coupon_selecet_page.dart
7.51 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
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/res/colors.dart';
import 'package:one_key/utils/event_bus.dart';
import 'package:one_key/utils/navigator_util.dart';
import 'package:one_key/utils/utils.dart';
import 'package:one_key/widgets/h_empty_view.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';
class CouponSelectPage extends StatefulWidget {
CouponSelectPage({Key key}) : super(key: key);
@override
_CouponSelectPageState createState() => _CouponSelectPageState();
}
class _CouponSelectPageState extends State<CouponSelectPage> {
EasyRefreshController _controller = EasyRefreshController();
CouponProvider couponProvider;
///获取优惠券列表数据
_couponNetworkData() {
return Future.delayed(Duration(seconds: 1), () {
couponProvider.pageStateSelect = PageState.Success;
couponProvider.notifyListeners();
});
}
@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(
'优惠券',
onTap: () {
Navigator.pop(context);
Utils.changeStatusColor(color: Colors.transparent);
},
rightImgName: couponProvider.checkValue ? '取消全选' : '全选',
onTapRight: () {
if (couponProvider.checkValue) {
couponProvider.cancelAll();
} else {
couponProvider.addAll();
}
},
),
body: WillPopScope(
child: Column(
children: [
Expanded(child: Consumer<CouponProvider>(
builder: (context, model, _) {
if (model.pageStateSelect != PageState.Success) {
return ExceptionPage(
pageState: model.pageStateSelect,
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 InkWell(
onTap: () {
couponProvider.listData[index]['checked'] =
!couponProvider.listData[index]['checked'];
if (couponProvider.listData[index]['checked']) {
couponProvider.addData(index);
} else {
couponProvider.cancelData(index);
}
couponProvider.getCheckValue();
},
child: Row(
children: [
HEmptyView(30),
Checkbox(
value: couponProvider.listData[index]
['checked'],
checkColor: MyColours.color_ffffff,
activeColor: MyColours.app_main,
onChanged: (bool value) {
couponProvider.listData[index]['checked'] =
!couponProvider.listData[index]
['checked'];
if (couponProvider.listData[index]
['checked']) {
couponProvider.addData(index);
} else {
couponProvider.cancelData(index);
}
couponProvider.getCheckValue();
},
),
// Image.asset(
// couponProvider.listData[index]['checked']
// ? 'assets/select.png'
// : 'assets/unselect.png',
// width: ScreenUtil().setWidth(44)),
Expanded(
child: CouponItem(
index: index,
couponProvider: couponProvider,
onPressed: () {
couponProvider.listData[index]['checked'] =
!couponProvider.listData[index]
['checked'];
if (couponProvider.listData[index]
['checked']) {
couponProvider.addData(index);
} else {
couponProvider.cancelData(index);
}
couponProvider.getCheckValue();
},
))
],
),
);
}, childCount: couponProvider.listData.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: () {
Navigator.pop(context);
},
text: '已选${couponProvider.coupons.length}个 确定',
fontSize: 34,
isBold: false,
height: ScreenUtil().setWidth(80),
width: double.infinity,
radius: ScreenUtil().setWidth(10),
))
],
),
onWillPop: () async {
Utils.changeStatusColor(color: Colors.transparent);
Navigator.of(context).pop();
return true;
},
),
);
}
}