diff --git a/SPkey.java b/SPkey.java
new file mode 100644
index 0000000..40d2223
--- /dev/null
+++ b/SPkey.java
@@ -0,0 +1,8 @@
+package com.example.activity;
+
+
+public class SPkey {
+    //    Log 打印的 tag
+    public static final String UserName = "username";
+
+}