Android AutoCompleteTextView with chips
Two more Chips libraries.
Android Chips. Unlike some other this one is updated to have visuals reflecting the newly released "Material Design" standard.
Token Auto Complete. It is an Android Gmail style token auto-complete text field and filter.
The official Chips library from Google (as used in Gmail, Email, Calendar, Messaging) is located at https://android.googlesource.com/platform/frameworks/opt/chips/
A simple example of how to use it can be found at https://code.google.com/p/platform-features-talk-io-2013/source/browse/src/com/example/iotalk/ChipsActivity.java