列表下拉刷新，上拉加载更多

<ion-view can-swipe-back="false" cache-view="false">
    <div class="bar bar-header bar-positive">
        <button ng-click="vm.goBack()" class="button button-clear icon icon ion-ios-arrow-left"></button>
        <h1 class="title">{{searchType == '1'?'Search Product':'Physical Count'}}</h1>
        <button ng-click="scrollTop()" class="button button-positive icon ion-ios-arrow-up"></button>
    </div>
    <ion-content class="has-header">
        <ion-refresher
                pulling-text="Pull to refresh..."
                on-refresh="vm.searchProduct('1')">
        </ion-refresher>
        <div style="width: 100%; margin: 0 auto">
            <div ng-if="vm.errormsg1 != ''" style="padding: 0px;">
                <a class="button button-block icon-right ion-ios-close-outline button-assertive" style="font-size: 9px; border-radius: 0px; margin-top: 0px; margin-bottom: 0px;" ng-click="Clean1()">{{vm.errormsg1}}</a>
            </div>
            <div class="list">
                <div class="item item-input-inset" style="background-color:#F5F5F5">
                    <label class="item-input-wrapper" style="background-color:#ffffff">
                        <i class="icon ion-ios-search placeholder-icon"></i>
                        <input type="text" ng-model="vm.search" placeholder="Barcode/UPC/Description" style="width: 100%;">
                    </label>
                    <button class="button button-small button-positive" ng-click="vm.searchProduct('0')">
                        Search
                    </button>
                </div>
                <div class="item item-input-inset" style="background-color:#F5F5F5">
                    <label class="item item-input" style="width: 100%; background-color:#F5F5F5;">
                        <input type="text" ng-model="warehouseName" ng-click="vm.selectWarehouse()" readonly style="background-color:#F5F5F5; color:#8A8A8A;">
                        <i class="icon ion-ios-arrow-down icon-right placeholder-icon" style="margin-right: 10px"></i>
                    </label>
                </div>
                <a ng-repeat="item in vm.list" ng-click="vm.selectItem(item)" class="item item-icon-right">
                    <h2 ng-if="item.plu != ''">{{item.upc}} / {{item.plu}}</h2>
                    <h2 ng-if="item.plu == ''">{{item.upc}}</h2>
                    <p>{{item.description}}</p>
                    <p>Price $ {{item.price1}}</p>
                    <p ng-if="item.onhand != '' && item.kitchen == false">Quantity: {{item.onhand}}</p>
                    <p ng-if="item.onhand == '' && item.kitchen == false">Quantity: 0.00</p>
                    <i class="icon ion-ios-arrow-right" style="font-size: 15px;"></i>
                </a>
                <div ng-if="vm.nextpage==0 && vm.list.length>0" class="item" align="center"  style="color:#FF0000">
                    --last page--
                </div>
            </div>
            <ion-infinite-scroll
                    on-infinite="vm.next({{vm.nextpage}})"
                    distance="5%">
            </ion-infinite-scroll>
        </div>
    </ion-content>
</ion-view>

vm.searchProduct = function(refreshyn) {
        $rootScope.photo = "";

        if (vm.search == "") {
            vm.errormsg1 = "Please enter Barcode/UPC/Description.";
            return;
        }

        $rootScope.search = vm.search;

        vm.errormsg1 = "";
        vm.warningmsg1 = "";

        if (refreshyn=='1') {
            $scope.$broadcast('scroll.refreshComplete');
        }
        if (refreshyn!='-1') {
            $ionicLoading.show({template: 'Searching...'});
        }

        //if ($rootScope.isAndroid==true || $rootScope.isIOS==true)
        //    cordova.plugins.Keyboard.close();

        $ionicLoading.show({template: 'Searching Product...'});

        var params = {
            token : $rootScope.loginInfo.token,
            tokensecret : $rootScope.loginInfo.tokensecret,
            ciaid: $rootScope.ciaid,
            username: $rootScope.loginInfo.username,
            upc: vm.search,
            idwarehouse: $rootScope.idwarehouse,
            type: $rootScope.searchType,
            nextpage: '0'
        };

        vm.doSearch(params, false);
    }

    vm.next=function(xnextpage){
        if ( xnextpage == 0 ) {
            $scope.$broadcast('scroll.infiniteScrollComplete');
        }
        else  {

            var params = {
                token : $rootScope.loginInfo.token,
                tokensecret : $rootScope.loginInfo.tokensecret,
                ciaid: $rootScope.ciaid,
                username: $rootScope.loginInfo.username,
                upc: vm.search,
                idwarehouse: $rootScope.idwarehouse,
                type: $rootScope.searchType,
                nextpage : xnextpage
            };

            vm.doSearch(params, true);
        }
    }

    vm.doSearch = function(params, next) {
        $rootScope.productSearchResult = null;

        $http.post($rootScope.ws_url + "/SearchProduct.json", params, {timeout:5000}).then(
            function(Json) {
                $ionicLoading.hide();
                $scope.$broadcast('scroll.infiniteScrollComplete');
                if (Json.status == 200) {
                    if (Json.data.validtoken == "0")
                    {
                        vm.logout($rootScope.error2);
                        return;
                    }
                    if (Json.data.list != null && Json.data.list.length > 0) {
                        $rootScope.productSearchResult = Json.data;
                        if (params.nextpage > 0) {
                            for (var i = 0; i < Json.data.list.length; i++) {
                                vm.list.push(Json.data.list[i]);
                            }
                        } else {
                            vm.list = $rootScope.productSearchResult.list;
                        }
                        vm.nextpage = $rootScope.productSearchResult.nextpage;
                        if (next == false) {
                            if (vm.list.length == 1)
                                vm.getProduct(vm.list[0].upc, $rootScope.searchType);
                        }
                    } else {
                        if (next == false) {
                            vm.list = {};
                            vm.nextpage = 0;
                            vm.errormsg1 = "Data not found.";
                            $ionicScrollDelegate.scrollTop();
                        } else {
                            vm.nextpage = 0;
                        }
                    }
                }
            },
            function(err) {
                $ionicLoading.hide();
                $scope.$broadcast('scroll.infiniteScrollComplete');
                vm.errormsg1 = $rootScope.error1;
                $ionicScrollDelegate.scrollTop();
            }
        );
    }