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In my app the user can go to a cloud provider, such as Dropbox, click on an appropriate CSV or TXT file and open it in my App. My App converts the incoming data to a specific doc format (it contains the data in the CSV file plus data how various parameters the user input to process the data). The App removes the path extension and provides a new path extension. I would like to write this file back to the user's folder in the cloud provider (eg Dropbox). Is this possible just using file manager calls, or do I have to use the Dropbox API. The issue is that I don't want to have to write various versions for other cloud providers such as OneDrive and Box. My other option is the save the file with the modified format for my App in the App Document directory. However, when the user goes back to the Document Browser, it is still shows the Dropbox area. Is there a way to tell the Document Browser which location you want it to return to (eg the sandboxed Document directory.

Is there an easy way to know when an external keyboard is attached, such as a notification. Landscape Mode in my app only makes sense when an external keyboard is attained, due to screen space i need. Shifting up the content doesn’t work. Thanks DataAnalysis iPad app