How to add properties in info.plist in iOS

Question

I want to open PDF attachment via email in my own application: I refer two link here:

How do I associate file types with an iPhone application?

and here on Raywe

Answer 1

plist files is nothing more than XML document that Xcode view in his own way. You can Right click -> Open as -> Source Code to get view you want.

Also you can add to plist directly by clicking plus sign or Right click -> Add Row. Default view of plist can give you a suggestions, so I recommend you to use this instead of viewing as XML