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Implements CvViewFrameListener2 not found

asked 2013-05-30 04:53:45 -0500

Vaska gravatar image

Hello, I need help i want add implements to my activity -> CvViewFrameListener2 - not found what is problem?

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answered 2013-06-26 06:09:41 -0500

berak gravatar image

you also have to add the opencv library to your project.

Properties / Android / library

add the OpenCV library 2.4.5 there


CvViewFrameListener2 is defined inside org.opencv.android.CameraBridgeViewBase

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answered 2013-06-26 07:24:50 -0500

advdk gravatar image

Thank you for your answer, berak. Solved it. Seems like the interface name is misspelled in the tutorial. Instead of CvViewFrameListener2 (which really doesn't exist) I used CvCameraViewListener2 and everything works like a charm.

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ah, right . but please use comments, not answers !

berak gravatar imageberak ( 2013-06-26 07:28:15 -0500 )edit
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answered 2013-06-26 05:55:17 -0500

advdk gravatar image

The same problem here. I tried to folllow this tutorial, but I got stuck at

11 Defines that your activity implements CvViewFrameListener2 interface (...)

It seems like the interface CvViewFrameListener2 doesn't exist in OpenCV library. Has anybody any idea?

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answered 2013-05-30 09:00:46 -0500

Awkman gravatar image

Do you have the "OpenCV Library - 2.x.x" Project "imported" and "open" in eclipse ?

If you don't I think you get errors like that on every reference to an opencv class.

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I have the same error......... and yes, i have OpenCV library 2.4.5 imported and opened.... but if I write "[...] implements CvViewFrameListener2" in my class I cannot compile because it cause an error

hghg gravatar imagehghg ( 2013-06-24 13:29:48 -0500 )edit
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Asked: 2013-05-30 04:53:45 -0500

Seen: 4,721 times

Last updated: Jun 26 '13