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POHow can I send cpp callback function pointer to java
 

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    <p>I am working on android application which is written in cpp (cocos2dx) Now I'm doing a facebook module which has to be implemented in java.</p> <p>The facebook calls are asynchronic so I cannot know when the action is completed unless I'll have a callback from the java part to the cpp.</p> <p>For example:</p> <p>The JNI part should look like something like that:</p> <pre><code>void CCAndroidApplication::login2Facebook() { JniMethodInfo minfo; if(JniHelper::getStaticMethodInfo(minfo, "org/cocos2dx/example/myandroidtest", "login2Facebook", "(**POINTER TO CALLBACK METHOD DidLogin()**)V")) { minfo.env-&gt;CallStaticVoidMethod(minfo.classID, minfo.methodID); minfo.env-&gt;DeleteLocalRef(minfo.classID); } } </code></pre> <p>and the java part should look like:</p> <pre><code>public static void login2Facebook(**POINTER TO native CALLBACK METHOD DidLogin()**) Session.openActiveSession(me, true, new Session.StatusCallback() { @Override public void call(Session session, SessionState state, Exception exception) { mSession = session; if (session.isOpened()) { Request.executeMeRequestAsync(session, new Request.GraphUserCallback() { @Override public void onCompleted(GraphUser user, Response response) { if (user != null) { **Call nativeDidLogin()**; } } }); } } }); } </code></pre> <p>It is also fine if I can send cpp object that contains the method like</p> <pre><code>class delgateMethods { public: void didLogin(); } </code></pre> <p>and call it from the java.</p> <p>My question is: Is it possible to send a pointer to function over the JNI and call it in the java part?</p> <p>Thanks</p>
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