packages/device_info/device_info/example/android/app/src/main/AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="io.flutter.plugins.deviceinfoexample">

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

    <application android:name="io.flutter.app.FlutterApplication" android:label="device_info_example" android:icon="@mipmap/ic_launcher">
        <activity android:name=".EmbeddingV1Activity"
                  android:launchMode="singleTop"
                  android:theme="@android:style/Theme.Black.NoTitleBar"
                  android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection"
                  android:hardwareAccelerated="true"
                  android:exported="true"
                  android:windowSoftInputMode="adjustResize">
        </activity>

        <activity android:name="io.flutter.embedding.android.FlutterActivity"
          android:theme="@android:style/Theme.Black.NoTitleBar"
          android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale"
          android:hardwareAccelerated="true"
          android:windowSoftInputMode="adjustResize">
          <meta-data
            android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
            android:value="true" />
          <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
          </intent-filter>
        </activity>        
        <meta-data android:name="flutterEmbedding" android:value="2"/>
    </application>
</manifest>