Droidcon Online 2020 quick summary

This is a quick summary of interesting talk I visited during Droidcon Online 2020. This year the conference was different - due to covid-19. Nevertheless there were some thing worth mentioning!

Transcript

1. OCTOBER 19, 2020 Quick conference summary Droidcon 2020 Bartosz Kosarzycki @bkosarzycki
2. #SECU #LANG #JETPACK @bkosarzycki #UI #BACKEND #LIBRARY #OTHER #SDK
3. @bkosarzycki KOTLIN JETPACK Flutter PRs / Digital Nomad / Developer life etc. reactive programming / coroutines Security Compose Word cloud – Droidcon 2020
4. #JETPACK Jetpack navigation - what benefits jetpack navigation gives us for multi- module projects Tahsin Dane Ahmet Safa Orhan @bkosarzycki
5. Jetpack navigation – dynamic feature navigation https://developer.android.com/guide/navig ation/navigation-dynamic https://medium.com/google-developer- experts/exploring-dynamic-feature- navigation-on-android-c803bdbbca9b - uses Android App Bundles - reduces initial download size of the app - "Play feature Delivery" (link) - download feature modules on demand @bkosarzycki
6. SplitInstallRequest .newBuilder() .addModule("pictureMessages") .build() splitInstallManager .startInstall(request) .addOnSuccessListener { sessionId -> ... } .addOnFailureListener { exception -> ... } splitInstallManager .deferredInstall(listOf("promotionalFilters")) Jetpack navigation – dynamic feature navigation @bkosarzycki
7. - translates INT resource ids into human-readable @bkosarzycki
8. http://goo.gle/compose-samples https://developer.android.com/jetpack/compose/testing #JETPACK Jetpack compose – samples & testing @bkosarzycki
9. @bkosarzycki #UI
10. #BACKEND @bkosarzycki KTOR - async microservices, web-applications
11. #BACKEND @bkosarzycki
12. #BACKEND @bkosarzycki
13. #BACKEND @bkosarzycki
14. #BACKEND @bkosarzycki
15. @bkosarzycki #LIBRARY Dagger Hilt
16. @bkosarzycki #LIBRARY Dagger Hilt – Service locator vs Dependency injection
17. @bkosarzycki #LIBRARY Dagger Hilt
18. @bkosarzycki #LIBRARY
19. @bkosarzycki #LIBRARY Dagger Hilt
20. Code review - Goce Anastasovski #OTHER @bkosarzycki
21. Droidcon Keynote – modern Android / Romain Guy, Chet Haase #OTHER @bkosarzycki
22. Keynote – modern Android / Romain Guy Chet Haase #OTHER @bkosarzycki
23. Keynote – modern Android / Romain Guy Chet Haase #OTHER @bkosarzycki
24. Keynote – modern Android / Romain Guy Chet Haase #OTHER @bkosarzycki
25. CameraX #OTHER @bkosarzycki
26. Flipper – Maksim Turaev #OTHER @bkosarzycki
27. Kotlin multiplatfom – real world examples & performance analysis @bkosarzycki #LANG - ups & downs of kotlin-multiplatform development
28. Kotlin multiplatfom – real world examples & performance analysis @bkosarzycki #LANG
29. Kotlin coroutines – transition & interoperability with rxjava @bkosarzycki #LIBRARY - blog: kotlinx-coroutines-rx2 - when migrating from rxjava (project refactoring) - when you want to use Kotlin coroutines in Java (cannot [yet] be used directly)
30. Kotlin coroutines – transition & interoperability with rxjava @bkosarzycki #LIBRARY
31. Kotlin coroutines – transition & interoperability with rxjava @bkosarzycki #LIBRARY
32. Kotlin coroutines – transition & interoperability with rxjava @bkosarzycki #LIBRARY
33. Kotlin coroutines – transition & interoperability with rxjava @bkosarzycki #LIBRARY
34. Kotlin coroutines – transition & interoperability with rxjava @bkosarzycki #LIBRARY Structured concurrency is a programming paradigm aimed at improving the clarity, quality, and development time of a computer program by using a structured approach to concurrent programming. The core concept is the encapsulation of concurrent threads of execution (here encompassing kernel and userland threads and processes) by way of control flow constructs that have clear entry and exit points and that ensure all spawned threads have completed before exit. The concept is analogous to structured programming, which introduced control flow constructs that encapsulated sequential statements and subroutines. Such encapsulation allows errors in concurrent threads to be propagated to the control structure's parent scope and managed by the native error handling mechanisms of each particular computer language. It allows control flow to remain readily evident by the structure of the source code despite the presence of concurrency. To be effective, this model must be applied consistently throughout all levels of the program-- otherwise concurrent threads may leak out, become orphaned, or fail to have runtime errors correctly propagated.
35. Android App Bundles – required for new apps on Google Play #SDK @bkosarzycki
36. Android App Bundles – required for new apps on Google Play #SDK @bkosarzycki
37. Android App Bundles – required for new apps on Google Play #SDK @bkosarzycki
38. Google Compose – examples from Chris Banes #JETPACK @bkosarzycki
39. Coroutine exception handling @bkosarzycki #LANG
40. Coroutine exception handling @bkosarzycki #LANG
41. Coroutine exception handling @bkosarzycki #LANG
42. Coroutine exception handling @bkosarzycki #LANG
43. Coroutine exception handling @bkosarzycki #LANG
44. Coroutine exception handling @bkosarzycki #LANG
45. Coroutine exception handling @bkosarzycki #LANG
46. Coroutine exception handling @bkosarzycki #LANG
47. Coroutine exception handling @bkosarzycki #LANG
48. Coroutine exception handling @bkosarzycki #LANG
49. Coroutine exception handling @bkosarzycki #LANG
50. Coroutine exception handling @bkosarzycki #LANG
51. https://dev.to/kpgalligan/series/3739 https://github.com/touchlab/KNConcurrencySamples Practical Kotlin Native Concurrency Series https://dev.to/touchlab #LANG @bkosarzycki Droidcon NYC in Kotlin multiplatform - source code + live coding LINK Kotlin multiplatform - TOUCHLAB - app development, workshops, trainings
52. #SECU ASK QUESTIONS: https://community.guardsquare.com/ @bkosarzycki Effects of Kotlin on byte code & app security - We've extended our open source code optimizer ProGuard and our protection software DexGuard to fully support Kotlin - new open source tool to view the Kotlin metadata hiding inside your apps
53. #SECU ASK QUESTIONS: https://community.guardsquare.com/ @bkosarzycki Effects of Kotlin on byte code & app security - example of DexGuard removing kotlin compiler metadata for enhanced security
54. https://android-developers.googleblog.com/2020/09/prefer- storing-data-with-jetpack.html Jetpack DataStore – replaces Android SharedPrefs - (Y) async access via coroutines Flow - (X) no synchronous access - has transactions - data migration from SharedPrefs is possible Coroutines flow #JETPACK Jetpack DataStore Google DataStore CodeLab - https://codelabs.developers.google.com/codelabs/android- preferences-datastore/#0 https://youtu.be/lKOsI4gh9Z8?t=44 @bkosarzycki
55. #JETPACK @bkosarzycki
56. #LANG https://www.youtube.com/watch?v=FRCASfAMXoQ - Google is full-in Kotlin for Android - docs & trainings are in preparation - 70% of pro-devs use Kotlin on Android Kotlin 1.4 Live Online event – October 12-15, 2020 @bkosarzycki
57. #LANG @bkosarzycki
58. #LANG @bkosarzycki
59. THANK YOU Bartosz Kosarzycki @bkosarzycki bartosz.kosarzycki@vimncontractor.com https://twitter.com/bkosarzycki