uiviewcontroller

问题 I built a Core data model with different entities for my database, on my iPad app. I do want to access these attributes (and fill the dBase) from different viewControllers. For instance, there are UITextFields in viewController A, and another UITextField in viewController. I'd like the seized information to fill different attributes from my Core Data entity... Is that possible? What is the best practice to do so? My problems : I declare the objects with type "entity" in viewController A I

问题 An iphone app I'm working on is terminating periodically ... and I have a feeling it is because of how I'm accessing a shared NSArray amongst several view controllers. So ... What is the best way to pass NSArray/NSMutableArray amongst several ViewControllers ... all of which can modify and/or set it to nil or whatever? Thanks 回答1: There are two approaches, generally speaking. In the first approach, when you instantiate your next view controller, you could set an array property to "inherit"

问题 My parent ViewController class contains a UISearchBar. I have a UIButton that will push on a new ViewController via the code below AddViewController *addViewController = [[AddViewController alloc] initWithNibName:@"AddView" bundle:nil]; [self presentModalViewController:addViewController animated:YES]; [addViewController release]; In the AddViewController the User is presented with a TableView of animal names. On the - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:

问题 This is related to a question I asked earlier, but the original question was answered. Hope it's okay to open a new question, if not, feel free to delete it. I'm trying to build a simple iPhone application using tableviews and a tabbar. Every view is the same programmatically, except for the title and the kind of data which needs to be displayed. Except for that they all behave the same. Currently code in my AppDelegate handles the distribution of viewcontrollers to the different tabs and

问题 I simply want to present a small option dialog over an existing main UIViewController/UIView , so that on an IPad I would see a small Dialog and in the Background I will see the Main View. I managed to show a UIViewController/UIView in a modal view style as follow: func showoptions(){ let storyboard = UIStoryboard(name: "Main", bundle: nil) let controller = storyboard.instantiateViewControllerWithIdentifier("Options") as! UIViewController controller.modalPresentationStyle =

问题 I create a table view controller programmatically that contains different sections I want to add 3 rows with check mark box in my third sections (I used storyboard!) would you please give me some hint that how can I do that .. my question is how can I set checkbox in left side for my third sections here is the picture:instead of Please set your code: having 3 rows with check mark box in Absence Code sections Here is my view in storyboard: Here is the code: - (void)viewDidLoad { [super

问题 I am having a lot of issues handling my incoming local notifications. My app is using storyboards and has a tabbarcontroller as the rootviewcontroller. Currently I launch the modalviews from 'didReceiveLocalNotification' in the following manner: MedicationReminderViewController *vc = [[MedicationReminderViewController alloc] initWithNibName:@"MedicationReminderViewController" bundle:nil]; vc.notificationInfo = [[NSDictionary alloc] initWithDictionary:notification.userInfo];

问题 So I'm customizing this control I found since I think it works very well except with this issue of mine: http://www.cocoacontrols.com/controls/fsverticaltabbarcontroller I wanted to load a UICOllectionViewCOntroller instead of a regular ViewController whenever an item is tapped on the sidebar. So I did this modification when selecting an item: - (void)setSelectedIndex:(NSUInteger)selectedIndex { NSLog(@"selected Index is %@", [NSNumber numberWithInt:selectedIndex]); NSLog(@"_selected Index is

问题 I'm getting the following error when compile swift application (iOS 8.1) Type 'ViewController' does not conform to protocol 'UICollectionViewDataSource' at "class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate" line I've just checked few posts here but no one helps me to solve this problem. Here's the code of ViewController.swift file: import UIKit class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate { var

问题 I am implementing a custom keyboard and need to update the original textField when buttons are touched on that keyboard. I have tried following the answer to this question: Return Inputs to UITextfield with custom inputView but I don't find it very clear. In statViewController I have defined my textField xValue , and created an instance of my keyboard: DCKeyboard *dckXValue = [[DCKeyboard alloc] initWithNibName:@"DCKeyboard" bundle:nil]; The next line of the answer uses self, so I take it