hi ,
have one global variable in child view controller and assign the parent controller to this variable while instantiating .
ex:
in child view
sap.ui.core.Control.extend("a.sample.Control", {
appController:null,
init : function() {
// instantiate a sub-control
this._btn = new sap.m.Button();
//access appController here
},
in parent view instantiating child view set the parent controller
this._detailsView = sap.ui.jsview("todolist.details");
this._detailsView.appController = this.getController()
