diff --git a/src/net/micode/notes/data/Contact.java b/src/net/micode/notes/data/Contact.java
index 64fc9e7..f737c15 100644
--- a/src/net/micode/notes/data/Contact.java
+++ b/src/net/micode/notes/data/Contact.java
@@ -37,6 +37,7 @@ public class Contact {//创建类
             + " WHERE min_match = '+')";
 
     public static String getContact(Context context, String phoneNumber) {
+        //初始化缓存
         if(sContactCache == null) {
             sContactCache = new HashMap<String, String>();
         }