java - Android OpenCV imwrite No Implementation Found -

i trying use imgcodecs.imwrite in opencv android application keeps giving error:

no implementation found boolean org.opencv.imgcodecs.imgcodecs.imwrite_1(java.lang.string, long) (tried java_org_opencv_imgcodecs_imgcodecs_imwrite_11 , java_org_opencv_imgcodecs_imgcodecs_imwrite_11__ljava_lang_string_2j) 

my code is:

 private void takephoto(final mat rgba) {           imgproc.cvtcolor(rgba, mbgr, imgproc.color_rgba2bgr, 3);          string basedir = environment.getexternalstoragedirectory().getabsolutepath();         string filename = "myfile.jpg";          imagefile = new file(basedir + file.separator + filename);         imgcodecs.imwrite(imagefile.tostring(), mbgr);           final intent intent = new intent(this, labactivity.class);          intent.putextra(labactivity.extra_photo_data_path,                 imagefile.tostring());          startactivity(intent);     } 

many thanks

i have solved it. version should declared follows:

opencvloader.initasync(opencvloader.opencv_version_3_0_0,