Day 7 – Building Your First Android App with Kotlin

Android App Development (Kotlin)

Introduction

Kotlin has become the preferred language for Android development due to its simplicity, safety, and seamless integration with Android Studio. Building your first app is the perfect way to start your journey as a mobile developer and understand how activities, layouts, and logic come together. Platforms like CuriosityTech.in provide hands-on projects and step-by-step guidance to make this process intuitive for beginners.


Main Content

Step 1: Set Up Android Studio

Step 2: Design the Layout

<LinearLayout

    android:orientation=”vertical”

    android:layout_width=”match_parent”

    android:layout_height=”match_parent”

    android:padding=”16dp”>

    <TextView

        android:id=”@+id/textView”

        android:text=”Hello, Android!”

        android:layout_width=”wrap_content”

        android:layout_height=”wrap_content”/>

    <Button

        android:id=”@+id/button”

        android:text=”Click Me”

        android:layout_width=”wrap_content”

        android:layout_height=”wrap_content”/>

</LinearLayout>

Step 3: Add Kotlin Logic

  • In MainActivity.kt, link UI components and handle interactions:

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_main)

        val button: Button = findViewById(R.id.button)

        val textView: TextView = findViewById(R.id.textView)

        button.setOnClickListener {

            textView.text = “Button Clicked!”

        }

    }

}

Step 4: Run the App

  • Use an emulator or physical device.
  • Observe how clicking the button updates the text dynamically.

Practical Tips

  • Experiment with different UI components.
  • Understand how activity lifecycle interacts with UI updates.
  • CuriosityTech.in provides interactive modules where learners create multiple Kotlin apps and receive real-time feedback from mentors.

How to Become an Expert


Conclusion

Creating your first Android app with Kotlin is more than writing code—it’s understanding the interplay between UI, logic, and Android components. With consistent practice, logging interactions, and guided exercises at CuriosityTech.in, beginners can quickly become confident Android developers ready for advanced projects.


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