity.java) - Using `skip` Operator
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* [ReplayExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/ReplayExampleActivity.java) - Using `replay` Operator
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* [ConcatExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/ConcatExampleActivity.java) - Using `concat` Operator
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* [MergeExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/MergeExampleActivity.java) - Using `merge` Operator
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* [DeferExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/DeferExampleActivity.java) - Using `defer` Observable
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* [SwitchMapExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/SwitchMapExampleActivity.java) - Using `switchMap` Observable
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* [IntervalExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/IntervalExampleActivity.java) - Using `Interval`
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* [RxBusActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/rxbus/RxBusActivity.java) - RxBus, RxJava2Bus, EventBus, RxEventBus, [Blog for reference](https://blog.mindorks.com/implementing-eventbus-with-rxjava-rxbus-e6c940a94bd8)
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* [PaginationActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/pagination/PaginationActivity.java) - Pagination for loadMore in RecyclerView
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* [ComposeOperatorExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/compose/ComposeOperatorExampleActivity.java) - Compose operator for reusable
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* [Search Implementation](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/search/SearchActivity.java) - Using `debounce`, `switchMap`, `distinctUntilChanged`, [Blog for reference](https://blog.mindorks.com/implement-search-using-rxjava-operators-c8882b64fe1d)
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* [Implement Caching Using RxJava Operators](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/cache/CacheExampleActivity.java) - Using `concat`, `firstElement`, [Blog for reference](https://blog.mindorks.com/implement-caching-in-android-using-rxjava-operators)
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* [PublishSubjectExampleActivity](https://github.com/amitshekhariitbhu/RxJava2-Android-Samples/blob/master/app/src/main/java/com/rxjava2/android/samples/ui/operators/PublishSubjectExampleActivity.java)
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### TODO
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* Many examples are to be added
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### Find this project useful ? :heart:
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* Support it by clicking the :star: button on the upper right of this page. :v:
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### Check out an awesome MVP architecture based project which uses RxJava2, Dagger2.
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* [Android-MVP-Architecture](https://github.com/MindorksOpenSource/android-mvp-architecture)
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### Check out an awesome Kotlin MVP architecture based project which uses RxJava2, Dagger2.
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* [Android-Kotlin-MVP-Architecture](https://github.com/MindorksOpenSource/android-kotlin-mvp-architecture)
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### Check out an awesome library for fast and simple networking in Android.
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* [Fast Android Networking Library](https://github.com/amitshekhariitbhu/Fast-Android-Networking)
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### Another awesome library for debugging databases and shared preferences.
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* [Android Debug Database](https://github.com/amitshekhariitbhu/Android-Debug-Database)
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### Learn to build a ride-sharing Android app like Uber, Lyft.
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* [Check here](https://github.com/MindorksOpenSource/ridesharing-uber-lyft-app)
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### [Check out Mindorks awesome open source projects here](https://mindorks.com/open-source-projects)
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### Contact - Let's become friend
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- [Twitter](https://twitter.com/amitiitbhu)
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- [Github](https://github.com/amitshekhariitbhu)
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- [Medium](https://medium.com/@amitshekhar)
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- [Facebook](https://www.facebook.com/amit.shekhar.iitbhu)
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### License
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```
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Copyright (C) 2016 Amit Shekhar
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Copyright (C) 2011 Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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```
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### Contributing to RxJava 2 Android Samples
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Just make pull request. You are in!
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