回鄉錢包，UI修改

lib/mine/mine_wallet_page.dart

@@ -370,7 +370,7 @@ class _MineWalletPage extends State<MineWalletPage> {
   }
 
   List<String> calculateBalance(UserBill userBill, int index) {
-    double tbalance = double.tryParse(userBill.balance ?? "0");/// 总余额
+    double tbalance = double.tryParse(userBill.number ?? "0");/// 总余额
     String surplusGreenMoney = userBill.surplusGreenMoney;
     String surplusActivityMoney = userBill.surplusActivityMoney;
     double surplusMoney = double.tryParse(surplusGreenMoney ?? "0");
@@ -402,7 +402,7 @@ class _MineWalletPage extends State<MineWalletPage> {
           "${userBill.pm == 0 ? '-' : '+'}$activity"
         ];
       }
-      if (money > 0) {
+      if (money > 0 && (balance - money) > 0) {
         return [
           S.of(context).yue,
           "${userBill.pm == 0 ? '-' : '+'}${(balance - money)}"