Error handling on Android - 1st Android Athens Meetup

Transcript

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

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2. Error Handling on
   Android
   Vasilis Charalampakis
   Android Software Engineer @ Workable
   basilis@workable.com
   Pavlos-Petros Tournaris
   Android Software Engineer @ Workable
   tournaris@workable.com
   

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3. A common problem in
   Software
   

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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.
   

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5. Global VS Specific
   Global
   Handle an error in a common way
   Specific
   Handle an error specifically for a screen
   

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6. Approach
   

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

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8. API
   ● Initialize
   ● Configure
   ● Execute
   

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

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10. Configure
    ● on(T, Action)
    ● on(Class extends Exception>, Action)
    ● clear()
    ● bindErrorCode(T, MatcherFactory)
    ● bindErrorCodeClass(Class, MatcherFactory)
    

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11. Configure
    ● skipFollowing()
    ● skipAlways()
    ● skipDefaults()
    ● always(Action)
    ● otherwise(Action)
    

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

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

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14. Thanks!
    

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