How can I know what functions to call when programming Android features?

Basically, I don't know what functions & XML attributes to provide when programming a specific Android feature; eg, Android Search Widget with Edittext in the middle, magnifier glass on the right, and a custom icon on the left.

From where I can find out what methods, parameters &开发者_如何学编程 XML attributes to call when doing a specific Android task?

Fron what sources can we find out how to program specific Android feature? Are there some overall programming pictures to reference?

Praiser

Everything you need to know about Android development can be found at developer.android.com.