Android Question WebView ScaleToFit for b4a

dieterp · Mar 16, 2016

I am adding an image to a WebView in B4a but the image doesn't scale down to the size of the WebView. How do I accomplish this? I know in b4i the 'ScaleToFit' function handles this with the WebView

Erel · Mar 17, 2016

Try this:

B4X:

Sub LoadImage(img As String)
   WebView1.LoadHtml($"
   <html>
   <head><style>img{display: inline; height: auto; max-width: 100%;}</style></head><img src="${WebViewAssetFile(img)}">
   </body>
   </html>"$)
End Sub


Sub WebViewAssetFile (FileName As String) As String
  Dim jo As JavaObject
  jo.InitializeStatic("anywheresoftware.b4a.objects.streams.File")
  If jo.GetField("virtualAssetsFolder") = Null Then
  Return "file:///android_asset/" & FileName.ToLowerCase
  Else
  Return "file://" & File.Combine(jo.GetField("virtualAssetsFolder"), _
  jo.RunMethod("getUnpackedVirtualAssetFile", Array As Object(FileName)))
  End If
End Sub

Based on this answer: http://stackoverflow.com/questions/10395292/android-webview-scaling-image-to-fit-the-screen

dieterp · Mar 17, 2016

Thanks for the reply Erel. I'm struggling a bit to get this to work but I have found another way to approach the problem.

Android Question WebView ScaleToFit for b4a

dieterp

Active Member

Erel

B4X founder

dieterp

Active Member

Similar Threads