Error handling on Android - 1st Android Athens Meetup

Transcript

1. Error Handling Efficient error handling on Android https://github.com/Workable/java-error-handler

2. Error Handling on Android Vasilis Charalampakis Android Software Engineer @

   Workable basilis@workable.com Pavlos-Petros Tournaris Android Software Engineer @ Workable tournaris@workable.com

3. A common problem in Software

4. 1. Have a default handler for every expected (exceptional, common

   or not) error. 2. Handle specific errors as appropriate based on where and when they occur. 3. Have a default catch-all handler for unknown errors. 4. Override any default handler if needed. 5. Keep our code DRY.

5. Global VS Specific Global Handle an error in a common

   way Specific Handle an error specifically for a screen

6. Approach

7. Solution https://github.com/Workable/java-error-handler

8. API • Initialize • Configure • Execute

9. Initialize • defaultErrorHandler() • create() • createIsolated()

10. Configure • on(T, Action) • on(Class<? extends Exception>, Action) •

    clear() • bindErrorCode(T, MatcherFactory<T>) • bindErrorCodeClass(Class<T>, MatcherFactory<T>)

11. Configure • skipFollowing() • skipAlways() • skipDefaults() • always(Action) •

    otherwise(Action)

12. Execute • handle(throwable); • run(() -> foo()); // Coming soon…

13. DEMO https://github.com/pavlospt/error-handler-demo

14. Thanks!