android - 撰写foreach循环:@Composable invocations can only happen from the context of a @Composable function

Question

我正在尝试迭代 List对象，对于每个我想要显示可组合卡片的对象。问题是你不能从 list.forEach{} 内部调用 Composable 函数。括号。
编码:

@Composable
fun Greeting(listy : List<SomethingForLater>) {
  LazyColumn {
    listy.forEach {
        //error here
        testCard(somethingForLater = it)
        }

    }
}
@Composable
fun testCard(somethingForLater: SomethingForLater){
val theme = MaterialTheme
Card(shape = theme.shapes.small,backgroundColor = theme.colors.secondary){
    Column {
        Row {
            Text(
                text = somethingForLater.task,
                modifier = Modifier.padding(start = 5.dp,
                    top = 3.dp,bottom = 3.dp
                ),
                fontSize = 18.sp,
                fontWeight = FontWeight.Bold,

                )
        }
    }
    }
}

Answer 1

有items LazyColumn 中的参数

LazyColumn {
        items(listy) { message ->
            testCard(message)
        }
    }

或者您可以简单地更改 LazyColumn至 Column