我已将In App Purchasing编入我的应用程序并使其正常工作，以便用户可以通过按下按钮进行购买。
我现在想要为用户创建一个能够恢复购买的按钮。我在'UpgradeViewController'中使用共享实例从'IAHelper.h'检索方法，所以我已经显示了两段代码，这有助于
如何在In App Purchase中添加“Restore Purchase”方法？
IAHelper.m
#import "IAPHelper.h"
// Add to top of file
NSString *const IAPHelperProductPurchasedNotification = @"IAPHelperProductPurchasedNotification";
@implementation IAPHelper
{
// 3
SKProductsRequest * _productsRequest;
// 4
RequestProductsCompletionHandler _completionHandler;
NSSet * _productIdentifiers;
NSMutableSet * _purchasedProductIdentifiers;
NSArray *_products;
}
- (id)initWithProductIdentifiers:(NSSet *)productIdentifiers {
if ((self = [super init])) {
// Store product identifiers
_productIdentifiers = productIdentifiers;
// Check for previously purchased products
_purchasedProductIdentifiers = [NSMutableSet set];
for (NSString * productIdentifier in _productIdentifiers) {
BOOL productPurchased = [[NSUserDefaults standardUserDefaults] boolForKey:productIdentifier];
if (productPurchased) {
[_purchasedProductIdentifiers addObject:productIdentifier];
NSLog(@"Previously purchased: %@", productIdentifier);
} else {
NSLog(@"Not purchased: %@", productIdentifier);
}
}
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
}
return self;
}
- (void)requestProductsWithCompletionHandler:(RequestProductsCompletionHandler)completionHandler {
// 1
_completionHandler = [completionHandler copy];
// 2
_productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:_productIdentifiers];
_productsRequest.delegate = self;
[_productsRequest start];
}
#pragma mark - SKProductsRequestDelegate
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
NSLog(@"Loaded list of products... %@", response.products);
_productsRequest = nil;
NSArray * skProducts = response.products;
for (SKProduct * skProduct in skProducts) {
NSLog(@"Found product: %@ %@ %0.2f",
skProduct.productIdentifier,
skProduct.localizedTitle,
skProduct.price.floatValue);
}
_completionHandler(YES, skProducts);
_completionHandler = nil;
}
- (void)request:(SKRequest *)request didFailWithError:(NSError *)error {
NSLog(@"Failed to load list of products.");
_productsRequest = nil;
_completionHandler(NO, nil);
_completionHandler = nil;
}
- (BOOL)productPurchased:(NSString *)productIdentifier {
return [_purchasedProductIdentifiers containsObject:productIdentifier];
}
- (void)buyProduct:(SKProduct *)product {
NSLog(@"Buying %@...", product.productIdentifier);
SKPayment * payment = [SKPayment paymentWithProduct:product];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
for (SKPaymentTransaction * transaction in transactions) {
switch (transaction.transactionState)
{
case SKPaymentTransactionStatePurchased:
[self completeTransaction:transaction];
break;
case SKPaymentTransactionStateFailed:
[self failedTransaction:transaction];
break;
case SKPaymentTransactionStateRestored:
[self restoreTransaction:transaction];
default:
break;
}
};
}
- (void)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"completeTransaction...");
[self provideContentForProductIdentifier:transaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
- (void)restoreTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"restoreTransaction...");
[self provideContentForProductIdentifier:transaction.originalTransaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
- (void)failedTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"failedTransaction...");
if (transaction.error.code != SKErrorPaymentCancelled)
{
NSLog(@"Transaction error: %@", transaction.error.localizedDescription);
}
[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
// Add new method
- (void)provideContentForProductIdentifier:(NSString *)productIdentifier {
[_purchasedProductIdentifiers addObject:productIdentifier];
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:productIdentifier];
[[NSUserDefaults standardUserDefaults] synchronize];
[[NSNotificationCenter defaultCenter] postNotificationName:IAPHelperProductPurchasedNotification object:productIdentifier userInfo:nil];
}
- (NSArray*)getProductArrray {
return _products;
}
@end
UpgradeViewController
#import "UpgradeViewController.h"
#import "ECSlidingViewController.h"
#import "MenuViewController.h"
#import "RageIAPHelper.h"
#import <StoreKit/StoreKit.h>
@interface UpgradeViewController ()
{
NSMutableArray *_objects;
NSArray *_products;
NSNumberFormatter * _priceFormatter;
}
@property (retain, nonatomic) IBOutlet JSAnimatedImagesView *animatedImagesView;
@property (assign, nonatomic) IBOutlet UIButton *installFullAppButton;
@end
@implementation UpgradeViewController
@synthesize menuBtn, animatedImagesView = _animatedImagesView, scrolly, bannerView, labelPrice;
- (void)awakeFromNib
{
[super awakeFromNib];
}
- (NSString *)publisherIdForAdSdkBannerView:(AdSdkBannerView *)banner {
return @"e0616d4190bff65279ed5c20de1b5653";
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[RageIAPHelper sharedInstance];
_products = nil;
[[RageIAPHelper sharedInstance] requestProductsWithCompletionHandler:^(BOOL success, NSArray *products) {
if (success) {
_products = products;
}
}];
// Price New
SKProduct * product = (SKProduct *) [_products objectAtIndex:0];
([[RageIAPHelper sharedInstance] productPurchased:product.productIdentifier]);
// Unlock your features code comes here
UIButton *buyButton = [[UIButton alloc] initWithFrame:CGRectMake(-1, 370, 320, 60)];
UIImage *btnImage = [UIImage imageNamed:@"upgrade-new.png"];
[buyButton setImage:btnImage forState:UIControlStateNormal];
[buyButton.titleLabel setFont:[UIFont boldSystemFontOfSize:13.0]];
[buyButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[buyButton.titleLabel setShadowColor:[UIColor colorWithWhite:0.1 alpha:1.0]];
[buyButton.titleLabel setShadowOffset:CGSizeMake(0, -1)];
[buyButton addTarget:self action:@selector(buyButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
buyButton.tag = 0;
[[self view] addSubview:buyButton];
// Purchase Action End
[super viewDidLoad];
_priceFormatter = [[NSNumberFormatter alloc] init];
[_priceFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
[_priceFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];
[_priceFormatter setLocale:product.priceLocale];
labelPrice.text = [_priceFormatter stringFromNumber:product.price];
self.view.layer.shadowOpacity = 0.75f;
self.view.layer.shadowRadius = 10.0f;
self.view.layer.shadowColor = [UIColor blackColor].CGColor;
if (![self.slidingViewController.underLeftViewController isKindOfClass:[MenuViewController class]]) {
self.slidingViewController.underLeftViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"Menu"];
}
[self.view addGestureRecognizer:self.slidingViewController.panGesture];
self.menuBtn = [UIButton buttonWithType:UIButtonTypeCustom];
menuBtn.frame = CGRectMake(8, 30, 34, 24);
[menuBtn setBackgroundImage:[UIImage imageNamed:@"menuButton.png"] forState:UIControlStateNormal];
[menuBtn addTarget:self action:@selector(revealMenu:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.menuBtn];
myWebView.opaque = NO;
myWebView.backgroundColor = [UIColor clearColor];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)revealMenu:(id)sender
{
[self.slidingViewController anchorTopViewTo:ECRight];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
self.screenName = @"Upgrade";
}
#pragma mark - UI
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
return (toInterfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (void)buyButtonTapped:(id)sender {
UIButton *buyButton = (UIButton *)sender;
SKProduct *product = [_products objectAtIndex:buyButton.tag];
NSLog(@"Buying %@...", product.productIdentifier);
[[RageIAPHelper sharedInstance] buyProduct:product];
}
@end
答案 0 :(得分：1)
如果你把它添加到你的助手那么任何方式;
- (void)restoreCompletedTransactions
{
[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}
从VC这样打电话;
- (IBAction)restoreAction:(id)sender
{
[[RageIAPHelper sharedInstance] restoreCompletedTransactions];
}
答案 1 :(得分：0)
完成此操作后;
- (void)restoreCompletedTransactions
{
[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}
从VC这样打电话;
- (IBAction)restoreAction:(id)sender
{
[[RageIAPHelper sharedInstance] restoreCompletedTransactions];
}
此方法需要更改为此;
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
NSLog(@"Loaded list of products... %@", response.products);
_productsRequest = nil;
NSArray * skProducts = response.products;
for (SKProduct * skProduct in skProducts) {
NSLog(@"Found product: %@ %@ %0.2f",
skProduct.productIdentifier,
skProduct.localizedTitle,
skProduct.price.floatValue);
}
// Check is the Handler exists
if(_completionHandler)
{
_completionHandler(YES, skProducts);
}
_completionHandler = nil;
}