How Do I Display The Description Of An In-App Purchase Item? - ios

Question

I have a MasterViewController that shows a list of In-App Purchases in a table view. Whenever the table view cell is clicked, it presents my DetailViewController but it doesn't present the localized detail description for that In-App Purchase item. Is there a way so that depending on which IAP item was pressed in the tableview cell, it will present that IAP item's description in the DVC?
Here is my MVC.m:
#import "MasterViewController.h"
#import "DetailViewController.h"
#import "RageIAPHelper.h"
#import <StoreKit/StoreKit.h>
#interface MasterViewController () {
NSArray *_products;
NSNumberFormatter * _priceFormatter;
}
#end
#implementation MasterViewController
- (void)viewDidLoad
{
[super viewDidLoad];
UIBarButtonItem *backButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"" style:UIBarButtonItemStylePlain target:nil action:nil];
[self.navigationItem setBackBarButtonItem:backButtonItem];
self.title = #"Settings";
self.refreshControl = [[UIRefreshControl alloc] init];
[self.refreshControl addTarget:self action:#selector(reload) forControlEvents:UIControlEventValueChanged];
[self reload];
[self.refreshControl beginRefreshing];
_priceFormatter = [[NSNumberFormatter alloc] init];
[_priceFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
[_priceFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Restore" style:UIBarButtonItemStylePlain target:self action:#selector(restoreTapped:)];
}
- (void)restoreTapped:(id)sender {
[[RageIAPHelper sharedInstance] restoreCompletedTransactions];
}
- (void)viewWillAppear:(BOOL)animated {
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(productPurchased:) name:IAPHelperProductPurchasedNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animated {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)productPurchased:(NSNotification *)notification {
NSString * productIdentifier = notification.object;
[_products enumerateObjectsUsingBlock:^(SKProduct * product, NSUInteger idx, BOOL *stop) {
if ([product.productIdentifier isEqualToString:productIdentifier]) {
[self.tableView reloadRowsAtIndexPaths:#[[NSIndexPath indexPathForRow:idx inSection:0]] withRowAnimation:UITableViewRowAnimationFade];
*stop = YES;
}
}];
}
- (void)reload {
_products = nil;
[self.tableView reloadData];
[[RageIAPHelper sharedInstance] requestProductsWithCompletionHandler:^(BOOL success, NSArray *products) {
if (success) {
_products = products;
[self.tableView reloadData];
}
[self.refreshControl endRefreshing];
}];
}
#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 = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
SKProduct * product = (SKProduct *) _products[indexPath.row];
cell.textLabel.text = product.localizedTitle;
[_priceFormatter setLocale:product.priceLocale];
cell.detailTextLabel.text = [_priceFormatter stringFromNumber:product.price];
if ([[RageIAPHelper sharedInstance] productPurchased:product.productIdentifier]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
cell.accessoryView = nil;
} else {
UIButton *buyButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
buyButton.frame = CGRectMake(0, 0, 72, 37);
[buyButton setTitle:#"Buy" forState:UIControlStateNormal];
buyButton.tag = indexPath.row;
[buyButton addTarget:self action:#selector(buyButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.accessoryType = UITableViewCellAccessoryNone;
cell.accessoryView = buyButton;
}
return cell;
}
- (void)buyButtonTapped:(id)sender {
UIButton *buyButton = (UIButton *)sender;
SKProduct *product = _products[buyButton.tag];
NSLog(#"Buying %#...", product.productIdentifier);
[[RageIAPHelper sharedInstance] buyProduct:product];
}
#end
And here is my DetailViewController.h:
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController
#property (strong, nonatomic) id detailItem;
#property (weak, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
#end
And my DetailViewController.m:
#import "DetailViewController.h"
#interface DetailViewController ()
- (void)configureView;
#end
#implementation DetailViewController
#pragma mark - Managing the detail item
- (void)setDetailItem:(id)newDetailItem
{
if (_detailItem != newDetailItem) {
_detailItem = newDetailItem;
// Update the view.
[self configureView];
}
}
- (void)configureView
{
// Update the user interface for the detail item.
if (self.detailItem) {
self.detailDescriptionLabel.text = [self.detailItem description];
_detailDescriptionLabel.text = #"Please enable in app purchase in your settings";
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self configureView];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end

Answer 1

You should add this method your MasterVC.m
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
DetailViewController *dest = [segue destinationViewController];
UITableViewCell *cell = (UITableViewCell*)sender;
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
SKProduct *product = (SKProduct *) _products[indexPath.row];
dest.detailText = product.localizedDescription;
}
In DetailVC.h add:
#property (nonatomic, readwrite) NSString *detailText;
In DetailVC.m add:
- (void)viewWillAppear:(BOOL)animated {
self.detailDescriptionLabel.text = detailText;
}
Make sure you import your DetailViewController.h at the top of your MasterVC.m file.