Hi i have a question, can i send files to an application (lets say i write it) on the iPad, and then all the files i send that application, can they be opened by other apps from within iPad? or they are and will forever be visible only to my app?
It doesn't seem like you'd be capable of pulling off step one, by the sounds of it. I wouldn't worry about it.
You can control what file types your app opens and saves.
If you save a file in a format another will open, it may be possible. You could email the file from your app to your device, the open the file via mail in any app that supports it... A more direct path is probably possible, as well, but email is what I've used for inter-app file exchanges in my own apps.
If your app is capable of opening specific types of files, you should register that support with the system. This allows other apps, through the iOS document interaction technology, to offer the user the option to hand off those files to your app.
So this will put you in the list when certain apps try to open files. You should appear automatically in the email app. Other developer apps would have to check for this list and give the user the option. It is a good place to start and see if it meets your needs.
If the other application has registered to open those files.So you are saying that files i upload from PC to my own iPad application, can be viewed/worked on in other Apps if i launch them from my own App?