Apps webview not working? is it display pdf

[mindus]

Hi
This is my first message to this forum. I am a newbie to this android development.
I am working on the application which it has a webview. I wrote the code for that and it is working for some of the url like Google. But many of the sites it's not working and it shows white page.

1) I want to know that android webview has support how many file formats like pdf, word, excel, text, tif image etc?

2) How to make the webview code to display all url sites?


Thanks
mindus