UnsatisfiedLinkError for new Mat() on V0.9

[chile12]

Hello,

I don't get javacv to work on my android, despite following all instructions on how to install javacv..
(https://github.com/bytedeco/javacv#manual-installation-for-opencv-and-ffmpeg)

The first time I'm accessing the c++ API, this will happen:
java.lang.UnsatisfiedLinkError: Native method not found: org.bytedeco.javacpp.opencv_core$Mat.allocate:()

Are there any suggestions?

Thank you.

[saudet]

The ADT plugin for Eclipse is pretty buggy. Project files can easily get corrupted. Please try to recreate the project files from scratch.

[chile12]

The forth post of this issue discussion solved my problem:
https://code.google.com/p/javacv/issues/detail?id=459

Maybe this will help someone in the future, or solve this issue all together..

[saudet]

That's strange, I thought I had fixed that issue, since I didn't get any feedback from anyone:
bytedeco/javacpp#1 and #9
But it's still happening it seems. Guess we'll have to look back at that once more.

Thanks for the workaround, and please let me know if you figure out how to fix this, thanks!

[jpsacha]

I got the same error if new Mat() is done early in a program, for instance:

import org.bytedeco.javacpp.opencv_core.*;

public class NewMatDemo {
    public static void main(String[] args) {
       Mat image = new Mat();
    }
}

Running above results in exception:

Exception in thread "main" java.lang.UnsatisfiedLinkError: org.bytedeco.javacpp.opencv_core$Mat.allocate()V
    at org.bytedeco.javacpp.opencv_core$Mat.allocate(Native Method)
    at org.bytedeco.javacpp.opencv_core$Mat.<init>(opencv_core.java:6211)
    at org.bytedeco.javacpp.helper.opencv_core$AbstractMat.<clinit>(opencv_core.java:2376)
    at NewMatDemo.main(NewMatDemo.java:5)

However, if I do some other OpenCV function first, it will not happen, for instance:

import org.bytedeco.javacpp.opencv_core.Mat;
import static org.bytedeco.javacpp.opencv_highgui.imread;

public class NewMatDemo {
    public static void main(String[] args) {
        imread("data/church01.jpg");
        Mat image = new Mat();
    }
}

runs just fine.

I am running current build of javacv 2.4.9_0.9.1-SNAPSHOT.

[saudet]

Now it should be fixed in version 0.10. Let me know if you still encounter that issue for some reason, thanks!