Updated on 2026-08-14

app/src/main/java/com/tangem/tap/features/send/redux/reducers/SendReducer.kt

@@ -3,10 +3,10 @@ package com.tangem.tap.features.send.redux.reducers
 import com.tangem.blockchain.common.WalletManager
 import com.tangem.tap.common.CurrencyConverter
 import com.tangem.tap.features.send.redux.*
+import com.tangem.tap.features.send.redux.states.IdStateHolder
 import com.tangem.tap.features.send.redux.states.SendState
 import com.tangem.tap.store
 import org.rekotlin.Action
-import org.rekotlin.StateType
 import timber.log.Timber
 import java.math.BigDecimal
 
@@ -34,7 +34,7 @@ class SendReducer {
 
 
             val newState = reducer.handle(action, sendState).copy(sendButtonIsEnabled = sendState.isReadyToSend())
-            Timber.i("${newState.lastChangedStateType}.")
+            Timber.i("${newState.lastChangedStates}.")
 
             return newState
         }
@@ -63,5 +63,7 @@ private class PrepareSendScreenStatesReducer : SendInternalReducer {
     }
 }
 
-internal fun updateLastState(sendState: SendState, lastChangedState: StateType): SendState =
-        sendState.copy(lastChangedStateType = lastChangedState)
+internal fun updateLastState(sendState: SendState, lastChangedState: IdStateHolder): SendState {
+    sendState.lastChangedStates.add(lastChangedState.stateId)
+    return sendState
+}

app/src/main/java/com/tangem/tap/features/send/redux/states/AddressPayIdState.kt

@@ -1,7 +1,6 @@
 package com.tangem.tap.features.send.redux.states
 
 import com.tangem.tap.features.send.redux.AddressPayIdVerifyAction
-import org.rekotlin.StateType
 
 data class AddressPayIdState(
         val etFieldValue: String? = null,
@@ -10,8 +9,9 @@ data class AddressPayIdState(
         val recipientWalletAddress: String? = null,
         val error: AddressPayIdVerifyAction.Error? = null,
         val truncateHandler: ((String) -> String)? = null,
-        val pasteIsEnabled: Boolean = false
-) : StateType {
+        val pasteIsEnabled: Boolean = false,
+        override val stateId: StateId = StateId.ADDRESS_PAY_ID
+) : SendScreenState {
 
     fun isReady(): Boolean = error == null && recipientWalletAddress?.isNotEmpty() ?: false
 

app/src/main/java/com/tangem/tap/features/send/redux/states/FeeState.kt

@@ -2,7 +2,6 @@ package com.tangem.tap.features.send.redux.states
 
 import com.tangem.blockchain.common.Amount
 import com.tangem.tap.features.send.redux.FeeAction
-import org.rekotlin.StateType
 import java.math.BigDecimal
 
 /**
@@ -20,8 +19,9 @@ data class FeeState(
         val mainLayoutIsVisible: Boolean = false,
         val controlsLayoutIsVisible: Boolean = true,
         val feeChipGroupIsVisible: Boolean = true,
-        val error: FeeAction.Error? = null
-) : StateType {
+        val error: FeeAction.Error? = null,
+        override val stateId: StateId = StateId.FEE
+) : SendScreenState {
     fun isReady(): Boolean = error == null && currentFee != null
 
     fun getCurrentFee(): BigDecimal = currentFee?.value?.value ?: BigDecimal.ZERO

app/src/main/java/com/tangem/tap/features/send/redux/states/ReceiptState.kt

@@ -1,7 +1,5 @@
 package com.tangem.tap.features.send.redux.states
 
-import org.rekotlin.StateType
-
 // Shows only one type of the layout
 enum class ReceiptLayoutType {
     UNKNOWN, FIAT, CRYPTO, TOKEN_FIAT, TOKEN_CRYPTO
@@ -14,7 +12,8 @@ data class ReceiptState(
         val tokenFiat: ReceiptTokenFiat? = null,
         val tokenCrypto: ReceiptTokenCrypto? = null,
         val mainCurrencyType: Value<MainCurrencyType>? = null,
-) : StateType
+        override val stateId: StateId = StateId.RECEIPT
+) : SendScreenState
 
 data class ReceiptSymbols(
         val fiat: String,

app/src/main/java/com/tangem/tap/features/send/redux/states/SendState.kt

@@ -14,17 +14,29 @@ import java.math.BigDecimal
 /**
 [REDACTED_AUTHOR]
  */
+
+interface IdStateHolder {
+    val stateId: StateId
+}
+
+enum class StateId {
+    SEND_SCREEN, ADDRESS_PAY_ID, AMOUNT, FEE, RECEIPT
+}
+
+interface SendScreenState : StateType, IdStateHolder
+
 data class SendState(
         val amount: Amount? = null,
         val walletManager: WalletManager? = null,
         val currencyConverter: CurrencyConverter = CurrencyConverter(BigDecimal.ONE),
-        val lastChangedStateType: StateType = NoneState(),
+        val lastChangedStates: LinkedHashSet<StateId> = linkedSetOf(),
         val addressPayIdState: AddressPayIdState = AddressPayIdState(),
         val amountState: AmountState = AmountState(),
         val feeState: FeeState = FeeState(),
         val receiptState: ReceiptState = ReceiptState(),
         val sendButtonIsEnabled: Boolean = false,
-) : StateType {
+        override val stateId: StateId = StateId.SEND_SCREEN
+) : SendScreenState {
 
     fun isReadyToSend(): Boolean {
         val sendState = store.state.sendState
@@ -39,8 +51,6 @@ data class SendState(
     }
 }
 
-class NoneState : StateType
-
 data class AmountState(
         val viewAmountValue: String = BigDecimal.ZERO.toPlainString(),
         val viewBalanceValue: String = BigDecimal.ZERO.toPlainString(),
@@ -50,8 +60,9 @@ data class AmountState(
         val balanceCrypto: BigDecimal = BigDecimal.ZERO,
         val cursorAtTheSamePosition: Boolean = true,
         val maxLengthOfAmount: Int = 2,
-        val error: AmountAction.Error? = null
-) : StateType {
+        val error: AmountAction.Error? = null,
+        override val stateId: StateId = StateId.AMOUNT
+) : SendScreenState {
     fun isReady(): Boolean = error == null && !amountToSendCrypto.isZero()
 }
 

app/src/main/java/com/tangem/tap/features/send/ui/SendFragment.kt

@@ -92,12 +92,12 @@ class SendFragment : BaseStoreFragment(R.layout.fragment_send) {
 
         store.dispatch(ChangeAddressOrPayId(scannedCode))
         store.dispatch(TruncateOrRestore(!etAddressOrPayId.isFocused))
-        mainView.postDelayed(200) { store.dispatch(FeeAction.RequestFee) }
+        store.dispatch(FeeAction.RequestFee)
     }
 
     private fun setupAmountLayout() {
         store.dispatch(SetMainCurrency(restoreMainCurrency()))
-        mainView.postDelayed(200) { store.dispatch(ReceiptAction.RefreshReceipt) }
+        store.dispatch(ReceiptAction.RefreshReceipt)
 
         tvAmountCurrency.setOnClickListener {
             store.dispatch(ToggleMainCurrency)

app/src/main/java/com/tangem/tap/features/send/ui/stateSubscribers/SendStateSubscriber.kt

@@ -34,15 +34,17 @@ import kotlinx.android.synthetic.main.layout_send_receipt.*
 class SendStateSubscriber(fragment: BaseStoreFragment) : FragmentStateSubscriber<SendState>(fragment) {
 
     override fun updateWithNewState(fg: BaseStoreFragment, state: SendState) {
-        when (state.lastChangedStateType) {
-            is FeeState -> handleFeeState(fg, state.feeState)
-            is AddressPayIdState -> handleAddressPayIdState(fg, state.addressPayIdState)
-            is AmountState -> handleAmountState(fg, state.amountState)
-            is ReceiptState -> handleReceiptState(fg, state.receiptState)
+        val lastChangedStates = state.lastChangedStates.toList()
+        state.lastChangedStates.clear()
+        lastChangedStates.forEach {
+            when (it) {
+                StateId.ADDRESS_PAY_ID -> handleAddressPayIdState(fg, state.addressPayIdState)
+                StateId.AMOUNT -> handleAmountState(fg, state.amountState)
+                StateId.FEE -> handleFeeState(fg, state.feeState)
+                StateId.RECEIPT -> handleReceiptState(fg, state.receiptState)
+            }
         }
-
         fg.btnSend.isEnabled = state.sendButtonIsEnabled
-        fg.imvPaste.isEnabled = state.addressPayIdState.pasteIsEnabled
     }
 
     private fun handleAddressPayIdState(fg: BaseStoreFragment, state: AddressPayIdState) {
@@ -59,6 +61,7 @@ class SendStateSubscriber(fragment: BaseStoreFragment) : FragmentStateSubscriber
             return if (resId == null) null
             else context.getString(resId)
         }
+        fg.imvPaste.isEnabled = state.pasteIsEnabled
 
         val et = fg.etAddressOrPayId
         val til = fg.tilAddressOrPayId