diff --git a/cocos2dx/platform/android/jni/IMEJni.cpp b/cocos2dx/platform/android/jni/IMEJni.cpp
index 73b535e464..5e3937bb9e 100644
--- a/cocos2dx/platform/android/jni/IMEJni.cpp
+++ b/cocos2dx/platform/android/jni/IMEJni.cpp
@@ -60,13 +60,9 @@ extern "C"
 
     void Java_org_cocos2dx_lib_Cocos2dxRenderer_nativeInsertText(JNIEnv* env, jobject thiz, jstring text)
     {
-        jboolean isCopy = 0;
-        const char* pszText = env->GetStringUTFChars(text, &isCopy);
-        if (isCopy) 
-        {
-            cocos2d::CCIMEDispatcher::sharedDispatcher()->dispatchInsertText(pszText, strlen(pszText));
-            env->ReleaseStringUTFChars(text, pszText);
-        }
+        const char* pszText = env->GetStringUTFChars(text, NULL);
+        cocos2d::CCIMEDispatcher::sharedDispatcher()->dispatchInsertText(pszText, strlen(pszText));
+        env->ReleaseStringUTFChars(text, pszText);
     }
 
     void Java_org_cocos2dx_lib_Cocos2dxRenderer_nativeDeleteBackward(JNIEnv* env, jobject thiz)
diff --git a/cocos2dx/platform/android/jni/JniHelper.cpp b/cocos2dx/platform/android/jni/JniHelper.cpp
index c9690b2873..8d5e6cdc07 100644
--- a/cocos2dx/platform/android/jni/JniHelper.cpp
+++ b/cocos2dx/platform/android/jni/JniHelper.cpp
@@ -161,18 +161,14 @@ extern "C"
     {
         JNIEnv *env = 0;
 
-        jboolean isCopy;
         if (! getEnv(&env))
         {
             return 0;
         }
 
-        const char* chars = env->GetStringUTFChars(jstr, &isCopy);
+        const char* chars = env->GetStringUTFChars(jstr, NULL);
         string ret(chars);
-        if (isCopy)
-        {
-            env->ReleaseStringUTFChars(jstr, chars);
-        }
+        env->ReleaseStringUTFChars(jstr, chars);
 
         return ret;
     }
diff --git a/cocos2dx/platform/android/jni/MessageJni.cpp b/cocos2dx/platform/android/jni/MessageJni.cpp
index 30d4ef2575..a14ca6040f 100644
--- a/cocos2dx/platform/android/jni/MessageJni.cpp
+++ b/cocos2dx/platform/android/jni/MessageJni.cpp
@@ -123,12 +123,8 @@ extern "C"
     //////////////////////////////////////////////////////////////////////////
     void Java_org_cocos2dx_lib_Cocos2dxActivity_nativeSetPaths(JNIEnv*  env, jobject thiz, jstring apkPath)
     {
-        const char* str;
-        jboolean isCopy;
-        str = env->GetStringUTFChars(apkPath, &isCopy);
-        if (isCopy) {
-            cocos2d::CCFileUtils::setResourcePath(str);
-            env->ReleaseStringUTFChars(apkPath, str);
-        }
+        const char* str = env->GetStringUTFChars(apkPath, NULL);
+        cocos2d::CCFileUtils::setResourcePath(str);
+        env->ReleaseStringUTFChars(apkPath, str);
     }
 }
diff --git a/cocos2dx/platform/android/jni/SystemInfoJni.cpp b/cocos2dx/platform/android/jni/SystemInfoJni.cpp
index 259358a7d8..759f4bd710 100644
--- a/cocos2dx/platform/android/jni/SystemInfoJni.cpp
+++ b/cocos2dx/platform/android/jni/SystemInfoJni.cpp
@@ -53,6 +53,7 @@ extern "C"
             t.env->DeleteLocalRef(t.classID);
             CCString *ret = new CCString(JniHelper::jstring2string(str).c_str());
             ret->autorelease();
+            t.env->DeleteLocalRef(str);
 
             LOGD("package name %s", ret->m_sString.c_str());
 
@@ -78,6 +79,7 @@ extern "C"
             t.env->DeleteLocalRef(t.classID);
             CCString *ret = new CCString(JniHelper::jstring2string(str).c_str());
             ret->autorelease();
+            t.env->DeleteLocalRef(str);
 
             LOGD("language name %s", ret.c_str());