无涯教程-OC - 应用内购买

应用内购买用于购买应用程序的其他内容或升级功能。

涉及步骤

步骤1 - 在iTunes connect中，确保您具有唯一的应用ID ，并且当无涯教程使用捆绑程序ID 和代码签名创建应用程序更新时在Xcode中具有相应的配置文件。

步骤2 - 创建一个新的应用程序并更新应用程序信息，您可以在Apple的添加新应用文档中了解更多信息。

步骤3 - 在应用程序页面的管理应用内购买中添加新产品供应用内购买。

步骤4 - 确保为您的应用设置银行详细信息，必须进行设置才能使应用内购买正常工作。另外，使用应用程序的iTunes连接页面中的管理用户选项创建一个测试用户帐户。

步骤5 - 下一步与处理代码和为无涯教程的应用内购买创建用户界面有关。

步骤6 - 创建一个单视图应用程序，并输入捆绑包标识符，该标识符是iTunes connect中指定的标识符。

步骤7 - 如下所示更新 ViewController.xib -

步骤8 - 为这三个标签和按钮分别创建 IBOutlets ，分别将其命名为productTitleLabel，product描述Label，productPriceLabel和purchaseButton。

步骤9 - 选择您的项目文件，然后选择目标 ，然后添加 StoreKit.framework 。

步骤10 - 如下更新 ViewController.h -

#import <UIKit/UIKit.h>
#import <StoreKit/StoreKit.h>

@interface ViewController : UIViewController<
SKProductsRequestDelegate，SKPaymentTransactionObserver> {
   SKProductsRequest *productsRequest;
   NSArray *validProducts;
   UIActivityIndicatorView *activityIndicatorView;
   IBOutlet UILabel *productTitleLabel;
   IBOutlet UILabel *productRemarkLabel;
   IBOutlet UILabel *productPriceLabel;
   IBOutlet UIButton *purchaseButton;
}

- (void)fetchAvailableProducts;
- (BOOL)canMakePurchases;
- (void)purchaseMyProduct:(SKProduct*)product;
- (IBAction)purchase:(id)sender;

@end

步骤11 - 如下更新 ViewController.m -

#import "ViewController.h"
#define kTutorialPointProductID 
@"com.tutorialPoints.testApp.testProduct"

@interface ViewController ()
@end

@implementation ViewController

- (void)viewDidLoad {
   [super viewDidLoad];
   
   //添加活动指示器
   activityIndicatorView = [[UIActivityIndicatorView alloc]
   initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
   activityIndicatorView.center = self.view.center;
   [activityIndicatorView hidesWhenStopped];
   [self.view addSubview:activityIndicatorView];
   [activityIndicatorView startAnimating];
   
   //最初隐藏购买按钮
   purchaseButton.hidden = YES;
   [self fetchAvailableProducts];
}

- (void)didReceiveMemoryWarning {
   [super didReceiveMemoryWarning];
   //Dispose of any resources that can be recreated.
}

-(void)fetchAvailableProducts {
   NSSet *productIdentifiers = [NSSet 
   setWithObjects:kTutorialPointProductID，nil];
   productsRequest = [[SKProductsRequest alloc] 
   initWithProductIdentifiers:productIdentifiers];
   productsRequest.delegate = self;
   [productsRequest start];
}

- (BOOL)canMakePurchases {
   return [SKPaymentQueue canMakePayments];
}

- (void)purchaseMyProduct:(SKProduct*)product {
   if ([self canMakePurchases]) {
      SKPayment *payment = [SKPayment paymentWithProduct:product];
      [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
      [[SKPaymentQueue defaultQueue] addPayment:payment];
   } else {
      UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:
      @"Purchases are disabled in your device" message:nil delegate:
      self cancelButtonTitle:@"Ok" otherButtonTitles: nil];
      [alertView show];
   }
}
-(IBAction)purchase:(id)sender {
   [self purchaseMyProduct:[validProducts objectAtIndex:0]];
   purchaseButton.enabled = NO; 
}

#pragma mark StoreKit Delegate

-(void)paymentQueue:(SKPaymentQueue *)queue 
updatedTransactions:(NSArray *)transactions {
   for (SKPaymentTransaction *transaction in transactions) {
      switch (transaction.transactionState) {
         case SKPaymentTransactionStatePurchasing:
            NSLog(@"Purchasing");
         break;
         
         case SKPaymentTransactionStatePurchased:
            if ([transaction.payment.productIdentifier 
            isEqualToString:kTutorialPointProductID]) {
               NSLog(@"Purchased ");
               UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:
               @"Purchase is completed succesfully" message:nil delegate:
               self cancelButtonTitle:@"Ok" otherButtonTitles: nil];
               [alertView show];
            }
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
         break;
            
         case SKPaymentTransactionStateRestored:
            NSLog(@"Restored ");
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
         break;
            
         case SKPaymentTransactionStateFailed:
            NSLog(@"Purchase failed ");
         break
         default:
         break;
      }
   }
}

-(void)productsRequest:(SKProductsRequest *)request 
didReceiveResponse:(SKProductsResponse *)response {
   SKProduct *validProduct = nil;
   int count = [response.products count];
   
   if (count>0) {
      validProducts = response.products;
      validProduct = [response.products objectAtIndex:0];
      
      if ([validProduct.productIdentifier 
         isEqualToString:kTutorialPointProductID]) {
         [productTitleLabel setText:[NSString stringWithFormat:
            @"Product Title: %@"，validProduct.localizedTitle]];
         [productRemarkLabel setText:[NSString stringWithFormat:
            @"Product Desc: %@"，validProduct.localizedRemark]];
         [productPriceLabel setText:[NSString stringWithFormat:
            @"Product Price: %@"，validProduct.price]];
      }
   } else {
      UIAlertView *tmp = [[UIAlertView alloc]
         initWithTitle:@"Not Available"
         message:@"No products to purchase"
         delegate:self
         cancelButtonTitle:nil
         otherButtonTitles:@"Ok"， nil];
         [tmp show];
   }
   
   [activityIndicatorView stopAnimating];
   purchaseButton.hidden = NO;
}
@end

您必须将kTutorialPointProductID更新为为应用内购买创建的productID。您可以通过更新fetchAvailableProducts中的productIdentifiers的NSSet添加多个产品。类似地，为您添加的产品ID处理与购买相关的操作。

运行应用程序时，将获得以下输出-

确保您已在设置屏幕中退出帐户。单击"InitiatePurchase"后，选择"使用现有Apple ID"。输入有效的测试帐户用户名和密码。您将收到以下提示。

成功购买产品后，您将收到以下提示。在显示此提示的地方，您可以看到用于更新应用程序功能的相关代码。

参考链接

https://www.learnfk.com/ios/ios-in-app-purchase.html