I'm using Ionic framework and ngCordova.plugins.oauth plugin.
Is there a way to login to facebook with $cordovaOauth automatically without asking for user and password when the facebook app is installed on the device?
If not, is there other way to do it on Ionic?
Yes, there are but not from $cordovaOauth. Here is the plugin https://github.com/Wizcorp/phonegap-facebook-plugin. You have to follow the instruction there to install (I am using this in ionic project and is working great).