android - Facedetector not recognize faces -


i have following code facedetector dont recognize faces, ideas?

android.media.facedetector.face[] faces = new facedetector.face[4]; bitmap bitmap; bitmapfactory.options options = new bitmapfactory.options(); bitmap = bitmapfactory.decodefile(photo.getabsolutepath()); if(bitmap!=null){ facedetector f = new facedetector(bitmap.getwidth(), bitmap.getheight(), 4); f.findfaces(bitmap, faces); }

thank in advance.


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