diff --git a/android/src/main/java/com/wxwx/flutter_alibc/FlutterAlibcHandle.java b/android/src/main/java/com/wxwx/flutter_alibc/FlutterAlibcHandle.java
index dd1b5a9..e2b87c4 100644
--- a/android/src/main/java/com/wxwx/flutter_alibc/FlutterAlibcHandle.java
+++ b/android/src/main/java/com/wxwx/flutter_alibc/FlutterAlibcHandle.java
@@ -19,6 +19,7 @@ import java.util.HashMap;
 
 import android.app.AlertDialog;
 
+import static com.ali.auth.third.core.context.KernelContext.getApplicationContext;
 import static com.wxwx.flutter_alibc.PluginConstants.*;
 import static com.wxwx.flutter_alibc.PluginUtil.*;
 
@@ -490,8 +491,8 @@ public class FlutterAlibcHandle {
 //        AlibcTradeSDK.setShouldUseAlipay(call.argument("isNeed"));
     }
 
-    public void getUdid(MethodCall call,Result result1) {
-        String udid = UTDevice.getUtdid(register.activity().getApplicationContext());
+    public void getUdid(MethodCall call, Result result1) {
+        String udid =  UTDevice.getUtdid(getApplicationContext());
         Map<String, String> resMap = new HashMap();
         resMap.put("udid", udid);
         result1.success(resMap);
diff --git a/android/src/main/java/com/wxwx/flutter_alibc/Params.java b/android/src/main/java/com/wxwx/flutter_alibc/Params.java
new file mode 100644
index 0000000..3f85e8f
--- /dev/null
+++ b/android/src/main/java/com/wxwx/flutter_alibc/Params.java
@@ -0,0 +1,9 @@
+package com.wxwx.flutter_alibc;
+
+import com.ut.device.UTDevice;
+
+import static com.ali.auth.third.core.context.KernelContext.getApplicationContext;
+
+public class Params {
+    static String udid = UTDevice.getUtdid(getApplicationContext());
+}
diff --git a/example/.flutter-plugins-dependencies b/example/.flutter-plugins-dependencies
index f90cd46..5a2b93e 100644
--- a/example/.flutter-plugins-dependencies
+++ b/example/.flutter-plugins-dependencies
@@ -1 +1 @@
-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"flutter_alibc","path":"D:\\\\zy_project\\\\zhiying_flutter_alibc\\\\","dependencies":[]}],"android":[{"name":"flutter_alibc","path":"D:\\\\zy_project\\\\zhiying_flutter_alibc\\\\","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"flutter_alibc","dependencies":[]}],"date_created":"2021-04-09 09:35:59.437953","version":"1.22.1"}
\ No newline at end of file
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"flutter_alibc","path":"/Users/fnuser02/Documents/fnuoProject/yeying/zhiying_flutter_alibc/","dependencies":[]}],"android":[{"name":"flutter_alibc","path":"/Users/fnuser02/Documents/fnuoProject/yeying/zhiying_flutter_alibc/","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"flutter_alibc","dependencies":[]}],"date_created":"2021-04-12 09:20:15.514784","version":"1.22.1"}
\ No newline at end of file