docs : TextField 구조분해기법 (#3)

[philipy355]

• remember 객체를 구조분해기법을 이용해 사용 할 수 있는 이유

  구조분해 기법  -> MutableState<String> =
  @Stable
  interface MutableState<T> : State<T> {
      override var value: T
      operator fun component1(): T
      operator fun component2(): (T) -> Unit
  }

• 전체코드

  class MainActivity : ComponentActivity() {
  @OptIn(ExperimentalMaterial3Api::class)
  override fun onCreate(savedInstanceState: Bundle?) {
      super.onCreate(savedInstanceState)
      setContent {
  
          val (text, setValue) = remember {
              mutableStateOf("")
          }
  
          Column(
              modifier = Modifier.fillMaxSize(),
              verticalArrangement = Arrangement.Center,
              horizontalAlignment = Alignment.CenterHorizontally
          ){
              TextField(
                  value = text,
                  onValueChange = setValue,
              )
              Button(onClick = {}){
                  Text("클릭!!")
              }
          }
      }
  }
  }