After I/O Kabul Android summary

Transcript

1. After I/O Kabul Kotlin First/Android Q 1
2. Who Am I? • Hadi Tok • Lead Android Developer @CitizenMe • Google Developers Expert on Android • Organizer at GDG Istanbul • https://haditok.com/ 2
3. Google I/O 3 • Organized by Google At Mountain View CA • Gathers developers from all around the world • New technologies developed by Google announced
4. Google I/O 2019 What’s new on Android 4 • Kotlin First • Coroutines first • Jetpack Compose • Dark Mode • Gesture Navigation • Security and Privacy • CameraX • ViewBindings
5. Kotlin First 5 • Kotlin became official language 2017 along with Java and C++ • KTX Libraries • IDE Support • Documentation • Samples
6. Kotlin First 6 • Kotlin became primary language 2019 over Java and C++ • Feature support • IDE Support • More Documentation • More Samples
7. How to get started with Kotlin 7 • http://try.kotlinlang.org • https://kotlinlang.org/docs/reference/ • https://codelabs.developers.google.com/android-ko tlin-fundamentals/
8. Corotutines First 8 • What are Coroutines? • Non-blocking • Asynchronous • Straightforward as plain synchronous code.
9. Corotutines First 9
10. Jetpack Coroutines support 10 • LiveData • ViewModel • WorkManager • Room
11. Jetpack Compose 11 • Jetpack Compose is an unbundled toolkit designed to simplify UI development. It combines a reactive programming model with the conciseness and ease of use of the Kotlin programming language.
12. Jetpack Compose 12 • Concise and Idiomatic Kotlin • Declarative • Compatible • Enable Beautiful Apps • Accelerate Development
13. Jetpack Compose 13
15. Dark Mode 15 • Can reduce power usage by a significant amount • Improves visibility for users with low vision and sensitive to bright light. • Easier to use a device in a low-light environment.
16. Dark Mode 16 • Can reduce power usage by a significant amount • Improves visibility for users with low vision and sensitive to bright light. • Easier to use a device in a low-light environment.
17. Dark Mode 17 • <style name="AppTheme" parent="Theme.AppCompat.DayNight"> • <style name="AppTheme" parent="Theme.MaterialComponents.DayNight">
18. Dark Mode 18 • Light - MODE_NIGHT_NO • Dark - MODE_NIGHT_YES • Set by Battery Saver - MODE_NIGHT_AUTO_BATTERY • System default - MODE_NIGHT_FOLLOW_SYSTEM
19. Dark Mode Force Dark 19 • Easy way to implement dark mode • Intellegently converts theme to dark on Android Q • android:forceDarkAllowed="true"
20. Gesture Navigation 20 • Unifies gestural navigation on Android Q • Swipe up from bottom navigates to home • Swipe left and right from edges navigates back
21. 21
22. Security&Privacy 22 • Jetpack Security Library • Location permission changes on Q • Apps won't be able to turn on/off the WiFi on Q • SYSTEM_ALERT_WINDOW permission is deprecated on Q, Use Chat bubbles instead.
23. CameraX 23 • Unifies Camera library usage • Features like Portrait, HDR, Night, and Beauty • Able to take add ons • Works on 90% of devices
24. CameraX 24 • Unifies Camera library usage • Features like Portrait, HDR, Night, and Beauty • Able to take add ons • Works on 90% of devices
25. View Bindings 25 • Similar to DataBindings • No annotation processing so faster at compile
26. Thank you Questions? 26