如何将paypal与iphone集成？

Question

我正在尝试将paypal与iphone集成我得到与移动支付库的.o文件相关的错误..想知道将paypal与iphone整合的完整程序。我正在尝试为paypal编码

- (void)viewDidLoad 
{
    [super viewDidLoad];
    [PayPal initializeWithAppID:@"APP-80W284485P519543T" forEnvironment:ENV_SANDBOX];
}


-(IBAction)payPal:(id)sender
{
    PayPal *payObject=[PayPal getInstance];
    PayPalPayment *obj=[[PayPalPayment alloc]init];
    obj.recipient=@"priyankasaroha@gmail.com";
    obj.paymentCurrency=@"USD";
    obj.description=@"Teddy Bear";
    obj.merchantName=@"Priyanka";
    obj.subTotal = [NSDecimalNumber decimalNumberWithString:@"10"];    
    [payObject checkoutWithPayment:obj];
}