我陷入了奇怪的问题。用了几个小时。我有4个视图控制器的导航标签栏。问题是，第四个MiMaAdditionalController是tableview控制器。后者仅在第一次显示自己，具有正确构建的tableview，appstore项目等。当我点击任何以前的标签栏（视图控制器显示确定）并再次返回第4个选项卡时，桌面视图丢失，而标签栏标题有正确的“附加”标题...我用xib尝试了一切，手动创建了tableview等，但是问题所在，我不知道解决方案。这是应用程序启动和MiMaAdditionalController的代码。
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
glbMainViewController = [[MiMaMainController alloc] init];
glbAdditionalController = [[MiMaAdditionalController alloc]init];
glbSettingViewController = [[MiMaSettingsController alloc] init];
glbWebServicesListController = [[MiMaWebServicesList alloc] init];
glbTabBarController = [[UITabBarController alloc] init];
self.glbTabBarController.viewControllers = @[glbMainViewController, glbWebServicesListController, glbSettingViewController, glbAdditionalController];
//TabBar customization and initialization...
UITabBar *myTabBar = [glbTabBarController tabBar];
[myTabBar setBackgroundColor:[UIColor clearColor]];
glbRootNavController = [[UINavigationController alloc] initWithRootViewController:glbTabBarController];
self.window.rootViewController = glbRootNavController;
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor lightGrayColor];
[self.window makeKeyAndVisible];
return YES;
MiMaAdditionalController.h
@interface MiMaAdditionalController : UITableViewController
@property (strong, nonatomic) UIRefreshControl *refreshControl;
@property (nonatomic, strong) UIBarButtonItem *glbBarButtonRestore;
- (void)reload;
@end
MiMaAdditionalController.m
#import "MiMaAdditionalController.h"
@interface MiMaAdditionalController ()
{
NSSet *_listOfProducts;
NSArray *_appStoreProducts;
NSNumberFormatter *_priceFormatter;
}
@end
@implementation MiMaAdditionalController
@synthesize refreshControl, glbBarButtonRestore;
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
return (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) || (toInterfaceOrientation == UIInterfaceOrientationPortrait);
}
- (void) viewWillAppear:(BOOL)animated
{
self.tabBarController.title = NSLocalizedString(@"Additional", @"Additional");
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(productPurchased:) name:MiMaProductPurchasedNotification object:nil];
}
- (void) viewWillDisappear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void) productPurchased:(NSNotification *) notification
{
NSString *productIdentifier = notification.object;
[_appStoreProducts 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)viewDidLoad
{
[super viewDidLoad];
[self.navigationController setNavigationBarHidden:NO];
self.navigationController.navigationBar.translucent = NO;
self.edgesForExtendedLayout = UIRectEdgeNone;
self.refreshControl = [[UIRefreshControl alloc] init];
[self.refreshControl addTarget:self.tableView action:@selector(reload) forControlEvents:UIControlEventValueChanged];
[self reload];
[self.refreshControl beginRefreshing];
_priceFormatter = [[NSNumberFormatter alloc] init];
[_priceFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
[_priceFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];
NSString *restoreButtonText = NSLocalizedString(@"Restore purchase", "Restore purchase");
glbBarButtonRestore = [MiMaGlobal createToolBarButtonItemWithTitle:restoreButtonText withTarget:self
withAction:@selector(restoreTapped:)
withButtonWidth:0 withButtonHeight:0
withImageMouseUp:@"restore40x40" withImageMouseOver:@"restore40x40green" andShowTitle:NO];
[self.tabBarController.navigationItem setRightBarButtonItems:@[glbBarButtonRestore] animated:YES];
}
// Add new method
- (void)restoreTapped:(id)sender {
[[MiMa12frameInApp sharedInstance] restoreCompletedTransactions];
}
// 4
- (void)reload {
[[MiMa12frameInApp sharedInstance] requestProductsWithCompletionHandler:^(BOOL success,
NSArray *products) {
if (success) {
_appStoreProducts = products;
[self.tableView reloadData];
}
[self.refreshControl endRefreshing];
}];
}
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (section == 0) {
return [_appStoreProducts count];
} else
return 4;
}
- (NSInteger) numberOfSectionsInTableView:(UITableView *)tableView
{
return 2;
}
- (NSString *) tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
switch (section) {
case 0:
{
return NSLocalizedString(@"In-app purchase", "In-app purchase");
break;
}
case 1:
{
return NSLocalizedString(@"Additional actions", "Additional actions");
break;
}
default:
return @"";
break;
}
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdent = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdent];
if (cell ==nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdent];
}
if (indexPath.section == 0)
{
SKProduct *product = (SKProduct *) [_appStoreProducts objectAtIndex:[indexPath row]];
cell.textLabel.text = product.localizedTitle;
[_priceFormatter setLocale:product.priceLocale];
cell.detailTextLabel.text = [_priceFormatter stringFromNumber:product.price];
if ([[MiMa12frameInApp 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:NSLocalizedString(@"Buy", @"Buy") forState:UIControlStateNormal];
buyButton.tag = indexPath.row;
[buyButton addTarget:self action:@selector(buyButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.accessoryType = UITableViewCellAccessoryNone;
cell.accessoryView = buyButton;
}
} else if (indexPath.section == 1)
{
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellIdent];
}
if (indexPath.row == 0) {
cell.textLabel.text = NSLocalizedString(@"Tell a Friend", "");
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
} else if (indexPath.row == 1) {
cell.textLabel.text = NSLocalizedString(@"Gift This App", "");
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
} else if (indexPath.row == 2) {
cell.textLabel.text = NSLocalizedString(@"Rate in App Store", "");
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
} else if (indexPath.row == 3) {
cell.textLabel.text = NSLocalizedString(@"About this app", "");
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
}
return cell;
}
- (void) buyButtonTapped:(id) sender
{
UIButton *buyButton = (UIButton *) sender;
SKProduct *product = _appStoreProducts[buyButton.tag];
NSLog(NSLocalizedString(@"Buying %@...", @"Buying %@..."), product.productIdentifier);
[[MiMa12frameInApp sharedInstance] buyProduct:product];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 1) {
if (indexPath.row == 0) {
if ([[iTellAFriend sharedInstance] canTellAFriend]) {
UINavigationController* tellAFriendController = [[iTellAFriend sharedInstance] tellAFriendController];
[self presentViewController:tellAFriendController animated:YES completion:nil];
}
} else if (indexPath.row == 1) {
[[iTellAFriend sharedInstance] giftThisAppWithAlertView:YES];
} else if (indexPath.row == 2) {
[[iTellAFriend sharedInstance] rateThisAppWithAlertView:YES];
} else if (indexPath.row == 3) {
[self showAbout];
}
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}
}
- (void)showAbout
{
//TO DO...
NSLog(@"About");
}
@end
答案 0 :(得分：0)
经过漫长的旅程，我终于＆＃34;解决了＃34;问题。我放弃了现有的并创建了没有XIB的新UITableViewController。将相同的现有代码传输到新控制器后，一切都运行良好。这种长期头痛的真正原因是什么，我没有发现。