Google I/O Extended Lagos ’16 2016 moyinoluwa Moyinoluwa ADEYEMI Android - What’s new?

https://ng.linkedin.com/in/moyinoluwa @moyheen @moyheen Moyinoluwa Adeyemi Software Engineer, GDG Lagos Co-organizer

Android - What’s new for Nigerian Developers? What if the topic was...

Android - What’s new for Nigerian Developers? #IO16 Developers Users

#IO16 Developers Users

Related Google I/O session Android battery and memory optimizations (https://goo.gl/cVDwub) Doze mode (M vs. N)

Doze mode (M vs. N) Android battery and memory optimizations Android battery and memory optimizations

Android battery and memory optimizations Battery life and Memory ● Reduce - Reduce all background activity ● Defer - Defer background activities to when device is on charger ● Coalesce - If it can’t be deferred, coalesce it with other background activity to avoid overhead

Android Battery and Memory optimizations Alternatively, ● Use the Android JobScheduler API on L+ devices ● or the Firebase JobDispatcher library on Pre-L devices

Android JobScheduler An API for scheduling various types of jobs against the framework that will be executed in your application’s own process

Firebase JobDispatcher GCM Network Manager === Firebase JobDispatcher A new open source SDK for scheduling and executing background activity on Android. Coming soon for iOS. Available on devices with Google Play Services installed

Getting started with JobScheduler/JobDispatcher I/O Codelab g.co/codelabs/jobscheduler

Battery Historian Tool for monitoring all impact on the battery github.com/google/battery-historian

Related Google I/O sessions Lean and fast - putting your app on a diet (https://goo.gl/Yro9EZ) Image compression for Android Developers (https://goo.gl/bDs011) Putting your app on a diet

Components of an APK Lean and Fast - putting your app on a diet

Images... PNG JPG WebP - A modern image format that provides superior lossless and lossy compression for images on the web. Get it here: https://developers.google.com/speed/webp/download VectorDrawable - Creates a drawable based on an XML vector graphic

Optimize images <4.0: Use webp images instead of jpg and transparent pngs >4.2.1: Use webp images instead of pngs >5.0: Use VectorDrawable <5.0: Use VectorDrawableCompat

Other options... android { ……… release { minifyEnabled true shrinkResources true cruncherEnabled false proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’ } }

Other options... android { ……… release { minifyEnabled true shrinkResources true cruncherEnabled false proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’ } }

Other options... android { ……… release { minifyEnabled true shrinkResources true cruncherEnabled false proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’ } }

APK > 100MB Have multiple APKs

#IO16 Users Developers

Related Google I/O sessions What’s new in Android (https://goo.gl/7BsfNj) What’s new in Android development tools (https://goo.gl/ldgHVG) Development tools

Development tools ● Layout Editor ● Constraint Layout ● Layout Inspector ● Firebase Plugin ● Enhanced code analysis ● Samples browser ● Espresso test recorder ● APK Analyzer...

Getting started Install Android 2.2 preview 3: https://goo.gl/CiWjqy Helpful articles on ConstraintLayout ● http://android-developers.blogspot.com.ng/2016/05/android-studi o-22-preview-new-ui.html ● http://segunfamisa.com/posts/constraint-layout-in-android ● http://riggaroo.co.za/constraintlayout-101-new-layout-builder-and roid-studio/ ● https://medium.com/google-developer-experts/first-impressions- of-androids-new-constraintlayout-c6d081b2bc2a

thank you