diff --git a/app/src/main/java/com/maenle/bump/ui/CameraFragment.kt b/app/src/main/java/com/maenle/bump/ui/CameraFragment.kt
index f1b1bb2..9275f1f 100644
--- a/app/src/main/java/com/maenle/bump/ui/CameraFragment.kt
+++ b/app/src/main/java/com/maenle/bump/ui/CameraFragment.kt
@@ -17,7 +17,6 @@ import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProvider
-import com.maenle.bump.databinding.FragmentSecondBinding
 import com.google.mlkit.vision.barcode.Barcode
 import com.google.mlkit.vision.barcode.BarcodeScanner
 import com.google.mlkit.vision.barcode.BarcodeScannerOptions
@@ -31,6 +30,9 @@ import kotlin.math.min
 import android.view.WindowInsets
 
 import android.graphics.Insets
+import androidx.navigation.fragment.findNavController
+import com.maenle.bump.R
+import com.maenle.bump.databinding.FragmentCameraBinding
 import com.maenle.bump.util.BumpProcessor
 import com.maenle.bump.util.CameraXViewModel
 
@@ -44,7 +46,7 @@ class CameraFragment: Fragment() {
     private var previewUseCase: Preview? = null
     private var analysisUseCase: ImageAnalysis? = null
 
-    private var _binding: FragmentSecondBinding? = null
+    private var _binding: FragmentCameraBinding? = null
     private val binding get() = _binding!!
 
     private val screenAspectRatio: Int
@@ -67,7 +69,7 @@ class CameraFragment: Fragment() {
         savednstanceState: Bundle?
     ): View {
 
-        _binding = FragmentSecondBinding.inflate(inflater, container, false)
+        _binding = FragmentCameraBinding.inflate(inflater, container, false)
         setupCamera()
         return binding.root
     }
@@ -183,7 +185,8 @@ class CameraFragment: Fragment() {
                     Log.d(TAG, it.rawValue!!)
                     val bump = BumpProcessor.getInstance(requireContext())
                    bump.addSecret(requireContext(), it.rawValue!!)
-                    fragmentManager?.popBackStack()
+                    findNavController().navigateUp()
+
                 }
             }
             .addOnFailureListener {
diff --git a/app/src/main/java/com/maenle/bump/ui/FirstFragment.kt b/app/src/main/java/com/maenle/bump/ui/FirstFragment.kt
index 1737f05..0f491c4 100644
--- a/app/src/main/java/com/maenle/bump/ui/FirstFragment.kt
+++ b/app/src/main/java/com/maenle/bump/ui/FirstFragment.kt
@@ -17,6 +17,7 @@ import com.maenle.bump.util.RestSingleton
 import com.maenle.bump.util.sendNotification
 import com.maenle.bump.R
 import com.maenle.bump.databinding.FragmentFirstBinding
+import com.maenle.bump.util.LocalData
 import org.json.JSONArray
 
 /**
@@ -65,8 +66,10 @@ class FirstFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         binding.buttonFirst.setOnClickListener {
-            findNavController().navigate(R.id.action_FirstFragment_to_SecondFragment)
+            findNavController().navigate(R.id.action_FirstFragment_to_CameraFragment)
         }
+        val local = LocalData(requireContext())
+        local.code?.let { binding.textviewFirst.text = it}
     }
 
     private fun createChannel(channelId: String, channelName: String) {
diff --git a/app/src/main/res/layout/fragment_camera.xml b/app/src/main/res/layout/fragment_camera.xml
index cb17097..80c7c42 100644
--- a/app/src/main/res/layout/fragment_camera.xml
+++ b/app/src/main/res/layout/fragment_camera.xml
@@ -6,9 +6,9 @@
     android:layout_height="match_parent"
     tools:context="com.maenle.bump.ui.SecondFragment">
 
-    <!--androidx.camera.view.PreviewView
+    <androidx.camera.view.PreviewView
         android:id="@+id/viewFinder"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" /-->
+        android:layout_height="match_parent" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/navigation/nav_graph.xml b/app/src/main/res/navigation/nav_graph.xml
index 0a5338d..5bc0e10 100644
--- a/app/src/main/res/navigation/nav_graph.xml
+++ b/app/src/main/res/navigation/nav_graph.xml
@@ -12,19 +12,9 @@
         tools:layout="@layout/fragment_first">
 
         <action
-            android:id="@+id/action_FirstFragment_to_SecondFragment"
+            android:id="@+id/action_FirstFragment_to_CameraFragment"
             app:destination="@id/CameraFragment" />
     </fragment>
-    <fragment
-        android:id="@+id/SecondFragment"
-        android:name="com.maenle.bump.ui.SecondFragment"
-        android:label="@string/second_fragment_label"
-        tools:layout="@layout/fragment_second">
-
-        <action
-            android:id="@+id/action_SecondFragment_to_FirstFragment"
-            app:destination="@id/FirstFragment" />
-    </fragment>
     <fragment
         android:id="@+id/CameraFragment"
         android:name="com.maenle.bump.ui.CameraFragment"
@@ -32,7 +22,7 @@
         tools:layout="@layout/fragment_camera">
 
         <action
-            android:id="@+id/action_SecondFragment_to_FirstFragment"
+            android:id="@+id/action_CameraFragment_to_FirstFragment"
             app:destination="@id/FirstFragment" />
     </fragment>
 </navigation>
\ No newline at end of file