How not to fuckup with building mobile SDK and make clients happy (DevFest Prague)

@zasadnyy With building the mobile SDK How not to Fuck
Up Vitaliy Zasadnyy Head of Mobile @ GetSocial

@zasadnyy Integrated SDK. But it doesn’t work.

Developer. GDG Lead. Public Speaker. @zasadnyy

@zasadnyy UNDERSTANDING “WHY?” BETTER DEVELOPER MAKES YOU A

@zasadnyy My first library… Develop

@zasadnyy

@zasadnyy SDK Lifecycle Develop 1

@zasadnyy SDK Lifecycle Develop 1 Integrate 2 Support 3 Update
4

Develop 1

Integrate

<receiver android:name="im.getsocial.InstallReferrerReceiver"> <intent-filter> <action android:name="com.android.vending.INSTALL_REFERRER"/> </intent-filter> </receiver> <provider android:name="im.getsocial.sdk.invites.ImageContentProvider" <meta-data
android:name="im.getsocial.sdk.AppId" android:value="LuDPp7W0J4"/> <activity android:name="com.demo.GetSocialDeepLinkingActivity"> <intent-filter> <action android:name="android.intent.action.VIEW"/> <category android:name="android.intent.category.DEFAULT"/> <category android:name="android.intent.category.BROWSABLE"/> <data android:scheme="https" android:host="demo.gsc.im"/> <data android:scheme="getsocial" android:host="LuDPp7W0J4"/> </intent-filter> </activity> GetSocial.init()

@zasadnyy Android manifest merging App manifest Lib 1 manifest Lib
2 manifest Lib N manifest …

@zasadnyy Gradle plugin apply plugin: 'im.getsocial'

@zasadnyy Gradle plugin apply plugin: 'im.getsocial' getsocial { appId "LGa80P9790xsg4"
}

@zasadnyy Android Studio plugin

@zasadnyy Auto initialisation <provider android:name="im.getsocial.AutoInitContentProvider" android:authorities="..." android:exported="false" />

@zasadnyy Boilerplate ➡ Copy/Paste ➡ Bugs Why?

@zasadnyy IS BETTER LESS CODE

@zasadnyy API SURPRISES AVOID

@zasadnyy Avoid API surprises Thread.interrupted() Returns the current interrupted status
and then clears it

@zasadnyy Avoid API surprises

@zasadnyy Avoid API surprises Thread.interrupted() Returns the current interrupted status
and then clears it

@zasadnyy Make API of your library as boring as possible
- Chris Sells, Google

@zasadnyy

@zasadnyy INTERNALS HIDE

@zasadnyy Hide internals

@zasadnyy Hide internals Use .internal package Keep everything private by
default Bonus: easy to generate Javadocs

@zasadnyy There is much more!

@zasadnyy ? Library is crashing your app?

@zasadnyy

@zasadnyy CRASH HOST APP NEVER

@zasadnyy Prevent crashes Rx @Nullable / PMD / FindBugs /
Lint Development Mode

@zasadnyy Development mode if (BuildConfig.IS_DEVELOPMENT) { _executionPolicy = new StrictExecutionPolicy();
}

@zasadnyy Development mode if (BuildConfig.IS_DEVELOPMENT) { _executionPolicy = new StrictExecutionPolicy();
} else { _executionPolicy = new SilentExecutionPolicy(); }

@zasadnyy SUPPORT

@zasadnyy Give a voice to your users GitHub issue tracker
Intercom Support email …

@zasadnyy Get ready to repetitive questions

@zasadnyy DOCS

@zasadnyy Documentation is like sex. Even bad is better than
nothing

@zasadnyy Key parts Step by step tutorials Product guides API
Reference

@zasadnyy

@zasadnyy What is wrong with snippet? CurrentUser user = getSocial.getCurrentUser();

@zasadnyy ALL SNIPPETS MUST COMPILE

@zasadnyy Better snippet import im.getsocial.sdk.GetSocial; import im.getsocial.sdk.CurrentUser; ... CurrentUser user
= GetSocial.getInstance().getCurrentUser();

Google Developers Documentation Style Guide

@zasadnyy Documentation engine GitHub Wiki Jekyll MkDocs …

@zasadnyy ? Favourite source of copy / paste code?

@zasadnyy

@zasadnyy DEMOS

@zasadnyy Demo apps Make demos well documented Keep SDK integration
code separated

Support

@zasadnyy ? You’ve got support request. Now what?

@zasadnyy Two types of problems Integration time problems End-user side
problems

@zasadnyy Easy way to collect DEBUG information

@zasadnyy Debug SDK configuration adb shell setprop debug.getsocial.sdk.app com.demo

@zasadnyy Actionable errors public class GetSocialException extends RuntimeException { private
final int _errorCode; … }

@zasadnyy Solving end-user side problems Comprehensive logs Errors analytics

@zasadnyy Solving end-user side problems void trackError(GetSocialException exception) { ...
AnalyticsTrackManager.trackAnalyticsEvent( AnalyticsEventDetails.Name.SDK_ERROR, eventProperties); }

@zasadnyy

@zasadnyy THINK ABOUT SUPPORT AHEAD

Update

@zasadnyy ? Just download and lean back?

@zasadnyy Update. Build. And…

@zasadnyy

@zasadnyy UPDATES SMOOTH

@zasadnyy Backward compatibility Use @Deprecation cycle /** * @deprecated use
{@link #getAllIdentities()} instead. * Method will be removed in SDK v5.0.0. */ @Deprecated public List<String> getIdentities() { ... }

@zasadnyy Semantic versioning v4.5.1 Major Minor Bugﬁx

@zasadnyy Versioned packages import okhttp3; import im.getsocial.sdk6;

@zasadnyy Versioned packages Partial transition A/B testing import okhttp3; import
im.getsocial.sdk6;

@zasadnyy Changelog Fixed issues New features Deprecations Upgrade guide

@zasadnyy

To sum up

@zasadnyy PER APP 17 SDKs Source: Safe SDK

@zasadnyy SDK Lifecycle Develop 1

@zasadnyy SDK Lifecycle Develop Integrate Support Update 1 2 3
4

@zasadnyy API can be you biggest asset of liability -
Joshua Bloch Put yourself in your customer’s shoes - Cesare Rocchi

@zasadnyy Happy dog Make clients happy again.

@zasadnyy Find me at: @zasadnyy / zasadnyy.com Questions? Děkuji! Get
the app at: devfestcz.gsc.im/1/getamos

How not to fuckup with building mobile SDK and ...

How not to fuckup with building mobile SDK and make clients happy (DevFest Prague)

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