diff --git a/README.md b/README.md
index 25f28e2..24add59 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ Pre-requisites
 Android SDK 21 or Higher
 Build Tools version 21.1.2
 Android Support AppCompat 22.2.0
+Android Support Annotations 22.2.0
 
 Getting Started
 ---------------
diff --git a/app/build.gradle b/app/build.gradle
index 19167f9..28b1396 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -22,4 +22,5 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile 'com.android.support:appcompat-v7:21.0.2'
+    compile 'com.android.support:support-annotations:22.0.0'
 }
diff --git a/app/src/main/java/com/example/android/sunshine/app/sync/SunshineSyncAdapter.java b/app/src/main/java/com/example/android/sunshine/app/sync/SunshineSyncAdapter.java
index 2266393..63f2e3c 100644
--- a/app/src/main/java/com/example/android/sunshine/app/sync/SunshineSyncAdapter.java
+++ b/app/src/main/java/com/example/android/sunshine/app/sync/SunshineSyncAdapter.java
@@ -22,6 +22,7 @@ import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+import android.support.annotation.IntDef;
 import android.support.v4.app.NotificationCompat;
 import android.support.v4.app.TaskStackBuilder;
 import android.text.format.Time;
@@ -40,6 +41,8 @@ import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.util.Vector;
@@ -67,6 +70,17 @@ public class SunshineSyncAdapter extends AbstractThreadedSyncAdapter {
     private static final int INDEX_MIN_TEMP = 2;
     private static final int INDEX_SHORT_DESC = 3;
 
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef({LOCATION_STATUS_OK, LOCATION_STATUS_SERVER_DOWN, LOCATION_STATUS_SERVER_INVALID,  LOCATION_STATUS_UNKNOWN})
+    public @interface LocationStatus {}
+
+    public static final int LOCATION_STATUS_OK = 0;
+    public static final int LOCATION_STATUS_SERVER_DOWN = 1;
+    public static final int
+            LOCATION_STATUS_SERVER_INVALID = 2;
+    public static final int
+            LOCATION_STATUS_UNKNOWN = 3;
+
     public SunshineSyncAdapter(Context context, boolean autoInitialize) {
         super(context, autoInitialize);
     }