Access shared prefs in fxa pairing (#14997)

app/src/main/java/org/mozilla/fenix/settings/PairFragment.kt

@@ -32,7 +32,6 @@ import org.mozilla.fenix.ext.showToolbar
 class PairFragment : Fragment(R.layout.fragment_pair), UserInteractionHandler {
 
     private val qrFeature = ViewBoundFeatureWrapper<QrFeature>()
-    private val preferences = PreferenceManager.getDefaultSharedPreferences(context)
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -71,10 +70,11 @@ class PairFragment : Fragment(R.layout.fragment_pair), UserInteractionHandler {
             view = view
         )
 
-        val cameraPermissionsDenied = preferences.getBoolean(
-            getPreferenceKey(R.string.pref_key_camera_permissions),
-            false
-        )
+        val cameraPermissionsDenied = PreferenceManager.getDefaultSharedPreferences(context)
+            .getBoolean(
+                getPreferenceKey(R.string.pref_key_camera_permissions),
+                false
+            )
 
         qrFeature.withFeature {
             if (cameraPermissionsDenied) {
@@ -116,13 +116,15 @@ class PairFragment : Fragment(R.layout.fragment_pair), UserInteractionHandler {
                     qrFeature.withFeature {
                         it.onPermissionsResult(permissions, grantResults)
                     }
-                    preferences.edit().putBoolean(
-                        getPreferenceKey(R.string.pref_key_camera_permissions), false
-                    ).apply()
+                    PreferenceManager.getDefaultSharedPreferences(context)
+                        .edit().putBoolean(
+                            getPreferenceKey(R.string.pref_key_camera_permissions), false
+                        ).apply()
                 } else {
-                    preferences.edit().putBoolean(
-                        getPreferenceKey(R.string.pref_key_camera_permissions), true
-                    ).apply()
+                    PreferenceManager.getDefaultSharedPreferences(context)
+                        .edit().putBoolean(
+                            getPreferenceKey(R.string.pref_key_camera_permissions), true
+                        ).apply()
                     findNavController().popBackStack(R.id.turnOnSyncFragment, false)
                 }
             }