From eea09d60f76c9e434984638e7beaab0c73d9fd0f Mon Sep 17 00:00:00 2001
From: boyu0 <boyuzero@gmail.com>
Date: Mon, 18 Nov 2013 14:33:24 +0800
Subject: [PATCH] fix keypad test crash bug

---
 cocos/2d/CCEventListenerKeyboard.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cocos/2d/CCEventListenerKeyboard.cpp b/cocos/2d/CCEventListenerKeyboard.cpp
index c947a43e36..77ce94d705 100644
--- a/cocos/2d/CCEventListenerKeyboard.cpp
+++ b/cocos/2d/CCEventListenerKeyboard.cpp
@@ -31,7 +31,11 @@ NS_CC_BEGIN
 
 bool EventListenerKeyboard::checkAvailable()
 {
-    CCASSERT(onKeyPressed && onKeyReleased, "");
+    if (onKeyPressed == nullptr && onKeyReleased == nullptr)
+    {
+        CCASSERT(false, "Invalid EventListenerKeyboard!");
+        return false;
+    }
     
     return true;
 }