diff --git a/tangram/src/main/java/com/tmall/wireless/tangram/support/ExposureSupport.java b/tangram/src/main/java/com/tmall/wireless/tangram/support/ExposureSupport.java
index 32c3c19..d81c275 100644
--- a/tangram/src/main/java/com/tmall/wireless/tangram/support/ExposureSupport.java
+++ b/tangram/src/main/java/com/tmall/wireless/tangram/support/ExposureSupport.java
@@ -93,10 +93,7 @@ public abstract class ExposureSupport {
     private void findTraceMethods(Method[] methods) {
         for (Method method : methods) {
             String methodName = method.getName();
-            if (!methodName.equals(ON_TRACE_METHOD_NAME) && methodName.startsWith(
-                    ON_TRACE_METHOD_NAME) ||
-                    (methodName.startsWith(ON_TRACE_METHOD_PREFIX) && methodName.endsWith(
-                            ON_TRACE_METHOD_POSTFIX))) {
+            if (isValidTraceMethodName(methodName)) {
                 int modifiers = method.getModifiers();
                 if ((modifiers & Modifier.PUBLIC) != 0 && (modifiers & MODIFIERS_IGNORE) == 0) {
                     Class<?>[] parameterTypes = method.getParameterTypes();
@@ -116,13 +113,15 @@ public abstract class ExposureSupport {
         }
     }
 
+    private boolean isValidTraceMethodName(String methodName) {
+        return !methodName.equals(ON_TRACE_METHOD_NAME) && methodName.startsWith(ON_TRACE_METHOD_NAME) ||
+            (methodName.startsWith(ON_TRACE_METHOD_PREFIX) && methodName.endsWith(ON_TRACE_METHOD_POSTFIX));
+    }
+
     private void findExposureMethods(Method[] methods) {
         for (Method method : methods) {
             String methodName = method.getName();
-            if (!methodName.equals(ON_EXPOSURE_METHOD_NAME) && methodName.startsWith(
-                    ON_EXPOSURE_METHOD_NAME) ||
-                    (methodName.startsWith(ON_EXPOSURE_METHOD_PREFIX) && methodName.endsWith(
-                            ON_EXPOSURE_METHOD_POSTFIX))) {
+            if (isValidExposureMethodName(methodName)) {
                 int modifiers = method.getModifiers();
                 if ((modifiers & Modifier.PUBLIC) != 0 && (modifiers & MODIFIERS_IGNORE) == 0) {
                     Class<?>[] parameterTypes = method.getParameterTypes();
@@ -142,6 +141,11 @@ public abstract class ExposureSupport {
         }
     }
 
+    private boolean isValidExposureMethodName(String methodName) {
+        return !methodName.equals(ON_EXPOSURE_METHOD_NAME) && methodName.startsWith(ON_EXPOSURE_METHOD_NAME) ||
+            (methodName.startsWith(ON_EXPOSURE_METHOD_PREFIX) && methodName.endsWith(ON_EXPOSURE_METHOD_POSTFIX));
+    }
+
     /**
      * enable opt mode, users route exposure handler by themselves, otherwise exposure handler is routed by inner and invoked by reflection
      * @param optimizedMode true to enable opt mode
diff --git a/tangram/src/main/java/com/tmall/wireless/tangram/support/SimpleClickSupport.java b/tangram/src/main/java/com/tmall/wireless/tangram/support/SimpleClickSupport.java
index 08bf234..986c365 100644
--- a/tangram/src/main/java/com/tmall/wireless/tangram/support/SimpleClickSupport.java
+++ b/tangram/src/main/java/com/tmall/wireless/tangram/support/SimpleClickSupport.java
@@ -86,8 +86,7 @@ public abstract class SimpleClickSupport {
     private void findClickMethods(Method[] methods) {
         for (Method method : methods) {
             String methodName = method.getName();
-            if (!methodName.equals(ON_CLICK_METHOD_NAME) && methodName.startsWith(ON_CLICK_METHOD_NAME) ||
-                    (methodName.startsWith(ON_CLICK_METHOD_PREFIX) && methodName.endsWith(ON_CLICK_METHOD_POSTFIX))) {
+            if (isValidMethodName(methodName)) {
                 int modifiers = method.getModifiers();
                 if ((modifiers & Modifier.PUBLIC) != 0 && (modifiers & MODIFIERS_IGNORE) == 0) {
                     Class<?>[] parameterTypes = method.getParameterTypes();
@@ -113,6 +112,11 @@ public abstract class SimpleClickSupport {
         }
     }
 
+    private boolean isValidMethodName(String methodName) {
+        return !methodName.equals(ON_CLICK_METHOD_NAME) && methodName.startsWith(ON_CLICK_METHOD_NAME) ||
+            (methodName.startsWith(ON_CLICK_METHOD_PREFIX) && methodName.endsWith(ON_CLICK_METHOD_POSTFIX));
+    }
+
     /**
      * Handler click event on item
      *