Here's how I do it. On my Android phone, I use SwiftScan to scan documents because it can also auto-upload to various cloud services like Google Drive, Dropbox, etc. I use Dropbox. On my computer, I installed Dropbox so that files in the cloud are synced to a local folder on my computer. Then I configured Evernote (on my computer) to watch this folder and automatically import new files when they appear there.
This sounds a bit complicated, I know. But in operation, it's dead simple. Here's how it works. I open SwiftScan, point my camera at a document, and wait for it to focus and take the photo. That's it. A few seconds later the pdf appears in Evernote like magic. Zero clicks, as promised.