通过角度翻译获得当前语言

$translate.use() is a getter and setter.

See this demo found in links of docs:

http://jsfiddle.net/PascalPrecht/eUGWJ/7/

The $translate service has a method called preferredLanguage() that return what you want. The return of this function is the string of the language, like 'en'.

Here i wrote you an example:

angular.module('traslateApp').controller('myController', ['$scope', '$translate', function($scope,$translate){
$scope.changeLanguage = function (langKey) {
$translate.use(langKey);
};
$scope.getCurrentLanguage = function () {
$translate.preferredLanguage();
};
}])

$translate.use() seems not to work on initial load of the app, to get last selected language from storage: $translate.storage().get( $translate.storageKey() ) or just $translate.proposedLanguage();

$translate.use() is the way to go. Also, when an asynchronous loader is executed, you might wanna use $translate.proposedLanguage() which returns the language key of the language that is currently loaded but not finished loaded yet.

When using angular-translate-loader-static-files I have noticed that $translate.proposedLanguage() returned undefined when using the default language while $translate.use() always returned the proposed language.

Therefore I fixed it by using:

var currentLang = $translate.proposedLanguage() || $translate.use();

I think this is the better way to determine the language -

$window.navigator.language || $window.navigator.userLanguage

Maybe is not related but could be useful. In angular2+ the way to access to the current language is

...
import { TranslateService } from '@ngx-translate/core';


export class MyComponent implements OnInit {
constructor(private translate: TranslateService) {}


ngOnInit() {
translate.use('it');
const currentLang = this.translate.currentLang;
}
}

translate.currentLang is used to check the current selected language in i18n

import { TranslateService } from '@ngx-translate/core';


export class MyComponent implements OnInit {
constructor(private translate: TranslateService)
{
translate.setDefaultLang('en');
}