diff --git a/updater_sample/src/com/example/android/systemupdatersample/util/UpdateEngineErrorCodes.java b/updater_sample/src/com/example/android/systemupdatersample/util/UpdateEngineErrorCodes.java
index f06ddf7..7d55ff8 100644
--- a/updater_sample/src/com/example/android/systemupdatersample/util/UpdateEngineErrorCodes.java
+++ b/updater_sample/src/com/example/android/systemupdatersample/util/UpdateEngineErrorCodes.java
@@ -36,6 +36,7 @@
     */
     public static final int UNKNOWN = -1;
     public static final int UPDATED_BUT_NOT_ACTIVE = 52;
+    public static final int USER_CANCELLED = 48;
 
     private static final SparseArray<String> CODE_TO_NAME_MAP = new SparseArray<>();
 
@@ -61,7 +62,7 @@
      * Completion codes returned by update engine indicating that the update
      * was successfully applied.
      */
-    private static final Set<Integer> SUCCEEDED_COMPLETION_CODES = new HashSet<Integer>(
+    private static final Set<Integer> SUCCEEDED_COMPLETION_CODES = new HashSet<>(
             Arrays.asList(UpdateEngine.ErrorCodeConstants.SUCCESS,
                     // UPDATED_BUT_NOT_ACTIVE is returned when the payload is
                     // successfully applied but the
diff --git a/updater_sample/src/com/example/android/systemupdatersample/util/UpdaterStates.java b/updater_sample/src/com/example/android/systemupdatersample/util/UpdaterStates.java
new file mode 100644
index 0000000..fc20a79
--- /dev/null
+++ b/updater_sample/src/com/example/android/systemupdatersample/util/UpdaterStates.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.systemupdatersample.util;
+
+import android.util.SparseArray;
+
+/**
+ * SystemUpdaterSample app state.
+ */
+public class UpdaterStates {
+
+    public static final int IDLE = 0;
+    public static final int ERROR = 1;
+    public static final int RUNNING = 2;
+    public static final int PAUSED = 3;
+    public static final int FINISHED = 4;
+
+    private static final SparseArray<String> STATE_MAP = new SparseArray<>();
+
+    static {
+        STATE_MAP.put(0, "IDLE");
+        STATE_MAP.put(1, "ERROR");
+        STATE_MAP.put(2, "RUNNING");
+        STATE_MAP.put(3, "PAUSED");
+        STATE_MAP.put(4, "FINISHED");
+    }
+
+    /**
+     * converts status code to status name
+     */
+    public static String getStateText(int state) {
+        return STATE_MAP.get(state);
+    }
+
+    private UpdaterStates() {}
+}