Cocos2dx/AndroidNative連携/メソッド呼出

サンプルコード

-Classes/NativeLauncher.h

#ifndef Helloworld_NativeLauncher_h
#define Helloworld_NativeLauncher_h
class NativeLauncher
{
public:
    static void launchNative();
};
#endif

-Classes/NativeLauncher.cpp

#include "NativeLauncher.h"
#include <jni.h>
#include "platform/android/jni/JniHelper.h"
#define CLASS_NAME "org/cocos2dx/cpp/AppActivity"
void NativeLauncher::launchNative()
{
    cocos2d::JniMethodInfo t;
    if (cocos2d::JniHelper::getStaticMethodInfo(t, CLASS_NAME, "launchNative", "()V")) {
        t.env->CallStaticVoidMethod(t.classID, t.methodID);
        t.env->DeleteLocalRef(t.classID);
    }
}

-Classes/HelloWorldScene.h

class HelloWorld : public cocos2d::Layer
{
public:
    static cocos2d::Scene* createScene();
    virtual bool init();
    // a selector callback
    void menuCloseCallback(cocos2d::Ref* pSender);
    void menuLogCallback(cocos2d::Ref* pSender);
    // implement the "static create()" method manually
    CREATE_FUNC(HelloWorld);
};

-Classes/HelloWorldScene.cpp

#include "NativeLauncher.h"
bool HelloWorld::init()
{
// 略
   auto logItem = MenuItemImage::create(
                                          "CloseNormal.png",
                                          "CloseSelected.png",
                                          CC_CALLBACK_1(HelloWorld::menuLogCallback, this));
   logItem->setPosition(Vec2(origin.x + visibleSize.width - logItem->getContentSize().width/2 ,
                                origin.y + visibleSize.height - logItem->getContentSize().height/2));
   auto logmenu = Menu::create(logItem, NULL);
   logmenu->setPosition(Vec2::ZERO);
   this->addChild(logmenu, 1);
// 略
}
void HelloWorld::menuLogCallback(Ref* pSender)
{
    NativeLauncher::launchNative();
}

-proj.android-studio/app/src/org/cocos2dx/cpp/AppActivity.java

public class AppActivity extends Cocos2dxActivity {
    public static void launchNative()
    {
        System.out.println("launchNative()");
    }
}

-proj.android/jni/Android.mk

LOCAL_SRC_FILES := hellocpp/main.cpp \
                   ../../Classes/AppDelegate.cpp \
                   ../../Classes/HelloWorldScene.cpp \
                   ../../Classes/NativeLauncher.cpp

NativeLauncher.cppを追加

-proj.android-studio/app/jni/Android.mk

LOCAL_SRC_FILES := hellocpp/main.cpp \
                   ../../../Classes/AppDelegate.cpp \
                   ../../../Classes/HelloWorldScene.cpp \
                   ../../../Classes/NativeLauncher.cpp

NativeLauncher.cppを追加

実行順序

1. AppDelegate.h
2. AppDelegate.cpp
3. HelloWorldScene.h
4. HelloWorldScene.cpp
5. NativeLauncher.h
6. NativeLauncher.cpp

参考

https://rakuishi.com/archives/5817/

cocos error: undefined reference toエラー

Android.mkにファイルを追加した確認する

jni関数公式

https://docs.oracle.com/javase/jp/8/docs/technotes/guides/jni/spec/functions.html