Anko Superpowers

Transcript

2. ENZO LIZAMA PAREDES @enzoftware
3. KOTLIN?
4. Android is stuck in Java 6 purgatory. https://twitter.com/donnfelker
6. compile "org.jetbrains.anko:anko-sdk15:$anko_version" compile "org.jetbrains.anko:anko-support-v4:$anko_version" compile 'org.jetbrains.anko:anko-appcompat-v7:0.9.1'
7. HELLO WORLD
8. verticalLayout { val name = editText() button("Say Hello") { onClick { toast("Hello, ${name.text}!")} } }
9. <LinearLayout xmlns:android="http://schemas.android.co m/apk/res/android" android:layout_height="match_parent" android:layout_width="match_parent"> <EditText android:id="@+id/todo_title" android:layout_width="match_parent" android:layout_heigh="wrap_content" android:hint="@string/title_hint" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/add_todo" /> </LinearLayout> verticalLayout { var title = editText { id = R.id.todo_title hintResource = R.string.title_hint } button { textResource = R.string.add_todo onClick { view -> { // do something here } } } }
10. ANKO COMMONS
11. dependencies { compile "org.jetbrains.anko:anko-commons:$anko_version" }
12. INTENTS Normal: val intent = Intent(this, SomeOtherActivity::class.java) intent.putExtra("id", 5) startActivity(intent) Anko : startActivity<SomeOtherActivity>("id" to 5) // startActivity<SomeOtherActivity>("id" to 5, "name" to "John")
13. Functions for Implicit Intents
14. Dialogs Toast : toast(R.string.message) longToast("Wow, such duration")
15. SnackBar : snackbar(view, "Hi there!") snackbar(view, R.string.message)
16. Alerts : alert("Hi, I'm Roy", "Have you tried turning it off and on again?") { yesButton { toast("Oh…") } noButton {} }.show()
18. Selector : val countries = listOf("Russia", "USA", "Japan", "Australia") selector("Where are you from?", countries, { dialogInterface, i -> toast("So you're living in ${countries[i]}, right?") })
20. Others ... Logging Misc
21. Anko Layouts
22. • rendered by creating view object in memory from XML file • create view objects • find views by id with findViewById
23. • rendered by creating view object in memory from XML file • create view objects • find views by id with findViewById
24. PERFORMANCE
25. https://github.com/frogermcs/AndroidDevMetrics
27. THE DEMO https://github.com/enzoftware/anko-example
28. Also...
31. “Anko offers several solutions to the traditional way of building layouts in XML. It could improve your MVVM setup, or you could make your layouts more dynamic by adding some logic. And this all for a very small cost, considering all the extreme effort we do for clean and high performing apps.” -Simon Vergauwen https://medium.com/@vergauwen.simon
32. https://www.youtube.com/playlist?list=PLQ176F UIyIUY6UK1cgVsbdPYA3X5WLam5
33. @enzoftware