What to expect when you're expecting to write an Android app

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What to expect when you're expecting to write an Android app Dan Lew @danlew42

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• Android Studio • apt • adb • Calligraphy • ButterKnife • dex • dexmaker • Retrolambda • OkHttp • Phrase • Picasso • Genymotion • Dagger • RxJava • RxAndroid • RxBinding • RxLifecycle • RxRelay • RxLint • Support library • Design support library • Palette • CardView • RecyclerVie w • Test support library • App compat • LeakCanary • Otto • EventBus • Gson • Stethp • SqlBrite • SqlDelight • Retroﬁt • Tape • Timber • Navi • OrmLite • Process Phoenix • Google Play Services • Firebase • RoundedIma geView • Subsamplin g Scaling ImageView • Victor • joda-time • joda-time- android • auto-value • auto-value- gson • auto-value- parcelable • android-apt • Apache commons • BetterPicker s • Crashlytics • gradle- versions- plugin • Hugo • Quantcast • Mockito • Sticky List Headers • Error Prone • Hierarchy Viewer • systrace • Gradle • Logcat • Pro guard

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Tools

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Google Nexus

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Android Studio

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USB Cable

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Becoming a Developer

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Concepts

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Concepts • Context • Lifecycles • Intents • Permissions • Conﬁguration

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Components • Activities • Services • Broadcast Receivers • Content Providers

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Activity • Views • ViewGroups • ﬁndViewById()

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Structure

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Manifest Your app’s API

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Java All your code

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Resources Layouts, images, values, conﬁguration, etc…

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Gradle Build conﬁguration

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Important Libraries

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Google Support Libraries • Backwards-compatible implementations • AppCompat • New features

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Google Play Services / Firebase • (Mostly) free Google services • Ties you to Google-approved devices

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Networking • Most apps require internet • HTTP: OkHttp • REST: Retroﬁt

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Rookie Mistakes • Developing for a single screen size • Mishandling conﬁguration changes • Using implicit intents • Blocking the main thread • Overstufﬁng Activity • Forgetting internet permission • Following Google 100%

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Catching Mistakes • Android Lint • StrictMode

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First Release Checklist • Some things can (or should) never change… • Package name • Signing certiﬁcate • Manifest API • Crash logger • Publishing Google account

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Education

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Java • The Internet • Head First Design Patterns • Effective Java

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Android • The Internet • Android documentation • The Busy Coder's Guide to Android Development

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Training • Android @ Udacity • Google Study Jams • Paid training

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Open Source • AOSP: https://source.android.com/ • u2020: https://github.com/JakeWharton/u2020 • iosched: https://github.com/google/iosched • …And much, much more!

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Questions? @danlew42 Slides: https://goo.gl/UWDwjv