我想统计输入PIN的尝试次数，并相应地显示通知：
val remainingPinCounter = remember { mutableStateOf(3) }
//
if(pinState == WRONG_PIN) {
remainingPinCounter.value--
showWrongPinNotification(remainingPinCounter)
}
@Composable
private fun showWrongPinNotification(retries: MutableStateOf<Int>){
if(retries.value > 0) Log.d("TAG", "Remaining Retries := $retries.value)
else Log.d("TAG", "All $retries.value attempts failed!)
//..
}
但是showWrongPinNotification()是连续调用的，remainingPinCounter增加到-无穷大，尽管我只通过pinState == WRONG_PIN递减它？！我猜状态WRONG_PIN没有改变，因此不断地用递减的值调用showWrongPinNotification？
它在没有记忆的情况下正常工作->val remainingPinCounter = 3
if(pinState == WRONG_PIN) {
remainingPinCounter.value--
showWrongPinNotification(remainingPinCounter)
}
如果在下一次重新组合之前不更改pinState，则可能是无限次重新组合。如果是这种情况，则调用每个重新组合条件块，并且remainingPinCounter的值不断变化。
LaunchedEffect(pinState) {
if(pinState == WRONG_PIN) {
remainingPinCounter.value--
showWrongPinNotification(remainingPinCounter)
}
}
另一种选择是使用LaunchedEffect作为只减少一次