Jetpack Compose

Oct 11 2022 Kotlin 1.7.10, Android 13, Android Studio Chipmunk

Part 2: Build Complex UI with Compose

11. Build Custom Dialogs

Episode complete

Play next episode

Next
Save for later
About this episode
See versions

See forum comments
Cinema mode Mark complete Download course materials
Previous episode: 10. Add Actions & Handlers Next episode: 12. Add Themes & Styling to the App

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

Heads up... You've reached locked video content where the transcript will be shown as obfuscated text.

You can unlock the rest of this video course, and our entire catalogue of books and videos, with a kodeco.com Professional subscription.

Unlock Now

Demo

You can also build custom dialogs in compose! Let’s build one to be able to add reading lists. Create a new file within the readingLists.ui package, named ReadingListDialogs, and add the following code:

@Composable
fun AddReadingList(
  onAddList: (String) -> Unit = {},
  onDismiss: () -> Unit = {}
) {
  val inputState = remember { mutableStateOf("") }

  Dialog(onDismissRequest = onDismiss) {
    val shape = RoundedCornerShape(16.dp)
  }
}

    Column(
      modifier = Modifier.background(
        MaterialTheme.colors.surface,
        shape = shape
      ).border(width = 1.dp, color = MaterialTheme.colors.primary, shape = shape),
      verticalArrangement = Arrangement.Center,
      horizontalAlignment = Alignment.CenterHorizontally
    ) {

    }

      Spacer(modifier = Modifier.height(16.dp))

      Text(
        text = stringResource(id = R.string.add_reading_list_title),
        fontSize = 18.sp,
        fontWeight = FontWeight.Bold
      )

      InputField(
        label = stringResource(id = R.string.reading_list_name_hint),
        value = inputState.value,
        isInputValid = inputState.value.isNotEmpty(),
        onStateChanged = { newValue -> inputState.value = newValue }
      )

      ActionButton(
        modifier = Modifier.fillMaxWidth(),
        text = stringResource(id = R.string.add_reading_list_button_text),
        isEnabled = inputState.value.isNotEmpty(),
        onClick = { onAddList(inputState.value) },
      )

val readingListsState = mutableStateOf(emptyList<ReadingListsWithBooks>())

private val _isShowingAddReadingListState = mutableStateOf(false)

  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    loadReadingLists()
  }

  private fun loadReadingLists() {
    lifecycleScope.launch {
      readingListsState.value = repository.getReadingLists()
    }
  }

val readingLists = readingListsState.value

Box(
      modifier = Modifier.fillMaxSize(),
      contentAlignment = Alignment.Center
    ) {

    ReadingLists(readingLists, onItemClick = { onItemSelected(it) })
    
      val isShowingAddList = _isShowingAddReadingListState.value

      if (isShowingAddList) {
        AddReadingList(
          onDismiss = { _isShowingAddReadingListState.value = false },
          onAddList = { name ->
            addReadingList(name)
            _isShowingAddReadingListState.value = false
          })
      }
    }

  @Composable
  fun AddReadingListButton() {
    FloatingActionButton(onClick = {
      _isShowingAddReadingListState.value = true
    }) {
      Icon(asset = Icons.Default.Add)
    }
  }


  fun addReadingList(readingListName: String) {
    lifecycleScope.launch {
      repository.addReadingList(ReadingList(name = readingListName, bookIds = emptyList()))

      readingListsState.value = repository.getReadingLists()
    }
  }