Your First Kotlin Android App: An App From Scratch

Aug 15 2023 · Kotlin 1.8.20, Android 13, Android Studio Flamingo | 2022.2.1

Part 2: Manage Data in Jetpack Compose

16. Work with Strings

Episode complete

Play next episode

Next
About this episode

Leave a rating/review

See forum comments
Cinema mode Mark complete Download course materials
Previous episode: 15. Learn About State Hoisting Next episode: 17. Challenge: Create a Custom Composable

Get immediate access to this and 4,000+ other videos and books.

Take your career further with a Kodeco Personal Plan. With unlimited access to over 40+ books and 4,000+ professional videos in a single subscription, it's simply the best investment you can make in your development career.

Learn more Already a subscriber? Sign in.

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

It’s time to tackle the next item on our programming to-do list: “Read the value of the slider after the user presses the Hit Me button.” But before you do that, I want to tell you about a very important data type you’ll use in your Android apps: “Strings”. You’ve already used this when working with the Text composable but let’s go a bit further.

text = { Text("The slider's value is $sliderValue") }

@Composable
fun ResultDialog(
  hideDialog: () -> Unit,
  sliderValue: Int, // New Code
  modifier: Modifier = Modifier
) {
  //...
}

val sliderToInt = (sliderValue * 100).toInt()

ResultDialog(
  hideDialog = { alertIsVisible = false },
  sliderValue = sliderToInt // New Code
)

text = { Text(stringResource(id = R.string.result_dialog_message)) }
//    text = { Text("The slider's value is $sliderValue") }

<string name="result_dialog_message">The slider\'s value is %1$d.</string>

text = { Text(stringResource(id = R.string.result_dialog_message, sliderValue)) }

var alertIsVisible by rememberSaveable { mutableStateOf(false) }
var sliderValue by rememberSaveable { mutableStateOf(0.5f) }