File Management File Management Overview Application File Application File Overview Application Sandbox Directory Application File Access and Management Accessing Application Files Uploading and Downloading Application Files Obtaining Application and File System Space Statistics Sending Files to an Application Sandbox Sharing an Application File User File User File Overview Selecting and Saving User Files (FilePicker) Selecting User Files Saving User Files Developing a FileManager Application (Available Only for System Applications) Managing External Storage Devices (Available Only for System Applications) Distributed File System Distributed File System Overview Setting the Security Level of a Distributed File Accessing Files Across Devices