myougaTheAxo

Posted on Mar 1 • Originally published at myougatheax.gumroad.com

Free Android App Starter Kit: Build Your First App in 11 Minutes [No Coding Experience Required]

#android #kotlin #beginners #androiddev

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Android App Starter Kit: Build Your First App in 11 Minutes

By myouga the Axolotl | Free Resource | Full 8-App Bundle on Gumroad

What You'll Get

This free starter kit walks you through the exact process used to build all 8 apps in the myouga Android App Bundle. No prior Android experience required. By the end, you'll have a working Android app running on your phone or emulator.

Part 1: Quick Start Checklist

Get these tools installed before you begin. Each one is free.

Required Tools

[ ] Android Studio (Hedgehog 2023.1 or later)
Download: https://developer.android.com/studio
Size: ~1 GB — install with default settings
[ ] Java Development Kit (JDK 17)
Bundled with Android Studio — no separate download needed
[ ] Android Device OR Emulator
- Physical device: Enable "Developer Options" > "USB Debugging"
- Emulator: Android Studio > Device Manager > Create Virtual Device (Pixel 6, API 34)
[ ] Git (optional but recommended)

Download: https://git-scm.com

Estimated Setup Time

Step	Time
Download Android Studio	3 min
Install + first launch	4 min
Create emulator	2 min
First project build	2 min
Total	~11 min

Part 2: The Exact 5-Step Process

This is the same process used across all 8 apps in the bundle.

Step 1 — Create a New Project (1 min)

Open Android Studio
Click "New Project"
Select template: "Empty Views Activity"
Fill in:
- Name: MyFirstApp
- Package name: com.yourname.myfirstapp
- Language: Kotlin
- Minimum SDK: API 26 (Android 8.0)
Click Finish

Wait for the Gradle sync to complete (progress bar at bottom).

Step 2 — Set Your App Name in strings.xml (1 min)

Open app/src/main/res/values/strings.xml and replace its contents:

<resources>
    <string name="app_name">My First App</string>
    <string name="welcome_message">Welcome! Your app is running.</string>
    <string name="btn_start">Get Started</string>
</resources>

This file is the single source of truth for all text in your app. Never hardcode strings directly in layout files.

Step 3 — Apply a Theme in Theme.kt (2 min)

Navigate to app/src/main/java/com/yourname/myfirstapp/ui/theme/Theme.kt. Replace the default color scheme with something clean:

import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.lightColorScheme
import androidx.compose.runtime.Composable
import androidx.compose.ui.graphics.Color

private val AppColorScheme = lightColorScheme(
    primary = Color(0xFF4CAF50),       // Green — your brand color
    onPrimary = Color.White,
    secondary = Color(0xFF81C784),
    background = Color(0xFFF9F9F9),
    surface = Color.White,
    onBackground = Color(0xFF212121),
    onSurface = Color(0xFF212121)
)

@Composable
fun MyFirstAppTheme(content: @Composable () -> Unit) {
    MaterialTheme(
        colorScheme = AppColorScheme,
        content = content
    )
}

Change the Color(0xFF...) hex values to match your preferred palette. This single file controls the look of your entire app.

Step 4 — Add a Simple Screen (4 min)

Open MainActivity.kt and replace the default content:

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.*
import androidx.compose.material3.*
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import com.yourname.myfirstapp.ui.theme.MyFirstAppTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyFirstAppTheme {
                Surface(modifier = Modifier.fillMaxSize()) {
                    HomeScreen()
                }
            }
        }
    }
}

@Composable
fun HomeScreen() {
    Column(
        modifier = Modifier
            .fillMaxSize()
            .padding(24.dp),
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        Text(
            text = stringResource(R.string.welcome_message),
            style = MaterialTheme.typography.headlineSmall
        )
        Spacer(modifier = Modifier.height(24.dp))
        Button(onClick = { /* TODO */ }) {
            Text(text = stringResource(R.string.btn_start))
        }
    }
}

Step 5 — Run the App (1 min)

Click the green Run button (triangle) in the toolbar, OR press Shift + F10
Select your emulator or connected device
Wait ~30 seconds for the build

You should see your app with a welcome message and a green button. That's it — your first Android app is running.

Part 3: Top 3 Beginner Mistakes to Avoid

These account for 80% of the frustration beginners experience. Avoid them from day one.

Mistake 1: Hardcoding Strings in Layout Files

Wrong:

<TextView android:text="Welcome to my app!" />

Right:

<TextView android:text="@string/welcome_message" />

Why it matters: Hardcoded strings make your app impossible to translate and create maintenance nightmares when you need to change copy across 20 screens.

Mistake 2: Putting Business Logic in the Activity

Wrong:

class MainActivity : ComponentActivity() {
    fun calculateTotal(items: List<Item>): Double {
        return items.sumOf { it.price * it.quantity }
    }
}

Right: Move logic to a ViewModel or a separate utility class. Activities should only handle UI rendering and user input routing.

This matters because Activities get destroyed and recreated on every screen rotation. Business logic in an Activity gets reset unpredictably.

Mistake 3: Ignoring Gradle Sync Errors

When Gradle shows a red error bar, many beginners click "Run" anyway and wonder why nothing works. Always resolve sync errors first.

Quick fixes for the most common sync errors:

Error	Fix
`Could not resolve com.android...`	Check internet connection; File > Sync Project with Gradle Files
`Duplicate class kotlin.collections...`	Add `implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.8.0"))` to `build.gradle`
`SDK location not found`	File > Project Structure > SDK Location — point to your Android SDK path

Part 4: What's Next?

You now have the foundation. The question is: what do you build next?

The myouga Android App Bundle contains 8 complete, ready-to-customize Android apps — each one a real utility that people actually use:

App	What it does
Habit Tracker	Daily habit streaks with notifications
Meeting Timer	Agenda-based countdown for meetings
Expense Memo	Quick expense logging with categories
Unit Converter	40+ unit conversions, works offline
Countdown Timer	Beautiful multi-timer with presets
Budget Manager	Monthly budget tracking with charts
Task Manager	Kanban-style task board
Warikan	Bill splitting for groups

Each app comes with:

Full source code (Kotlin + Jetpack Compose)
A working APK you can install immediately
Clean architecture you can learn from and modify

Pricing

Bundle	Apps	Price
Starter	3 apps	$9.99
Standard	3 apps	$19.99
Premium	2 apps	$29.99
Full Bundle	All 8 apps	$79.99

The full bundle is 60% cheaper than buying comparable apps individually on the market.

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