获取Exif图片信息

//从文件获取exif信息
ExifInterface ei = new ExifInterface(imageFilePath);
String imageDescription = ei.getAttribute("ImageDescription");
if (imageDescription != null){
    Log.v("EXIF", imageDescription);
}
//把exif信息写到文件:
ExifInterface ei = new ExifInterface(imageFilePath);
ei.setAttribute("ImageDescription","Something New");