您必须使用父容器.

例如:

Box( 
    modifier = Modifier.fillMaxSize(),
    contentAlignment = Center
) {
    Text(
        text = "Text",
    )
}

或:

Column(
    modifier = Modifier.fillMaxSize(),
    verticalArrangement = Arrangement.Center,
    horizontalAlignment = Alignment.CenterHorizontally
) {
    Text(
        text = "Text",
    )
}