Android Networking: Fundamentals

Sep 6 2022 · Kotlin 1.6, Android 12, Android Studio Chipmunk | 2021.2.1 Patch 1

Part 1: Learn About HTTP & Threading

08. Challenge: Request & Parse Data

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Notes: 08. Challenge: Request & Parse Data

The student materials have been reviewed and are updated as of July 2022.

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To help you get a good understanding of Gson, parsing using libraries, and to repeat what you’ve learned about making requests using the HttpURLConnection, I’ve prepared a fun challenge for you!

private val networkStatusChecker by lazy {
networkStatusChecker.performIfConnectedToInternet {
  activity?.runOnUiThread {
fun completeTask(taskId: String, onTaskCompleted: (Throwable?) -> Unit) { // added task ID
    Thread(Runnable {
      val connection = URL("$BASE_URL/api/note?id=$taskId").openConnection() as HttpURLConnection
  val connection = URL(
  ).openConnection() as HttpURLConnection
Thread(Runnable {
  val connection = URL(
  ).openConnection() as HttpURLConnection

  connection.requestMethod = "POST"
  connection.setRequestProperty("Content-Type", "application/json")
  connection.setRequestProperty("Accept", "application/json")
  connection.setRequestProperty("Authorization", App.getToken())
  connection.readTimeout = 10000
  connection.connectTimeout = 10000
  connection.doOutput = true
  connection.doInput = true

  try {
    val reader = InputStreamReader(connection.inputStream)

    reader.use { input ->
      val response = StringBuilder()
      val bufferedReader = BufferedReader(input)

      bufferedReader.useLines { lines ->
        lines.forEach {

  } catch (error: Throwable) {

val unfinishedTasks = tasksResponse.notes.filter { !it.isCompleted }

onTasksReceived(unfinishedTasks, null)