Intro to Error Reporting

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Intro to Error Reporting

• Russ Fustino, MVP • CEO Fustino Brothers, Inc• @RussFustino• [email protected]

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A little about me• Former Developer Evangelist for Microsoft,

Xamarin, Raygun and ComponentOne• CEO, Fustino Brothers, Inc• Publisher of Several Windows 8,

Windows Phone 8, iOS, and Android Apps• MVP Microsoft Platform Developer• Publisher of Jethro Tull App, Endorsed

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How did I improve app quality?

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Find Bugs Before your Users do.

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Why is this important?

• Common error reporting for many platforms and languages.• Getting started?• Need more help in analyzing errors and the cause. • I need to know how well my apps works in production. • If my app crashes, I wanted to know about it and what the cause

is?• Stack traces are great, can I get in production?• I needed more app specific information in my error reporting. • Raygun works for Xamarin iOS an Android, but what about

Xamarin Forms?

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What were the Challenges?

• Common error reporting for many platforms and languages.• Getting started?• Need more help in analyzing errors and the cause. • I need to know how well my apps works in production. • If my app crashes, I wanted to know about it and what the cause

is?• Stack traces are great, can I get in production?• I needed more app specific information in my error reporting. • Raygun works for Xamarin iOS an Android, but what about

Xamarin Forms?

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Agenda

• Error Reporting• Initialization• Dashboards for Test and Production environments• Xamarin Dependency Injection• Strategic areas in the code for try / catch• Custom Tags• Affected User support• Passing email address from C# to an HTML page with JavaScript

for affected user support

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Error Reporting

• Did you ever send screenshots? It’s only part of the story• Real Time Notifications, Saving Time… Saves Money• Retain customers… Convert trials• Only 1% of your users even tell you that something is wrong• If I only had stack trace, that would be gold• Error grouping is essential, provides sanity for not exploding

my inbox email• Bottom line… I need to improve developer productivity and

reduce cost

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Raygun Platforms

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Initialization

Generally, one line of code … example for Xamarin iOS

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Raygun Dashboard180 day retention period

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Dashboards for Test and Production

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Global Dashboard

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Grouping on Errors

• It’s not the message that counts, it’s the cause• Use stack trace data to group• Raygun tends to err on side of the error not in the same group• You can merge groups. IE, stack traces are different, but it’s the

same underlining problem

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If an error is serious, you will know

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Affected Users

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Affected Users Properties

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Stack Trace is Gold

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Try / Catch

• Raygun supports unhandled errors• Where you want custom messages, use try catch• Create your own subclasses of Exception to represent

state• Examples, in my app:

• RSS Feed• Navigating to other sites• Handling of images

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Custom Tags

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Passing email address from C# to HTML Page

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Demos

• Xamarin Forms• JavaScript

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Resources

• Some useful plugins for Xamarin (Device, Settings, etc..):• https://github.com/jamesmontemagno/xamarin.plugins

• Affected user tracking:• https://github.com/MindscapeHQ/raygun4net#affected-user-tracking

• Tags: https://github.com/MindscapeHQ/raygun4net#tags-and-custom-data

• .NET Platforms: https://raygun.io/docs/languages/net

• Language support: https://raygun.io/docs/languages

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Resources

• Plugins: https://raygun.io/docs/plugins /

• Workflow: https://raygun.io/docs/workflow/

• Raygun blog: https://raygun.io/blog/

• Case Studies: https://raygun.io/blog/case-studies/

• Dependency Injection: http://developer.xamarin.com/guides/cross-platform/xamarin-forms/dependency-service/

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Summary

• Error Reporting• Initialization• Dashboards for Test and Production environments• Xamarin Dependency Injection• Strategic areas in the code for try / catch• Custom Tags• Affected User support• Passing email address from C# to an HTML page with JavaScript

for affected user support

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Monthly online seminars! 2nd Monday of monthon Business and Apps

• Register at:

www.meetup.com/InBusinessLinksNetwork-FustinoBrothersInc/

• Past presentations

http://www.inbusinessseo.net/tps-blog

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Twitter love• Xamarin www.Xamarin.com • Raygun www.Raygun.io • Xamarin Forms: http://xamarin.com/forms • Windows App Studio: http://appstudio.windows.com

• If you liked this session:

• @RussFustino• @Raygunio• @XamarinHQ• @FustinoBrothers• #MicrosoftAppStudio

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It’s Easy to Connect With Us…

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Connect online

• At Your Computer- If Available Use a Headset • Enter This link:• https://www.startmeeting.com/wall/679-256-129• Click/Tap "Join”-

- Complete your Name and eMail Address - Then "Submit” - The System will Guide from There- Mike Symbol Click/Tap the Green Icon to Red

Test your speaker/mike. If headset doesn't work, orif connection is lost - try "Rejoin”

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Join In – By Phone

• Join-In using a land line / mobile phone• Dial - (530) 881-1212• When prompted enter access code

followed by the "pound" key.• 679-256-129#

(be sure to enter the "#" hashtag symbol)

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