Initiate Payment

Once user selects one of the payment instrument and clicks on pay, call the Create Order API from your backend and get the Order Token and merchant order id.

Call PhonePeKt.startTransaction to start the transaction flow.

import com.phonepe.intent.sdk.api.PhonePeInitException
import com.phonepe.intent.sdk.api.PhonePeKt
import com.phonepe.intent.sdk.api.models.transaction.TransactionRequest

try{
 PhonePeKt.startTransaction(
  context = this,
   request = TransactionRequest(
      orderId = "Order_123",
      token = "OrderTokenValue",
      paymentMode = paymentMode
      ),
   activityResultLauncher = activityResultLauncher
 )
} 
catch(ex: PhonePeInitException){
   // Transaction could not be started.
   // Either re-init the SDK and call startTransaction again or use other instruments to complete your transaction.
}

When user selects an instrument, pass the type and iD of the selected instrument to getPaymentMode method to get the paymentMode.

PpeIntentPaymentMode(
    instrumentType: String,
    instrumentId: String?)

import com.phonepe.intent.sdk.api.models.transaction.paymentMode.PpeIntentPaymentMode

val paymentMode = PpeIntentPaymentMode(instrument.type, instrument.id)

Get Payment completion result in your activityResultLauncher in your activity or fragment.

private val activityResultLauncher: ActivityResultLauncher<Intent> = registerForActivityResult(
    StartActivityForResult()
) { 
    // Todo: call Order Status API
}

Once you get callback from SDK, you need to call the Order Status API, to get the final status of the payment.