What elements need to be declared in the AndroidManifest.xml file for the app to work correctly?

For the proper functioning of an Android application, the following main elements must be declared in the AndroidManifest.xml file:

• <manifest> — the root element containing attributes such as package (the unique application identifier).
• <application> — describes the application itself, specifying icons, themes, and application components.
• Application components:
  • <activity> — a screen or window of the application.
  • <service> — background services.
  • <receiver> — broadcast message receivers.
  • <provider> — data providers.
• Permissions (<uses-permission>) — for accessing device resources (e.g., internet, camera).
• Minimum and target SDK versions (<uses-sdk>).

Example of a minimal AndroidManifest.xml:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myapp">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:icon="@mipmap/ic_launcher"
        android:label="MyApp">

        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

Without the correct declaration of these elements, the application will not be able to launch and operate correctly on the device.