MAUI Email.ComposeAsync function call throws FeatureNotSupportedException on Android

Question

I'm about to publish an application on Google Play, but my package was rejected because it uses this permission:

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

I included this permission in the AndroidManifest.xml because calling the Email.ComposeAsync function would result in a FeatureNotSupportedException without it.

        var message = new EmailMessage
        {
            Subject = $"Új funkció kérése / Hiba bejelentés ({AppInfo.AppName} {AppInfo.AppVersion})",
            Body = "Tisztelt Szoftverfejlesztő!\r\n\r\nKérés / hiba leírása...\r\n\r\nÜdvözlettel\r\n\r\n",
            To = [AppInfo.AppEmail],
            BodyFormat = EmailBodyFormat.PlainText
        };
        
        if (!String.IsNullOrEmpty(AppInfo.DevEmail))
        {
            message.Bcc = [AppInfo.DevEmail];
        }

        //await Email.Default.ComposeAsync(message).ConfigureAwait(false);
        await Email.ComposeAsync(message).ConfigureAwait(false);

I checked the documentation , and it doesn't specify which permission I should add for this function call to work or why it requires the QUERY_ALL_PACKAGES permission.

These are the exception details:

Microsoft.Maui.ApplicationModel.FeatureNotSupportedException

• Message: Specified method is not supported.

Call stack:

• 0xFFFFFFFFFFFFFFFF in Android.Runtime.RuntimeNativeMethods.monodroid_debugger_unhandled_exception C#
• 0x1A in Android.Runtime.JNINativeWrapper._unhandled_exception at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:13,5 C#
• 0x1D in Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:27,26 C#
• 0x17 in System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw C#
• 0x6 in System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0 C#
• 0xC in Android.App.SyncContext.<Post>b__8_0 at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.App/SyncContext.cs:36,19 C#
• 0xE in Java.Lang.Thread.RunnableImplementor.Run at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Java.Lang/Thread.cs:36,6 C#
• 0x8 in Java.Lang.IRunnableInvoker.n_Run at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Java.Lang.IRunnable.cs:84,4 C#
• 0x8 in Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V at /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:26,5 C#

The best approach would be to avoid using the QUERY_ALL_PACKAGES permission. Is there a possibility to do this?

Answer 1

according to the docs, you need to add this to the Android manifest

<queries> 
  <intent> 
    <action android:name="android.intent.action.SENDTO" /> 
    <data android:scheme="mailto" /> 
  </intent> 
</queries>