The basic idea is derived from Erel code to display an image from dirassets in HTML code, this image can be a gif image and then displayed by the webview.
B4X:
Sub DisplayGif(FileName As String,lf As Int,tp As Int)
Dim img As Bitmap
img.Initialize(File.DirAssets,FileName)
Dim w,h As Int
w=img.Width : h=img.Height
Dim wb As WebView
wb.Initialize("")
Activity.AddView(wb,lf,tp,w,h)
Dim imgasset As String
Dim jo As JavaObject
jo.InitializeStatic("anywheresoftware.b4a.objects.streams.File")
If jo.GetField("virtualAssetsFolder") = Null Then
imgasset= "file:///android_asset/" & FileName.ToLowerCase
Else
imgasset= "file://" & File.Combine(jo.GetField("virtualAssetsFolder"), _
jo.RunMethod("getUnpackedVirtualAssetFile", Array As Object(FileName)))
End If
wb.LoadHtml("<html><body background='" & imgasset & "'></body></html>")
End Sub
