Registering native Layer Call in registerNative fails

Issue

I have a java file with the following native api signature. ( First.java)

public static native int nativePreview(int id, Surface surface);
public static native int nativetest(int id);

and in JNI File,

static JNINativeMethod methods [] = {
        { "nativetest", "(I)I", (void *)nativetest},

        { "nativePreview", "(IJLandroid/view/Surface;)I", (void *) nativePreview},

}, 

Respective Definitons in JNI File.

static jint nativetest(JNIEnv *env, jobject thiz, jint myid)
{
  // code..
}


static jint nativePreview(JNIEnv *env, jobject thiz, jint myid, jobject surface)
{
    // code 
}

For the native Registration i used the below call on

env->RegisterNatives(javaConsumerClass, methods, sizeof(methods) / sizeof(methods[0]));

PROBLEM:

Interestingly, have receive the below error:

java.lang.NoSuchMethodError: no static or non-static method "Lcom/fd/sample/First;.nativePreview(IJLandroid/view/Surface;)I"

I have remove nativePreview() call, the registration is successfully done.

Question:

Have i done in right way of passing surface, or Are there anything that i have overlooked?. please help me.

Solution

Here you're saying that your function takes an int, a long, and an android.view.Surface, and returns an int:

(IJLandroid/view/Surface;)I

But that doesn't match with your definition of nativePreview:

static jint nativePreview(JNIEnv *env, jobject thiz, jint myid, jobject surface)

There's no jlong in your argument list here.

Answered By - Michael