Question

我正在处理从模板A到模板B再回到模板A的应用程序。在模板A上，用户单击按钮以转到模板B.在模板B上，用户添加金额然后点击提交。然后程序返回模板A并显示模板B中输入的内容，但提交的数字未在范围内更新并显示为空。出于某种原因，当我从模板B启动应用程序到模板A时，范围会更新。

我正在使用工厂

 .factory('myService', function(){
  var budget = {
    limit: null
  };
  function set(data){
    budget.limit = data;
  }
  function get(){
    return budget.limit;
  }
  return{
    set: set,
    get: get,
    print: console.log(budget.limit)
  }
})

这是模板A的代码，名为BudgetCalc

<ion-view view-title="BudgetCalc">
  <ion-content class="padding">
    <a href="#/tab/dash/addBudget"><button>Start Budgeting</button></a>
    <h2>Your Limit is {{limit}}</h2>
  </ion-content>
</ion-view>

模板B名为addBuget

<ion-view view-title="Add a Budget">
    <ion-content>
        <label class="item item-input">
          <span class="input-label">Set Spending Limit</span>
          <input type="number"ng-model="limit"> 
        </label>
        <button ui-sref="tab.budget" ng-click="setLimit(limit)">Submit</button>
        <br><h2>Your Limit is: {{limit}}</h2>
    </ion-content>
</ion-view>

以下是我的两个模板的控制器

.controller('BudgetCtrl', function($scope, myService) {
  $scope.limit = myService.get();
  console.log("This is your limit " + $scope.limit);
})

.controller('SetLimitCtrl', function($scope, myService){
  $scope.setLimit = function(limit){
    if (limit != null) {
      myService.set(limit);
      console.log(myService.print);
    }  
  }
})

Answer 1

您可以使用localstorage

在控制器之间共享数据

.controller('SetLimitCtrl', function($scope, $localstorage){
  $scope.setLimit = function(limit){
    if (limit != null) {
      $localstorage.set("limit",limit);
      console.log($localstorage.get("limit"));
    }  
  }
})

.controller('BudgetCtrl', function($scope, $localstorage) {
  $scope.limit = $localstorage.get("limit");
  console.log("This is your limit " + $scope.limit);
  //// Dont forgot to clear limit when you complete the further process
})

Factory Localsoarage：

.factory('$localstorage', ['$window', function ($window) {
                return {
                    set: function (key, value) {
                        $window.localStorage[key] = value;
                    },
                    get: function (key, defaultValue) {
                        return $window.localStorage[key] || defaultValue;
                    },
                    setObject: function (key, value) {
                        $window.localStorage[key] = JSON.stringify(value);
                    },
                    getObject: function (key, nulled) {
                        nulled = '[]';
                        try {
                            return JSON.parse($window.localStorage[key] || '[]');
                        } catch (e) {
                        }
                    },
                    delete: function (key) {
                        $window.localStorage.removeItem(key);
                    },
                };
            }])

当我在页面之间移动时，$ scope不会更新

1 个答案: