fix(channel): 탭 전환 자동 스크롤을 제거한다

app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/CreatorChannelActivity.kt

@@ -100,7 +100,6 @@ class CreatorChannelActivity :
     private var statusBarHeight: Int = 0
     private var tabLayoutMediator: TabLayoutMediator? = null
     private var pageChangeCallback: ViewPager2.OnPageChangeCallback? = null
-    private var lastSelectedCreatorChannelTabPosition: Int? = null
     private var isOwnerFabExpanded: Boolean = false
     private var isOwnerFabAnimating: Boolean = false
     private var isDonationFloatingButtonVisible: Boolean = false
@@ -343,17 +342,6 @@ class CreatorChannelActivity :
         binding.tvTitleNickname.isVisible = shouldUseBlackTitleBar
     }
 
-    private fun adjustCreatorChannelStickyAnchorOnTabSelected(position: Int) {
-        val previousPosition = lastSelectedCreatorChannelTabPosition
-        lastSelectedCreatorChannelTabPosition = position
-        if (previousPosition == null || previousPosition == position) return
-
-        val stickyScrollY = calculateCreatorChannelStickyScrollY()
-        if (binding.nestedScrollView.scrollY < stickyScrollY) {
-            binding.nestedScrollView.scrollTo(0, stickyScrollY)
-        }
-    }
-
     private fun calculateCreatorChannelStickyScrollY(): Int {
         val stickyTop = CreatorChannelScrollState.calculateStickyTop(statusBarHeight, baseTitleBarHeight)
         return (binding.headerContainer.height - stickyTop).coerceAtLeast(0)
@@ -415,10 +403,8 @@ class CreatorChannelActivity :
         }.also {
             it.attach()
         }
-        lastSelectedCreatorChannelTabPosition = binding.viewPager.currentItem
         val callback = object : ViewPager2.OnPageChangeCallback() {
             override fun onPageSelected(position: Int) {
-                adjustCreatorChannelStickyAnchorOnTabSelected(position)
                 if (position != CreatorChannelTab.Home.ordinal) {
                     collapseOwnerFab(animate = false)
                 }

app/src/test/java/kr/co/vividnext/sodalive/v2/creator/channel/CreatorChannelActivitySourceTest.kt

@@ -1156,24 +1156,27 @@ class CreatorChannelActivitySourceTest {
     }
 
     @Test
-    fun `탭 전환은 sticky tabbar anchor 아래로 내려간 scroll 위치를 되돌리지 않고 부족할 때만 보정한다`() {
+    fun `탭 전환은 공통 scroll 위치를 자동 보정하지 않는다`() {
         val source = projectFile(
             "app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/CreatorChannelActivity.kt"
         ).readText()
 
-        assertTrue(source.contains("private var lastSelectedCreatorChannelTabPosition: Int? = null"))
+        assertFalse(source.contains("private var lastSelectedCreatorChannelTabPosition: Int? = null"))
-        assertTrue(source.contains("lastSelectedCreatorChannelTabPosition = binding.viewPager.currentItem"))
+        assertFalse(source.contains("lastSelectedCreatorChannelTabPosition = binding.viewPager.currentItem"))
-        assertTrue(source.contains("lastSelectedCreatorChannelTabPosition = position"))
+        assertFalse(source.contains("lastSelectedCreatorChannelTabPosition = position"))
-        assertTrue(source.contains("adjustCreatorChannelStickyAnchorOnTabSelected(position)"))
+        assertFalse(source.contains("adjustCreatorChannelStickyAnchorOnTabSelected(position)"))
-        assertTrue(source.contains("private fun adjustCreatorChannelStickyAnchorOnTabSelected(position: Int)"))
+        assertFalse(source.contains("private fun adjustCreatorChannelStickyAnchorOnTabSelected(position: Int)"))
-        assertTrue(source.contains("val previousPosition = lastSelectedCreatorChannelTabPosition"))
+        assertFalse(source.contains("val previousPosition = lastSelectedCreatorChannelTabPosition"))
-        assertTrue(source.contains("if (previousPosition == null || previousPosition == position)"))
+        assertFalse(source.contains("binding.nestedScrollView.scrollTo(0, stickyScrollY)"))
-        assertTrue(source.contains("val stickyScrollY = calculateCreatorChannelStickyScrollY()"))
+        assertFalse(source.contains("binding.nestedScrollView.smoothScrollTo(0, stickyScrollY)"))
-        assertTrue(source.contains("if (binding.nestedScrollView.scrollY < stickyScrollY)"))
-        assertTrue(source.contains("binding.nestedScrollView.scrollTo(0, stickyScrollY)"))
         assertTrue(source.contains("private fun calculateCreatorChannelStickyScrollY(): Int"))
         assertTrue(source.contains("CreatorChannelScrollState.calculateStickyTop(statusBarHeight, baseTitleBarHeight)"))
         assertTrue(source.contains("return (binding.headerContainer.height - stickyTop).coerceAtLeast(0)"))
+        assertTrue(source.contains("updateOwnerFabVisibility()"))
+        assertTrue(source.contains("updateDonationFloatingButtonVisibility()"))
+        assertTrue(source.contains("updateOwnerCtaVisibility()"))
+        assertTrue(source.contains("updateCreatorChannelTabViewportHeight()"))
+        assertTrue(source.contains("updateViewPagerHeight()"))
     }
 
     @Test