在Android NDK中跨线程共享JavaVM*

JavaVM* g_JavaVM = nullptr;

JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved)
{
    g_JavaVM = vm;
    return JNI_VERSION_1_6;
}

JavaVM* GetJavaVM()
{
    if (g_JavaVM == nullptr)
    {
        // 调用JNI_OnLoad函数获取JavaVM*指针
        JNIEnv* env = nullptr;
        jint result = JNI_OnLoad(env, nullptr);
        if (result != JNI_VERSION_1_6)
        {
            return nullptr;
        }
    }
    return g_JavaVM;
}

JavaVM* javaVM = GetJavaVM();
if (javaVM != nullptr)
{
    // 使用JavaVM*指针进行相关操作
}