Fragmented - Android Developer Podcast

In this episode, we dive into one of our most requested topics and highly anticipated ones - Flutter. To help us understand Flutter in-depth, we talk to Flutter's GDE Eugenio Marletti. In Part 1 of this 2 part series, Eugenio helps us understand what flutter is, why it was created, how it works, some really cool features with Flutter and why an AndroiDev today should really give Flutter a good look. We got so carried away in conversation, that we were forced to break this episode into two parts. Stay tuned for Part 2. Show Notes Clue app Announcing Flutter beta 1 Embedding Flutter into an existing app (examples flutter_view & platform_view) Stepper widget Getting started on Flutter (docs) Compiled vs Interpreted languages Sponsors Microsoft AppCenter – Sign up now on appcenter.ms and spend less time managing your app lifecycle and more time coding. Contact @workingkills [twitter.com] @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this episode, Donn and Kaushik sit down to talk about multi-module builds with Gradle. They talk about how you can separate your build into multiple different modules and how you might go about implementing it. They discuss build performance with incremental compilation, isolation of features, code ownership and how to handle cross-cutting concerns like persistence and networking. Show Notes Instant Apps Episode Android Library Module vs Feature Module Implementation vs Compile - A Visual Guide Writing a Modular app in Android ButterKnife Woes Android Studio and Pure Java Modules Sam Edwards buildSrc and build.gradle Autocomplete Post Sam Edwards Gradle Ext Video Sam Edwards Gradle AutoComplete Phil Breault Renaming Gradle Build Files Google Arch Samples - versions.gradle Sponsors Microsoft AppCenter – Sign up now on appcenter.ms and spend less time managing your app lifecycle and more time coding. Contact @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this episode of learning kotlin, we look at 3 important keywords - inline, noinline and crossinline. The inline keyword is super common and you've probably run across this one at some point. What does it mean and when is it useful? We also look at the related but seldom used variants noinline and crossinline. Show Notes Kotlin Inline functions Code Snippets: Look at the official shownotes page for some code snippets Misc: PublishedApi annotation Matt Logan's post on inline keyword Ben Daniel Medium post - inline, noinline, crossinline — What do they mean? Sponsors Microsoft AppCenter – Sign up now on appcenter.ms and spend less time managing your app lifecycle and more time coding. Contact @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this episode, we talk about the different parts of Android architecture components. We've had episodes on Room and the paging library, so in this one, we thought we'll touch a little on Lifecycle Owners & Observers, ViewModels, and LiveData. Akshay Chordiya helps break it down. Listen on! Show Notes Android Architecture Components Lifecycle Handling lifecycles with Lifecycle-Aware Components Lifecycle Owner Lifecycle Observer Best practices for lifecycle-aware components Caveat: handling onStop events ViewModels Architecture Guide: ViewModels View Model Code snippet for a ViewModelFactory: class UserVMFactory( val user: MyUser ) : ViewModelProvider.Factory { override fun create(modelClass: Class): T { return when { modelClass.isAssignableFrom(UserVM::class.java) -> UserVM(user) as T else -> throw IllegalArgumentException("Unknown ViewModel class") } } } LiveData Live Data MediatorLiveData Misc Android Architecture Components Deep Dive Course on Caster.IO Fragmented - Room episode with Florina Fragmented - AAC Paging library with Florina Sponsors Microsoft AppCenter - Sign up now on appcenter.ms and spend less time managing your app lifecycle and more time coding. Contact @Akshay_Chordiya [twitter.com] @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this episode, we talk to Patrick Nikoletich from Microsofts App Center team. We explore the intricacies of the Continuous Integration server system on the App Center platform. From what App Center is, all the way down into the weeds to how to get your app building on App Center in a few short steps. We also get into the nitty gritty details around how you can customize your build with build hooks, install utilities and binaries, work with a command line interface, shell scripts, the App Center API much much more. This episode shows a new side of Microsoft that we have not seen in a long time and its a breath of fresh air. Also, view the show notes at http://fragmentedpodcast.com/episodes/114/ Show Notes VSTS: https://www.visualstudio.com/team-services/ Microsoft on GitHub: https://github.com/Microsoft The App Center CLI: https://github.com/Microsoft/appcenter-cli Azure function that automatically creates branch configurations for PR's and communicates status back to Github.: https://github.com/pniko/function-appcenter-build- App Center API: https://docs.microsoft.com/en-us/appcenter/api-docs/ & https://openapi.appcenter.ms/ Detox fo React Native Native: https://github.com/wix/detox Azure Server Functions: https://azure.microsoft.com/en-us/services/functions/ Sponsors Mapbox - Android developers don't have to settle for a default same-map-no-matter-what option in their Android app. Mapbox offers complete map design control, allowing you to create beautiful custom maps to meet the needs of your Android users. Contact @lbcpat [twitter.com] @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this episode we catch up with a highly energetic but sick Christina Lee about the delightful details in the Pinterest app, delving with the dark side (Swift), giving live coding presentation talks and touching on some Kotlin details like covariance and contravariance. Listen on for a power-packed 40 minutes. Show Notes Google IO episode (#84) for Christina's running story Pinterest app Calligraphy by Chris Jenkins Android 8.0 Custom fonts Material design guidelines Brio design system by Pinterest's Lin Wang and Thorben Primke Pinterest stars you should follow on Twitter -> Mallika & Alice Christina's code from Kotlintown talk Christina & Huyen presentation from KotlinConf Sponsors Mapbox - Android developers don't have to settle for a default same-map-no-matter-what option in their Android app. Mapbox offers complete map design control, allowing you to create beautiful custom maps to meet the needs of your Android users. Show Notes Google IO episode (#84) for Christina's running story Pinterest app Calligraphy by Chris Jenkins Android 8.0 Custom fonts Material design guidelines Brio design system by Pinterest's Lin Wang and Thorben Primke Pinterest stars you should follow on Twitter -> Mallika & Alice Christina's code from Kotlintown talk Christina & Huyen presentation from KotlinConf Sponsors Mapbox - Android developers don't have to settle for a default same-map-no-matter-what option in their Android app. Mapbox offers complete map design control, allowing you to create beautiful custom maps to meet the needs of your Android users. Contact @runChristinaRun [twitter.com] @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this mini-fragment episode, Donn talks about Item #9 of the Effective Java (Third Edition) book - Prefer try with resources to try finally. Please note, this episode references the third edition of the Effective Java book that recently came out. Previously we were doing the entire series on version 2, but we are now upgrading to version 3 of the book. We will not be re-doing any of the existing lessons, but if one was inserted in the mix, then we will do that lesson. Links Effective Java (3rd Edition) Book Sponsors Mapbox - Android developers don't have to settle for a default same-map-no-matter-what option in their Android app. Mapbox offers complete map design control, allowing you to create beautiful custom maps to meet the needs of your Android users. Check them out today at mapbox.com/android Contact @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this mini-fragment episode, Donn talks about Item #5 of the Effective Java (Third Edition) book - Prefer Dependency Injection to Hardwiring Resources. Please note, this episode references the third edition of the Effective Java book that recently came out. Previously we were doing the entire series on version 2, but we are now upgrading to version 3 of the book. We will not be re-doing any of the existing lessons, but if one was inserted in the mix, then we will do that lesson. This is the case with Item #5. We did Item #5 previously for v2 of the book, but v3 introduced a new Item 5 (and bumped the previous Item 5 up to 6). TLDR; Item #5 is new in the third edition of the Effective Java book. So listen closely. :) Links Effective Java (3rd Edition) Book Sponsors Mapbox - Android developers don't have to settle for a default same-map-no-matter-what option in their Android app. Mapbox offers complete map design control, allowing you to create beautiful custom maps to meet the needs of your Android users. Check them out today at mapbox.com/android Contact @fragmentedcast [twitter.com] @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this episode of Fragmented, we talk about CI, CD and CD services. That's Continuous Integration, Continuous Delivery, and Continuous Deployment. BuddyBuild a beloved 3rd party service of ours (and previous sponsor) is sunsetting their Android service, so Donn and KG discuss alternatives and the options they've been keeping an eye on. Listen on: Download directly Show Notes BuddyBuild is now part of Apple Google buys Sparrow Differences between CI/CDs services Good article on CI Nice infomatic explaining CD vs CD Options for CI Services Jenkins CloudBees - enterprise Jenkins Bitrise Bitrise and Firebase test lab NeverCode Welcoming Android developers blog post by NeverCode Microsoft AppCenter Ep 104 - Donn talks to the Samina from AppCenter Circle CI 2.0 docs Testing with Firebase test lab Team City - Jetbrains Code Ship Sponsors Mapbox - - Android developers don't have to settle for a default same-map-no-matter-what option in their Android app. Mapbox offers complete map design control, allowing you to create beautiful custom maps to meet the needs of your Android users. Check them out today at mapbox.com/android Contact @fragmentedcast [twitter.com] @ryanjsalva @donnfelker and 📷 donnfelker @kaushikgopal and 📷 kaushikgopal

In this episode of Fragmented, we go back to learning some Kotlin and look at the Iterable like data structure introduced called "Sequences". What is a sequence? How is it different from Iterable? When should I use it? Show Notes Kotlin Sequence Java Iterable vs Iterator - stackoverflow.com Eager/Lazy Eager evaluation: val lst = listOf(1, 2) val lstMapped: List = lst.map { print("$it "); it * it } print("before sum ") val sum = lstMapped.sum() // prints "1 2 before sum" Lazy evaluation: val seq = sequenceOf(1, 2) val seqMapped: Sequence = seq.map { print("$it "); it * it } print("before sum ") val sum = seqMapped.sum() // prints "before sum 1 2" Source stackoverflow.com answer Intermediate and terminal operations Notice that at each chain operation, a new temporary list is created: data class Person(val name: String, val age: Int) fun main(args: Array) { val people = listOf(Person("Chris Martin", 31), Person("Will Champion", 32), Person("Jonny Buckland", 33), Person("Guy Berryman", 34), Person("Mhris Cartin", 30)) println(people .filter { it.age > 30 } // new temp. list .map { it.name.split(" ").map {it[0]}.joinToString("") } // new temp. list .map { it.toUpperCase() }) // new temp. list } Using a sequence: println(people .asSequence() // convert to sequence .filter { it.age > 30 } // lazy eval (intermediate op) .map { it.name.split(" ").map {it[0]}.joinToString("") } // lazy eval (intermediate op) .map { it.toUpperCase() } // lazy eval (intermediate op) .toList() // terminal operation ) Without a terminal operation, Sequences won't print anything: val seq = sequenceOf(1, 2, 3) println(seq) // prints address println(seq.toList()) // [1, 2, 3] You can't pick an index from a sequence: println(seq[0]) // throws ERROR "No get method providing array access" println(seq.toList()[0]) // 1 Sponsors Mapbox - Android developers don't have to settle for a default same-map-no-matter-what option in their Android app. Mapbox offers complete map design control, allowing you to create beautiful custom maps to meet the needs of your Android users. Check them out today at mapbox.com/android Contact @fragmentedcast [twitter.com] @donnfelker and +DonnFelker @kaushikgopal and +KaushikGopalIsMe