angularjs ionic detect which view user came from

Question

i am using ionic framework which uses the uiRouter.

In my code i am going from two different views to a single view and i want to do different actions base on where the user came from.

The common landing view is "result" currently my result state is set up as such

    .state('tab.result', {
  url: '/result',
  params: {
    value1: null,
    value2:null,
    value3:null
  },
  views: {
    'tab-home': {
      templateUrl: 'templates/home-result.html',
      controller: 'resultCtrl'
    }
  }
})

i have two paths from different view

1)

 $state.go("tab.result",{ 'value1':somevalue,'value1':somevalue,'value1':somevalue});

and in another view i am linking to it like so:

2)

 <ion-item ui-sref="tab.result">result</ion-item>

how do i setup my controller in my result view so i know where the user came from?

Answer 1

也许只记得$ rootState中的先前状态？

$rootScope.$on('$stateChangeSuccess', 
function(event, toState, toParams, fromState, fromParams){ 
    $rootScope.previousState = fromState;
    $rootScope.previousParams = fromParams;
})