.controller('CafeCtrl', function($scope, cafeData, $state) { //往外传值的controller里加一个$state
 $scope.cafeList = cafeData.All();
 $scope.goDetail = function(id) {
  $state.go('itemDetail',{sort : "cafe", id : id}); //就拿它传
 };
})

$state.go('itemDetail',{sort : "cafe", id : id});
//前面的是变量名，后边的是值

.state('itemDetail', {
 url: '/itemDetail/:sort/:id/', //这里就是那两个要传的东西，名字要对应相同
 templateUrl: 'templates/itemDetail.html',
 controller: 'ItemDetailCtrl'
})

.controller('ItemDetailCtrl', function($scope, $stateParams, $state) { //加个$stateParams
 $scope.sort = $stateParams.sort;
 $scope.itemId = $stateParams.id;
})