Updated on 2026-08-14

core/ui/src/main/java/com/tangem/core/ui/components/fields/AmountTextField.kt

@@ -64,6 +64,7 @@ fun AmountTextField(
         keyboardType = KeyboardType.Number,
     ),
     keyboardActions: KeyboardActions = KeyboardActions.Default,
+    isEnabled: Boolean = true,
     isAutoResize: Boolean = false,
     @FloatRange(from = 0.0, to = 1.0, fromInclusive = false, toInclusive = false)
     reduceFactor: Double = 0.9,
@@ -106,21 +107,20 @@ fun AmountTextField(
             textStyle = textStyle.copy(
                 fontSize = fontSize,
                 textDirection = TextDirection.ContentOrLtr,
-                textAlign = TextAlign.Center,
             ),
             color = color,
             keyboardOptions = keyboardOptions,
             keyboardActions = keyboardActions,
             singleLine = true,
+            readOnly = !isEnabled,
             visualTransformation = AmountVisualTransformation(decimals, symbol, decimalFormat),
             modifier = Modifier.background(TangemTheme.colors.background.action),
             decorationBox = { innerTextField ->
                 Box {
                     if (value.isBlank() && showPlaceholder) {
-                        val placeholder = if (symbol != null) {
-                            decimalFormat.defaultFormat().plus(" $symbol")
-                        } else {
-                            decimalFormat.defaultFormat()
+                        var placeholder = decimalFormat.defaultFormat()
+                        if (symbol != null) {
+                            placeholder = placeholder.plus(" $symbol")
                         }
                         Text(
                             text = placeholder,

core/utils/src/main/java/com/tangem/utils/coroutines/JobHolder.kt

@@ -11,10 +11,11 @@ class JobHolder {
 
     private var job: Job? = null
 
-    /** Update current [job] */
-    fun update(job: Job?) {
+    /** Update current [JobHolder.job] and return new [job] */
+    fun update(job: Job): Job {
         this.job?.cancel()
         this.job = job
+        return job
     }
 
     /** Cancel current [job] */
@@ -23,4 +24,4 @@ class JobHolder {
     }
 }
 
-fun Job.saveIn(jobHolder: JobHolder) = jobHolder.update(job = this)
+fun Job.saveIn(jobHolder: JobHolder): Job = jobHolder.update(job = this)

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/state/amount/AmountStateFactory.kt

@@ -50,4 +50,11 @@ internal class AmountStateFactory(
             amountState = state.amountState?.copy(notifications = notifications),
         )
     }
+
+    fun getOnAmountFeeLoadingCancel(): SendUiState {
+        val state = currentStateProvider()
+        return state.copy(
+            amountState = state.amountState?.copy(isFeeLoading = false),
+        )
+    }
 }

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/ui/SendNavigationButtons.kt

@@ -104,7 +104,7 @@ private fun SendNavigationButton(
                 modifier = Modifier
                     .clip(RoundedCornerShape(TangemTheme.dimens.radius16))
                     .background(TangemTheme.colors.button.secondary)
-                    .clickable(enabled = !showProgress) { uiState.clickIntents.onPrevClick() }
+                    .clickable { uiState.clickIntents.onPrevClick() }
                     .padding(TangemTheme.dimens.spacing12),
             )
         }

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/ui/amount/AmountButtons.kt

@@ -28,6 +28,7 @@ private const val AMOUNT_BUTTONS_KEY = "amountButtonsKey"
 internal fun LazyListScope.buttons(
     segmentedButtonConfig: PersistentList<SendAmountSegmentedButtonsConfig>,
     clickIntents: SendClickIntents,
+    isMaxButtonEnabled: Boolean,
 ) {
     item(
         key = AMOUNT_BUTTONS_KEY,
@@ -55,6 +56,7 @@ internal fun LazyListScope.buttons(
             }
             SecondaryButton(
                 text = stringResource(R.string.send_max_amount),
+                enabled = isMaxButtonEnabled,
                 onClick = {
                     hapticFeedback.performHapticFeedback(HapticFeedbackType.LongPress)
                     clickIntents.onMaxValueClick()

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/ui/amount/AmountField.kt

@@ -22,7 +22,7 @@ import com.tangem.core.ui.utils.rememberDecimalFormat
 import com.tangem.features.send.impl.presentation.state.fields.SendTextField
 
 @Composable
-internal fun AmountField(sendField: SendTextField.AmountField, isFiat: Boolean) {
+internal fun AmountField(sendField: SendTextField.AmountField, isFiat: Boolean, isEnabled: Boolean) {
     val decimalFormat = rememberDecimalFormat()
     val (primaryValue, secondaryValue) = if (isFiat) {
         sendField.fiatValue to sendField.value
@@ -47,6 +47,7 @@ internal fun AmountField(sendField: SendTextField.AmountField, isFiat: Boolean)
             color = TangemTheme.colors.text.primary1,
             textAlign = TextAlign.Center,
         ),
+        isEnabled = isEnabled,
         placeholderAlignment = TopCenter,
         modifier = Modifier
             .padding(

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/ui/amount/AmountFieldContainer.kt

@@ -63,6 +63,7 @@ internal fun LazyListScope.amountField(
             AmountField(
                 sendField = amountState.amountTextField,
                 isFiat = amountState.amountTextField.isFiatValue,
+                isEnabled = !amountState.isFeeLoading,
             )
         }
     }

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/ui/amount/SendAmountContent.kt

@@ -28,7 +28,11 @@ internal fun SendAmountContent(
             .background(TangemTheme.colors.background.tertiary),
     ) {
         amountField(amountState = amountState, isBalanceHiding = isBalanceHiding)
-        buttons(amountState.segmentedButtonConfig, clickIntents)
+        buttons(
+            segmentedButtonConfig = amountState.segmentedButtonConfig,
+            clickIntents = clickIntents,
+            isMaxButtonEnabled = !amountState.isFeeLoading,
+        )
         notifications(amountState.notifications)
     }
 }

features/send/impl/src/main/java/com/tangem/features/send/impl/presentation/viewmodel/SendViewModel.kt

@@ -482,7 +482,11 @@ internal class SendViewModel @Inject constructor(
 
     // region screen state navigation
     override fun popBackStack() = stateRouter.popBackStack()
-    override fun onBackClick() = stateRouter.onBackClick(isSuccess = uiState.sendState?.isSuccess == true)
+    override fun onBackClick() {
+        cancelFeeRequest()
+        stateRouter.onBackClick(isSuccess = uiState.sendState?.isSuccess == true)
+    }
+
     override fun onNextClick() {
         val currentState = stateRouter.currentState.value
         sendOnNextScreenAnalyticSender.send(currentState.type, uiState)
@@ -504,7 +508,10 @@ internal class SendViewModel @Inject constructor(
         stateRouter.onNextClick()
     }
 
-    override fun onPrevClick() = stateRouter.onPrevClick()
+    override fun onPrevClick() {
+        cancelFeeRequest()
+        stateRouter.onPrevClick()
+    }
 
     override fun onQrCodeScanClick() {
         analyticsEventHandler.send(SendAnalyticEvents.QrCodeButtonClicked)
@@ -541,6 +548,12 @@ internal class SendViewModel @Inject constructor(
             false
         }
     }
+
+    private fun cancelFeeRequest() {
+        viewModelScope.launch(dispatchers.main) {
+            feeJobHolder.cancel()
+        }
+    }
     // endregion
 
     // region amount state clicks
@@ -691,6 +704,9 @@ internal class SendViewModel @Inject constructor(
             updateFeeNotifications()
             updateAmountNotifications()
         }.saveIn(feeJobHolder)
+            .invokeOnCompletion {
+                uiState = amountStateFactory.getOnAmountFeeLoadingCancel()
+            }
     }
 
     private suspend fun checkIfSubtractAvailable() {