How can I add a Google Docs URL to my iOS home screen? I know how to add an http://blahblah url to my iOS Home Screen using Safari.
I can fashion a URL like GoogleDocs://http://blahblah which will take me directly to the Docs app (not Safari).
My question is, how can I create a Home Screen icon for a GoogleDocs://http://blahblah url?
Try using the Shortcuts app.
If you create a shortcut to Web → Open URLs you can use your app URL you crafted above to open the correct application.
From there click the ellipsis in the top right-hand corner, give it a name and then select Add to Home Screen.