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Handle transaction state changes

Delegate

The transactionStateChanged delegate is called when the state of the transaction changes.

This method can be used to reflect the progress in the user-interface.

Parameters

Name	Type	Required	Description
`state`	ADYTenderState		The new transaction-processing state.

Tender states

State	Description
`ADYTenderStateInitial`	The initial state where the tender will start from.
`ADYTenderStateCreated`	The state where the tender has been created in the payment device and a transaction is born. From this state onwards, transactions will be recorded in the transaction history, independent of the final state of such transaction.
`ADYTenderStateProcessing`	The state after tender creation where the transaction is in progress.
`ADYTenderStateProvideCardDetails`	The payment device is waiting for the card details to be provided by the App.
`ADYTenderStateCardDetailsProvided`	The payment device has received the provided card details and is processing these.
`ADYTenderStateAdditionalDataAvailable`	Additional data is available and is passed to the App.
`ADYTenderStateWaitForAmountAdjustment`	The payment device is waiting for any tender updates the App might decide to, based upon the information passed to the App in the previous state.
`ADYTenderStateReferral`	The Issuing bank requests a referral (not implemented yet)
`ADYTenderStateReferralChecked`	The authorization code, as retrieved form the Issuing bank, is sent to the payment device.
`ADYTenderStateCheckSignature`	The signature needs to be recorded/checked.
`ADYTenderStateSignatureChecked`	The signature has been recorded/processed.
`ADYTenderStatePrintReceipt`	The receipt is provided to the App and needs to be processed.
`ADYTenderStateReceiptPrinted`	The receipt has been processed.
`ADYTenderStateWaitingForAppSelection`	The payment method is being selected.
`ADYTenderStateAppSelected`	The payment method has been selected. The selected payment method is passed to the `ADYTransactionProcessorDelegate` function `transactionApplicationSelected:`.
`ADYTenderStateWaitingForPin`	The payment device is waiting for the customer to enter their PIN.
`ADYTenderStatePinDigitEntered`	The customer has entered a PIN digit. The total number of digits provided is passed to the `ADYTransactionProcessorDelegate` function `transactionPinDigitEntered:`.
`ADYTenderStatePinEntered`	The customer has completed entering their PIN.
`ADYTenderStateCardSwiped`	The customer swiped a payment card through the swipe slot.
`ADYTenderStateCardInserted`	The customer inserted their card into the EMV slot.
`ADYTenderStateCardRemoved`	The customer removed their card from the EMV slot.
`ADYTenderStateAskDcc`	The customer is being asked if Dynamic Currency Conversion should be applied.
`ADYTenderStateDccAccepted`	The customer accepted the Dynamic Currency Conversion.
`ADYTenderStateDccRejected`	The customer rejected Dynamic Currency Conversion

Final States

State	Description
`ADYTenderStateApproved`	The transaction has been completed with result: APPROVED
`ADYTenderStateDeclined`	The transaction has been completed with result: DECLINED
`ADYTenderStateCancelled`	The transaction has been completed with result: CANCELLED
`ADYTenderStateError`	The transaction has been completed with result: ERROR
`ADYTenderStateUnknown`	The transaction has been completed with the result: UNKNOWN. To fetch the final state of the transaction, query the payment device for the transaction details by calling `- [ADYDevice fetchLastTransactionDataWithCompletion:]` or `- [ADYDevice fetchTransactionDataWithTenderReference:]`.

Declaration code example

Objective-C

- (void)transactionStateChanged:(ADYTenderState)state;

Swift

optional func transactionStateChanged(_ state: Any!)