One question that Kaushik and I get all the time is this ... I'm starting to learn how to build Android apps, which language should I learn? Kotlin or Java? In this episode Donn answers this question and gives valid points on why both languages are valid options and why you might want to consider one over the other. He provides caveats to why you might want to use one language over another and some of the trade offs of Java and Kotlin and how they operate together. If you're wrestling with this question, this is the show for you ... Thanks to this week's sponsor: Bitrise Build amazing apps in Java, Kotlin or whatever tech you prefer and use Bitrise to automate your Android integration, build, test and deploy process quickly and easily. Sign up for an exquisite pair of Bitrise Branded Socks, here! https://go.bitrise.io/fragmented Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

Kaushik is back in this weeks podcast. 🎉 Donn and Kaushik talk about testing RxJava streams with a Kotlin extension method and how and when to test various scenarios. Donn talks about his thoughs on the Testing Pyramid and why he think's its incorrect and how you can help shift your thinking in regards to it. They then talk about IDE themes and how the theme can help you with your day to day development and more. They wrap up with some talk about devleoping on Mac's vs Windows and Linux. We hope you enjoy ... Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

This week Donn talks about what pattern you should use when developing your application. Is it MVP? MVVM? Mabye MVI? Perhaps it's something else. Find out in this episode. We hope you enjoy ... Shownotes Patters MVP Pattern MVVM Pattern MVI Pattern MvRx Clean Arhictecture Mocking Out the API in Espresso MockWebServer Course WireMock Android Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

In this episode Donn and Kaushik sit down with Instacart Engineer Colin White to discuss a new image library he has created called Coil. Coil is a Kotlin-first image library that focuses on ease of use, simplicity and extensibility. In this episode we ask him the question you're probably wondering ... "Why create an image library, isn't this a solved problem already?" and then move onto the details of how the library works, and what it offers developers. From Donn's perspective - It's an interesting library and gives you what you need with minimal footprint but offers you the extensibility that you'd want in the future. Its a good balance of "just enough" and "I might need this". Enjoy Show Notes Coil library Colin's Twitter Colin's Website Introducing Coil: Kotlin-first image loading on Android Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

This week Donn and Kaushik talk to Leland Richardson from the Android team at Google about Jetpack Compose. Jetpack Compose is declarative component-based UI runtime for Android. With compose you can build your UI with functions in Kotlin to easily "compose" what your UI would look like. We dive deep in this episode. We talk about the background and influence React had on the project, we dive deep into some of the decisions made regarding the library and much much more... We hope you enjoy ... Shownotes Jetpack Compose First Principels React, Meet Compose Slides Jetpack Compose Android Dev Docs Leland's Contact info: Twitter Website Fragmented Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

In this episode, Donn talks about public speaking and how it can help you grow your career. He dives in by telling a story of his first speaking engagement and how he was riddled with fear, insecurity, doubt and anxiety. He then talks about why speaking can help you grow your career and life leaps and bounds. He wraps up with possible things you can speak about when starting out as well as where you can get your break into the speaking circuit. Shownotes Fragmented #154 - Developer Growth: Start Writing The Single Best Thing You Can Do For Your Career Sponsor This episode is sponsored by Instabug. Squash bugs 🐞 in less than a minute with Instabug! Special offer for all listeners, go to instabug.com/fragmented Signup for free, install the SDK, and you will get Instabug's brand new t-shirt! Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

Marcel Schnelle joins Donn in this episode to talk about how to get your application under test and some steps to go from scared to confident in your testing process. The second half of the show they dive in deep to JUnit 5 and its new features. JUnit 5 is backwards compatible with JUnit 4 and offers a slew of new features and extensibility points which make the framework much more appealing going forward. We're convinced you'll enjoy this episode and leave wanting to get your app under test - even more than it already is. Enjoy. Shownotes Caster.IO JUnit 5 Course JUnit 5 Android Plugin JUnit5 User Guide Danny Preussler: The next gen of testing - Droidcon NYC 2018 (YouTube) Marc Philipp: JUnit 5 Extensions - Joker 2017 (YouTube) Spek Framework Testing for Kotlin Get ahold of Marcel: Marcel Schnelle Twitter Marcel Schnelle Website Sponsors 🙏 sentry.io - Your code is broken. Let’s fix it together - https://sentry.io/for/android/ Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

In this episode, Donn continues his talks about Kotlin Lambda Expressions. He explains how you can use lambda expressions as function parameters and as return types for functions. This is a very dense episode - if you get lost look at the code snippets below or view on them on fragmentedpodcast.com class LogReader { fun processFile(file: File, processLine: (String) -> Unit = {}) { file.forEachLine { println("Number of Chars: ${it.length}") processLine(it) println("Line Done Processing") } } fun processFileWithHandlers(file: File, logHandler: LogHandler) { file.forEachLine { println("Start of Processing") logHandler.handleLine().forEach { handler -> handler(it) } println("Line Done Processing") } } } interface LogHandler { fun handleLine(): List<(String) -> Unit> } val reader = LogReader() val textFile = File("/Users/donnfelker/scratch/lorem.txt") // Process with single lambda reader.processFile(textFile, { println("First 10 Chars: ${it.substring(0..9)}") }) val logHandler = object : LogHandler { override fun handleLine(): List<(String) -> Unit> { return listOf<(String) -> Unit>( { line -> println("${line.substring(0, 1)}") }, { line -> println("${line.substring(2, 4)}") }, { line -> println("${line.substring(5, 10)}") } ) } } // Process with multipe handlers via the logHandler reader.processFileWithHandlers(textFile, logHandler) Sponsors 🙏 sentry.io - Your code is broken. Let’s fix it together - https://sentry.io/for/android/ Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

Donn sits down with Buffer Android Lead, Joe Birch. Joe is a GDE for Android, Google Actions, Flutter and Google Pay. In this episode Donn and Joe talk about Clean Architecture, what it is, and why you might want to use it. They break down the concept of what Clean Architecture is in a manner that is easy for even a beginner to understand. Enjoy. Shownotes Caster.IO Course [Uncle Bob Clean Arch]https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html Buffer Clean Architecture BoilerPlate Chord Assist Guitar Get ahold of Joe: Joe Birch Twitter Joe Birch Instagram Sponsors 🙏 sentry.io - Your code is broken. Let’s fix it together - https://sentry.io/for/android/ Contact Discord chat or @fragmentedcast or our Youtube channel @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)

Kaushik decides to hit record on a skype call he has with friend of the show Jesse Wilson. They start off by discussing building features across different platforms today. Jesse talks about a clever mechanism of using javascript to change logic on the fly across the Square cash app, that's worked out pretty well. They then go on to discussing how one can try and converge across platforms in terms of business logic, architecture, naming etc. They then wind it down by discussing the state of Flutter, Kotlin multiplatform and reaching the promised land. Enjoy. Shownotes objc.io Kevin Galligan Alec Strong Egor Andreevich Sponsors 🙏 Instabug Instabug completely takes care of your beta testing and user feedback process so you can debug, fix, and improve your app quality faster. They're giving Fragmented listeners a special bonus when you go to instabug.com/fragmented - Signup for free, install the SDK, and you will get Instabug's brand new t-shirt Contact @jessewilson @chrismlacy @donnfelker and donnfelker (on Instagram) @kaushikgopal and kaushikgopal (on Instagram)