เครื่องมือเลือกเวลา

@Composable
fun DialExample(
    onConfirm: () -> Unit,
    onDismiss: () -> Unit,
) {
    val currentTime = Calendar.getInstance()

    val timePickerState = rememberTimePickerState(
        initialHour = currentTime.get(Calendar.HOUR_OF_DAY),
        initialMinute = currentTime.get(Calendar.MINUTE),
        is24Hour = true,
    )

    Column {
        TimePicker(
            state = timePickerState,
        )
        Button(onClick = onDismiss) {
            Text("Dismiss picker")
        }
        Button(onClick = onConfirm) {
            Text("Confirm selection")
        }
    }
}
TimePickers.kt

@Composable
fun InputExample(
    onConfirm: () -> Unit,
    onDismiss: () -> Unit,
) {
    val currentTime = Calendar.getInstance()

    val timePickerState = rememberTimePickerState(
        initialHour = currentTime.get(Calendar.HOUR_OF_DAY),
        initialMinute = currentTime.get(Calendar.MINUTE),
        is24Hour = true,
    )

    Column {
        TimeInput(
            state = timePickerState,
        )
        Button(onClick = onDismiss) {
            Text("Dismiss picker")
        }
        Button(onClick = onConfirm) {
            Text("Confirm selection")
        }
    }
}
TimePickers.kt

@Composable
fun DialUseStateExample(
    onConfirm: (TimePickerState) -> Unit,
    onDismiss: () -> Unit,
) {
    val currentTime = Calendar.getInstance()

    val timePickerState = rememberTimePickerState(
        initialHour = currentTime.get(Calendar.HOUR_OF_DAY),
        initialMinute = currentTime.get(Calendar.MINUTE),
        is24Hour = true,
    )

    Column {
        TimePicker(
            state = timePickerState,
        )
        Button(onClick = onDismiss) {
            Text("Dismiss picker")
        }
        Button(onClick = { onConfirm(timePickerState) }) {
            Text("Confirm selection")
        }
    }
}
TimePickers.kt

var selectedTime: TimePickerState? by remember { mutableStateOf(null) }

// ...

DialUseStateExample(
    onDismiss = {
        showDialExample = false
    },
    onConfirm = {
            time ->
        selectedTime = time
        showDialExample = false
    },
)

// ...

if (selectedTime != null) {
    val cal = Calendar.getInstance()
    cal.set(Calendar.HOUR_OF_DAY, selectedTime!!.hour)
    cal.set(Calendar.MINUTE, selectedTime!!.minute)
    cal.isLenient = false
    Text("Selected time = ${formatter.format(cal.time)}")
} else {
    Text("No time selected.")
}