iPhone 编程中的应用内购买

Question

我在 App Purchases 中开发了一个应用程序。我有以下代码...在 ViewController.m 文件中，我调用了名为 InAppPurchases 的 butoon1Clicked 方法。实际上，当我第一次单击按钮时，我想执行应用内购买。如果事务成功，从下一次单击我想执行一些操作（例如，我给出了 NSLog 语句）当我单击交易成功后的按钮。请解释我必须在哪里写。或在任何过程中向我解释。我以为我想处理 BOOL 值，但我不知道我必须在哪里将 BOOL 值设置为是/否。请解释一下... MyStoreObserver.m 文件执行应用内购买交易。

ViewController.m

-(IBAction)button1Clicked:(id)sender
{       
     [self callInAppPurchase];
     NSLoG(@"Perform Some Action");
}
#pragma mark-In-AppPurchase code from here
-(void)callInAppPurchase
{
    if ([SKPaymentQueue canMakePayments])
    {
        // Display a store to the user.     
    }
}

AppDelegate.h

#import <UIKit/UIKit.h>
#import "MyStoreAbserver.h"
@interface iTeach_MathsAppDelegate : NSObject <UIApplicationDelegate> 
{
    BOOL isPurchased,isFailed;
}
@property (nonatomic, readwrite) BOOL isPurchased,isFailed;
@property (nonatomic, retain) IBOutlet UIWindow *window;

AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:     (NSDictionary *)launchOptions
{

      MyStoreAbserver *observer = [[MyStoreAbserver alloc] init];
       [[SKPaymentQueue defaultQueue] addTransactionObserver:observer];
      if([[[NSUserDefaults standardUserDefaults] objectForKey:@"isPurchased"] isEqualToString:@"true"])
       self.isPurchased = YES;
     else
       isPurchased = NO;
     isFailed = NO;

// Override point for customization after application launch.
[self.window makeKeyAndVisible];
return YES;
}

Answer 1

我认为you refer this link，并实现代码...这个链接对我有用...

购买产品时调用此函数：

 (void)productPurchased:(NSNotification *)notification