I can not open a pdf file in the folder File.DirAssets & "/products/product.pdf, there is an error or you can not open a file in that folder?
B4X:
Dim In As Intent
In.Initialize(In.ACTION_VIEW, "file://" & aFile)
In.SetType("application/pdf")
In.SetComponent("android/com.android.internal.app.ResolverActivity")
StartActivity(In)