Appium test login in browser and back to app

Im trying to test a Facebook login in my app. When I click the botton for Facebook login my app opens a Chrome browser with the Facebook login on it like this:

enter image description here

This is not the Google Chrome opening this is still the same app but when I do

Set<String> con = driver.getContextHandles();
for(String c : con)
    System.out.println("Available Context : "+c);

To get the context I only get the NATIVE APP context no WEBVIEW context

Is there a solution to get to the email and password inputs and interact with them?