chao2zhang

class LoggingLiveDataMethodVisitor(
    private val methodVisitor: MethodVisitor
) : MethodVisitor(ASM9, methodVisitor) {

    override fun visitMethodInsn(
        opcode: Int,
        owner: String?,
        name: String?,
        descriptor: String?,
        isInterface: Boolean

chao2zhang

class LoggingLiveDataClassVisitor(
    private val classVisitor: ClassVisitor
) : ClassVisitor(ASM9, classVisitor) {

    override fun visitMethod(
        access: Int,
        name: String?,
        descriptor: String?,
        signature: String?,
        exceptions: Array<out String>?

chao2zhang

val classReader = ClassReader(inputBytes)
val classWriter = ClassWriter(classReader, 0)
val classVisitor = LoggingLiveDataClassVisitor(classWriter)
classReader.accept(classVisitor, 0)
outputBytes = classWriter.toByteArray()

chao2zhang

class LoggingLiveDataTransform(private val logger: Logger) : Transform() {

    override fun getName(): String = javaClass.simpleName

    override fun applyToVariant(variant: VariantInfo) = variant.isDebuggable

    override fun getInputTypes(): Set<QualifiedContent.ContentType> =
        setOf(QualifiedContent.DefaultContentType.CLASSES)

    override fun getScopes(): MutableSet<in QualifiedContent.Scope> =

chao2zhang

project.plugins.withType(AppPlugin::class.java) { plugin ->
  project.extensions.configure(AppExtension::class.java) { appExtension ->
    appExtension.registerTransform(LoggingLiveDataTransform(project.logger))
  }
}

chao2zhang

viewModel.currentTime.observe(this) {
    Log.d("LiveDataDebug", "observer called")
    binding.time.text = it.toString()
}

chao2zhang

@HiltViewModel
class HomeViewModel @Inject constructor(
  private val redditRepository: RedditRepository
) : ViewModel() {

  private val _reddits: MutableLiveData<RedditListing> = MutableLiveData()
  val reddits: LiveData<RedditListing> = _reddits

  init {
    viewModelScope.launch {

chao2zhang

@AndroidEntryPoint
class HomeFragment : Fragment() {

  private val homeViewModel by viewModels<HomeViewModel>()

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    Log.i(Constants.FLOW_TAG, "Fragment onCreate...")
  }

chao2zhang

@HiltViewModel
class HomeViewModel @Inject constructor(
  private val redditRepository: RedditRepository
) : ViewModel() {

  val reddits: LiveData<RedditListing>
    get() = redditRepository.topReddits.asLiveData(context = Dispatchers.IO)
}

chao2zhang

class RedditRepository @Inject constructor(private val redditService: RedditService) {

    val topReddits: Flow<RedditListing> = flow {
        Log.i(FLOW_TAG, "flow running...")
        emit(redditService.top())
    }
}