title: Native Activity OpenCV4Android doesn't work
body: <p>I have downloaded the latest version of OpenCV4Android, the 2.4.5 version, and imported it into Eclipse Juno, after downloading all the right plugins. </p>
  
  <p>All the tutorials work well on my Android emulator, except Native Activity. When I try to run it on my emulator, the application stops with this message: "OCV Native Activity has stopped unfortunately".</p>
  
  <p>And my logcat is:</p>
  
  <pre><code>05-05 13:24:54.489: E/AndroidRuntime(884): FATAL EXCEPTION: main
  05-05 13:24:54.489: E/AndroidRuntime(884): java.lang.UnsatisfiedLinkError: Couldn't load native_activity from loader dalvik.system.PathClassLoader[dexPath=/data/app/org.opencv.samples.NativeActivity-2.apk,libraryPath=/data/app-lib/org.opencv.samples.NativeActivity-2]: findLibrary returned null
  05-05 13:24:54.489: E/AndroidRuntime(884):  at java.lang.Runtime.loadLibrary(Runtime.java:365)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at java.lang.System.loadLibrary(System.java:535)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at org.opencv.samples.NativeActivity.CvNativeActivity$1.onManagerConnected(CvNativeActivity.java:22)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at org.opencv.android.AsyncServiceHelper$1.onServiceConnected(AsyncServiceHelper.java:318)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1101)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1118)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at android.os.Handler.handleCallback(Handler.java:725)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at android.os.Handler.dispatchMessage(Handler.java:92)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at android.os.Looper.loop(Looper.java:137)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at android.app.ActivityThread.main(ActivityThread.java:5041)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at java.lang.reflect.Method.invokeNative(Native Method)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at java.lang.reflect.Method.invoke(Method.java:511)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  05-05 13:24:54.489: E/AndroidRuntime(884):  at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>What can I do to fix this problem?</p>