What's new in Android Architecture Components (Korean)

Transcript

1. What’s new in

   Architecture Components
   I/0 ’19 Extended Pangyo
   Sa-ryong Kang
   

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2. Who is this guy?
   • ҃۱ 19֙ର SW ূ૑פয
   
   • ತস ੹ޙо: ޷Ҵীࢲ ೠ ߣ, ೠҴীࢲ ف ߣ झఋ౟স ହস ҃೷
   
   • IBM iX Japanীࢲ Android/iOS ׸׼ Senior Specialist۽ Ӕޖ ઺
   
   • YouTubeীࢲ ݅աਃ!
   
   • Droid Knights 2018 - ղо উ٘۽੉٘ ূ૑פযо غ঻ਸ ٸ ইޖب ঌ۰઱
   ૑ ঋ਷ Ѫٜ
   
   • Droid Nights 2019 - Android Architecture ୨੿ܻ
   

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3. • Data Binding
   • View Binding
   • Life Cycle + ViewModel
   • WorkManager
   • Room
   • Paging
   • Navigation
   ݾର
   

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4. Data Binding
   

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5. • Annotation Processing ࢿמ ೱ࢚: 20%
   • ࠙࢑ ஹ౵ੌ நद ૑ਗ
   • Incremental Annotation Processing੄ ࣻഌ੗
   • Android Studio৬੄ োز ъച
   • XML ղਊ੄ ૊द ߈৔
   • XMLীࢲ UIਃࣗܳ ୶оೞݶ, ஹ౵ੌ হ੉ب ೙٘о ୶оؽ
   • ܻಂష݂ ӝמ੉ XMLীب ੸ਊ
   Data Binding (3.5~)
   

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6. • ஹ౵ੌ ী۞ ಴द ѐࢶ
   • 1000ѐ੄ ী۞ݫद૑ ਬഋ ୶о
   Data Binding (3.5~)
   

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7. Data Binding (3.5~)
   class MainActivity : AppCompatActivity() {
   private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
   override fun onCreate(savedInstanceState: Bundle?) {
   super.onCreate(savedInstanceState)
   setContentView(binding.root)
   }
   }
   

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8. Data Binding (3.5~)
   class MainActivity : AppCompatActivity() {
   private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
   override fun onCreate(savedInstanceState: Bundle?) {
   super.onCreate(savedInstanceState)
   setContentView(binding.root)
   }
   }
   public abstract class ActivityMainBinding extends ViewDataBinding {
   @NonNull
   public final TextView textView;
   protected ActivityMainBinding(Object _bindingComponent, View _root, int _localFieldCount,
   TextView textView) {
   super(_bindingComponent, _root, _localFieldCount);
   this.textView = textView;
   }
   ~~~~~~~~~~~~~~~
   

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9. Data Binding (3.5~)
   class MainActivity : AppCompatActivity() {
   private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
   override fun onCreate(savedInstanceState: Bundle?) {
   super.onCreate(savedInstanceState)
   setContentView(binding.root)
   }
   }
   
   
   xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   tools:context=".MainActivity">
   android:id="@+id/textView"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="Hello World!"
   app:layout_constraintBottom_toBottomOf="parent"
   app:layout_constraintLeft_toLeftOf="parent"
   app:layout_constraintRight_toRightOf="parent"
   app:layout_constraintTop_toTopOf="parent"/>
   
   
   

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10. Data Binding (3.5~)
    class MainActivity : AppCompatActivity() {
    private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(binding.root)
    binding.textView
    }
    }
    
    
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent"/>
    
    
    

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11. • DataBinding ࢎਊ੄ о੢ ௾ ೲٜ੉ ݽف ઁѢ (ই݃ب..)
    • ؀۝੄ ߡӒب ೣԋ ࣗѐؼ оמࢿ ֪റ..
    • ࠁ׮ ViewModel ׮਍ ViewModelਸ ݅٘ח ؘী ݆਷ ب਑੉ ؼ ٠
    Implication
    

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12. View Binding
    

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13. View Binding (3.6~)
    

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14. View Binding (3.6~)
    
    

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15. View Binding (3.6~)
    

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16. • DataBindingҗ੄ ഐജࢿ
    • XML ਃࣗ੄ ੽Ӕ݅ਸ ࢎਊೞҊ र׮ݶ, औѱ ViewBindingਵ۽ тইఎ ࣻ ੓਺
    • కӒ݅ ઁѢೞݶ ؽ
    • ࢎਊߨب, ޙߨب ৮੹ زੌ
    • ߈؀۽, ୊਺ بੑೠ׮ݶ XML਷ ইޖ Ѫب ࣻ੿ೡ ೙ਃ হ੉ Data Bindingҗ ڙ
    э਷ ࢶ঱ ف ઴۽ ࢎਊ оמ
    • Kotlin Extensionী ؀ೠ ೤ܻ੸ ؀উ
    View Binding (3.6~)
    

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17. • Kotlin Synthetic Extension, Butter Knifeী ؀ೠ ೤ܻ੸ ؀উ
    • Gradle Pluginী ੄೧ ௿ېझܳ ࢤࢿೞҊ ੉ח Android Studioীࢲ ಞ૘ ઺ী ੌয
    ա޲۽..
    • Compile time safety / Build speed নଃীࢲ ੉ٙ
    • Data Bindingب э਷ ݒழפ્੄ ࣻഌܳ যו ੿ب ߉ਸ ٠
    Implication
    

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18. Life Cycle + ViewModel
    

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19. View Model
    class MainViewModel : ViewModel() {
    val counter = MutableLiveData(0)
    }
    class MainActivity : AppCompatActivity() {
    private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(binding.root)
    }
    }
    

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20. View Model
    class MainViewModel : ViewModel() {
    val counter = MutableLiveData(0)
    }
    class MainActivity : AppCompatActivity() {
    private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    private val viewModel by viewModels() { }
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(binding.root)
    }
    }
    

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21. View Model
    class MainViewModel : ViewModel() {
    val counter = MutableLiveData(0)
    }
    class MainActivity : AppCompatActivity() {
    private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    private val viewModel by viewModels() { }
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(binding.root)
    viewModel.counter
    .observe(this, Observer {
    binding.textView.text = "count = $it"
    })
    }
    }
    

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22. View Model
    class MainViewModel : ViewModel() {
    val counter = MutableLiveData(0)
    }
    class MainActivity : AppCompatActivity() {
    private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    private val viewModel by viewModels() { }
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(binding.root)
    viewModel.counter
    .observe(this) {
    binding.textView.text = "count = $it"
    }
    }
    }
    lifecycle-livedata-core-ktx
    lifecycle-livedata-core-ktx
    

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23. View Model
    class MainViewModel : ViewModel() {
    val counter = MutableLiveData(0)
    }
    class MainActivity : AppCompatActivity() {
    private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    private val viewModel by viewModels() { }
    override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(binding.root)
    viewModel.counter
    .observe(this) {
    binding.textView.text = "count = $it"
    }
    binding.countButton.setOnClickListener {
    viewModel.counter.apply {
    value = value?.plus(1) ?: 1
    }
    }
    }
    }
    

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24. View Model
    override fun onSaveInstanceState(outState: Bundle) {
    super.onSaveInstanceState(outState)
    viewModel.counter.value?.also { outState.putInt("counter", it) }
    }
    override fun onRestoreInstanceState(savedInstanceState: Bundle?) {
    super.onRestoreInstanceState(savedInstanceState)
    savedInstanceState ?: return
    viewModel.counter.value = savedInstanceState.getInt("counter")
    }
    

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25. View Model
    class MainViewModel(
    handle: SavedStateHandle
    ) : ViewModel() {
    val counter: MutableLiveData =
    handle.getLiveData("counter")
    }
    class MainActivity : AppCompatActivity() {
    private val binding by lazy { ActivityMainBinding.inflate(layoutInflater) }
    private val viewModel by viewModels {
    SavedStateVMFactory(this, bundleOf("counter” to 0))
    }
    }
    

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26. • ই૒ ߓ Ҋ೐׮..
    • ࢜۽ द੘ೞח ೐۽ં౟ or ѐੋ/ࣗӏݽ ઑ૒ীח ݫܻ౟о ੓ѷਵա..
    • ӝઓ ҳഅਸ ыҊ ੓ח ҃਋, AAC ViewModel۽ ৤ѹఋঠೡ ഛҊೠ ݫܻ౟ח ই
    ૒ হח ٠
    Implication
    

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27. WorkManager
    

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28. • What is it?
    • Background processing that is deferrable, persistent, constraint-based
    and backward compatible.
    • 1.0੉ 3ਘ 1ੌ ୹द ع਺.. which means.. ೡ݆ঋ
    • 2.0ب زद ୹द ع਺.. WTF?
    Work Manager
    

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29. • On-demand Initialization (2.1.0)
    • App ௿ېझী ജ҃ ࢸ੿ ҙ۲ ղਊਸ ҳഅ
    • ੋझఢझ ஂٙ दী contextܳ ֈѹ.. ೙ਃೡ ٸী ੋझఢझо ࢤࢿ ؽ
    • Google Play Service৬੄ ా೤ (ழ߁.. २ & optional) - ҳഋ ױ݈ীࢲ੄ ࢿמ ೱ࢚
    • ഐജࢿ ѐࢶ (ongoing)
    • ӝӝী ٮܲ ز੘੄ ର੉: ࢎਊ੗о ૒੽ জਸ ઙܐೞݶ..
    • Pixel → ೐۽ࣁझ ઙܐ. যڃ ױ݈ٜ → force stop (job੉ ࢎۄઉߡܿ-0-;
    FCMب..;;;)
    Work Manager
    

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30. • Test Support
    • Robolectric Support (Available now!)
    • Unit Test Support in alpha (2.1.0): 

    TestWorkerBuilder, TestListenableWorkerBuilder
    • Foreground Support!
    • Job Scheduler۽ 10࠙ ૞ܻ স۽٘ө૑ ೡ ࣻ ੓૑݅, ӒѪࠁ׮ ӡ׮ݶ?
    • োղ ୹द ৘੿
    Work Manager
    

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31. Room
    

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32. • Coroutine ૑ਗ: Cancelableೠ ௏٘ ࢤࢿ оמ
    • Transactionب naturalೞѱ ҳഅ оמ
    • Full-text Search
    • SQLite ഛ੢ӝמ
    Room 2.1
    

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33. • RxJava ૑ਗ!
    • Ӕؘ Flowable੉ غח૑ח ࠛݺഛ
    • View ࢤࢿ оמ
    Room 2.1
    

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34. • ӒܻҊ ખ ؊ ٍীח..
    • Incremental Annotation Processing ૑ਗ
    • Many-to-many Relation ૑ਗ
    • ݃੉Ӓۨ੉࣌ਸ ࠁ׮ औѱ..
    • Coroutines Channel/Flow ૑ਗ
    Room
    

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35. Etc. : Paging & Navigation
    

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36. • Before
    • RecyclerViewী ܻझ౟ܳ lazy load ೧઱ח ۄ੉࠳۞ܻ, but..
    • Room, Realm, Retrofit ૑ਗ
    • Soon in EAP, alpha this summer
    • Built in network ૑ਗ with ী۞ ೩ٜ݂
    • ೻؊ / footer ૑ਗ
    • RxJava / Coroutines ా೤ ъച!
    Paging
    

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37. • 3/19 1.0, 2.0 ୹द
    • 2.1
    • ViewModels scoped to Navigation Graphs
    • Navigation by URI
    • Dialog
    • Future
    • Dynamic Delivery ૑ਗ
    Navigation
    

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38. Conclusion
    

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39. • ☀
    • MVVM with Data Binding
    • Coroutine
    • Redux-like architecture for Jetpack Compose
    • Many companies have already adopt it, such as Netflix
    • ⛈
    • Schedule for other libraries can be postponed, because of tough
    competition between Swift UI and Jetpack Compose.
    • Already happened last year: Some of promise in 2018 were not yet
    kept, because of AS 3.4/3.5 and R8
    Forecast (in my personal opinion)
    

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40. Thank you very much!
    

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