我正在尝试让我的Amazon In-app Purchases SDK的PurchasingObserver的java实现通过本机方法与我的C ++代码进行通信。
PurchasingObserver.java //摘录
public class PurchasingObserver
{
//...
private native void postEvent(int type, String jsonData);
// called by each of the four event handler methods, data is non-null
// also tried it as native synchronized
}
AmazonInAppPurchaseHandler.cpp //摘录
static AmazonInAppPurchaseHandler* AmazonInAppPurchaseHandler::s_pInstance(0); // dumbleton
JNIEXPORT void JNICALL _NativePurchasingObserverPostEvent(JNIEnv* pEnv, jobject obj, jint type, jstring jsonData)
// friend function
{
assert(type >= 0);
assert(type < AmazonInAppPurchaseHandler::kNumEventTypes); // event type is in range
assert(pEnv != 0); // JNI environment is valid
printf("Stuff from the native callback: %d, %p\n", type, jsonData); // never gets printed.
int jsonDataLen(0);
const char* pJsonDataUtfChars(0);
if(jsonData != 0)
{
jsonDataLen = pEnv->GetStringUTFLength(jsonData);
pJsonDataUtfChars = pEnv->GetStringUTFChars(jsonData, 0);
}
assert(s_pInstance != 0); // got AmazonInAppPurchaseHandler instance
s_pInstance->DoCallback(type, jsonDataLen, pJsonDataUtfChars);
pEnv->ReleaseStringUTFChars(jsonData, pJsonDataUtfChars);
}
static const JNINativeMethod karNativeMethod[] =
{
{
"postEvent",
"(ILjava/lang/String;)V",
(void*)&_NativePurchasingObserverPostEvent
}
};
AmazonInAppPurchaseHandler::AmazonInAppPurchaseHandler()
{
assert(s_pInstance == 0); // is only instance
s_pInstance = this;
JNIEnv* pEnv(GetJNIEnv());
assert(pEnv != 0); // got JNI environment
jint result(pEnv->RegisterNatives(cPurchaseObserver, karNativeMethod, 1));
assert(AmazonInAppPurchaseHandler, result == 0); // successfully registered
}
AmazonInAppPurchaseHandler::~AmazonInAppPurchaseHandler()
{
s_pInstance = 0;
}
只要我做任何产生事件的事情,就会发生以下情况: 1,正确调用事件处理程序,它执行日志记录。 2,它还记录“Posting event ...”,这是调用postEvent()之前的最后一件事。 3,程序在libc中与SIGSEGV崩溃。 (它指的是我的申请,但请注意反向网络名称被截断。我不确定这是不寻常的。) 4,永远不会到达C ++ _NativePurchasingObserverPostEvent中的跟踪。
日志:
12-05 10:24:47.380: D/com.mycompany.amazoninapp.PurchasingObserver@41970368(4604): onGetUserIdResponse: (com.amazon.inapp.purchasing.GetUserIdResponse@4196cf98,inquestId: “dcf8e712-078b-4d47-9533-ee9ae544f53d”,getUserIdRequestStatus: “SUCCESSFUL”,userId:“DefaultTestUser”)
12-05 10:24:47.380: D/com.mycompany.amazoninapp.PurchasingObserver@41970368(4604): 发布活动......
12-05 10:24:47.380:A / libc(4604):致命信号11(SIGSEGV)at 0x00000008(代码= 1),线程4604(y.amazoninapp)
12-05 10:24:47.390:I / AmazonSDKTester(3529):发送购买更新 响应广播 ({ “revokedSkus”:[], “偏移量”: “1354703087397”, “状态”: “成功”, “的requestId”: “b9aee42e-4f50-42c4-8a12-ba9eb1d19155”, “isMore”:假 “收据” :[{ “SKU”: “com.mycompany.amazoninapp.ENTI01”, “标记”: “eyJ0eXBlIjoiTk9OQ09OU1VNQUJMRSIsInNrdSI6ImNvbS5wbGF5ZXJ0aHJlZS5hbWF6b25pbmFw \ ncC5FTlRJMDEifQ \ n”, “项目类型”: “题为”}], “用户id”: “DefaultTestUser”})
我经历了正确获取JNI类名和方法签名字符串的迭代(我们已经过了UnsatisfiedLinkErrors);我正在仔细检查null字符串。我的其他JNI工作正常,亚马逊应用程序内购买UI正确显示。保证在注册本机方法之前不会生成事件。
造成撞车的原因是什么?
感谢您提前输入。
答案 0 :(得分:0)
您需要将您的函数声明为使用C
调用约定。将其声明为extern "C"
,如下所示:
extern "C" void _NativePurchasingObserverPostEvent(JNIEnv* pEnv, jobject obj, jint type, jstring jsonData)
答案 1 :(得分:0)
尝试使用javah
在{+ 1}}中创建一个标题,而不是自己编写函数原型。