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 3: Coding in Kotlin

21. Understand Kotlin's Standard Library

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Notes: 21. Understand Kotlin's Standard Library

Kotlin Standard Library documentation

You can replace your code with the one below to generated a new target value based on the current system time. More info in the link here: Random number generating same value on rebuild - Stack Overflow

val randomGenerator = Random(System.currentTimeMillis())
var targetValue by rememberSaveable { mutableStateOf(randomGenerator.nextInt(1, 100)) }

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Kotlin comes with many built-in data types and functions that you can use in your own apps to complete a variety of common programming tasks. This is known as the Kotlin Standard Library.

var targetValue by rememberSaveable { mutableStateOf(Random.nextInt(1, 100)) }

GamePrompt(targetValue = targetValue)

@Composable
fun GamePrompt(targetValue: Int, modifier: Modifier = Modifier) {
  //...
}

Text(
  "$targetValue", // New Code
  fontSize = 32.sp,
  fontWeight = FontWeight.Bold,
  modifier = Modifier.padding(8.dp)
)

Text(
// "$targetValue",
  targetValue.toString(),
  //...
)