I am trying to build an app that will allow users to see all pdf files that are on the device (in some kind of a list with a preview) [Regardless of which app it belongs to on the device, all should be shown]. Is there anyway to achieve this?
Sorry but this is not possible on an iOS device because of a feature called sandboxing. Apple does not allow an app to access the sandbox of another app. Each app sits inside a sandbox of its own. This is iOS's security feature. There is no way to go around this feature.
Reference - About App Sandbox
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