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Daniel Lew
August 02, 2016
Programming
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What to expect when you're expecting to write an Android app
An introduction to writing Android apps, given at a local GDG meetup.
Daniel Lew
August 02, 2016
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Transcript
What to expect when you're expecting to write an Android
app Dan Lew @danlew42
• 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
None
None
Tools
Google Nexus
Android Studio
USB Cable
Becoming a Developer
Concepts
Concepts • Context • Lifecycles • Intents • Permissions •
Configuration
Components • Activities • Services • Broadcast Receivers • Content
Providers
Activity • Views • ViewGroups • findViewById()
Structure
Manifest Your app’s API
Java All your code
Resources Layouts, images, values, configuration, etc…
Gradle Build configuration
Important Libraries
Google Support Libraries • Backwards-compatible implementations • AppCompat • New
features
Google Play Services / Firebase • (Mostly) free Google services
• Ties you to Google-approved devices
Networking • Most apps require internet • HTTP: OkHttp •
REST: Retrofit
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%
Catching Mistakes • Android Lint • StrictMode
First Release Checklist • Some things can (or should) never
change… • Package name • Signing certificate • Manifest API • Crash logger • Publishing Google account
Education
Java • The Internet • Head First Design Patterns •
Effective Java
Android • The Internet • Android documentation • The Busy
Coder's Guide to Android Development
Training • Android @ Udacity • Google Study Jams •
Paid training
Open Source • AOSP: https://source.android.com/ • u2020: https://github.com/JakeWharton/u2020 • iosched:
https://github.com/google/iosched • …And much, much more!
Questions? @danlew42 Slides: https://goo.gl/UWDwjv