Added const char* methods so NULL can be passed.

spine-cocos2dx/3/src/spine/SkeletonRenderer.cpp

@@ -348,6 +348,9 @@ spSlot* SkeletonRenderer::findSlot (const std::string& slotName) const {
 bool SkeletonRenderer::setSkin (const std::string& skinName) {
 	return spSkeleton_setSkinByName(_skeleton, skinName.empty() ? 0 : skinName.c_str()) ? true : false;
 }
+bool SkeletonRenderer::setSkin (const char* skinName) {
+	return spSkeleton_setSkinByName(_skeleton, skinName) ? true : false;
+}
 
 spAttachment* SkeletonRenderer::getAttachment (const std::string& slotName, const std::string& attachmentName) const {
 	return spSkeleton_getAttachmentForSlotName(_skeleton, slotName.c_str(), attachmentName.c_str());
@@ -355,6 +358,9 @@ spAttachment* SkeletonRenderer::getAttachment (const std::string& slotName, cons
 bool SkeletonRenderer::setAttachment (const std::string& slotName, const std::string& attachmentName) {
 	return spSkeleton_setAttachment(_skeleton, slotName.c_str(), attachmentName.empty() ? 0 : attachmentName.c_str()) ? true : false;
 }
+bool SkeletonRenderer::setAttachment (const std::string& slotName, const char* attachmentName) {
+	return spSkeleton_setAttachment(_skeleton, slotName.c_str(), attachmentName) ? true : false;
+}
 
 spSkeleton* SkeletonRenderer::getSkeleton () {
 	return _skeleton;

spine-cocos2dx/3/src/spine/SkeletonRenderer.h

@@ -79,12 +79,16 @@ public:
 	 * attached if the corresponding attachment from the old skin was attached. Returns false if the skin was not found.
 	 * @param skin May be empty string ("") for no skin.*/
 	bool setSkin (const std::string& skinName);
+	/** @param skin May be 0 for no skin.*/
+	bool setSkin (const char* skinName);
 	
 	/* Returns 0 if the slot or attachment was not found. */
 	spAttachment* getAttachment (const std::string& slotName, const std::string& attachmentName) const;
 	/* Returns false if the slot or attachment was not found.
 	 * @param attachmentName May be empty string ("") for no attachment. */
 	bool setAttachment (const std::string& slotName, const std::string& attachmentName);
+	/* @param attachmentName May be 0 for no attachment. */
+	bool setAttachment (const std::string& slotName, const char* attachmentName);
 
 	// --- BlendProtocol
 	virtual void setBlendFunc (const cocos2d::BlendFunc& blendFunc);