在为C SDL库创建java包装器时获取此异常:
线程“main”中的异常java.lang.UnsatisfiedLinkError: com.sdl4j.renderer.SDL_Renderer.SDL_CreateRenderer(LCOM / sdl4j /窗/ SDL_Window; II)LCOM / sdl4j /渲染器/ SDL_Renderer;
Java Caller(第一种方法很好,在两个java / c ++方面看起来都是100%相似):
SDL_Window win = SDL_CreateWindow("Hello World!", 0, 0, 1024, 768, SDL_WindowFlags.SDL_WINDOW_SHOWN);
SDL_Renderer ren = SDL_CreateRenderer(win, -1, SDL_RendererFlags.SDL_RENDERER_ACCELERATED | SDL_RendererFlags.SDL_RENDERER_PRESENTVSYNC);
Native Java功能:
public static native SDL_Renderer SDL_CreateRenderer(SDL_Window window, int index, int flags);
C标题:
* Class: com_sdl4j_renderer_SDL_Renderer
* Method: SDL_CreateRenderer
* Signature: (Lcom/sdl4j/window/SDL_Window;II)Lcom/sdl4j/renderer/SDL_Renderer;
*/
JNIEXPORT jobject JNICALL Java_com_sdl4j_renderer_SDL_1Renderer_SDL_1CreateRenderer
(JNIEnv *, jclass, jobject, jint, jint);
C ++实现:
JNIEXPORT jobject JNICALL Java_com_sdl4j_renderer_SDL_1Renderer_SDL_1CreateRenderer(JNIEnv *env, jclass , jobject win, jint index, jint flags) {
cout << "Create renderer: " << endl;
}
看不出为什么它不起作用,请你帮忙。
干杯
答案 0 :(得分:0)
如果您有重载方法,则需要具有“完整”JNI方法名称 方法名称还应包括参数类型(因此JNI可以区分重载方法)
JNIEXPORT jobject JNICALL Java_com_sdl4j_renderer_SDL_1Renderer_SDL_1CreateRenderer__Lcom_sdl4j_window_SDL_1Window_2II
(JNIEnv *, jclass, jobject, jint, jint);
从技术上讲,它是相同的方法名称,然后添加2个下划线和参数类型。
_ = /
_1 = _
_2 = ;
_00024 = $