An excerpt from http://www.sitepoint.com/android-design-anti-patterns-pitfalls/, by @joyceechessa
The more apps behave the way we expect them to, the more intuitive they are to use; the more intuitive they are to use, the easier it is for us to concentrate on our true objective.
The best user interfaces are so intuitive that the UI just disappears and lets us concentrate on what truly matters. People tend to be unaware of the user experience in an app unless it doesn’t meet their expectations.
According to Wikipedia, an anti-pattern (or antipattern) is a common response to a recurring problem that is usually ineffective and risks being highly counterproductive. In this article we’ll look at some anti-patterns and bad practices common in some Android applications, that get in the way of the user accomplishing their tasks, thus providing a poor user experience.
##The Straight Port
The Straight Port is an app that was first made for another platform (usually iOS) and was later quickly and minimally made to work for Android. This usually results in Android apps that have the visual styling and UI conventions of other platforms.
The “design once, ship anywhere” approach rarely works. Different platforms have different rules and guidelines regarding UI and usability and you have to take this into consideration when designing for a particular platform. Your users expectation and behavior has been shaped and influenced by using other apps on that platform.
If your app doesn’t meet these, it’s bound to cause frustration. Android users expect Android apps, so it’s worth looking through the Android design documents to be conversant with the platform’s conventions.