小编dal*_*ijn的帖子

从iOS7 Apple弃用了SKPaymentTransaction实例的transactionReceipt属性,现在我们有一个包含所有内容的大收据.在我的应用程序中,我有几个消耗品购买.我的代码:

#pragma mark -
#pragma mark SKPaymentTransactionObserver

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray<SKPaymentTransaction *> *)transactions {

    for (SKPaymentTransaction *transaction in transactions) {

        switch (transaction.transactionState) {

            case SKPaymentTransactionStatePurchased:
                [self completeTransaction:transaction];
                break;

           ...
    }

}

- (void)completeTransaction:(SKPaymentTransaction *)transaction {
//    [self sendRecieptToServer:transaction.transactionReceipt]; // deprecated
    [self testMainReceipt];
    [self deliverPurchaseNotificationFirIdentifier:transaction.payment.productIdentifier];
    [SKPaymentQueue.defaultQueue finishTransaction:transaction];
}

- (void)testMainReceipt {
    NSURL *receiptURL = [[NSBundle mainBundle] appStoreReceiptURL];
    NSData *receipt = [NSData dataWithContentsOfURL:receiptURL];

    [self sendRecieptToServer:receipt]; //look at the 'status' field and determine whether a good purchase or not
}

从Apple的回复中我看到'in_app'提交了一个数组,其中包含一个项目 - …

我有TableView自定义类型的细胞.原型cell我有3个按钮.我希望能够在按下另一个时更改按钮标题.我试着这个:

- (IBAction) doSomething:(id) sender { 

    CGPoint hitPoint = [sender convertPoint:CGPointZero toView:self.myTableView]; 
    NSIndexPath *hitIndex = [self.myTableView indexPathForRowAtPoint:hitPoint];

    NSLog(@"%ld", (long)hitIndex.row); //This works and I can see the row which button placed
    MyCustomViewCell *cell = [_myTableView dequeueReusableCellWithidentifier:@"myCell"];

    //I'm tried this:
    cell.button.titleLabel.text = @"111";

    //and I'm tried this:
    [cell.button setTitle:@"222" forState:UIControlStateNormal];

}

我做错了什么？

-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath(NSIndexPath *)indexPath {

     MyCustomViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"myCell"];

    if (!cell) {
        cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"myCell"];
        cell.accessoryType= UITableViewCellAccessoryDisclosureIndicator;
    }

      cell.textLabel.text = _productNameForClearance;
      cell.imageView.image …

我正在尝试获取当前季度的第一个和最后一个日期,我正在使用它:

NSDateComponents *components = [[NSCalendar currentCalendar] components:NSCalendarUnitQuarter | NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear fromDate:[NSDate date]];

components.quarter = 1;

funStartDate = [[NSCalendar currentCalendar] dateFromComponents: components];
NSLog(@"First day of quater: %@", funStartDate);

[components setQuarter:[components quarter]+1];

funEndDate = [[NSCalendar currentCalendar] dateFromComponents: components];
NSLog(@"Last day of quater: %@", [funEndDate descriptionWithLocale:[NSLocale currentLocale]]);

但在两个控制台打印中,我看到了今天的日期.我做错了什么？

我有2个实体:目标和类别.我向目标实体添加了关系"类别".我希望该用户可以从列表中选择一个类别,然后将该类别添加为与Goal对象的关系.但我收到错误:-[__NSSingleObjectSetI managedObjectContext]: unrecognized selector sent to instance 0x138a22fa0

我的代码:

- (BOOL)save {

    // Get Category object
    NSManagedObject *objCategory = [self getCategoryObjectWithID:@"1"];
    if (!objCategory) {
        NSLog(@"ERROR objCategory fetching!");
        return;
    }

 NSEntityDescription *entity =  [NSEntityDescription entityForName:@"Goal"
                                               inManagedObjectContext:[CoreDataWrapper myManagedContext]];

    NSManagedObject *goal = [[NSManagedObject alloc] initWithEntity:entity insertIntoManagedObjectContext:[CoreDataWrapper myManagedContext]];
    [goal setValue:strID forKey:@"id"];
    [goal setValue:[NSSet setWithObject:objCategory] forKey:@"category"]; // here error

return [CoreDataWrapper saveMyContext];

}

- (NSManagedObject *)getCategoryObjectWithID:(NSString *)catID {

    // Fetching
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] initWithEntityName:@"Category"];
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"%K == %@", @"categoryID", …

我有动态tableView与自定义单元格.CustomCell .h文件如下所示:

@property (strong, nonatomic) IBOutlet UILabel *uslugaName;  //I set retain doesn't work too
@property (strong, nonatomic) IBOutlet UILabel *howMuchPayLbl;

我的CellForRowAtIndexPathMethod:

-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

  static NSString * cellIdentifier = @"Cell";

    myCustomCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];


     /*
    if (!cell)
        cell = [[myCustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    */

    if (indexPath.row !=15) {

    cell.uslugaName.text =serviceNameArr[indexPath.row];

    //?????????? ?????? ? ??????????? ?? ?????????? ??????
    if ([uslugaIsActiveArr[indexPath.row]  isEqual: @"1"]) {
        cell.backgroundColor = [UIColor blackColor];
        cell.howMuchPayLbl.enabled = YES;
    }
    else {
        cell.backgroundColor = [UIColor …

是的,我知道这个问题在这里非常受欢迎,并且已经为这个问题提供了很多答案,是的,我在这里在视图控制器之间传递数据.但是我很长时间都做不到.

在ViewControllerB.h中我为BOOL创建了一个属性

@property(nonatomic) BOOL *someBool;

ViewControllerA.m:

#import "ViewControllerB.h"

ViewControllerB *viewControllerB = [[ViewControllerB alloc] init];
viewControllerB.someBool = YES;
[self.navigationController pushViewController:viewControllerB  animated:YES];

在ViewControllerB.m中ViewDidLoad:

NSLog(@"%@", self.someBool);

但xCode在这一行给我错误(NSLog(@"%@",self.someBool);)并说:Thread 1:EXC_BAD_ACCESS (code =2).我究竟做错了什么？