Stripe error "create token with card(_:completion:) is unavailable" - swift

Question

In this line, the error was Display. Can someone tell me what mistake was made?
Stripe.createTokenWithCard(card, completion: { (token: STPToken!, error: NSError!) -> Void in
self.handleToken(token)

Answer 1

I had the same problem after updating Stripe in pods recently. That method is deprecated. Instead, you can use the following code:
STPAPIClient.sharedClient().createTokenWithCard(card, completion: { (token: STPToken!, error: NSError!) -> Void in
})
It takes the same parameters.
Update
Thanks to #Christine and #Keyhole150
This function in Stripe API has now be changed to
STPAPIClient.sharedClient().createTokenWithCard(card, completion: { (token: STPToken?, error: NSError?) -> Void in
})

Answer 2

Thanks, #Shali! Your tip is helpful.
For those who are beginners like me, you might still get an error. In case you experience an error indicating either an extra argument in call before adding sharedClient() or how createTokenWithCard cannot be invoked after sharedClient() is added, it helps to make the completion arguments optional (as in STPToken? and NSError?).

Answer 3

As mentioned by Christine, the method now uses Optionals so it looks like the following:
STPAPIClient.sharedClient().createTokenWithCard(card, completion: { (token: STPToken?, error: NSError?) -> Void in
})

Answer 4

For objective-c using latest stripe pod
#import "Stripe.h"
STPCardParams *cardParams = [[STPCardParams alloc] init];
cardParams.number = #"4242424242424242";
cardParams.expMonth = 10;
cardParams.expYear = 2018;
cardParams.cvc = #"123";
[[STPAPIClient sharedClient] createTokenWithCard:cardParams completion:^(STPToken *token, NSError *error) {
if (token == nil || error != nil) {
// Present error to user...
NSLog(#"%#",error.description);
return;
}
NSLog(#"token.tokenId :: %#",token.tokenId);
}];