Exif记录图片的信息

    ExifInterface exifInterface = new ExifInterface(Environment.getExternalStorageDirectory().getPath()+"/demo2.jpg");
            System.out.println(Environment.getExternalStorageDirectory().getPath()+"/demo2.jpg");
            System.out.println(exifInterface.getAttributeDouble(ExifInterface.TAG_IMAGE_WIDTH   , 0)+"");
            System.out.println(exifInterface.getAttributeDouble(ExifInterface.TAG_IMAGE_LENGTH  , 0)+"");