June 2018
Intermediate to advanced
280 pages
7h 46m
English
Content preview from Design Patterns and Best Practices in Java
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The create operator
Creating Observables from scratch can be done by calling one of the following io.reactivex.Observable methods (operators):
- Create
- Generate
- UnsafeCreate
The following example shows how to construct an Observable from scratch. Call onNext() until the observer is not disposed, onComplete() and onError() programmatically in order to get a 1 to 4 range of numbers:
As we can see in the preceding screenshot, the output is as expected, range from 1 to 4, and the sequence gets disposed of after usage.
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