JavaCV sample(FacePreview) on android not working

Question

I did everything as told in http://code.google.com/p/javacv/ (JavaCV Homepage). No errors in my code. But when I try to launch the application on the android emulator it says " Unfortunately, appname has stopped. I have no idea where to look at now. Any suggestion anyone?

These are found in the logcat text file.

10-07 03:41:15.878: E/dalvikvm(1138): dlopen("/data/app-lib/com.googlecode.javacv.facepreview-2/libjniopencv_core.so") failed: dlopen failed: cannot locate symbol "_ZSt10unexpectedv" referenced by "libjniopencv_core.so"...
10-07 03:41:15.928: E/AndroidRuntime(1138): FATAL EXCEPTION: main
10-07 03:41:15.928: E/AndroidRuntime(1138): java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: com.googlecode.javacv.cpp.opencv_objdetect
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:455)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacv.facepreview.FaceView.<init>(FacePreview.java:85)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacv.facepreview.FacePreview.onCreate(FacePreview.java:51)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.app.Activity.performCreate(Activity.java:5133)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.os.Handler.dispatchMessage(Handler.java:99)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.os.Looper.loop(Looper.java:137)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at android.app.ActivityThread.main(ActivityThread.java:5103)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.reflect.Method.invokeNative(Native Method)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.reflect.Method.invoke(Method.java:525)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at dalvik.system.NativeStart.main(Native Method)
10-07 03:41:15.928: E/AndroidRuntime(1138): Caused by: java.lang.ClassNotFoundException: com.googlecode.javacv.cpp.opencv_objdetect
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.Class.classForName(Native Method)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.Class.forName(Class.java:204)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:453)
10-07 03:41:15.928: E/AndroidRuntime(1138):     ... 16 more
10-07 03:41:15.928: E/AndroidRuntime(1138): Caused by: java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: com.googlecode.javacv.cpp.opencv_imgproc
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:455)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacv.cpp.opencv_objdetect.<clinit>(opencv_objdetect.java:97)
10-07 03:41:15.928: E/AndroidRuntime(1138):     ... 19 more
10-07 03:41:15.928: E/AndroidRuntime(1138): Caused by: java.lang.ClassNotFoundException: com.googlecode.javacv.cpp.opencv_imgproc
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.Class.classForName(Native Method)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.Class.forName(Class.java:204)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:453)
10-07 03:41:15.928: E/AndroidRuntime(1138):     ... 20 more
10-07 03:41:15.928: E/AndroidRuntime(1138): Caused by: java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: com.googlecode.javacv.cpp.opencv_core
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:455)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacv.cpp.opencv_imgproc.<clinit>(opencv_imgproc.java:97)
10-07 03:41:15.928: E/AndroidRuntime(1138):     ... 23 more
10-07 03:41:15.928: E/AndroidRuntime(1138): Caused by: java.lang.ClassNotFoundException: com.googlecode.javacv.cpp.opencv_core
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.Class.classForName(Native Method)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.Class.forName(Class.java:204)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:453)
10-07 03:41:15.928: E/AndroidRuntime(1138):     ... 24 more
10-07 03:41:15.928: E/AndroidRuntime(1138): Caused by: java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "_ZSt10unexpectedv" referenced by "libjniopencv_core.so"...
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.Runtime.loadLibrary(Runtime.java:361)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at java.lang.System.loadLibrary(System.java:525)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.loadLibrary(Loader.java:593)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:489)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacpp.Loader.load(Loader.java:431)
10-07 03:41:15.928: E/AndroidRuntime(1138):     at com.googlecode.javacv.cpp.opencv_core.<clinit>(opencv_core.java:136)
10-07 03:41:15.928: E/AndroidRuntime(1138):     ... 27 more

All answers are greatly appreciated. Thanks.

I have added them into the question. Please take a look. Thanks. — Melvin, Sep 29 '13 at 06:46
this is the console not logcat. provide your logcat after execution. — Ranjit, Sep 30 '13 at 07:19
if you dont know how to open logcat then inside eclipse open window (left of help tab) then show view and then click others. there you find the logcat and click on it to show. — Ranjit, Sep 30 '13 at 07:21

Mary · Answer 1 · 2015-05-20T09:34:44.103

0

Try to insert this inside the build.gradle dependencies

compile ‘org.bytedeco:javacv:+’
compile group: ‘org.bytedeco.javacpp-presets’, name: ‘opencv’, version:   ‘2.4.10–0.10', classifier: ‘android-arm’ 
compile group: ‘org.bytedeco.javacpp-presets’, name: ‘ffmpeg’, version:   ‘2.5.1–0.10', classifier: ‘android-arm’

edited May 20 '15 at 09:34

answered May 20 '15 at 09:29

Mary

49
4

An explanation would be nice. – gsamaras May 20 '15 at 09:45
without these compile dependencies I had NoClassDefFoundError in Loader.load(opencv_objdetect.class); Here is a good help about the error http://javarevisited.blogspot.com/2011/06/noclassdeffounderror-exception-in.html – Mary May 20 '15 at 20:05
Also there is a similar topic http://stackoverflow.com/questions/20890116/javacv-android-studio-gradle-possible/30345905#30345905 – Mary May 20 '15 at 20:06

JavaCV sample(FacePreview) on android not working

1 Answers1