phase3: mobile/shop clean (categoryDescHeight double, FooterBuilder LoadStatus?, nullable fixes); edit_address .buttonColor->colorScheme.primary. 131->118

lib/widgets/desktop/desktop_edit_address.dart

@@ -430,7 +430,7 @@ class DesktopEditAddressState extends State<DesktopEditAddress> {
         padding: EdgeInsets.all(8.0),
         color: Theme
             .of(context)
-            .buttonColor,
+            .colorScheme.primary,
         child: Row(
           mainAxisAlignment: MainAxisAlignment.spaceBetween,
           children: <Widget>[

lib/widgets/mobile/mobile_edit_address.dart

@@ -406,7 +406,7 @@ class MobileEditAddressState extends State<MobileEditAddress> {
         padding: EdgeInsets.all(8.0),
         color: Theme
             .of(context)
-            .buttonColor,
+            .colorScheme.primary,
         child: Row(
           mainAxisAlignment: MainAxisAlignment.spaceBetween,
           children: <Widget>[

lib/widgets/mobile/shop.dart

@@ -70,7 +70,7 @@ class ShopState extends State<Shop>
   int _productCurrentPage = 1;
 
   static const num _categoryHeight = 50.0;
-  static const num _categoryDescHeight = 50.0;
+  static const double _categoryDescHeight = 50.0;
   static const num _productHeight = Constants.PRODUCT_ITEM_HEIGHT_H;
 
   int _categoryIndex = 0;
@@ -409,7 +409,7 @@ class ShopState extends State<Shop>
               ),
             ],
             title: Text(
-              _business != null ? _business.name : '',
+              _business != null ? _business.name! : '',
               style: TextStyle(
                 color: Colors.white,
               ),
@@ -725,7 +725,7 @@ class ShopState extends State<Shop>
       enablePullDown: true,
       header: WaterDropHeader(),
       footer: CustomFooter(
-        builder: (BuildContext context, LoadStatus mode) {
+        builder: (BuildContext context, LoadStatus? mode) {
           Widget footer;
           if (mode == LoadStatus.idle) {
             footer = Text(S.of(context).pull_up_to_load_more);
@@ -781,7 +781,7 @@ class ShopState extends State<Shop>
     addressColumn.children.add(new Text(
       _business.address!.city! +
           ', ' +
-          _business.address!.state +
+          _business.address!.state! +
           ', ' +
           _business.address!.zip!,
       style: new TextStyle(fontSize: 13.0, color: const Color(0xFFEEEEEE)),
@@ -801,7 +801,7 @@ class ShopState extends State<Shop>
       ));
       distanceRow.children.add(new Text(
         _business.distanceInfo!.distance != null
-            ? _business.distanceInfo!.distance!.text
+            ? _business.distanceInfo!.distance!.text!
             : '***' + ' / ',
         style: new TextStyle(color: const Color(0xFFEEEEEE), fontSize: 13.0),
       ));
@@ -912,7 +912,7 @@ class ShopState extends State<Shop>
                           new Text(
                             _business.openingTime![0].openTime! +
                                 ':00 - ' +
-                                _business.openingTime![0].closeTime +
+                                _business.openingTime![0].closeTime! +
                                 ':00',
                             style: new TextStyle(
                                 fontSize: 13.0, color: const Color(0xFFEEEEEE)),
@@ -956,7 +956,7 @@ class ShopState extends State<Shop>
               width: mediaQuery.size.width - 30.0,
               padding: EdgeInsets.only(right: 10.0, bottom: 10.0),
               child: new Text(
-                _business.bulletin!.isEmpty ? '' : _business.bulletin,
+                _business.bulletin!.isEmpty ? '' : _business.bulletin!,
                 softWrap: true,
                 style: new TextStyle(
                     fontSize: 12.0, color: const Color(0xFFDDDDDD)),
@@ -1137,7 +1137,7 @@ class ShopState extends State<Shop>
               CategoryProducts cp = _categoryProducts[i];
               int qtyInCategory = 0;
               CartInfo cartInfo =
-              Utils.getCartInfoByBusiness(store.state.cartInfos, _business);
+              Utils.getCartInfoByBusiness(store.state.cartInfos, _business)!;
               if (cartInfo != null &&
                   cartInfo.businessInfo!.id == _business.id &&
                   cartInfo.productList != null) {
@@ -1245,7 +1245,7 @@ class ShopState extends State<Shop>
     }
   }
 
-  CategoryProducts getCategoryProductByCategoryId(int cid) {
+  CategoryProducts? getCategoryProductByCategoryId(int cid) {
     for (CategoryProducts cp in _categoryProducts) {
       if (cp.id == cid) {
         return cp;
@@ -1371,7 +1371,7 @@ class ShopState extends State<Shop>
                 children: <Widget>[],
               );
               col.children.add(new Container(
-                  height: _categoryDescHeight!,
+                  height: _categoryDescHeight,
                   padding: new EdgeInsets.symmetric(horizontal: 10.0),
                   color: new Color(0xFFF5F5F5),
                   child: new Row(
@@ -1629,7 +1629,7 @@ class ShopState extends State<Shop>
                       S.of(context).pull_up_to_load_more;
                 }
                 CategoryProducts currentCp =
-                getCategoryProductByCategoryId(categoryId);
+                getCategoryProductByCategoryId(categoryId)!;
                 if (currentCp != null) {
                   currentCp.products!.addAll(moreCategoryProducts[0].products!);
                 } else {
@@ -1843,7 +1843,7 @@ class ShopState extends State<Shop>
           });
     } else {
       DateTime now = DateTime.now();
-      if (!(now.hour >= business.todayOpen &&
+      if (!(now.hour >= business.todayOpen! &&
           now.hour <= business.todayClose!)) {
         showDialog(
             context: context,