Xamarin.Android without the 'android:exported' property set error

Issue

When Xamarin.Android is set to Android 12, I received

"You uploaded an APK or Android App Bundle which has an activity, activity alias, service or broadcast receiver with intent filter, but without the 'android:exported' property set. This file can't be installed on Android 12 or higher. See: developer.android.com/about/versions/12/behavior-changes-12#exported"

error while uploading the APK to the Google Play Console for new release.

I have added the the Exported attribute to my activities and services, yet still setting this error.

[Activity(Label = "@string/AppDrawerName", Icon = "@mipmap/ic_launcher", RoundIcon = "@mipmap/ic_launcher_round", Theme = "@style/MainTheme", MainLauncher = true, Exported = false, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation, ScreenOrientation = ScreenOrientation.Portrait)]

    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {

Service

[Service(Exported = true)]
    public class BarcodeService : IBarcodeService
    {

From the compile output I can see the message below

Namespace 'com.google.android.gms.stats' used in: AndroidManifest.xml, AndroidManifest.xml.

android:exported needs to be explicitly specified for element <service#crc640921eac73192168e.PNMessagingService>. Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details.

Then I go into the "obj/Debug" folder to open the Manifest, I can see the below service is auto generated

<service android:name="crc640921eac73192168e.PNMessagingService">
      <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT" />
      </intent-filter>

Anybody know how can I set [Service(Exported = true)] for this service since it's auto generated?

Solution

After got the info from the "obj/Debug" AndroidManifest.xml of the below

I added it into my project's Manifest manually under the tag, finally it's working. Please see below for the Manifest in project.

<application android:label="XXXXX">
    <meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="@drawable/notification_icon" />
    <meta-data android:name="com.google.firebase.messaging.default_notification_color" android:resource="@color/super_red" />
    <service android:name="crc640921eac73192168e.PNMessagingService" android:exported="false">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>
</application>

It's good to check the Manifest on the obj/ folder to ensure all has exported set in the parent.

Answered By - TPG