Android Sync and Share

I am looking for a android sync and share WebDAV app for cloud storage, which gives its users access to their files on their online storage space. It also includes functionality like automatically uploading pictures and videos to storage. Main Features ･Signup button and login fields are required. ･Allow only one user at a time. ･Compression-and upload File / Folder ･App will work on WebDAV protocol and https-TLS encryption. ･App settings can be protected with passcode. ･Full two-way auto-sync running in background, just like other cloud storage. ･Configurable interval: 15 minutes, 30 minutes, every hour. ･Monitors battery level, WiFi/3G/4G/LTE/WiMax connectivity and adapts its behavior according to user preferences. ･Sync multiple pairs of folders and files. ･Upload files any size of file. ･View File ･Moving and Copying File / Folder ･Deleting File / Folder ･Name Change File / Folder ･Download File / Folder ･Multi-select Files / Folders ･Slideshow for photos ･PDF, Word 2007/2013 capable, Developer can take Dropbox as an example