Hi All, trying to transition from one screen to another (Login -≥ Main) So once the Login Button ha...

# multiplatform

[Barry Fawthrop]

Hi All, trying to transition from one screen to another (Login -≥ Main) So once the Login Button has been clicked it sets login = true and I have. if(login) { MainScreen(). }. Where MainScreen is a composable. I expect the screen to fully change from the Login Composable/UI to the Main Composable/UI. but end up with a half and half the top half is still Login the Bottom is part of Main. I don't need navgiation or a back stack as Main will start that. Please Advices, Thanks

[Aniket Shinde]

Can you share screen shot ? Seems issue is with the screens that you have designed

[Barry Fawthrop]

Screenshot 2025-08-10 at 1.04.49 PM.png,Screenshot 2025-08-10 at 1.05.01 PM.png

[Barry Fawthrop]

Here is the Login Screen I tap Login and then get the second image which is Login in squished to the top and Main squished to the bottom. both screen at once in stead of Login becoming Main

[Aniket Shinde]

It seems the issue is in modifiers, hope Login and Main screen are not in same parent view

[Barry Fawthrop]

explain please?

[Barry Fawthrop]

LoginScreen starts with

MaterialTheme(
    colorScheme = theme,
) {
    Column(
        modifier = Modifier
            .fillMaxSize()
            .background(AppColors.silver)
    ) {

MainScreen starts with

MaterialTheme(
    colorScheme = theme,
) {
    Scaffold(
        modifier = Modifier.fillMaxSize(),
        topBar =  {

[Aniket Shinde]

Do you have any repo to share ?

[Barry Fawthrop]

sorry no just beginning to see if a KMP will work to combine two native codes sources into one.

[Ohiorenua Aigboje]

MaterialTheme(
    colorScheme = if (isDark) DarkColorScheme else LightColorScheme,
) {
    var login by remember { mutableStateOf(false) }
    if (login) {
        Column(Modifier.fillMaxSize()) { /* your login screen*/}
    } else {
        Scaffold(Modifier.fillMaxSize()) {/* Your main screen*/ }
    }
}

Try this way and there should always be one material theme in your app.

I will also suggest using voyager it is the best screen, viewmodel and navigation for KMP and android.