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  • Tab bar application with UINavigation Controller MOC not being retained.

    - by iamsmug
    I created a tab bar application from the template and added a navigation controller to one of the tabs. I have already created this app from the navigation app template already and is working. The reason I am doing it this way is because I need to add a tab bar and thought it would be easier starting by using the tab bar project template and adding the nav controller to it rather than the other way round. I have copied the data model over from the other project and added the relevant code to where it should be. The problem I am having is passing the moc from the app delegate to the tab with the nav controller on. Here is a snippet from my applicationDidFinishLaunching method in my app delegate: - (void)applicationDidFinishLaunching:(UIApplication *)application { [self createEditableCopyOfDatabaseIfNeeded]; Top_BananaTableViewController *top_BananaTableViewController = (Top_BananaTableViewController *)[navigationController topViewController]; top_BananaTableViewController.managedObjectContext = self.managedObjectContext; // Add the tab bar controller's current view as a subview of the window [window addSubview:tabBarController.view]; [window makeKeyAndVisible]; } Everything seems fine here but when it comes to the fetchedResultsController on my nav controller view it bombs out with: '+entityForName: could not locate an NSManagedObjectModel for entity name 'cards'' When I checked what was set to my managedObjectContext on that view it was null. I don't know why or where it is loosing it's setting. Please help.

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  • Renderbuffer Width (Open GL ES)

    - by Josh Elsasser
    I'm currently experiencing an issue with an Open GL ES renderbuffer where the backing and width are are both set to 15. Is there any way to set them to the width of 320 and 480? My project is built up on Apple's EAGLView class and ES1Renderer, but I've moved it from the app delegate to a controller. I also moved the CADisplayLink outside of it (I update my game logic with the timestamp from this) Any help would be greatly appreciated. I add the glview to the window as follows: CGRect applicationFrame = [[UIScreen mainScreen] applicationFrame]; [window addSubview:gameController.glview]; [window makeKeyAndVisible]; I synthesize the controller and the glview within it. The EAGLView and Renderer are otherwise unmodified. Renderer Initialization: // Get the layer CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer; eaglLayer.opaque = TRUE; eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:FALSE], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil]; renderer = [[ES1Renderer alloc] init]; Render "resize from layer" Method - (BOOL)resizeFromLayer:(CAEAGLLayer *)layer { // Allocate color buffer backing based on the current layer size glBindRenderbufferOES(GL_RENDERBUFFER_OES, colorRenderbuffer); [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:layer]; glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth); glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight); NSLog(@"Backing Width:%i and Height: %i", backingWidth, backingHeight); if (glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) { NSLog(@"Failed to make complete framebuffer object %x", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES)); return NO; } return YES; }

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  • How to push text from one UITextfield to another UITextfield in the next View? And back!?

    - by Chrizzz
    an Hi, I have an UITextField in one view, UITextField A in View A. And I have another in view B, UITextField B in View B. I use a Navigation Controller Bar to switch between the views. The UITextFields are properties and connected Outlets of both views A and B. On my view A there is an "Options"-button which pushes view B. So when you are typing in Textfield A, I would like the same text to appear in Textfield B. When you edit TextField B and you go back to view A (via the "Title View A"-button in de navigation bar), I would like the same text to re-appear in Textfield A. I expected this to be easy. But I can't get it working. I tried: ViewBController *controller = [[ViewBController alloc] initWithNibName:@"ViewBController" bundle:nil]; controller.TextFieldA.text = TextFieldB.text But nothing appeared in view B. And how do I get back? I dont want to use NSUserdefaults because I would have to remove the values also.

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  • Displaying modal view in Objective-C

    - by kpower
    I'm trying to display Modal View in my app. I have subclass of UIViewController that has only the "Done" button (UIButton created with IB and linked with XCode). .h @interface myModalVC : UIViewController { UIButton *bDone; } @property (nonatomic, retain) IBOutlet UIButton *bDone; - (IBAction)bDoneTouchDown:(id)sender; @end .m #import "myModalVC.h" @implementation myModalVC @synthesize bDone; - (void)dealloc { [bDone release]; [super dealloc]; } - (void)viewDidLoad { [super viewDidLoad]; } - (void)viewDidUnload { } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (UIInterfaceOrientationLandscapeLeft == interfaceOrientation || UIInterfaceOrientationLandscapeRight == interfaceOrientation); } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } - (IBAction)bDoneTouchDown:(id)sender { [self.parentViewController dismissModalViewControllerAnimated:YES]; } @end I'm trying to display modal view with this code (from my main view): myModalVC *temp = [[[myModalVC alloc] initWithNibName:@"myModalVC" bundle:[NSBundle mainBundle]] autorelease]; [self presentModalViewController:temp animated:YES]; If this code is placed in some method, that responds to button touches - everything is fine. But when I place it to some other method (called during some processes in my app) - modal view is displayed without problems, but when I press (touch) "Done" button, application crashes with "Program received signal: “EXC_BAD_ACCESS”." What am I doing wrong?

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  • how to set a tableview delegate

    - by dubbeat
    Hi, I'm trying to use a tableview without using a nib and without using a UITableViewController. I have added a UITableView instance to a UIViewController Like So mytable = [[UITableView alloc] initWithFrame:CGRectMake(22, 207, 270, 233)]; [mytable setDelegate:self]; [self.view mytable]; Also I have added the following table view methods to my UIViewController (cut for brevities sake) - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { I am getting a warning saying that my UIViewController does not implement UITableView delegate protocol. Whats the correct way to tell the table view where its delegate methods are? (This is my first attempt at trying to use a UITableView without selecting the UITableTableview controller from the new file options)

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  • UIActivityIndicator not working properly?

    - by medma
    Hello frends, I have a problem regarding UIActivityIndicator. I applied "[spinner startAnimating]" at the IBAction on a button and then doing some process. After the process activityindicator should be stopped and then navigate to another view. But the activity indicator does not appear. When I remove the line "[spinner stopAnimating]" then the indicator appears but not at the instant button is pressed. It appears just before the other view loads, and apparently does not appear, I mean it does not appear but if we see very carefully then only it appears for an instant. Thanx in advance for any answer.

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  • how to set Custom attribute of NSManagedObject which is calculated from other attributes ?

    - by Kundan
    I am using core data framework to manage objects.i have an entity which has several attributes of decimal types. Among them is attribute which is mathematically calculated from other attributes. Ex :- @interface Marks : NSManagedObject { } @property (nonatomic, retain) NSDecimalNumber * answerGradeA; @property (nonatomic, retain) NSDecimalNumber * answerGradeB; @property (nonatomic, retain) NSDecimalNumber * answerGradeC; @property (nonatomic, retain) NSDecimalNumber * total; Here i want attribute total = 3xanswerGradeA + 2xanswerGradeB + 1xanswerGradeC if it is possible to do like this, then how ? please reply. Thanks in advance.

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  • Tableview with sections managed by fetched results controller

    - by Matthes
    Hi, I'm quite new to CoreData and need help with one issue. I have tableview which simply lists cities stored in SQLite db. City is defined by "cityId" and "name" attributes. Data are fetched using NSFetchedResultsController and everything works fine except that I can't figure out how to make FetchedResultsController to group cities by first letter of city names. When I supply "name" for sectionNameKeyPath argument of initWithFetchRequest:managedObjectContext:sectionNameKeyPath:cacheName: method, it creates section for each city, which is obviously something I don't want. I can't figure out how to create an expression which would make it work in way I need. thanks for any tips and/or advices on this Matthes

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  • Regarding orientation

    - by muhammadhanifas
    Anyone please answer for my requirement Im using my application in this order, first page = UIViewController, secondpage = UITabBarController with 4 tabs, I need landscape on the orientation on the second tabpage(UIViewController) ? not working.. Note : When using UITabBarController its working perfect but when I add the UIViewController for my first page, the orientation not working...? anyone who knows the solution plz answer

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  • CoreData could not fulfill a fault when adding new attribute

    - by cagreen
    I am receiving a "CoreData could not fulfill a fault for ..." error message when trying to access a new attribute in a new data model. If I work with new data I'm ok, but when I attempt to read existing data I get the error. Do I need to handle the entity differently myself if the attribute isn't in my original data? I was under the impression that Core Data could handle this for me. My new attribute is marked as optional with a default value. I have created a new .xcdatamodel (and set it to be the current version) and updated my NSPersistentStoreCoordinator initialization to take advantage of the lightweight migration as follows: NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; NSError *error = nil; persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]]; if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } Any help is appreciated.

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  • -[UITableViewRowData isEqualToString:]: unrecognized selector sent to instance 0x391dce0

    - by tak
    I have a datatable which shows the list of contacts. when I start the application all the data is loaded correctly.But after selecting a contact, I am sometimes getting this exception :- Program received signal: “EXC_BAD_ACCESS”. and sometimes -[UITableViewRowData isEqualToString:]: unrecognized selector sent to instance 0x391dce0 most probably for this code:- - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } ExpenseTrackerAppDelegate *appDelegate = (ExpenseTrackerAppDelegate *)[[UIApplication sharedApplication] delegate]; Person *person = (Person *)[appDelegate.expensivePersonsList objectAtIndex:indexPath.row]; NSString *name = (NSString *)[NSMutableString stringWithFormat:@"%@ %@" ,person.lastName , person.firstName]; cell.textLabel.text = name; //cell.detailTextLabel.text = person.lastName; // Configure the cell. return cell; } If I replace these lines of code NSString *name = (NSString *)[NSMutableString stringWithFormat:@"%@ %@" ,person.lastName , person.firstName]; cell.textLabel.text = name; with this code cell.textLabel.text = person.lastName; then everything works fine? I dont know what exactly happens?

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  • How should I properly format this code?

    - by ct2k7
    Hi, I've a small issue here. I am using an if statement with UIAlertView and I have two situations, both result in UIAlertViews. However, in one situation, I want to dismiss just the UIAlertView, the other, I want the UIAlertView to be dismissed and view to return to root view. This code describes is: if([serverOutput isEqualToString:@"login.true"]){ [Alert dismissWithClickedButtonIndex:0 animated:YES]; [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; UIAlertView *success = [[UIAlertView alloc] initWithTitle:@"Success" message:@"The transaction was a success!" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil]; [success show]; [success release]; } else { UIAlertView *failure = [[UIAlertView alloc] initWithTitle:@"Failure" message:@"The transaction failed. Contact sales operator!" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil]; [failure show]; [failure release]; } } -(void)alertView: (UIAlertView *)success clickedButtonAtIndex: (NSInteger)buttonIndex{ switch(buttonIndex) { case 0: { [self.navigationController popToRootViewControllerAnimated:YES]; } } } So, in both cases, they follow the above action, but obviously, that's not what I want. Any ideas on what I do here?

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  • UIPickerView didSelectRow delay

    - by Rob Bonner
    Hello all, I have a UIPickerView implemented in one of my pages that depends on the didSelectRow delegate method. An odd behavior I have noticed is when the user moves a wheel and leaves it between selections, then the wheel will move very slowly to the closest selection. The didSelectRow event will not fire until this is complete, sometimes 3 seconds later. Is there a way to speed this up, or detect when the wheel is being moved, so I can freeze my interface during this time?

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  • MPMoviePlayerContentPreloadDidFinishNotification seems more reliable than MPMoviePlayerLoadStateDidChangeNotification

    - by user567889
    I am streaming small movies (1-3MB) off my website into my app. I have a slicehost webserver, I think it's a "500MB slice". Not sure off the top of my head how this translates to bandwidth, but I can figure that out later. My experience with MPMoviePlayerLoadStateDidChangeNotification is not very good. I get much more reliable results with the old MPMoviePlayerContentPreloadDidFinishNotification If I get a MPMoviePlayerContentPreloadDidFinishNotification, the movie will play without stuttering, but if I use MPMoviePlayerLoadStateDidChangeNotification, the movie frequently stalls. I'm not sure which load state to check for: enum { MPMovieLoadStateUnknown = 0, MPMovieLoadStatePlayable = 1 << 0, MPMovieLoadStatePlaythroughOK = 1 << 1, MPMovieLoadStateStalled = 1 << 2, }; MPMovieLoadStatePlaythroughOK seems to be what I want (based on the description in the documentation): MPMovieLoadStatePlaythroughOK Enough data has been buffered for playback to continue uninterrupted. Available in iOS 3.2 and later. but that load state NEVER gets set to this in my app. Am I missing something? Is there a better way to do this?

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  • Custom UITableView headerView disappears after memory warning

    - by psychotik
    I have a UITableViewController. I create a custom headerView for it's tableView in the loadView method like so: (void)loadView { [super loadView]; UIView* containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, width, height * 2 )]; containerView.tag = 'cont'; containerView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin; UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom]; button.frame = CGRectMake(padding, height, width, height); ... //configure UIButton and events UIImageView* imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.png"] highlightedImage:[UIImage imageNamed:@"highlight.png"]]; imageView.frame = CGRectMake(0, 0, width, height ); ... //configure UIImageView [containerView addSubview:button]; [containerView addSubview:imageView]; self.tableView.tableHeaderView = containerView; [imageView release]; [containerView release]; } None of the other methods (viewDidLoad/Unload, etc) are overloaded. This controller is hosted in a tab. When I switch to another tab and simulate a memory warning, and then come back to this tab, my UITableView is missing my custon header. All the rows/section are visible as I would expect. Putting a BP in the loadView code above, I see it being invoked when I switch back to the tab after the memory warning, and yet I can't actually see the header. Any ideas about what I'm missing here? EDIT: This happens on the device and the simulator. On the device, I just let a memory warning occur by opening a bunch of different apps while mine is in the background.

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  • Problem with a call button - doesn't open tel:// URL

    - by Christophe Konig
    Hi, I am trying to make a call button that will call 18 which is Fire Dept in France. So my code is : [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://18"]]; It doesn't work and I get this message in the console : < warning Ignoring unsafe request to open URL tel://18 But I saw other application that have the same button fully working ! I am trying this on the device of course. What am I missing ?

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  • Why do I not get low memory issues until images are draw on the screen?

    - by maxpower
    I am able to load over 200 UIImage objects into a NSMutableDictionary without any memorry warning issues. When I start displaying them on the screen (after about showing 10-20 images) I get low memory warnings and an eventual crash. Only about 8 images are displayed at anyone time. Does it take additional memory to actually draw a UIImage on the screen? No memory leaks are showing up and i've reviewed code for leaks many many times.

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  • Push notification not received in ios5 device

    - by Surender Rathore
    I am sending push notification on device which has iOS 5.0.1, but notification is not received on iOS5 device. If i try to send notification on iOS4.3.3 device, it received on this device. My server is developed in c# and apple push notification certificate is used in .p12 format. My code to register the notification is - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. // Set the navigation controller as the window's root view controller and display. deviceToken = nil; self.window.rootViewController = self.navigationController; [self.window makeKeyAndVisible]; [[UIApplication sharedApplication] enabledRemoteNotificationTypes]; [[UIApplication sharedApplication] registerForRemoteNotificationTypes: UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert]; return YES; } - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)devToken { UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"Succeeded in registering for APNS" message:@"Sucess" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alertView show]; [alertView release]; deviceToken = [devToken retain]; NSMutableString *dev = [[NSMutableString alloc] init]; NSRange r; r.length = 1; unsigned char c; for (int i = 0; i < [deviceToken length]; i++) { r.location = i; [deviceToken getBytes:&c range:r]; if (c < 10) { [dev appendFormat:@"0%x", c]; } else { [dev appendFormat:@"%x", c]; } } NSUserDefaults *def = [NSUserDefaults standardUserDefaults]; [def setObject:dev forKey:@"DeviceToken"]; [def synchronize]; NSLog(@"Registered for APNS %@\n%@", deviceToken, dev); [dev release]; } - (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error { NSLog(@"Failed to register %@", [error localizedDescription]); UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"FAILED" message:@"Fail" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alertView show]; [alertView release]; deviceToken = nil; } - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo { NSLog(@"Recieved Remote Notification %@", userInfo); NSDictionary *aps = [userInfo objectForKey:@"aps"]; NSDictionary *alert = [aps objectForKey:@"alert"]; //NSString *actionLocKey = [alert objectForKey:@"action-loc-key"]; NSString *body = [alert objectForKey:@"body"]; // NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:[self.navigationController viewControllers]]; // // if ([viewControllers count] > 2) { // NSRange r; // r.length = [viewControllers count] - 2; // r.location = 2; // [viewControllers removeObjectsInRange:r]; // // MapViewController *map = (MapViewController*)[viewControllers objectAtIndex:1]; // [map askDriver]; // } // // [self.navigationController setViewControllers:viewControllers]; // [viewControllers release]; //NewBooking,"BookingId",Passenger_latitude,Passenger_longitude,Destination_latitude,Destination_longitude,Distance,Time,comments NSArray *arr = [body componentsSeparatedByString:@","]; if ([arr count]>0) { MapViewController *map = (MapViewController*)[[self.navigationController viewControllers] objectAtIndex:1]; [map askDriver:arr]; [self.navigationController popToViewController:[[self.navigationController viewControllers] objectAtIndex:1] animated:YES]; } //NSString *sound = [userInfo objectForKey:@"sound"]; //UIAlertView *alertV = [[UIAlertView alloc] initWithTitle:actionLocKey // message:body delegate:nil // cancelButtonTitle:@"Reject" // otherButtonTitles:@"Accept", nil]; // // [alertV show]; // [alertV release]; } Can anyone help me out with this issue. Why notification received on iOS4.3 device but not on iOS5? Thank you very much!!! in advance

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  • UITextView cut problem !

    - by Mc.Lover
    Hi , i have problem with cut some text from UITextView , i idon't understand how can implement Cut , for example copy or paste it's like this : -(IBAction)copy { NSString *copyString = [[NSString alloc] initWithFormat:@"%@",[textPad text]]; UIPasteboard *pb = [UIPasteboard generalPasteboard]; [pb setString:copyString]; } -(IBAction)paste { UIPasteboard *pb = [UIPasteboard generalPasteboard]; textPad.text = [pb string]; } but about cut ! thank you ,

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