[REFACTOR] #282 콜백 등록하는 함수들 하나로 묶기

Author: leeeha

app/src/main/java/com/runnect/runnect/presentation/discover/DiscoverFragment.kt

@@ -72,8 +72,8 @@ class DiscoverFragment : BindingFragment<FragmentDiscoverBinding>(R.layout.fragm
         initLayout()
         addListener()
         addObserver()
-        registerBackPressedCallback()
-        registerRefreshLayoutScrollUpCallback()
+        registerCallback()
+
     }
 
     private fun initLayout() {
@@ -83,6 +83,11 @@ class DiscoverFragment : BindingFragment<FragmentDiscoverBinding>(R.layout.fragm
         }
     }
 
+    private fun registerCallback() {
+        registerBackPressedCallback()
+        registerRefreshLayoutScrollUpCallback()
+    }
+
     private fun registerRefreshLayoutScrollUpCallback() {
         // 첫번째 멀티 뷰 타입이 완전히 화면에 보일 때만 리프레시 가능하도록
         val layoutManager = binding.rvDiscoverMultiView.layoutManager as LinearLayoutManager
@@ -140,7 +145,6 @@ class DiscoverFragment : BindingFragment<FragmentDiscoverBinding>(R.layout.fragm
         binding.rvDiscoverMultiView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
             override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                 super.onScrolled(recyclerView, dx, dy)
-
                 // 스크롤을 내리면 원형 버튼이 보이도록
                 if (dy > 0) {
                     binding.fabDiscoverUploadText.isVisible = false
@@ -431,6 +435,5 @@ class DiscoverFragment : BindingFragment<FragmentDiscoverBinding>(R.layout.fragm
         private const val EXTRA_PUBLIC_COURSE_ID = "publicCourseId"
         private const val EXTRA_ROOT_SCREEN = "rootScreen"
         const val EXTRA_EDITABLE_DISCOVER_COURSE = "editable_discover_course"
-        const val END_PAGE = "HTTP 400 Bad Request"
     }
 }