axmol/cocos2dx/platform/android/jni/JniHelper.h

/****************************************************************************
Copyright (c) 2010-2011 cocos2d-x.org

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#ifndef __ANDROID_JNI_HELPER_H__
#define __ANDROID_JNI_HELPER_H__

#include <jni.h>
#include <string>
#include "platform/CCPlatformMacros.h"

NS_CC_BEGIN

typedef struct JniMethodInfo_
{
    JNIEnv *    env;
    jclass      classID;
    jmethodID   methodID;
} JniMethodInfo;

class CC_DLL JniHelper
{
public:
    static void setJavaVM(JavaVM *javaVM);
    static JavaVM* getJavaVM();
    static JNIEnv* getEnv();

    static bool setClassLoaderFrom(jobject nativeActivityInstance);
    static bool getStaticMethodInfo(JniMethodInfo &methodinfo,
                                    const char *className,
                                    const char *methodName,
                                    const char *paramCode);
    static bool getMethodInfo(JniMethodInfo &methodinfo,
                              const char *className,
                              const char *methodName,
                              const char *paramCode);

    static std::string jstring2string(jstring str);

    static jmethodID loadclassMethod_methodID;
    static jobject classloader;

private:
    static bool cacheEnv(JavaVM* jvm);

    static bool getMethodInfo_DefaultClassLoader(JniMethodInfo &methodinfo,
                                                 const char *className,
                                                 const char *methodName,
                                                 const char *paramCode);

    static JavaVM* _psJavaVM;
    static JNIEnv* env;
};

NS_CC_END

#endif // __ANDROID_JNI_HELPER_H__