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!