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Clean Architecture (in Android) Revised

Sunghyun Hwang
April 05, 2019
Programming
1.1k
1

Clean Architecture (in Android) Revised

[Droid Knights 2019] 행사에서 발표한 [Clean Architecture (in Android) Revised] 발표 자료입니다. 이전에 발표했던 [Clean Architecture in Android] 발표를 2019년의 시각으로 재구성을 시도합니다.

Sunghyun Hwang

April 05, 2019

Transcript

91 slides

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  51. class MainActivity : AppCompatActivity(), TodoGatewayImpl, TodoDaoProvider, TodosView { override val

    compositeDisposable: CompositeDisposable get() = CompositeDisposable() override val todoDao: TodoDao get() = AppDatabase.getInstance(this).todosDao() override fun renderTodos(vm: TodosViewModel) { someTextView.text = vm.statusDescription } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) setSupportActionBar(toolbar) fab.setOnClickListener { handleAddTodo(Schedulers.io(), AndroidSchedulers.mainThread()) } handleStart(Schedulers.io(), AndroidSchedulers.mainThread()) } override fun onDestroy() { super.onDestroy() handleDestroy() } }

  52. class MainActivity : AppCompatActivity(), TodoGatewayImpl, TodoDaoProvider, TodosView { override val

    compositeDisposable: CompositeDisposable get() = CompositeDisposable() override val todoDao: TodoDao get() = AppDatabase.getInstance(this).todosDao() override fun renderTodos(vm: TodosViewModel) { someTextView.text = vm.statusDescription } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) setSupportActionBar(toolbar) fab.setOnClickListener { handleAddTodo(Schedulers.io(), AndroidSchedulers.mainThread()) } handleStart(Schedulers.io(), AndroidSchedulers.mainThread()) } override fun onDestroy() { super.onDestroy() handleDestroy() } }

  53. class MainActivity : AppCompatActivity(), TodoGatewayImpl, TodoDaoProvider, TodosView { override val

    compositeDisposable: CompositeDisposable get() = CompositeDisposable() override val todoDao: TodoDao get() = AppDatabase.getInstance(this).todosDao() override fun renderTodos(vm: TodosViewModel) { someTextView.text = vm.statusDescription } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) setSupportActionBar(toolbar) fab.setOnClickListener { handleAddTodo(Schedulers.io(), AndroidSchedulers.mainThread()) } handleStart(Schedulers.io(), AndroidSchedulers.mainThread()) } override fun onDestroy() { super.onDestroy() handleDestroy() } }

  54. class MainActivity : AppCompatActivity(), TodoGatewayImpl, TodoDaoProvider, TodosView { override val

    compositeDisposable: CompositeDisposable get() = CompositeDisposable() override val todoDao: TodoDao get() = AppDatabase.getInstance(this).todosDao() override fun renderTodos(vm: TodosViewModel) { someTextView.text = vm.statusDescription } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) setSupportActionBar(toolbar) fab.setOnClickListener { handleAddTodo(Schedulers.io(), AndroidSchedulers.mainThread()) } handleStart(Schedulers.io(), AndroidSchedulers.mainThread()) } override fun onDestroy() { super.onDestroy() handleDestroy() } }

  55. class MainActivity : AppCompatActivity(), TodoGatewayImpl, TodoDaoProvider, TodosView { override val

    compositeDisposable: CompositeDisposable get() = CompositeDisposable() override val todoDao: TodoDao get() = AppDatabase.getInstance(this).todosDao() override fun renderTodos(vm: TodosViewModel) { someTextView.text = vm.statusDescription } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) setSupportActionBar(toolbar) fab.setOnClickListener { handleAddTodo(Schedulers.io(), AndroidSchedulers.mainThread()) } handleStart(Schedulers.io(), AndroidSchedulers.mainThread()) } override fun onDestroy() { super.onDestroy() handleDestroy() } }

  56. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } fun handleAddTodo(sub: Scheduler, ob: Scheduler) { val d = addTodo(requestAddTodo(LocalDateTime.now())) .flatMap { getTodos() } .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } } fun handleDestroy() { compositeDisposable.dispose() }

  57. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } fun handleAddTodo(sub: Scheduler, ob: Scheduler) { val d = addTodo(requestAddTodo(LocalDateTime.now())) .flatMap { getTodos() } .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } } fun handleDestroy() { compositeDisposable.dispose() }

  58. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } fun handleAddTodo(sub: Scheduler, ob: Scheduler) { val d = addTodo(requestAddTodo(LocalDateTime.now())) .flatMap { getTodos() } .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } } fun handleDestroy() { compositeDisposable.dispose() } import io.reactivex.Scheduler import io.reactivex.disposables.CompositeDisposable import java.time.LocalDateTime

  59. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } fun handleAddTodo(sub: Scheduler, ob: Scheduler) { val d = addTodo(requestAddTodo(LocalDateTime.now())) .flatMap { getTodos() } .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } } fun handleDestroy() { compositeDisposable.dispose() }

  60. interface GetTodos : TodoGateway, TodoServices { fun getTodos(): Single<GetTodosResult> =

    get().map { with(calculateProgress(it)) { GetTodosResult( it, this.first, this.second, this.third ) } } }

  61. interface TodoServices { fun calculateProgress(todos: List<Todo>): Triple<Int, Int, Float> {

    val nrOfDone = todos.count { it.done } val nrOfTotal = todos.count() return Triple(nrOfDone, nrOfTotal, nrOfDone / nrOfTotal.toFloat()) } } interface GetTodos : TodoGateway, TodoServices { fun getTodos(): Single<GetTodosResult> = get().map { with(calculateProgress(it)) { GetTodosResult( it, this.first, this.second, this.third ) } } }

  62. interface TodoServices { fun calculateProgress(todos: List<Todo>): Triple<Int, Int, Float> {

    val nrOfDone = todos.count { it.done } val nrOfTotal = todos.count() return Triple(nrOfDone, nrOfTotal, nrOfDone / nrOfTotal.toFloat()) } } interface GetTodos : TodoGateway, TodoServices { fun getTodos(): Single<GetTodosResult> = get().map { with(calculateProgress(it)) { GetTodosResult( it, this.first, this.second, this.third ) } } } data class Todo(val id: Long, val description: String, val done: Boolean)

  63. interface TodoServices { fun calculateProgress(todos: List<Todo>): Triple<Int, Int, Float> {

    val nrOfDone = todos.count { it.done } val nrOfTotal = todos.count() return Triple(nrOfDone, nrOfTotal, nrOfDone / nrOfTotal.toFloat()) } } interface GetTodos : TodoGateway, TodoServices { fun getTodos(): Single<GetTodosResult> = get().map { with(calculateProgress(it)) { GetTodosResult( it, this.first, this.second, this.third ) } } } data class Todo(val id: Long, val description: String, val done: Boolean)

  64. interface GetTodos : TodoGateway, TodoServices { fun getTodos(): Single<GetTodosResult> =

    get().map { with(calculateProgress(it)) { GetTodosResult( it, this.first, this.second, this.third ) } } } interface TodoGateway { fun get(): Single<List<Todo>> fun get(id: Int): Maybe<Todo> fun add(description: String, done: Boolean): Single<Todo> }

  65. class MainActivity : AppCompatActivity(), TodoGatewayImpl, TodoDaoProvider, TodosView { override val

    compositeDisposable: CompositeDisposable get() = CompositeDisposable() override val todoDao: TodoDao get() = AppDatabase.getInstance(this).todosDao() override fun renderTodos(vm: TodosViewModel) { someTextView.text = vm.statusDescription } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) setSupportActionBar(toolbar) fab.setOnClickListener { handleAddTodo(Schedulers.io(), AndroidSchedulers.mainThread()) } handleStart(Schedulers.io(), AndroidSchedulers.mainThread()) } override fun onDestroy() { super.onDestroy() handleDestroy() } }

  66. interface TodoGatewayImpl : TodoGateway, TodoDaoProvider { private fun convert(d: TodoDataModel):

    Todo = Todo(d.id!!, d.description, d.done) override fun get(): Single<List<Todo>> = todoDao.get().map { it.map(::convert) } override fun get(id: Int): Maybe<Todo> = todoDao.get(id).map(::convert) override fun add(description: String, done: Boolean): Single<Todo> = todoDao.insert(TodoDataModel(null, description, done)).map { id -> Todo(id, description, done) } }

  67. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } }

  68. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } }

  69. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } }

  70. interface TodosView : AddTodo, GetTodos, TodosPresenter, TodosController { val compositeDisposable:

    CompositeDisposable fun renderTodos(vm: TodosViewModel) fun handleStart(sub: Scheduler, ob: Scheduler) { val d = getTodos() .subscribeOn(sub) .observeOn(ob) .subscribe { r -> renderTodos( presentTodos(r) ) } compositeDisposable.add(d) } }

  71. interface TodosPresenter { fun presentTodos(result: GetTodosResult): TodosViewModel = TodosViewModel( result.todos.map

    { TodoViewModel(it.done, it.description.take(maxDescLength)) }, "${result.nrOfDone} / ${result.nrOfTotal}" ) companion object { private const val maxDescLength = 20 } }

  72. class MainActivity : AppCompatActivity(), TodoGatewayImpl, TodoDaoProvider, TodosView { override fun

    renderTodos(vm: TodosViewModel) { someTextView.text = vm.statusDescription } }

  73. interface TodosController { fun requestAddTodo(dt: LocalDateTime): AddTodoRequest = AddTodoRequest(dt.format(dtFormat), false)

    companion object { private val dtFormat = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss") } }

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