Callback in Android?

Question

In Android application development, I frequently go through the word CallBack in many places. I want to know what it means to tell us technically - and how I ca

Answer 1

i want to know what it means, tell us technically

http://en.wikipedia.org/wiki/Callback_%28computer_science%29

"In object-oriented programming languages without function-valued arguments, such as Java, [callbacks] can be simulated by passing an abstract class or interface, of which the receiver will call one or more methods, while the calling end provides a concrete implementation. Such objects are effectively a bundle of callbacks, plus the data they need to manipulate. They are useful in implementing various design patterns such as Visitor, Observer, and Strategy."

how i can manage the callback of the applications

I have no idea what this means.