Android JNI在应用程序中检测到错误:调用JNI GetMethodID时出现挂起异常java.lang.ClassNotFoundException:DIND';我找不到课
我得到以下错误: JNI在应用程序中检测到错误:调用JNI GetMethodID时出现挂起的异常java.lang.ClassNotFoundException:在路径:DexPathList[[zip文件”/system/framework/sample.jar]],NativelLibraryDirectory=[/vendor/lib,/system/lib]]上未找到类“package.name.class” 以下是有关错误的详细信息:Android JNI在应用程序中检测到错误:调用JNI GetMethodID时出现挂起异常java.lang.ClassNotFoundException:DIND';我找不到课,android,android-ndk-r5,Android,Android Ndk R5,我得到以下错误: JNI在应用程序中检测到错误:调用JNI GetMethodID时出现挂起的异常java.lang.ClassNotFoundException:在路径:DexPathList[[zip文件”/system/framework/sample.jar]],NativelLibraryDirectory=[/vendor/lib,/system/lib]]上未找到类“package.name.class” 以下是有关错误的详细信息: `jmethodID MethodId;
`jmethodID MethodId;
JNIEnv * env;
int nStatus = gVM->GetEnv((void**)&env, JNI_VERSION_1_6);
int nResult = attachStatus(nStatus, &env);
LOG_HM("::attach status = %d::\n", nResult);
if (nResult == ATTACH_FAILED) {
LOG_HM("Attach failed");
return ;
}
jclass classClass = env->GetObjectClass(gTotalUsageClass);
auto classLoaderClass = env->FindClass("java/lang/ClassLoader");
auto getClassLoaderMethod = env->GetMethodID(classClass, "getClassLoader",
"()Ljava/lang/ClassLoader;");
gClassLoader = env->CallObjectMethod(gTotalUsageClass, getClassLoaderMethod);
gFindClassMethod = env->GetMethodID(classLoaderClass, "findClass",
"(Ljava/lang/String;)Ljava/lang/Class;");
jclass totalUsage = static_cast<jclass>(env->CallObjectMethod(gClassLoader, gFindClassMethod, env->NewStringUTF("com/a/a/TotalUsageInfo")));
TotalUsageInfo *info = NULL;
jobject jUsageInfo = NULL;
jlong noOfProc = 0;
jlong memTotal = 0;
jlong memFree = 0;
jlong cache = 0;
jlong buffer = 0;
jlong cpuUtil = 0;
//jclass totalUsage = env->FindClass("com/a/a/TotalUsageInfo");
if (totalUsage == NULL) {
LOG_HM("Class TotalUsageInfo not Found \n");
nResult = FAIL;
detachThread(nResult);
return;
}
else {
LOG_HM("Class TotalUsageInfo Found \n");
}
jmethodID constructor = env->GetMethodID(totalUsage, "<init>", "(JJJJJJ)V");
if (NULL == constructor) {
LOG_HM("JNIGetTotalUsageInfo::TotalUsageInfo constructor not found\n");
nResult = FAIL;
detachThread(nResult);
return ;
}`
`jmethodID;
JNIEnv*env;
int nStatus=gVM->GetEnv((void**)和env,JNI_版本1_6);
int nResult=附件状态(nStatus和env);
日志(“::附加状态=%d::\n”,nResult);
如果(nResult==连接失败){
LOG_HM(“连接失败”);
返回;
}
jclass classClass=env->GetObjectClass(gTotalUsageClass);
自动类装入器class=env->FindClass(“java/lang/ClassLoader”);
自动getClassLoaderMethod=env->GetMethodID(classClass,“getClassLoader”,
“()Ljava/lang/ClassLoader;”;
gClassLoader=env->CallObjectMethod(gTotalUsageClass,getClassLoaderMethod);
gFindClassMethod=env->GetMethodID(classLoaderClass,“findClass”,
“(Ljava/lang/String;)Ljava/lang/Class;”;
jclass totalUsage=static_cast(env->CallObjectMethod(gClassLoader,gFindClassMethod,env->NewStringUTF(“com/a/a/TotalUsageInfo”));
TotalUsageInfo*info=NULL;
jobject jUsageInfo=NULL;
jlong noOfProc=0;
jlong memTotal=0;
jlong memFree=0;
jlong缓存=0;
jlong缓冲区=0;
jlong cpuUtil=0;
//jclass totalUsage=env->FindClass(“com/a/a/TotalUsageInfo”);
if(totalUsage==NULL){
日志(未找到类TotalUsageInfo);
nResult=失败;
拆卸螺纹(nResult);
返回;
}
否则{
LOG_HM(“找到类TotalUsageInfo”);
}
jmethodID constructor=env->GetMethodID(totalUsage,”,“(jj)V”);
if(NULL==构造函数){
日志\u HM(“未找到JNIGETTOTOTALUSAGEINFO::TotalUsageInfo构造函数\n”);
nResult=失败;
拆卸螺纹(nResult);
返回;
}`
<代码> > p>为了调用<代码> GETMaoDoD< /Cord>,您需要将C++线程正确地连接到主java线程。像这样:
bool attachThreadToJVM(JNIEnv **env)
{
bool ret = false;
if(globalJavaVm != NULL) {
JavaVMAttachArgs vmAttachArgs;
vmAttachArgs.version = JNI_VERSION_1_6;
vmAttachArgs.name = NULL;
vmAttachArgs.group = NULL;
jint attachRet = globalJavaVm->AttachCurrentThread(env, &vmAttachArgs);
if(attachRet == 0)
{
ret = true;
}
}
return ret;
}
这是坠机日志。我试图从本地C++线程回调到java模块。我已经通过调用AttachCurrentThread连接到主线程,但是当我从本机线程调用GetMethodID函数时,仍然会出现此崩溃。传递给GetMEthodID的jclass不是空的。如果您能提供中断的确切行,这将非常有用,这里有些东西看起来可疑。我想你的问题在于方法的精确性。但不是100%确定。如果您提供一个更准确的断点,这会有所帮助。您的本机库似乎还没有根据日志构建。查看此链接以构建本机库-@KeyurThumar我有一个类似的问题,我的本机库已构建。真正的原因是C++线程没有被适当地连接到java主线程……你必须提到JNI中的活动包名称。请参阅此链接。在该链接中,请参见如何编写该方法。具有活动名称的方法(包括包名称)
bool attachThreadToJVM(JNIEnv **env)
{
bool ret = false;
if(globalJavaVm != NULL) {
JavaVMAttachArgs vmAttachArgs;
vmAttachArgs.version = JNI_VERSION_1_6;
vmAttachArgs.name = NULL;
vmAttachArgs.group = NULL;
jint attachRet = globalJavaVm->AttachCurrentThread(env, &vmAttachArgs);
if(attachRet == 0)
{
ret = true;
}
}
return ret;
}