ininmm

override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        val view = inflater.inflate(R.layout.tasks_frag, container, false)
        viewDataBinding = TaskdetailFragBinding.bind(view).apply {
            viewmodel = viewModel
        }
        

ininmm

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        viewDataBinding = TasksFragBinding.inflate(inflater, container, false).apply {
            viewmodel = viewModel
        }
        ...
        ...
        return viewDataBinding.root

ininmm

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:id="@id/tasksFragment"
        android:icon="@drawable/ic_list"
        android:title="@string/list_title"/>

    <item
        android:id="@id/statisticsFragment"

ininmm

class TasksRepository (
    private val tasksRemoteDataSource: TasksDataSource,
    private val tasksLocalDataSource: TasksDataSource,
    private val ioDispatcher: CoroutineDispatcher = Dispatchers.IO
) : ITasksRepository {

    private var cachedTasks: ConcurrentMap<String, Task>? = null

    override suspend fun getTasks(forceUpdate: Boolean): Result<List<Task>> {
        wrapEspressoIdlingResource {

ininmm

class TasksLocalDataSource @Inject constructor(
    private val tasksDao: TasksDao,
    private val ioDispatcher: CoroutineDispatcher = Dispatchers.IO
) : TasksDataSource {
    override suspend fun getTasks(): Result<List<Task>> = withContext(ioDispatcher) {
        return@withContext try {
            Success(tasksDao.getTasks())
        } catch (e: Exception) {
            e.printStackTrace()
            Error(e)

ininmm

class ViewModel {

    fun getToken(): Token {
        // 做一些 API 耗時操作
        return token 請求 access token
    }
    
    fun verify(token, userName): Boolean {
        // 做一些 API 耗時操作
        return result // 登入成功或失敗

ininmm

fun getTokenAsync(action: (Token) -> Unit) {
    ......
}

fun verifyAsync(
    token: Token,
    userName: String,
    action: (Boolean) -> Unit
) {
    ......

ininmm

fun getToken(): Observable<Token> { ...... }

fun verify(userName): Observable<Boolean> {
    return getToken()
            .flatMap { token ->
                ......
            }
}

fun requestAndSaveUserData(userName: String): Observable<Result> {

ininmm

suspend fun getToken(): Token { ...... }

suspend fun verify(token, userName: String): Boolean { ...... }

suspend fun requestAndSaveUserData(userName: String): Result { ...... }

fun login(userName: String) {
    GlobalScope.launch {
        try {
            val token = getToken()

ininmm

class MainActivity : AppCompatActivity(), CoroutineScope {
    
    override val coroutineContext: CoroutineContext
        get() = job
        
    val job = Job() // 默認使用預設 thread

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)