PaymentKit-Droid is an Open Source Android library that allows developers to create sleek payment forms like those made popular by StubHub, Stripe, Uber, and Postmates. The library provides support for as far back as 2.1.
The PKExample provides an example implementation pattern you may follow.
The 'PaymentKit Droid' folder is the library project you want to add to your Android project. See http://stackoverflow.com/questions/8248196/how-to-add-a-library-project-to-a-android-project.
A sample app will soon be available on the google play store.
Feel free to leave requests and feedback through github (brendanw) or twitter (elbrendan).
You can also find my contact information at http://www.brendanweinstein.me
Things to be added in the future:
-Documentation
-Better handling of spacing for landscape mode
-Support for more cards
-Removal of edittext assets and the addition of code for using default android edittext backgrounds
-Ability to move cursor anywhere in expiration date field.
-More error messaging ability options