Alternative in-app-purchase methods for Android

Question

I want to use an alternative way for in-app purchases in my Android application such as Fortumo or PayPal libraries. Don't they violate Android Developers Terms of Services? Or will it cause the suspending of my developer account?

Can I also sell electronic currencies in my application using Android native In-App-Purchase?

Answer 1

In-app purchases: Developers offering virtual goods or currencies within a game downloaded from Google Play must use Google Play's in-app billing service as the method of payment. Developers offering additional content, services or functionality within another category of app downloaded from Google Play must use Google Play's in-app billing service as the method of payment, except:

where payment is primarily for physical goods or services (e.g., buying movie tickets, or buying a publication where the price also includes a hard copy subscription);
or where payment is for digital content or goods that may be consumed outside of the app itself (e.g., buying songs that can be played on other music players).

Developers must not mislead users about the apps they are selling nor about any in-app services, goods, content or functionality they are selling. If your product description on Google Play refers to in-app features to which a specific or additional charge applies, your description must clearly notify users that payment is required to access those features.

Source: https://play.google.com/about/developer-content-policy.html