RequiresApi vs TargetApi android annotations

Question

Whats the difference between RequiresApi and TargetApi?

Sample in kotlin:

@RequiresApi(api = Build.VERSION_CODES.M)
@Target         


        

Answer 1

Both of them are for handling feature added to new android API levels without affecting the other API levels.

RequiresApi

@RequiresApi(api = Build.VERSION_CODES.*api_code*)

Here it says that the annotated element should only be called on the given API level or higher. The annotated element below the given API level won't call.

TargetApi

@TargetApi(Build.VERSION_CODES.*api_code*)

Indicates that Lint should treat this type as targeting a given API level, no matter what the project target is. Only meant for specified API level. Won't called on other API level.