רשות — JSON נשמר גם אחרי הפעלה מחדש

                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="Rename first object to Pixel" />
+            <Button
+                android:id="@+id/savePets"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="Save objects as JSON" />
+            <Button
+                android:id="@+id/restorePets"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="Restore saved JSON and objects" />
             <TextView
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"

         binding.showAll.setOnClickListener(v -> renderPets(pets));
         binding.renameFirst.setOnClickListener(v -> renameFirst());
         binding.postPet.setOnClickListener(v -> postPet());
+        binding.savePets.setOnClickListener(v -> savePets());
+        binding.restorePets.setOnClickListener(v -> restorePets());
     }
 
     /** Fetches JSON as text; no Java Pet objects are created here. */

         queue.add(request);
     }
 
+    /** Persists a JSON representation of the current objects, including in-memory edits. */
+    private void savePets() {
+        String savedJson = gson.toJson(pets);
+        getPreferences(MODE_PRIVATE).edit().putString("pets", savedJson).apply();
+        binding.jsonInput.setText(savedJson);
+        binding.objectStatus.setText("Saved " + pets.length + " animals as JSON text");
+    }
+
+    /** Restores text first, then reconstructs objects through the existing parser. */
+    private void restorePets() {
+        String savedJson = getPreferences(MODE_PRIVATE).getString("pets", "[]");
+        binding.jsonInput.setText(savedJson);
+        parsePets();
+    }
+
     /** Keeps HTTP error bodies visible and distinguishes them from connection failures. */
     private void showError(VolleyError error) {
         NetworkResponse response = error.networkResponse;