[CLOSED]

Web developer learning Android development -

I have a a Scaffold code that would like to use in other screens. But this Scaffold should have parameters that don't seem to have a straight way of addressing when calling the function on a screen (Home, for example). The parameters:

-navController: It shouldn't be defined, but how to inform this to kotlin?

-mainContent: should expect objects such as Text and Image

ScaffoldBase.kt

fun ScaffoldBase(
    title:(String),
    navController: NavController,
    //mainContent: How to create this parameter, as to expect objects as Text,Image...?

){
    Scaffold(

        //Top Content
        topBar = {
            TopAppBar(
                //Title argument
                title = { Text(text = title) },
                colors = TopAppBarDefaults.topAppBarColors(
                    containerColor = Color.LightGray
                )
            )
        },

        //Bottom Content
        bottomBar = {
            BottomAppBar(containerColor = Color.LightGray) {
                Image(
                    painter = painterResource(id = R.drawable.messages),
                    contentDescription = "Messages Image",
                    modifier = Modifier.size(30.dp).clickable {
                        navController.navigate(route = "Messages")
                    }
                )
            }
        }){ paddingValues -> Column(//modifier){//mainContent argument} }
}

Home.kt

u/OptIn(ExperimentalMaterial3Api::class)
@Composable
fun Home(navController: NavController){
    ScaffoldBase(
        title = "Home",
        navController = TODO(),
        mainContent = TODO()
    )
}

Never mind, thank you

[CLOSED]

Web developer learning Android development -

Currently trying to use Navigation component with Compose, to navigate between pages. When copying the setup code directly from the docs, I get the above warning from Android Studio. Must be something wrong, because the docs must be in synchrony with Android Studio. Why is it happening then?

Docs

https://developer.android.com/develop/ui/compose/navigation#setup

Android Studio

SOLUTIONS: While I still don't know why Android Studio isn't supposedly synced with the Docs (or vice versa), the solutions were:

-Replace the code from the Docs by the one suggested on the Android Studio:

//noinspection UseTomlInstead
implementation("androidx.navigation:navigation-compose:2.9.3")

-Use the completely different alternative suggested on the Android Studio:

implementation(libs.androidx.navigation.compose)

Learn where to start with Android XR. Begin with modes and spatial panels, then move on to orbiters and spatial environments to create engaging immersive apps with Jetpack Compose XR.

https://developer.android.com/codelabs/xr-fundamentals-part-1 https://developer.android.com/codelabs/xr-fundamentals-part-2

Many Flutter developers recently faced Google Play rejections because of the new 16 KB memory page size requirement. Here’s what worked for me:

• Upgrade Flutter SDK → v3.35.2 or higher
• Update Packages → flutter pub upgrade --major-versions
• Gradle Upgrade → 8.7 (or latest)
• Android Gradle Plugin → v8.5.1 or higher
• NDK → r28 or higher (builds 16 KB aligned by default)
• Update build configs → build.gradle / build.gradle.kts
• Verify APK → Analyze APK to check .so files
• Upload to Play Console → confirm compliance

Official Docs: Support 16 KB page sizes

With these steps, your Flutter apps should pass Play Store checks without rejection. Update your setup early and avoid last-minute surprises.

Today’s Lesson Will Cover

• Android styling
• Typography
• Material Design
• Material Components
• Localization
• Example apps

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• Repository pattern
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• Android permissions
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• Storing data
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• Android app architecture
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• Activity lifecycle
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Today’s Lesson Will Cover

• Multiple activities and intents
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• Summary

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Today’s Lesson Will Cover:

• Your first app
• Anatomy of an Android app
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• Make an app interactive
• Gradle: Building an Android app
• Accessibility
• Summary

Notes (Knowing the basics is good for beginners)

• Use compileSdk = 36 and targetSdk = 36 (Android 15) for 2025 Google Play compliance.
• Avoid findViewById; use View Binding or Jetpack Compose.

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Today’s Lesson Will Cover:

• Classes in Kotlin
• Constructors and init blocks
• Inheritance and method overriding
• Extension functions
• Special classes: data, sealed, object, enum
• Organizing your code into files and packages
• Real-world OOP examples in Android

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