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Introduction to Instant Apps⚡ Marcin Koziński

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Instant Apps? Native apps that run without installation

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https://developer.android.com/topic/instant-apps/ux-best-practices.html

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https://developer.android.com/topic/instant-apps/ux-best-practices.html sandbox/runtime .apk .apk .apk or

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No content

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.apk

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.apk .apk .apk .apk

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.apk .apk .apk .apk

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.apk .apk .apk .apk

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.apk .apk .apk .apk

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.apk .apk .apk .apk base

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.apk .apk .apk .apk features base

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.apk .zip .apk .apk .apk features base

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.apk .zip .apk .apk .apk features base .apk .zip

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.apk .zip .apk .apk .apk features base single feature multi-feature .apk .zip

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single feature sandbox/runtime .apk .apk .zip

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.apk .zip .apk .zip .apk .apk .apk features base single feature multi-feature

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.apk .zip .apk .apk .apk features base multi-feature sandbox/runtime .apk .apk feature base

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.apk .zip .apk .apk .apk features base multi-feature .apk feature sandbox/runtime

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apply plugin: 'com.android.application' apply plugin: 'com.android.library'
 !// New in com.android.tools.build:gradle:3.0.0 apply plugin: 'com.android.feature' apply plugin: 'com.android.instantapp' a

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Single-feature instant app .java :app .java .xml .png apply plugin: 'com.android.application' .java

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Single-feature instant app .java :app .java .xml .png apply plugin: 'com.android.application' .java :base apply plugin: 'com.android.library'

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Single-feature instant app .java :app .java .xml .png apply plugin: 'com.android.application' .java :base !//apply plugin: 'com.android.library' apply plugin: 'com.android.feature'

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Single-feature instant app .java :app .java .xml .png apply plugin: 'com.android.application' .java :base !//apply plugin: 'com.android.library' apply plugin: 'com.android.feature' :instantapp apply plugin: 'com.android.instantapp'

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Single-feature instant app :app apply plugin: 'com.android.application' :base baseFeature true dependencies { !//… application project(‘:app') } :instantapp apply plugin: 'com.android.instantapp'

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Multi-feature instant app :app :base :instantapp :feature-a :feature-b

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https://www.flickr.com/photos/centralasian/5229725173

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do don’t

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4MB limit • You: <4MB? NO WAI • Me: YAS WAI # • APK Analyzer, Proguard, shrink resources/unused resources, .webp, … • Android Instant Apps: Best practices for managing download size • Wojtek Kaliciński: #SmallerAPK, session at Google I/O '17

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https://developer.android.com/topic/instant-apps/ux-best-practices.html sandbox/runtime .apk .apk .apk or

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Derp links

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Deep links

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Deep links ! ! !!!

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Deep links !// Later in activity onCreate final Uri uri = getIntent().getData(); if (uri !!= null) { uri.getPathSegments(); !// List ["hello", "world"] }

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App Links ! !

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App Links ! !

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App Links • Upload a special JSON to a “well-known” location on your servers.
 https:///.well-known/assetlinks.json • https://d.android.com/training/app-links/index.html • http://zdominguez.com/2017/01/20/testing-autoverify.html • App links assistant in Android Studio • MCE 2017: Cyril Mottier, Seamless Linking to Your App

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Default URL

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Default URL …q ! !

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Default URL ! …q ! !

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Implement runtime permissions https://material.io/guidelines/patterns/permissions.html#permissions-request-patterns

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What API levels does this support? Google I/O ’16 Keynote: “All the way back to Jelly Bean!!!1” Demoed on a KitKat device! Android 5.0 Lollipop (API 21)+

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Restrictions • Only available device identifier: Advertising ID • You can’t see a full list of apps installed on the device • Can’t change device settings such as change the user's wallpaper • No running in the background • No push notifications • No access to external storage • You’ll receive only some implicit broadcasts

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Restrictions • Network traffic from inside the instant app must be encrypted using a TLS protocol like HTTPS

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Tools • Android Studio 3.0, Android Gradle Plugin 3.0. • Instant Apps SDK (downloadable from the SDK Manager in AS). •aimplementation 'com.google.android.instantapps:instantapps:1.0.0' • Mostly all existing libraries, subject to “requirements & restrictions” • Mostly normal workflow: run from AS, attach debugger, etc.
 (Note: need to sign in with a Google account on device/emulator.)

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Photo by Helloquence on Unsplash

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Publishing https://medium.com/aubergine-solutions/its-all-about-android-instant-apps-e27b66c04a07

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https://developer.android.com/topic/instant-apps/index.html “Native Android apps that run instantly,
 without the installation” “An upgrade to your existing Android app, not a new, separate app. It's the same Android APIs, the same project, and the same source code.”

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Learn more… • Docs at https://g.co/instantapps • Podcasts: • Fragmented #090 with Zarah Dominguez, • ADB 84: Instant Apps • 3 Google I/O '17 sessions (linked here, here and here) • Android Instant Apps, step-by-step: how Vimeo went about it • From Westinghouse to Android Instant apps, a BuzzFeed Journey • Ask me @marcinkozinski