viewwillappear

I have a tableview in a tab bar application. I am loading the data in viewDidLoad managedObjectContext = nil; managedObjectContext = [(RecipesAppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext]; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"BrilliantMustache" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"badge.length > 0"]; [fetchRequest setPredicate:predicate]; NSSortDescriptor

tl;dr: Can I cause the detailTextLabel to have its size updated by the auto layout system in iOS on a value change? Has anyone else had issues with the detailText label within an UITableViewCell since iOS 8? I have a table which both text and detail strings. Initially detail text is an empty string (@""). After performing a storyboard segue to an edit screen, I return with a new value for the detail text and update it. I attempt to reload the table in viewWillAppear so that the value is present immediately upon returning to the previous view. Once the table view is visible again, the table

I'm trying to figure out from Apple's sketchy documentation which method is the best place to be initializing and adding my Views controls to the controller's view. With winforms it's fairly straightforward, as they're always initialized inside InitializeDesigner , called in the constructor. I'm trying to match the reliability of this pattern if possible. I'm working with UIViewControllers and UITableViewControllers inside a UINavigationController most of the time - if this effects it all. Here's an example: public MyController() { // Here? AddViews(); } public override ViewDidLoad() { base

Perviously when I wanted to make some actions when screen is opened I put them inside componentDidMount. For example I can fetch some data. like this. componentDidMount() { this.updateData(); } But with react-navigation componentDidMount occurs only one time when user open screen first time, and if later user open this page again it will not trigger componentDidMount. What is proper way to detect when page(screen) is activated and do actions? With react-navigation , you can do that. Add listeners in componentDidMount or componentWillMount this.subs = [ this.props.navigation.addListener(

I have a UIViewController that I am loading from inside another view controller and then adding its view to a UIScrollView . self.statisticsController = [self.storyboard instantiateViewControllerWithIdentifier:@"StatisticsViewController"]; self.statisticsController.match = self.match; [self.scrollView addSubview:self.statisticsController.view]; I've put breakpoints in the statistics view controller and viewDidLoad is being called but viewWillAppear isn't. Is it because I'm not pushing it onto the hierarchy or something? rdelmar You should add statisticsController as a child view controller of

Are there any guidelines for using these methods in the right manner? In particular, I would like to know what type of code I could use inside them. For example, if I have to call a method that retrieves data from a WS, where do I have to call it? Where can I register/unregister a NSNotification? etc. Manlio From UIViewController viewWillAppear: This method is called before the receiver’s view is about to be displayed onscreen and before any animations are configured for showing the view. You can override this method to perform custom tasks associated with presenting the view. For example, you

I have an UIViewController having this method: - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; NSLog(@"DISAPPEAR"); lastKnownOrientation = [self interfaceOrientation]; } -(void)openSendVC{ SendMsgViewController *vc = [[SendMsgViewController alloc]initWithNibName:@"SendMsgViewController" bundle:nil]; [self.navigationController pushViewController:vc animated:NO]; } In the second view controller ( SendMsgViewController ) viewDidLoad I have the following: [self presentViewController:picker animated:YES completion:NULL]; where picker is an UIImageViewPicker . The

I've got a question regarding the two mentioned methods, since in my tests I don´t make clear the order they are called. I thought that, firstly, viewDidLoad is called when the viewController is loaded for first time (as the name indicates), and inmediately after the init method. Then, I thought that once viewDidLoad returns, viewWillAppear is called. If you display another viewController, and then you return to this one, then it should be already loaded and only viewWillAppear will be called. However, while developing I make the impression that there is no order when calling viewDidLoad and