Question

i’m try to write first native android application and get follow Error

There are solution package explorer photo and source code for each of changed file:


package ua.org.groupab;

import android.app.Activity;

import android.app.AlertDialog;

import android.os.Bundle;

public class ProjActivity extends Activity {

static {

    System.loadLibrary("ndkfoo");

  }
private native String invokeNativeFunction();
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    String hello = invokeNativeFunction();
    new AlertDialog.Builder(this).setMessage(hello).show();
}

}

What’s wrong in me code?
Help please!

Answer 1

in ndkfoo.c in the function declaration, it will be valid if the package name in the function must match with your package name

change the declaration in ndkfoo.c into

jstring Java_ua_org_groupab_ProjActivity_invokeNativeFunction()
 {
 }