[转]ionic Accordion list three levels

简化后的主要代码：

        $scope.groups = [];

        for (var i = 0; i < 2; i++) {

            $scope.groups[i] = {

                name: i,

                items: []

            };

            for (var j = 0; j < 3; j++) {

                var item = { name: i + '-' + j, items: [] };

                for (var k = 0; k < 3; k++) {

                    item.items.push({ name: 'kkk' + k });

                }

                $scope.groups[i].items.push(item);

            }

        }

        $scope.toggleGroup = function (group) {

            if ($scope.isGroupShown(group)) {

                $scope.shownGroup = null;

                $scope.shown2 = null;

            } else {

                $scope.shownGroup = group;

            }

        };

        $scope.isGroupShown = function (group) {

            return $scope.shownGroup === group;

        };

        $scope.isGroupShown2 = function (group) {

            return $scope.shown2 === group;

        };

        $scope.max = function (group) {

            if ($scope.isGroupShown2(group)) {

                $scope.shown2 = null;

            } else {

                $scope.shown2 = group;

            }

        };

            <ion-list>

                <div ng-repeat="group in groups">

                    <ion-item class="item-stable item-icon-right"

                              ng-click="toggleGroup(group)"

                              ng-class="{active: isGroupShown(group)}">

                        <i class="icon" ng-class="isGroupShown(group) ? 'ion-minus' : 'ion-plus'"></i>

                        &nbsp;

                        Group {{group.name}}

                    </ion-item>

                    <div ng-repeat="item in group.items">

                        <ion-item class="item-accordion item-icon-right"

                                  ng-if="isGroupShown(group)" ng-click="max(item)" style="padding-left: 50px;">

                            <i class="icon" ng-class="isGroupShown2(item) ? 'ion-minus' : 'ion-plus'"></i>

                            {{item.name}}

                        </ion-item>

                        <ion-item class="item-accordion" ng-if="isGroupShown2(item)" style="padding-left: 80px;">

                            <div ng-repeat="subitem in item.items">

                                {{subitem.name}}

                            </div>

                        </ion-item>

                    </div>

                </div>

            </ion-list>

本文转自：http://codepen.io/morsiki/pen/KdMRgN?editors=101

<html ng-app="ionicApp">

  <head>

    <meta charset="utf-8">

    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">

    <title>Ionic Accordion</title>

    <link href="//code.ionicframework.com/nightly/css/ionic.css" rel="stylesheet">

    <script src="//code.ionicframework.com/nightly/js/ionic.bundle.js"></script>

  </head>

  <body ng-controller="MyCtrl">

    <ion-header-bar class="bar-positive">

      <h1 class="title">Accordion List</h1>

    </ion-header-bar>

    <ion-content>

      <ion-list>

        <div ng-repeat="group in groups">

          <ion-item class="item-stable"

                    ng-click="toggleGroup(group)"

                    ng-class="{active: isGroupShown(group)}">

              <i class="icon" ng-class="isGroupShown(group) ? 'ion-minus' : 'ion-plus'"></i>

            &nbsp;

            Group {{group.name}}

          </ion-item>

          <div ng-repeat="item in group.items">

          <ion-item class="item-accordion"

                    ng-if="isGroupShown(group)" ng-click="max(item)" style="padding-left: 50px;">

            <i class="icon" ng-class="isGroupShown2(item) ? 'ion-minus' : 'ion-plus'"></i>

            {{item.subId}}

          </ion-item>

          <ion-item class="item-accordion" ng-if="isGroupShown2(item)" style="padding-left: 80px;">

            Example1<br>

            Example2

          </ion-item>

          </div>

        </div>

      </ion-list>

    </ion-content>

  </body>

</html>

angular.module('ionicApp', ['ionic'])

.controller('MyCtrl', function($scope) {

  $scope.groups = [];

  for (var i=0; i<10; i++) {

    $scope.groups[i] = {

      name: i,

      items: []

    };

    for (var j=0; j<3; j++) {

      $scope.groups[i].items.push(i + '-' + j);

    }

  }

  /*

   * if given group is the selected group, deselect it

   * else, select the given group

   */

  $scope.toggleGroup = function(group) {

    if ($scope.isGroupShown(group)) {

      $scope.shownGroup = null;

    } else {

      $scope.shownGroup = group;

    }

  };

  $scope.isGroupShown = function(group) {

    return $scope.shownGroup === group;

  };

});

body {

  cursor: url('http://ionicframework.com/img/finger.png'), auto;

}

/*

 * http://docs.angularjs.org/api/ng/directive/ngShow#usage_animations

 */

.list .item.item-accordion {

  line-height: 38px;

  padding-top:;

  padding-bottom:;

  transition: 0.09s all linear;

}

.list .item.item-accordion.ng-hide {

  line-height: 0px;

}

.list .item.item-accordion.ng-hide-add,

.list .item.item-accordion.ng-hide-remove {

  display: block !important;

}