Your First Kotlin Android App: Polishing the App

Aug 22 2023 · Kotlin 1.8.20, Android 13, Android Studio Flamingo | 2022.2.1

Part 1: Build Out the App

05. Keep Track of Game Rounds

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Previous episode: 04. Display the Score Next episode: 06. Improve the Alert Title

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00:02In this episode, you’ll modify BullsEye to keep track of the current round of the game and display it. This is a review of even more techniques you’ve learned in this learning path.

var currentRound by rememberSaveable { mutableStateOf(1) }
GameDetail(
  totalScore = totalScore,
  round = currentRound, // New Code
  modifier = Modifier.fillMaxWidth()
)
@Composable
fun GameDetail(
  modifier: Modifier = Modifier,
  totalScore: Int = 0,
  round: Int = 1, // New Code
) {
  //...
    GameInfo(label = stringResource(id = R.string.score_label), value = totalScore)
    GameInfo(label = stringResource(id = R.string.current_round_label), value = round) // New Code
  //...
}
@Composable
fun ResultDialog(
  hideDialog: () -> Unit,
  onRoundIncrement: () -> Unit, // New Code
  //...
){
  //...
}
AlertDialog(
  onDismissRequest = {
    hideDialog()
    onRoundIncrement() // New Code
  },
  confirmButton = {
    TextButton(
      onClick = {
        hideDialog()
        onRoundIncrement() // New Code
      }
    ) {
      Text(stringResource(id = R.string.result_dialog_button_text))
    }
  },
  //...
)
ResultDialog(
  //...
  onRoundIncrement = {
    currentRound += 1
  }
)
ResultDialog(
  //...
  onRoundIncrement = {
    currentRound += 1
    targetValue = Random.nextInt(1, 100) // New Code
  }
)