A content provider manages access to a central repository of data. You implement a| Android Developers
Android 4.4 (API level 19) introduces the Storage Access Framework (SAF). The SAF makes it simple for users to browse and open documents, images, and other files across all of their their preferred document storage providers.| Android Developers
To give users more control over their files and limit file clutter,| Android Developers
The QFile class provides an interface for reading from and writing to files.| doc.qt.io
The QDir class provides access to directory structures and their contents.| doc.qt.io