title: Save file to public directory in iOS using cordova
body: <p>I have a cordova application that downloads pdf file from internet and save it to local filesystem using cordova-plugin-file and cordova-plugin-file-transfer. In next step I would like to open the file using default application for specified mimetype. I am using cordova-plugin-file-opener2 plugin for that. Directory where the file is saved needs to be readable for chosen 3rd party application to open the file. On android there are several publicly accessible filesystem directories and I have it working correctly. But I am unable to find the right directory where I need to save the file in case of iOS, to make it available for chosen default 3rd party app. </p>
  
  <p>cordova-plugin-file says in its docs that all directories available in RW mode to cordova application are private: <a href="https://github.com/apache/cordova-plugin-file#file-system-layouts" rel="nofollow">https://github.com/apache/cordova-plugin-file#file-system-layouts</a></p>
  
  <p>But how does it come? Concept of opening file by default 3rd party application based on mimetype is standard in every OS. Any help would be appreciated. </p>