Rx presentation
- 1. REACTIVE X TALENT DEVELOPMENT, BINAR ACADEMY FRIDAY, MAY 11, 2018
- 2. BACKGROUND • Nowadays programming in an imperative single threaded way usually leads to strange behaviors, blocking non responsive UIs and therefore a bad user experience. • This can be avoided by handling unpredicted things asynchronously. For example actively waiting for a database query or a webservice call can cause an application freeze, if the network is not responsive.
- 3. BACKGROUND • Developing a complex Android app that has lots of network connections, user interactions, and animations often means writing code that is full of nested callbacks. • Sometimes called callback hell, is not only lengthy and hard to understand, hard to maintain. • ReactiveX offers an alternative approach that is both clear and concise, to manage asynchronous tasks and events.
- 4. REACTIVE-X An API for asynchronous programming with observable streams Official website : http://reactivex.io/
- 5. OBSERVABLES, OBSERVERS AND OPERATOR 1. Observable • Emit Item (Objects, Strings, Integers etc.). • Does not start emitting till someone subscribes 2. Observer • To watch Observables by subscribing to them and consumes data 3. Operator • Transform, Filter, etc
- 7. OBSERVER onNext() This method will be called when there is any new data emitted by the observer. The object that is emitted by the observable can be found in argument parameters of this callback. onError() You will receive this callback whenever there is any error occurred on observable. (After all the world is not perfect.) onComplete() Whenever observable is done with emitting the data streams, you will receive this callback. This indicates that there is no more data to emit.
- 9. OPERATOR Create, Defer, Empty/Never/Throw, From, Interval, Just, Range, Repeat, Start, Timer, Buffer, FlatMap, GroupBy, Map, Scan, Window, Debounce, Throttle, Distinct, ElementAt, Filter, First, IgnoreElements, Last, Sample, Skip, SkipLast, Take, TakeLast, And/Then/When, CombineLatest, Join, Merge, StartWith, Switch, Zip, Catch, Retry, Delay, Do, Materialize/Dematerialize, ObserveOn, Serialize, Subscribe, SubscribeOn, TimeInterval, Timeout, Timestamp, Using, All, Amb, Contains, DefaultIfEmpty, SequenceEqual, SkipUntil, SkipWhile, TakeUntil, TakeWhile, Average, Concat, Count, Max, Min, Reduce, Sum, Connect, Publish, RefCount, Replay, To
- 11. MORE SOURCES • https://blog.mindorks.com/understanding-rxjava-subject-publish-replay-behavior-and-async-subject- 224d663d452f • https://github.com/amitshekhariitbhu/RxJava2-Android-Samples