Ionic如何实现下拉刷新与上拉加载功能

<ion-view view-title="消息通知">
<ion-content class="padding">
　<!-- <ion-refresher> 下拉刷新指令 -->
<ion-refresher pulling-text="Pull to refresh" on-refresh="vm.doRefresh()"></ion-refresher>
<div class="list card" ng-repeat="message in vm.messages" >
<div class="item item-divider item-icon-right">{{message.title}}
<i class="icon" ng-click="vm.show(message)" ng-class="message.static?‘ion-arrow-down-b‘:‘ion-arrow-right-b‘"></i></div>
<div class="item item-body">
<div>
{{message.static?message.content:message.content.substr(, )}}
</div>
</div>
</div>
<!-- ion-infinite-scroll 上拉加载数据指令 distance默认% nf-if的值为false时，就禁止执行on-infinite -->
<ion-infinite-scroll ng-if="!vm.moredata" on-infinite="vm.loadMore()" distance="%" ></ion-infinite-scroll>
</ion-content>
</ion-view>

angular.module(‘starter.controllers‘, [])
.controller(‘InfoCtrl‘, function($rootScope, $timeout, $interval, $scope, $http, services) {
var vm = $scope.vm = {
moredata: false,
messages: [],
pagination: {
perPage: ,
currentPage: 
},
init: function () {
services.getMessages({perPage: vm.pagination.perPage, page: vm.pagination.currentPage}, function (data) {
vm.messages = data;
})
},
show: function (message) {
if (message.static) {
message.static = false;
} else {
message.static = true;
}
},
doRefresh: function () {
$timeout(function () {
$scope.$broadcast(‘scroll.refreshComplete‘);
}, );
},
loadMore: function () {
vm.pagination.currentPage += ;
services.getMessages({perPage: vm.pagination.perPage, page: vm.pagination.currentPage}, function (data) {
vm.messages = vm.messages.concat(data);
if (data.length == ) {
vm.moredata = true;
};
$scope.$broadcast(‘scroll.infiniteScrollComplete‘);
})
} 
}
vm.init();
})