To refresh a view, run $A.get("e.force:refreshView").fire();, which reloads all data for the view.
This example refreshes the view after an action is successfully completed.
refresh : function(component, event, helper) { var action = cmp.get('c.myController'); action.setCallback(cmp, function(response) { var state = response.getState(); if (state === 'SUCCESS'){ $A.get('e.force:refreshView').fire(); } else { //do something } } ); $A.enqueueAction(action); }