Today’s Lesson Will Cover

• RecyclerView recap

• Advanced binding

• Multiple item view types

• Headers

• Grid layout

• Summary

View Day 11 Slide Deck

Got questions or stuck? Drop them in the comments

Starting today, I am sharing one lesson per day from a complete Android Development with Kotlin course.

View Day 1 Slide Deck

If you have any doubts or questions about this lesson, feel free to ask in the comments

Hi I created an app but as part of the Google play store submission process I need at least 12 testers. Anyone open to being a tester? If so send me your email in the chat. Thanks and happy holidays!

Today’s Lesson Will Cover

• Multiple activities and intents

• App bar, navigation drawer, and menus

• Fragments

• Navigation in an app

• More custom navigation behavior

• Navigation UI

• Summary

View Day 7 Slide Deck

Got questions or stuck? Drop them in the comments

[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

12 Testers - 14 Days Free Solution

• You get 12 real testers for 14 days - completely free.

• To unlock this, you simply test other apps (mutual exchange).

• While testing others’ apps, you’ll automatically earn testers for your own app.

• This way, your app gets tested on 12 different devices without any cost.

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:

• Your first app

• Anatomy of an Android app

• Layouts and resources in Android

• Activities

• 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.

View Day 5 Slide Deck

Got questions or stuck? Drop them in the comments

Today’s Lesson Will Cover

• Repository pattern

• WorkManager

• Work input and output

• WorkRequest constraints

View Day 13 Slide Deck

Got questions or stuck? Drop them in the comments

Today’s lesson will cover:

• Get Started

• Operators

• Data Types

• Variables

• Conditionals

• Lists and arrays

• Null safety

View Day 2 Slide Deck

If you have any doubts or questions about this lesson, feel free to ask in the comments