In the year 2014, according to analysts at Gartner,
Android will reach 1.1 billion users in 2014, a 26 percent
increase from 2013[1]. With the widely use of Android
devices in digital home environment, Android
application(app) became an important way to provide
services. Many apps are developed to provide service for
daily life , the services includes video on demand(VOD),
health care, shopping services and so on.
During development of Android app, the openness of
Android operating system provides facilities for developers.
However, designing user interface of an Android app is
different from the design of traditional java application and
web application because its user interfaces are designed for
user interaction through screen of mobile phone, tablet and
television.