Upload file button is not working on android

[zerocoder]

Hello guys
I  have performed a lot google search but found no solution... please help if any body please.

I have converted my  osclass website with Elena theme installed  to android APK using website 2 apk builder pro.

Every thing works fine but the problem starts when someone click on Photo Upload button to upload images from their android gallery  to complete the process of ad posting, button just don't do anything.

I don't like people submitting their ads without photos of their goods.. Please help

Thank you all

P.S I would like to thank you all for your help that I have managed to build and customized my own classified website

[WEBmods]

Hello,

First, you selected the wrong forum for your question, this forum is for "Tips, tricks and tutorials" so post your question to "General help".

Second, you should ask this on forums of the site you used to create an android application because this problem has nothing to do with osclass itself. I suggest you to create a webview application yourself using Android Studio (tutorial) and use this code to add a dialog for uploading a photo in your app.

Regards.

[zerocoder]

Thanks for your guidance and help. 
I am going to download android studio and would like to have a clear explanation about  how to exactly get
the problem solved.  Thank you anyways mate, appreciated