[Anotation] @RequiresApi, @TargetApi

RequiresApi, TargetApi

@TargetApi(Build.VERSION_CODES.O)
fun test2(){
    
}

@RequiresApi(Build.VERSION_CODES.O)
fun test1(){
    
}

@TargetApi는 IDE에 알려주기만 하는 것.

@RequiresApi는 호출 조건을 강제 하는 것.

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_test_activty)

    test1() //안됨

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) test1() //ㅇㅋ

    test2() //ㅇㅋ
}

참고: https://toepic.fail/android-anotation-requiresapi-targetapi-ed1ae1f6041b