iOS - 應用程式內購買

介紹

應用程式內購買用於購買額外內容或應用方面的升級功能。

涉及的步驟

1. 在iTunes連線，確保您擁有一個獨特的應用程式ID和相應的組態檔案綑綁ID和程式碼簽名在Xcode，當我們建立應用程式更新。

2. 建立一個新的應用和更新應用程式的資訊。可以了解這個蘋果新增新的應用程式文件。

3. 新增一個新的產品，在管理應用程式內購買在應用程式的頁面應用程式內購買。

4.確保您設定銀行為您的應用程式的詳細資訊。這需要應用程式內購買的設定工作。還可以建立一個測試使用者帳戶使用管理使用者“選項，應用程式在iTunes連線頁面。

5. 接下來的步驟是處理程式碼和建立使用者介面為我們的應用程式內購買。

6. 建立一個單獨檢視應用程式並進入包識別符號指定的識別符號在iTunes連線。

7. 更新 ViewController.xib 內容如下所示：

8. 建立三個IBOutlets 標籤的命名分別為productDescriptionLabel productTitleLabel，productPriceLabel 和 purchaseButton 按鈕。

9. 選擇專案檔案，然後選擇目標，然後新增StoreKit.framework。

10. 更新 ViewController.h 如下所示.

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

@interface ViewController : UIViewController<
SKProductsRequestDelegate,SKPaymentTransactionObserver>
{
    SKProductsRequest *productsRequest;
    NSArray *validProducts;
    UIActivityIndicatorView *activityIndicatorView;
    IBOutlet UILabel *productTitleLabel;
    IBOutlet UILabel *productDescriptionLabel;
    IBOutlet UILabel *productPriceLabel;
    IBOutlet UIButton *purchaseButton;
}
- (void)fetchAvailableProducts;
- (BOOL)canMakePurchases;
- (void)purchaseMyProduct:(SKProduct*)product;
- (IBAction)purchase:(id)sender;

@end

11. 更新ViewController.m 如下所示

#import "ViewController.h"
#define kTutorialYiibaiProductID 
@"com.tutorialYiibais.testApp.testProduct"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Adding activity indicator
    activityIndicatorView = [[UIActivityIndicatorView alloc]
    initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
    activityIndicatorView.center = self.view.center;
    [activityIndicatorView hidesWhenStopped];
    [self.view addSubview:activityIndicatorView];
    [activityIndicatorView startAnimating];
    //Hide purchase button initially
    purchaseButton.hidden = YES;
    [self fetchAvailableProducts];    
}

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

-(void)fetchAvailableProducts{
    NSSet *productIdentifiers = [NSSet 
    setWithObjects:kTutorialYiibaiProductID,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:kTutorialYiibaiProductID]) {
                   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:kTutorialYiibaiProductID]) {
            [productTitleLabel setText:[NSString stringWithFormat:
            @"Product Title: %@",validProduct.localizedTitle]];
            [productDescriptionLabel setText:[NSString stringWithFormat:
            @"Product Desc: %@",validProduct.localizedDescription]];
            [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

注意事項：

建立在應用程式內購買的ProductID更新kTutorialYiibaiProductID。可以新增一個以上的產品通過更新productIdentifiers的NSSet fetchAvailableProducts。同樣處理產品ID新增購買相關動作。

輸出

現在，當我們執行程式時，我們會得到下面的輸出。

請確定登入您的帳戶設定螢幕。在點選啟動購買請選擇“使用現有的Apple ID。輸入您的有效的測試帳戶的使用者名和密碼。在幾秒鐘內將顯示以下警告。

所購買的產品一旦成功，會得到以下警示。可以更新顯示此警報的應用程式功能的相關程式碼。