的Andr​​oid NDK，我用下面的命令来生成JNI头，

Android NDK, I used the following command to generate the jni header,

C:\eclipse_workspace\C_Google_FaceDetect\bin>javah -jni -verbose -classpath C:\Android_SDK\platforms\android-10;C:\eclipse_workspace\C_Google_FaceDetect\src;. -d C:\eclipse_workspace\C_Google_FaceDetect\jni c.google.facedetect.FaceDetect

问题是即使我把一切都很好，我得到了以下错误

The problem is even though I set everything well, I'm getting the following error

没有发现本地LC /谷歌/ facedetect / FaceDetect执行;由Matchi.com提供回到codeYUV（[I [BII）V

No implementation found for native Lc/google/facedetect/FaceDetect;.decodeYUV([I[BII)V

主题ID = 1：螺纹未捕获的异常（组= 0x40018578）退出

threadid=1:thread exiting with uncaught exception (group=0x40018578)

致命异常：主要java.lang.UnsatisfiedLinkError中：德codeYUV

FATAL EXCEPTION: main java.lang.UnsatisfiedLinkError: decodeYUV

我试图寻找什么是错的，我发现，在c_google_facedetect_FaceDetect.h JNI头文件，我有一个语法错误，其实（即使它生成的）

I tried looking for what's wrong, and I found that in the c_google_facedetect_FaceDetect.h jni header file, I have a syntax error actually (even though it's generated)

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h> /* Header for class c_google_facedetect_FaceDetect */

#ifndef _Included_c_google_facedetect_FaceDetect
#define _Included_c_google_facedetect_FaceDetect
#ifdef __cplusplus extern "C" {
#endif
#undef c_google_facedetect_FaceDetect_CAMERA_WIDTH
#define c_google_facedetect_FaceDetect_CAMERA_WIDTH 480L
#undef c_google_facedetect_FaceDetect_CAMERA_HEIGHT
#define c_google_facedetect_FaceDetect_CAMERA_HEIGHT 320L
/*
* Class:     c_google_facedetect_FaceDetect
* Method:    decodeYUV
* Signature: ([I[BII)V
*/

JNIEXPORT void JNICALL Java_c_google_facedetect_FaceDetect_decodeYUV(JNIEnv *, jobject, jintArray, jbyteArray, jint, jint);

#ifdef __cplusplus }
#endif
#endif

在JNIEXPORT无效JNICALL ....行有语法错误，或许这就是造成所有的错误？

The "JNIEXPORT void JNICALL ...." line has a syntax error, maybe that's what causing all the errors ?

我的Andr​​oid.mk文件如下：

My Android.mk file is as follows:

LOCAL_PATH：= $（叫我-DIR）

LOCAL_PATH := $(call my-dir)

中包括$（CLEAR_VARS）

include $(CLEAR_VARS)

LOCAL_MODULE：=脸检测

LOCAL_MODULE := face-detect

LOCAL_SRC_FILES：=面detect.c

LOCAL_SRC_FILES := face-detect.c

中包括$（BUILD_SHARED_LIBRARY）

include $(BUILD_SHARED_LIBRARY)

更新我的唯一的java文件称为FaceDetect.java并包含有以下code

UPDATE My one and only java file is called FaceDetect.java and includes the following code

public class FaceDetect extends Activity implements SurfaceHolder.Callback, Camera.PreviewCallback
{
static
    {
        Log.d("mytag", "before_lib");
        System.loadLibrary("face-detect");
        Log.d("mytag", "after_lib");
    }
public static native void decodeYUV(int[] out, byte[] fg, int width, int height);
}

此外，Eclipse不说语法错误是什么，它​​只是强调了JNIEXPORT线，并说语法错误

Also, Eclipse doesn't say what the syntax error is, it only underlines the JNIExport line and says syntax error

另一个更新来回答这个问题我确实已检查该库被加载，这里是logcat的

Another UPDATE to answer the question I have indeed checked that the library is being loaded, here is the logcat

13 07-16：31：43.257：D / MyTag的（25188）：before_lib 07-16 13：31：43.281：D / dalvikvm（25188）：试图加载的lib /data/data/c.google.facedetect/lib/libface-detect.so 0x40517808 07-16 13：31：43.281：D / dalvikvm（25188）：增加了共享库/data/data/c.google.facedetect/lib/libface-detect.so 0x40517808 07-16 13：31：43.281：D / dalvikvm（25188）：无JNI_OnLoad在/data/data/c.google.facedetect/lib/libface-detect.so 0x40517808发现，跳过初始化07-16 13：31：43.281：D / MyTag的（25188）：after_lib

07-16 13:31:43.257: D/mytag(25188): before_lib 07-16 13:31:43.281: D/dalvikvm(25188): Trying to load lib /data/data/c.google.facedetect/lib/libface-detect.so 0x40517808 07-16 13:31:43.281: D/dalvikvm(25188): Added shared lib /data/data/c.google.facedetect/lib/libface-detect.so 0x40517808 07-16 13:31:43.281: D/dalvikvm(25188): No JNI_OnLoad found in /data/data/c.google.facedetect/lib/libface-detect.so 0x40517808, skipping init 07-16 13:31:43.281: D/mytag(25188): after_lib

推荐答案

有没有语法错误。检查是否加载的本地库，它已successfuly加载。

There is no syntax error. Check that you are loading your native library and that it has loaded successfuly.