coupon_page.dart
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import 'package:flutter/material.dart';
import 'package:flutter_easyrefresh/easy_refresh.dart';
import 'package:flutter_screenutil/screenutil.dart';
import 'package:one_key/constant/state.dart';
import 'package:one_key/pages/coupon/coupon_item.dart';
import 'package:one_key/provider/coupon_provider.dart';
import 'package:one_key/utils/event_bus.dart';
import 'package:one_key/utils/navigator_util.dart';
import 'package:one_key/widgets/page_exception.dart';
import 'package:one_key/widgets/round_button.dart';
import 'package:one_key/widgets/system_app_bar.dart';
import 'package:one_key/widgets/v_empty_view.dart';
import 'package:provider/provider.dart';
/**
* 优惠券列表
*/
class CouponPage extends StatefulWidget {
CouponPage({Key key}) : super(key: key);
@override
_CouponPageState createState() => _CouponPageState();
}
class _CouponPageState extends State<CouponPage> {
EasyRefreshController _controller = EasyRefreshController();
CouponProvider couponProvider;
///获取优惠券列表数据
_couponNetworkData() {
return Future.delayed(Duration(seconds: 1),
() => couponProvider.pageState = PageState.Success);
}
@override
void initState() {
// TODO: implement initState
super.initState();
WidgetsBinding.instance.addPostFrameCallback((_) {
_couponNetworkData();
});
}
@override
Widget build(BuildContext context) {
couponProvider = Provider.of<CouponProvider>(context, listen: true);
return Scaffold(
appBar: SystemAppBar('线上券', rightImgName: '历史券', onTap: () {
EventBus().emit('changeStatusColor');
Navigator.of(context).pop();
}, onTapRight: () {
NavigatorUtil.goCouponHistoryPage(context);
}),
body: Column(
children: [
Expanded(child: Consumer<CouponProvider>(
builder: (context, model, _) {
if (model.pageState != PageState.Success) {
return ExceptionPage(
pageState: model.pageState,
callback: () {
// offset = 0;
// getMessage(showLoading: true);
},
emptyMsg: "暂时没有列表信息哦",
emptyImg: "empty_search",
showMsg: "加载中，请稍后...",
);
} else {
return EasyRefresh.custom(
controller: _controller,
shrinkWrap: true,
slivers: [
SliverList(
delegate: SliverChildBuilderDelegate(
(BuildContext context, int index) {
return Container(
padding:
EdgeInsets.all(ScreenUtil().setWidth(20)),
child: Text(
'使用说明：回家啊喝点酒啊喝酒啊电话噶记得发快递费哈咖啡和大号发客服哈空腹喝酒啊快递费哈快递费哈看警方还会发卡号发快回复'));
}, childCount: 1),
),
SliverList(
delegate: SliverChildBuilderDelegate(
(BuildContext context, int index) {
return CouponItem(
index: index,
couponProvider: couponProvider,
showBtn: true,
onPressed: () {
couponProvider.swichStateData[index] =
!couponProvider.swichStateData[index];
couponProvider.notifyListeners();
},
);
}, childCount: couponProvider.swichStateData.length),
)
],
onRefresh: () async {
// offset = 0;
// getMessage(showLoading: false);
},
onLoad: () async {
// offset++;
// getMessage(showLoading: false);
},
);
}
},
)),
VEmptyView(20),
Padding(
padding: EdgeInsets.fromLTRB(ScreenUtil().setWidth(40), 0,
ScreenUtil().setWidth(40), ScreenUtil().setWidth(40)),
child: RoundButton(
onPressed: () async {
bool needRefresh =
await NavigatorUtil.goCouponEditPage(context);
print(needRefresh);
if (needRefresh != null && needRefresh) {
//刷新页面数据
_controller.callRefresh();
}
},
text: '创建新券',
fontSize: 34,
isBold: false,
height: ScreenUtil().setWidth(80),
width: double.infinity,
radius: ScreenUtil().setWidth(10),
))
],
));
}
}