[BOOK-304] refactor: remember + LaunchedEffect를 produceState로 변경

Author: seoyoon513

core/ui/src/main/kotlin/com/ninecraft/booket/core/ui/component/ReedLoadingIndicator.kt

@@ -4,11 +4,8 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
+import androidx.compose.runtime.produceState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import com.ninecraft.booket.core.common.extensions.noRippleClickable
@@ -21,11 +18,9 @@ fun ReedLoadingIndicator(
     modifier: Modifier = Modifier,
     delayMillis: Long = 500L,
 ) {
-    var showProgressBar by remember { mutableStateOf(false) }
-
-    LaunchedEffect(Unit) {
+    val showProgressBar by produceState(initialValue = false, key1 = delayMillis) {
         delay(delayMillis)
-        showProgressBar = true
+        value = true
     }
 
     if (showProgressBar) {

feature/record/src/main/kotlin/com/ninecraft/booket/feature/record/ocr/OcrUi.kt

@@ -37,9 +37,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.produceState
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -101,16 +100,31 @@ private fun CameraPreview(
     /**
      * Camera Permission Request
      */
-    var isGranted by remember {
-        mutableStateOf(
-            ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED,
-        )
+    val isGranted by produceState(
+        initialValue = ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED,
+        key1 = lifecycleOwner, // lifecycle 변경 시 재설정
+    ) {
+        // 최초 동기화
+        value = ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED
+
+        // 포그라운드 복귀 시 OS 권한 동기화
+        val observer = LifecycleEventObserver { _, event ->
+            if (event == Lifecycle.Event.ON_RESUME) {
+                value = ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED
+                if (value) {
+                    state.eventSink(OcrUiEvent.OnHidePermissionDialog)
+                } else {
+                    state.eventSink(OcrUiEvent.OnShowPermissionDialog)
+                }
+            }
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+        awaitDispose { lifecycleOwner.lifecycle.removeObserver(observer) }
     }
+
     val permissionLauncher = rememberLauncherForActivityResult(
         contract = ActivityResultContracts.RequestPermission(),
     ) { granted ->
-        isGranted = granted
-
         if (!granted) {
             state.eventSink(OcrUiEvent.OnShowPermissionDialog)
         }
@@ -127,22 +141,6 @@ private fun CameraPreview(
         }
     }
 
-    // 앱이 포그라운드로 북귀할 때 OS 권한 동기화
-    DisposableEffect(Unit) {
-        val observer = LifecycleEventObserver { _, event ->
-            if (event == Lifecycle.Event.ON_RESUME) {
-                isGranted = ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED
-                if (isGranted) {
-                    state.eventSink(OcrUiEvent.OnHidePermissionDialog)
-                } else {
-                    state.eventSink(OcrUiEvent.OnShowPermissionDialog)
-                }
-            }
-        }
-        lifecycleOwner.lifecycle.addObserver(observer)
-        onDispose { lifecycleOwner.lifecycle.removeObserver(observer) }
-    }
-
     /**
      * Camera Controller
      */