ios - 购买应用内购买后保存更改
<p>我在我的应用程序中有一个应用程序内购买用于删除广告横幅，当我成功购买并返回到我的主 ViewController 时，广告没有删除但是当我退出应用程序并重新打开它时，广告消失了并保持消失。几乎就像它记得我在下一次加载时购买了删除广告 IAP，但不是在购买后立即购买。一个非常聪明的人告诉我我需要这样做:<br><br> <blockquote>
<p>So now all you have to do is call the code that is located in the
viewWillAppear / viewDidLoad methods once you return to your VC after
purchasing the IAP. How you do that is up to you. If you need help
with that I would suggest asking a new question since this comment
thread is getting very long. I'd appreciate if you upvote my answer
and choose it as the correct answer since I've helped you get this
working.</p>
</blockquote><br><br>关于如何做到这一点的任何想法？<br><br>谢谢!<br><br>这是我的主 ViewController 的屏幕截图:<br><br> ViewController .h<br><pre><code>#import <UIKit/UIKit.h>
#import <StoreKit/StoreKit.h>
#import <CoreMotion/CoreMotion.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
@interface ViewController : UIViewController <UIWebViewDelegate, MKMapViewDelegate, CLLocationManagerDelegate>
@property (strong, nonatomic) IBOutlet UIWebView *viewWeb;
@property (nonatomic, strong) CLLocationManager *locationManager;
@property (nonatomic, strong) CLLocation *currentLocation;
@property (weak, nonatomic) IBOutlet UIImageView *PokeABowlAd;
@end
</code></pre><br> ViewController .m:<br><pre><code>#define SHOW_ADS_KEY @"Show Ads Key"
#define k_Save @"Saveitem"
#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>
@interface ViewController () <UITextViewDelegate>
@end
@implementation ViewController
@synthesize viewWeb;
- (void)viewDidLoad {
;
UIBarButtonItem *backButtonItem = [ initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
;
NSString *fullURL = @"https://www.google.com";
NSURL *url = ;
NSURLRequest *requestObj = ;
viewWeb.scalesPageToFit = YES;
viewWeb.scrollView.bounces = NO;
;
}
#pragma mark - CLLocationManagerDelegate
// Wait for location callbacks
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
NSLog(@"%@", );
}
-(void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event {
if (event.type == UIEventSubtypeMotionShake) {
NSString *jsString = URLForResource:@"iitc" withExtension:@"js"] encoding:NSUTF8StringEncoding error:nil];
;
}
}
- (NSUInteger)supportedInterfaceOrientations {
if ([ userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return UIInterfaceOrientationMaskAllButUpsideDown;
} else {
return UIInterfaceOrientationMaskAll;
}
}
- (IBAction)PokeABowlAd:(id)sender {
if (![[ objectForKey:SHOW_ADS_KEY]isEqualToString: @"No"]){ // NEW CODE
// Code to show ads
_PokeABowlAd.hidden = NO;
[ openURL:];
} else {
_PokeABowlAd.hidden = YES;
}
NSLog(@"Shows ads?: %@", [ objectForKey:SHOW_ADS_KEY]);
}
- (void)viewWillAppear {
if (![[ objectForKey:SHOW_ADS_KEY] isEqualToString: @"No"]){ // NEW CODE
// Code to show ads
_PokeABowlAd.hidden = NO;
} else {
_PokeABowlAd.hidden = YES;
}
NSLog(@"Shows ads?: %@", [ objectForKey:SHOW_ADS_KEY]);
}
@end
</code></pre><br>MasterViewController.m:<br><pre><code> #import "MasterViewController.h"
#import "DetailViewController.h"
#import "RageIAPHelper.h"
#import <StoreKit/StoreKit.h>
@interface MasterViewController () {
NSArray *_products;
NSNumberFormatter * _priceFormatter;
}
@end
@implementation MasterViewController
- (void)viewDidLoad
{
;
UIBarButtonItem *backButtonItem = [ initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
;
self.title = @"Settings";
self.refreshControl = [ init];
;
;
;
_priceFormatter = [ init];
;
;
self.navigationItem.rightBarButtonItem = [ initWithTitle:@"Restore" style:UIBarButtonItemStylePlain target:self action:@selector(restoreTapped:)];
}
- (void)restoreTapped:(id)sender {
[ restoreCompletedTransactions];
}
- (void)viewWillAppear:(BOOL)animated {
[ addObserver:self selector:@selector(productPurchased:) name:IAPHelperProductPurchasedNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animated {
[ removeObserver:self];
}
- (void)productPurchased:(NSNotification *)notification {
NSString * productIdentifier = notification.object;
[_products enumerateObjectsUsingBlock:^(SKProduct * product, NSUInteger idx, BOOL *stop) {
if () {
] withRowAnimation:UITableViewRowAnimationFade];
*stop = YES;
}
}];
}
- (void)reload {
_products = nil;
;
[ requestProductsWithCompletionHandler:^(BOOL success, NSArray *products) {
if (success) {
_products = products;
;
}
;
}];
}
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return _products.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = ;
SKProduct * product = (SKProduct *) _products;
cell.textLabel.text = product.localizedTitle;
;
cell.detailTextLabel.text = ;
if ([ productPurchased:product.productIdentifier]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
cell.accessoryView = nil;
} else {
UIButton *buyButton = ;
buyButton.frame = CGRectMake(0, 0, 72, 37);
;
buyButton.tag = indexPath.row;
;
cell.accessoryType = UITableViewCellAccessoryNone;
cell.accessoryView = buyButton;
}
return cell;
}
- (void)buyButtonTapped:(id)sender {
UIButton *buyButton = (UIButton *)sender;
SKProduct *product = _products;
NSLog(@"Buying %@...", product.productIdentifier);
[ buyProduct:product];
}
@end
</code></pre><br>IAPHelper.h:<br><pre><code> #import <StoreKit/StoreKit.h>
UIKIT_EXTERN NSString *const IAPHelperProductPurchasedNotification;
typedef void (^RequestProductsCompletionHandler)(BOOL success, NSArray * products);
@interface IAPHelper : NSObject
- (id)initWithProductIdentifiers:(NSSet *)productIdentifiers;
- (void)requestProductsWithCompletionHandler:(RequestProductsCompletionHandler)completionHandler;
- (void)buyProduct:(SKProduct *)product;
- (BOOL)productPurchased:(NSString *)productIdentifier;
- (void)restoreCompletedTransactions;
@property (weak, nonatomic) IBOutlet UIImageView *PokeABowlAd;
@end
</code></pre><br>IAPHelper.m:<br><pre><code> #define SHOW_ADS_KEY @"Show Ads Key"
// 1
#import "IAPHelper.h"
#import <StoreKit/StoreKit.h>
NSString *const IAPHelperProductPurchasedNotification = @"IAPHelperProductPurchasedNotification";
// 2
@interface IAPHelper () <SKProductsRequestDelegate, SKPaymentTransactionObserver>
@end
// 3
@implementation IAPHelper {
SKProductsRequest * _productsRequest;
RequestProductsCompletionHandler _completionHandler;
NSSet * _productIdentifiers;
NSMutableSet * _purchasedProductIdentifiers;
}
- (id)initWithProductIdentifiers:(NSSet *)productIdentifiers {
if ((self = )) {
// Store product identifiers
_productIdentifiers = productIdentifiers;
// Check for previously purchased products
_purchasedProductIdentifiers = ;
for (NSString * productIdentifier in _productIdentifiers) {
BOOL productPurchased = [ boolForKey:productIdentifier];
if (productPurchased) {
;
NSLog(@"Previously purchased: %@", productIdentifier);
// NEW CODE
if (){
[ setObject: @"No" forKey:SHOW_ADS_KEY];
[ synchronize];
}
// NEW CODE ^^
} else {
NSLog(@"Not purchased: %@", productIdentifier);
}
}
// Add self as transaction observer
[ addTransactionObserver:self];
}
return self;
}
- (void)requestProductsWithCompletionHandler:(RequestProductsCompletionHandler)completionHandler {
// 1
_completionHandler = ;
// 2
_productsRequest = [ initWithProductIdentifiers:_productIdentifiers];
_productsRequest.delegate = self;
;
}
- (BOOL)productPurchased:(NSString *)productIdentifier {
return ;
}
- (void)buyProduct:(SKProduct *)product {
NSLog(@"Buying %@...", product.productIdentifier);
SKPayment * payment = ;
[ addPayment:payment];
}
#pragma mark - SKProductsRequestDelegate
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
NSLog(@"Loaded list of 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;
}
#pragma mark SKPaymentTransactionOBserver
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
for (SKPaymentTransaction * transaction in transactions) {
switch (transaction.transactionState)
{
case SKPaymentTransactionStatePurchased:
;
break;
case SKPaymentTransactionStateFailed:
;
break;
case SKPaymentTransactionStateRestored:
;
default:
break;
}
};
}
- (void)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"completeTransaction...");
;
[ finishTransaction:transaction];
}
- (void)restoreTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"restoreTransaction...");
;
[ finishTransaction:transaction];
}
- (void)failedTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"failedTransaction...");
if (transaction.error.code != SKErrorPaymentCancelled)
{
NSLog(@"Transaction error: %@", transaction.error.localizedDescription);
}
[ finishTransaction: transaction];
}
- (void)provideContentForProductIdentifier:(NSString *)productIdentifier {
;
[ setBool:YES forKey:productIdentifier];
[ synchronize];
[ postNotificationName:IAPHelperProductPurchasedNotification object:productIdentifier userInfo:nil];
}
- (void)restoreCompletedTransactions {
[ restoreCompletedTransactions];
}
@end
</code></pre><br>RageIAPHelper.h<br><pre><code> #import "IAPHelper.h"
@interface RageIAPHelper : IAPHelper
+ (RageIAPHelper *)sharedInstance;
@end
</code></pre><br>RageIAPHelper.m<br><pre><code> #import "RageIAPHelper.h"
#import "ViewController.h"
@implementation RageIAPHelper
+ (RageIAPHelper *)sharedInstance {
static dispatch_once_t once;
static RageIAPHelper * sharedInstance;
dispatch_once(&once, ^{
NSSet * productIdentifiers = [NSSet setWithObjects:
@“com.GPS.iapra",
@"com.GPS.iapb”,
nil];
sharedInstance = [ initWithProductIdentifiers:productIdentifiers];
});
return sharedInstance;
}
@end
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p>所以我认为正在发生的事情是它直到<code>initWithProductIdentifers</code> 才识别您的购买。正在调用 IAP.m 中的方法(仅在加载应用程序时发生)。<br><br>所以在 IAP.m 中尝试修改:<br><pre><code>- (void)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"completeTransaction...");
;
[ finishTransaction:transaction];
}
</code></pre><br>到:<br><pre><code>- (void)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"completeTransaction...");
;
// NEW CODE
if (){
[ setObject: @"No" forKey:SHOW_ADS_KEY];
[ synchronize];
}
// NEW CODE ^^
[ finishTransaction:transaction];
}
</code></pre><br>另外，我认为您的 viewWillAppear 没有被调用的原因是因为您的 Storyboard中似乎有两个 NavigationController。尝试删除第二个(VC 和 MasterVC 之间的那个)。如果您同时执行这两项操作，则应该可以正常工作。</p>
<p style="font-size: 20px;">关于ios - 购买应用内购买后保存更改，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/31975790/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/31975790/
</a>
</p>
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