写任意元数据EXIF Android中 [英] Writing arbitrary metadata to EXIF in Android

问题描述

此问题发源于此：<一href=\"http://stackoverflow.com/questions/3245811/writing-exif-metadata-to-images-in-android/3246501?noredirect=1#comment22637008_3246501\">Writing EXIF元数据在Android中图像。

This question originated here: Writing EXIF metadata to images in Android .

我们可以使用EXIF写任意元数据，即除了那些在 ExifInterface文档（经度，纬度，闪存等）。如果不是，有什么能写任意元数据，以图像文件的preferred方法？

Can we use EXIF to write arbitrary metadata, i.e. other than those specified in the ExifInterface documentation (like latitude, longitude, flash etc). If not, what could be a preferred method of writing arbitrary metadata to image files?

推荐答案

该ExifInterface只有非常有限的实施EXIF标准的，不会让你比读/记录的那些规定的其他/写标签。在所选择的答案<一个href=\"http://stackoverflow.com/questions/12944123/reading-android-jpeg-exif-metadata-from-picture-callback\">this交中描述的另一种方法。

The ExifInterface is only a very limited implementation of the EXIF standard and will not allow you to read/write tags other than the ones documented/defined. In the chosen answer of this post an alternative method is described.

任意数据可以被写入到下列标记之一

Arbitrary data could be written to one of the following tags

Tag-hex     Tag-dec IFD     Key                             Type    
0x010e      270     Image   Exif.Image.ImageDescription     Ascii
0x9286      37510   Photo   Exif.Photo.UserComment          Comment

由此UserComment在具有关于使用的字符集较少限制

whereby UserComment has less restrictions regarding the character set used

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