ios - About geting transaction id from paypal in iphone

Question

I have implement paypal library for payment in my iphone project.

How can I retrieve transaction id after following method called successfully.

-(void)paymentSuccessWithKey:(NSString *)payKey andStatus:(PayPalPaymentStatus)paymentStatus {
    status = PAYMENTSTATUS_SUCCESS;
}

- (void)paymentLibraryExit 
{
    UIAlertView *alert1 = nil;

    switch (status) 
        {           
        case PAYMENTSTATUS_SUCCESS:            
                {
                   .......
                   ...........
                }
                ...............
                ..............
         }
}

Answer 1

The "payKey" in below method is the transactionID.

-(void)paymentSuccessWithKey:(NSString *)payKey andStatus:(PayPalPaymentStatus)paymentStatus {
    status = PAYMENTSTATUS_SUCCESS;
}