@Composable
fun MainScreenContent(previewView: PreviewView? = null) {
    val context = LocalContext.current

    Row(modifier = Modifier.fillMaxSize()) {
        AndroidView(modifier = Modifier.fillMaxHeight().weight(2f), factory = { ctx ->
            previewView ?: View(context)
        })
        Column(
            modifier = Modifier
                .fillMaxSize()
                .weight(0.7f)
                .padding(32.dp),
            verticalArrangement = Arrangement.SpaceBetween,
            horizontalAlignment = Alignment.CenterHorizontally
        ) {
            Text(style = MaterialTheme.typography.h2, text = "Fotos")
            LazyColumn() {

            }
            Button(modifier = Modifier.fillMaxWidth(), onClick = { /*TODO*/ }) {
                Text(text = "Aufnehmen")
            }
        }
    }
}