1. A method for assigning a content item to a content item collection under management of a content management system, comprising: at a computing device comprising a touch screen display, one or more processors and memory storing a first application executed by the one or more processors to perform the method, performing operations comprising: after the first application is opened, entering a first application state comprising a plurality of content item collection indicators displayed on the touch screen display; after entering the first application state, detecting a first touch gesture directed to one content item collection indicator of the plurality of content item collection indicators; wherein each content item collection indicator, of the plurality of content item collection indicators, represents one content item collection, of a plurality of content item collections, under management of the content management system; wherein performance of an earlier touch gesture directed to a graphical representation of a content item, displayed on the touch screen display by a second application of the computing device that is not the first application, causes the first application to open and enter the first application state; after detecting the first touch gesture, assigning a copy of the content item to the content item collection, of the plurality of content item collections, represented by the one content item collection indicator to which the first touch gesture is directed.