robertlevonyan

@Database(entities = [RoomMovie::class], version = 1) // an array with entites and the current db version
@TypeConverters(value = [DateTypeConverter::class]) // an array of all type converters
abstract class AppDatabase : RoomDatabase() {
  abstract fun movieDao(): MovieDao

  companion object {
    @Volatile
    private var instance: AppDatabase? = null

    fun getInstance(context: Context): AppDatabase =

robertlevonyan

@Dao
interface MovieDao {
  @Insert(onConflict = OnConflictStrategy.REPLACE)
  suspend fun saveMovies(vararg movies: RoomMovie)

  @Query("SELECT * FROM RoomMovie")
  fun getMovies(): Flow<List<RoomMovie>>
}

robertlevonyan

// binding is a viewBinding instance
binding.rvSentence.setOnDragListener(
  DropListener {
    wordsAdapter.removeItem(selectedWord) // remove dropped word from word box
    sentenceAdapter.addItem(selectedWord) // add dropped word to sentence
  }
)

robertlevonyan

class DropListener(private val onDrop: () -> Unit) : View.OnDragListener {
  override fun onDrag(view: View, dragEvent: DragEvent): Boolean {
    when (dragEvent.action) {
      // when item has been dropped, notify about it
      DragEvent.ACTION_DROP -> onDrop()
    }

    return true
  }
}

robertlevonyan

itemView.setOnLongClickListener { view ->
  val data = ClipData.newPlainText("", word)
  val shadowBuilder = View.DragShadowBuilder(view)
  if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
    view.startDragAndDrop(data, shadowBuilder, view, 0)
  } else {
    view.startDrag(data, shadowBuilder, view, 0)
  }
  true
}

robertlevonyan

<androidx.constraintlayout.widget.ConstraintLayout 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"
  android:background="@drawable/bg_gradient"
  tools:context=".MainActivity">

  <androidx.cardview.widget.CardView
    android:id="@+id/rvSentenceCard"

robertlevonyan

class HeadsetConnectionReceiver(private val actionPlugged: (Boolean) -> Unit) : BroadcastReceiver() {
  override fun onReceive(context: Context?, intent: Intent?) {
    intent?.run {
      if (Intent.ACTION_HEADSET_PLUG == action) {
        when (getIntExtra("state", -1)) {
          0 -> actionPlugged(false)
          1 -> actionPlugged(true)
        }
      }
    }

robertlevonyan

@ExperimentalCoroutinesApi
fun notifyNetwork() = channelFlow<Boolean> {
  val networkRequest = NetworkRequest.Builder()
                .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
                .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR)
                .build()

  val connectivityManager: ConnectivityManager = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager

  connectivityManager.registerNetworkCallback(networkRequest, object : ConnectivityManager.NetworkCallback() {

robertlevonyan

...

override fun onBindViewHolder(vh: ViewHolder, position: Int) {
  val itemData = getData(position)

  vh.textView.setTextFuture(PrecomputedTextCompat.getTextFuture(
        itemData.text,
        TextViewCompat.getTextMetricsParams(textView),
        /*optional custom executor*/ null)
        )

robertlevonyan

fun setTextAsync(textView: TextView, longString: String) {
  val params = textView.textMetricsParams
  val ref = WeakReference(textView)

  CoroutineScope.launch(Dispatchers.Default) {
    val pText = PrecomputedText.create(longString, params)
    withContext(Dispatchers.Main) {
      ref.get()?.let { textView ->
        textView.text = pText
      }