Angular - ui-router 获取之前的状态 [英] Angular - ui-router get previous state

问题描述

有没有办法获取当前状态的前一个状态?

Is there a way to get the previous state of the current state?

例如，我想知道当前状态 B 之前的前一个状态是什么(前一个状态是状态 A).

For example I would like to know what the previous state was before current state B (where previous state would have been state A).

我无法在 ui-router github 文档页面中找到它.

I am not able to find it in ui-router github doc pages.

推荐答案

ui-router 一旦转换就不会跟踪之前的状态，但是 $stateChangeSuccess 事件会在 上广播$rootScope 当状态改变时.

ui-router doesn't track the previous state once it transitions, but the event $stateChangeSuccess is broadcast on the $rootScope when the state changes.

您应该能够从该事件中捕获先前的状态(from 是您要离开的状态):

You should be able to catch the prior state from that event (from is the state you're leaving):

$rootScope.$on('$stateChangeSuccess', function (ev, to, toParams, from, fromParams) {
   //assign the "from" parameter to something
});

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