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<span style="font-family: Arial, Helvetica, sans-serif;">步骤一:导入JniHelper.h头文件。</span>
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID) #include "JniHelper.h" #endif;此时会遇到JniHelper.h头文件无法找到的问题,须要加入附加包括文件夹就可以解决这个问题。详细操作过程例如以下:右击项目---->c/c++---->常规---->附加包括文件夹---->加入JniHelper.h所在的路径就可以,eg:E:\安卓开发工作空间\cocos2d-x-2.2\cocos2dx\platform\android\jni。
<span style="font-size:18px;">void HelloWorld::fun()
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
JniMethodInfo methodInfo;
bool isHave = JniHelper::getStaticMethodInfo(methodInfo,
"org/cocos2dx/hellocpp/HelloCpp","showAd","()V");
if(isHave)
{
methodInfo.env->CallStaticVoidMethod(methodInfo.classID,methodInfo.methodID);
}
#endif
}</span>一定要加上平台推断语句。否则会出现下面bug。(详细怎样调用,请參见相关文档)<span style="font-size:18px;">错误 2 error LNK2019: 无法解析的外部符号 "__declspec(dllimport) public: static bool __cdecl cocos2d::JniHelper::getStaticMethodInfo(struct cocos2d::JniMethodInfo_ &,char const *,char const *,char const *)" (__imp_? getStaticMethodInfo@JniHelper@cocos2d@@SA_NAAUJniMethodInfo_@2@PBD11@Z),该符号在函数 "public: void __thiscall HelloWorld::fun (void)" (?fun@HelloWorld@@QAEXXZ) 中被引用 E:\安卓开发工作空间\cocos2d-x-2.2\projects\jni2\proj.win32\HelloWorldScene.obj HelloCpp</span>
<span style="font-size:18px;">#pragma once #include<android/log.h> #define LOG_TAG "debug log" #define LOGI(fmt, args...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, fmt, ##args) #define LOGD(fmt, args...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, fmt, ##args) #define LOGE(fmt, args...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, fmt, ##args) </span>
<span style="font-size:18px;">"E:\\迅雷下载\\android-ndk-r9-windows-x86\\android-ndk-r9\\ndk-build.cmd" Android NDK: WARNING:E:\安卓开发工作空间\cocos2d-x-2.2\/cocos2dx/Android.mk:cocos2dx_static: LOCAL_LDLIBS is always ignored for static libraries "Compile++ thumb : cocos2dcpp_shared <= HelloWorldScene.cpp jni/../../Classes/HelloWorldScene.cpp:3:23: fatal error: JniHelper.h: No such file or directory compilation terminated. make: *** [obj/local/armeabi/objs/cocos2dcpp_shared/__/__/Classes/HelloWorldScene.o] Error 1</span>
<span style="font-size:18px;">LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := cocos2dcpp_shared LOCAL_MODULE_FILENAME := libcocos2dcpp LOCAL_SRC_FILES := hellocpp/main.cpp ../../Classes/AppDelegate.cpp ../../Classes/HelloWorldScene.cpp LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../Classes E:\安卓开发工作空间\cocos2d-x-2.2\cocos2dx\platform\android\jni LOCAL_WHOLE_STATIC_LIBRARIES += cocos2dx_static LOCAL_WHOLE_STATIC_LIBRARIES += cocosdenshion_static LOCAL_WHOLE_STATIC_LIBRARIES += box2d_static LOCAL_WHOLE_STATIC_LIBRARIES += chipmunk_static LOCAL_WHOLE_STATIC_LIBRARIES += cocos_extension_static LOCAL_LDLIBS += -L$(SYSROOT)/usr/lib -llog include $(BUILD_SHARED_LIBRARY) $(call import-module,cocos2dx) $(call import-module,cocos2dx/platform/third_party/android/prebuilt/libcurl) $(call import-module,CocosDenshion/android) $(call import-module,extensions) $(call import-module,external/Box2D) $(call import-module,external/chipmunk)</span>
<span style="font-size:18px;">package org.cocos2dx.hellocpp;
import org.cocos2dx.lib.Cocos2dxActivity;
import org.cocos2dx.lib.Cocos2dxGLSurfaceView;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import com.manage.LA;
public class HelloCpp extends Cocos2dxActivity {
/**
* 保存当前Activity实例, 静态变量
*/
private static Context mActivity = null;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mActivity = this;
LA.initSDK(mActivity, "1005020");
Log.i("HelloCpp",
"onCreate");
}
public Cocos2dxGLSurfaceView onCreateView() {
Cocos2dxGLSurfaceView glSurfaceView = new Cocos2dxGLSurfaceView(this);
// HelloCpp should create stencil buffer
glSurfaceView.setEGLConfigChooser(5, 6, 5, 0, 16, 8);
return glSurfaceView;
}
/**
* 显示广告
*/
public static void showAd() {
mHandler.sendEmptyMessage(0);
Log.i("HelloCpp", "showAd");
}
public static Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
super.handleMessage(msg);
switch (msg.what) {
case 0:
LA.showAD1(mActivity);
break;
}
}
};
static {
System.loadLibrary("cocos2dcpp");
}
}
</span>11.Cocos2dx2.2下使用JNI技术调用jar包里面的一些方法遇到的一些问题及解决方式。
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原文地址:http://www.cnblogs.com/gcczhongduan/p/4203957.html