Hi !
The problem continues..
But we made some tests
First Test - > We Create new project Blank Android , and added the reference Syncfusion.SfNavigationDrawer.Android.dll , builded with only the reference and worked ...
Second Test -> We added the files NavigationDrawer.cs , RoundedImageView.cs , the Resources , etc.., in our new project Android , we builded with MainActivity = MainLauncher , and worked ...
Third Test -> We change NavigationDrawer.cs to Main Launcher , we builded but no worked ! , Only deployed and stop
Obs:
if you need that some video of the error, we recorded