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sion
2026-04-07 02:02:14 +08:00
parent 27d5b753c5
commit 32a39f0b09
2 changed files with 7 additions and 2 deletions
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flutter_monisuo/build/99111e0c5b6228829e100ef67db14ea2.cache.dill.track.dill
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flutter_monisuo/lib/ui/pages/trade/trade_page.dart
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@@ -107,7 +107,9 @@ class _TradePageState extends State<TradePage>
final amount = double.tryParse(_amountController.text) ?? 0; final amount = double.tryParse(_amountController.text) ?? 0;
final price = _selectedCoin?.price ?? 0; final price = _selectedCoin?.price ?? 0;
if (price <= 0 || amount <= 0) return '0'; if (price <= 0 || amount <= 0) return '0';
return (amount / price).toStringAsFixed(6); // 向下截斷到4位小數，避免回算超出金額
final qty = amount / price;
return ((qty * 10000).truncateToDouble() / 10000).toStringAsFixed(4);
} }
@override @override
@@ -207,7 +209,10 @@ class _TradePageState extends State<TradePage>
final max = double.tryParse(_maxAmount) ?? 0; final max = double.tryParse(_maxAmount) ?? 0;
final value = max * pct; final value = max * pct;
// 向下截斷到2位小數，避免四捨五入超出可用餘額 // 向下截斷到2位小數，避免四捨五入超出可用餘額
_amountController.text = ((value * 100).truncateToDouble() / 100).toStringAsFixed(2); // 向下截斷到2位小數，再減0.01作為安全緩衝，避免精度問題導致餘額不足
final truncated = ((value * 100).truncateToDouble() / 100);
final safe = truncated > 0.01 ? truncated - 0.01 : truncated;
_amountController.text = safe.toStringAsFixed(2);
setState(() {}); setState(() {});
} }