OnCharacteristicChanged spams my output window with monodroid errors and I don't understand why?

[Glomby]

The characerisitic that I am subscribing to sends every 15ms, so my entire output windows is basically only these messages.

Im connecting to my BLE Device and subscribing to a characterisitc with notify. The data from that characteristic also seems to arrive fine but I get an error for every one. I can only reproduce it on my Samsung Galaxy S9 with API 31 installed. Another phone does not have this and sadly I can't test with emulators because I need a BLE connection.

I'm on Shiny 3.3.3 and MAUI 8.0.61 (.NET 8)

I get this every 15ms:

[monodroid-assembly] typemap: unable to find mapping to a Java type from managed type 'System.Byte, System.Private.CoreLib'
[monodroid] typemap: failed to map managed type to Java type: System.Byte, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e (Module ID: debf0922-3daf-4120-8c1c-e6917c72f78d; Type token: 33554596)
[monodroid-assembly] typemap: called from
[monodroid-assembly] at Android.Runtime.JNIEnv.TypemapManagedToJava(Type type) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNIEnv.cs:line 527
    at Android.Runtime.JNIEnv.GetJniName(Type type) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNIEnv.cs:line 541
    at Android.Runtime.JNIEnv.FindClass(Type type) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNIEnv.cs:line 308
    at Android.Runtime.JNIEnv.AssertCompatibleArrayTypes(IntPtr sourceArray, Type destType) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNIEnv.cs:line 617
    at Android.Runtime.JNIEnv._GetArray(IntPtr array_ptr, Type element_type) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNIEnv.cs:line 1089
    at Android.Runtime.JNIEnv.GetArray(IntPtr array_ptr, JniHandleOwnership transfer, Type element_type) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNIEnv.cs:line 982
    at Android.Bluetooth.BluetoothGattCharacteristic.GetValue() in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Android.Bluetooth.BluetoothGattCharacteristic.cs:line 712
    at Shiny.BluetoothLE.Peripheral.ToResult(BluetoothGattCharacteristic ch, BleCharacteristicEvent event)
    at Shiny.BluetoothLE.Peripheral.<>c__DisplayClass38_0.<NotifyCharacteristic>b__7(BluetoothGattCharacteristic x)
    at System.Reactive.Linq.ObservableImpl.Select`2.Selector._[[Android.Bluetooth.BluetoothGattCharacteristic, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065],[Shiny.BluetoothLE.BleCharacteristicResult, Shiny.BluetoothLE, Version=3.3.3.1, Culture=neutral, PublicKeyToken=null]].OnNext(BluetoothGattCharacteristic value)
    at System.Reactive.Sink`1[[Android.Bluetooth.BluetoothGattCharacteristic, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065]].ForwardOnNext(BluetoothGattCharacteristic value)
    at System.Reactive.Linq.ObservableImpl.Where`1.Predicate._[[Android.Bluetooth.BluetoothGattCharacteristic, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065]].OnNext(BluetoothGattCharacteristic value)
    at System.Reactive.Subjects.Subject`1[[Android.Bluetooth.BluetoothGattCharacteristic, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065]].OnNext(BluetoothGattCharacteristic value)
    at Shiny.BluetoothLE.Peripheral.OnCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic)
    at Android.Bluetooth.BluetoothGattCallback.n_OnCharacteristicChanged_Landroid_bluetooth_BluetoothGatt_Landroid_bluetooth_BluetoothGattCharacteristic_(IntPtr jnienv, IntPtr native__this, IntPtr native_gatt, IntPtr native_characteristic) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Android.Bluetooth.BluetoothGattCallback.cs:line 129
    at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPLL_V(_JniMarshal_PPLL_V callback, IntPtr jnienv, IntPtr klazz, IntPtr p0, IntPtr p1) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:line 198

The App works fine and the data from that characteristic seems to also be fine but debugging is almost impossible and the performance in debug mode is obviusly pretty bad with to many messages.

Any help or nudge into the right direction would be greaty appreciated.

[aritchie]

No idea. It looks like something may have been delinked from your build. Do you have an example of the call you're making?

Shiny uses Microsoft.Extensions.Logging, so you can configure the logging to be turned off for the specific class.