update share.md

doc/SHARE.md

@@ -11,9 +11,10 @@ More support will be considered in the future.
  >  We consider support `file://` in the future,so paths begin with  `file://` are ok, but fluwx does nothing<br>
  >  If no schema or wrong schema proivided,fluwx will load it as network image.Be careful<br>
  >  Due to the limits of WeChat，the thumbnail must be smaller than 32k(mini-program's is smaller than 120k),you'd better provide <br>
- >  a qualified thumbnail.Otherwise, `Fluwx` will compress it for you. The result of compression is unpredictable.
-
-### The Destination 
+ >  a qualified thumbnail.Otherwise, `Fluwx` will compress it for you. The result of compression is unpredictable.<br>
+ >  Considering that we may obtain a path such as *content://media/external/file* on Android, `fluwx` also support reading image or thumbnail from `content://`.<br>
+ >  `content://` only works on Android.
+### The Destination
     The destination of sharing can be SESSION(default),TIMELINE or FAVORITE.However,mini-program only support SESSION.
 ```dart
     ///[WeChatScene.SESSION]会话

doc/SHARE_CN.md

@@ -10,6 +10,8 @@
  >  如果不指定schema或者schema错误,将会被处理为网络图片，请谨慎。<br>
  >  由于微信的限制，一般的缩略图要小于32k(小程序的缩略图要小于120k)，所以在使用缩略的时候<br>
  >  很有必要使用一张合格的缩略图，否则`Fluwx`进行压缩，其结果可能并不是你所预期的。
+  >  考虑到在`Android`上，我们可能得到像*content://media/external/file*这样的路径, `fluwx` 也支持从`content://`中读取图片或者缩略图.<br>
+  >  `content://` 只在Android上有效。
 
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