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I am trying to follow this

I have declared the JNI function as

JNIEXPORT void JNICALL Java_com_mypackage_myapp_MyJavaClass_Fun(JNIEnv* env, jobject object, jobjectArray stringArray)

And the corresponding Java function in MyJavaClass is declared as:

public native void Fun(String[] strArray);

But its not working for me as I keep getting run time error:

No implementation found for void com.mypackage.myapp.MyJavaClass.Fun(java.lang.String[])

I have also tried declaring Fun as

public native void Fun(List<String> strArray);

And

public native void Fun(ArrayList<String> strArray);

but these also result in same run time error

Improve this question
5
  • Does your log show that the JNI library is loaded successfully? Can you call some other native method? Commented Jul 13, 2016 at 8:31
  • Show us your System.loadLibrary() call Commented Jul 13, 2016 at 8:56
  • Also ensure that there are no overloads for Fun() in java code. Commented Jul 13, 2016 at 9:34
  • I found the mistake. I was calling Fun() before System.loadLibrary() was being called. Thanks @samgak. But I am wondering is there a way to avoid this? Right now the System.loadLibrary() is being called in onResume(). Can this be called in onCreate() instead? Commented Jul 13, 2016 at 15:10
  • put it in a static initializer for the class Commented Jul 13, 2016 at 16:37
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