Updated on 2026-08-14

features/swap/domain/src/main/java/com/tangem/feature/swap/domain/SwapInteractorImpl.kt

@@ -610,6 +610,7 @@ internal class SwapInteractorImpl @Inject constructor(
                 requestApproveData = RequestApproveStateData(
                     fee = feeState,
                     approveData = transactionData,
+                    fromTokenAmount = swapAmount,
                 ),
             ),
             preparedSwapConfigState = quotesLoadedState.preparedSwapConfigState.copy(

features/swap/domain/src/main/java/com/tangem/feature/swap/domain/models/ui/SwapState.kt

@@ -59,6 +59,7 @@ data class TokenSwapInfo(
 data class RequestApproveStateData(
     val fee: TxFeeState,
     val approveData: String,
+    val fromTokenAmount: SwapAmount,
 )
 
 data class SwapStateData(

features/swap/presentation/src/main/java/com/tangem/feature/swap/viewmodels/SwapViewModel.kt

@@ -490,7 +490,9 @@ internal class SwapViewModel @Inject constructor(
             },
             onSelectItemFee = { feeItem ->
                 dataState = dataState.copy(selectedFee = feeItem.data)
-                val spendAmount = dataState.swapDataModel?.swapModel?.fromTokenAmount ?: return@UiActions
+                val spendAmount = dataState.swapDataModel?.swapModel?.fromTokenAmount
+                    ?: dataState.approveDataModel?.fromTokenAmount
+                spendAmount ?: return@UiActions
                 val fromToken = dataState.fromCurrency ?: return@UiActions
                 viewModelScope.launch(dispatchers.io) {
                     val isFeeEnough = swapInteractor.checkFeeIsEnough(