5.8

```

@Composable
fun OnboardingScreen(
onContinueClicked: () -> Unit,
modifier: Modifier = Modifier
) {

Column(
modifier = modifier.fillMaxSize(),
verticalArrangement = Arrangement.Center,
horizontalAlignment = Alignment.CenterHorizontally
) {
Text("Welcome to the Basics Codelab!")
Button(
modifier = Modifier.padding(vertical = 24.dp),
onClick = onContinueClicked
) {
Text("Continue")
}
}
}

```

初步学习 

jetpack compse 

文本 和按钮