What does "support" refer to in Android?

Question

I am seeing:

on Support NavigateUp support ShouldUpRecreateTask onCreate Support NavigateUpTaskStack onPrepare Support NavigateUpTaskStack

So what does it refer to?

Answer 1

Hey this support refer to backward compatibility

Definition from tutorialspoint

Support Library Features

The Android Support Library package contains several libraries that can be included in your application. Each of these libraries supports a specific range of Android platform versions and set of features.

In order to effectively use the libraries, it is important to consider that which API level you want to target as each library supports different API level.

Following is a brief description of android support libraries and API level they support.

tutorialspoint android_support_library