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After I/O Kabul Android summary
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Hadi Tok
June 20, 2019
Technology
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After I/O Kabul Android summary
Hadi Tok
June 20, 2019
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Transcript
After I/O Kabul Kotlin First/Android Q 1
Who Am I? • Hadi Tok • Lead Android Developer
@CitizenMe • Google Developers Expert on Android • Organizer at GDG Istanbul • https://haditok.com/ 2
Google I/O 3 • Organized by Google At Mountain View
CA • Gathers developers from all around the world • New technologies developed by Google announced
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
Kotlin First 5 • Kotlin became official language 2017 along
with Java and C++ • KTX Libraries • IDE Support • Documentation • Samples
Kotlin First 6 • Kotlin became primary language 2019 over
Java and C++ • Feature support • IDE Support • More Documentation • More Samples
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/
Corotutines First 8 • What are Coroutines? • Non-blocking •
Asynchronous • Straightforward as plain synchronous code.
Corotutines First 9
Jetpack Coroutines support 10 • LiveData • ViewModel • WorkManager
• Room
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.
Jetpack Compose 12 • Concise and Idiomatic Kotlin • Declarative
• Compatible • Enable Beautiful Apps • Accelerate Development
Jetpack Compose 13
None
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.
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.
Dark Mode 17 • <style name="AppTheme" parent="Theme.AppCompat.DayNight"> • <style name="AppTheme"
parent="Theme.MaterialComponents.DayNight">
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
Dark Mode Force Dark 19 • Easy way to implement
dark mode • Intellegently converts theme to dark on Android Q • android:forceDarkAllowed="true"
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
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.
CameraX 23 • Unifies Camera library usage • Features like
Portrait, HDR, Night, and Beauty • Able to take add ons • Works on 90% of devices
CameraX 24 • Unifies Camera library usage • Features like
Portrait, HDR, Night, and Beauty • Able to take add ons • Works on 90% of devices
View Bindings 25 • Similar to DataBindings • No annotation
processing so faster at compile
Thank you Questions? 26