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  • NSPopupButton bound to NSArrayController not updating

    - by BuzzB
    I've got an NSPopupButton bound to an NSArrayController. (Man, that was harder than I thought it would be!) I have an NSArrayController bound to an NSMutableArray via the NSArrayController's "Controller Content" binding. The "Content" and "Content Values" bindings of the NSPopupButton are bound to my NSArrayController, and "Selected Object" is bound to a member in my app delegate. It is working as I expect. Except, when I add items to the NSMutableArray that my NSArrayController is bound to they don't appear in the popup. I kind of expected this to work automagically... with the NSArrayController observing the NSMutableArray and updating the NSPopupButton as necessary. Clearly I am missing something. [Update] Ok, clearly I am adding items to my array in a way that the array controller can't see. I finally found this... https://developer.apple.com/library/mac/documentation/cocoa/conceptual/CocoaBindings/Concepts/Troubleshooting.html But I really don't understand what it means. Does anyone know of a simple example of the proper way to dynamically added items to a bound NSMutableArray when the "adder" has no idea that there is a UI element bound to the array? Any help would be greatly appreciated.

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  • Remove clear button (grey x) to the right of UISearchBar when cancel button tapped

    - by David Foster
    Right, to begin my question, here's some screenies of the problem already solved by the Spotify app: Spotify's Step 1: Standard UISearchBar not in editing mode. Spotify's Step 2: UISearchBar now in editing mode. Search term entered. Cancel button slides in from the right, and the clear button (grey x) appears. Spotify's Step 3: Cancel button pressed; keyboard slides out and the search bar is no longer in editing mode. Search term remains and the grey x button is now hidden. At present, the following code fires off when my cancel button is pressed: - (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar { [searchBar resignFirstResponder]; [searchBar setShowsCancelButton:NO animated:YES]; } Which results in: My Step 3: Search bar now not in editing mode. Cancel button and keyboard has slid out. Search term remains but so does the grey x. So, my question is this: given that -resignFirstResponder (and -endEditing:, FYI) does not hide the grey x button when a search bar has had text entered into it, how does one hide it? Thanks again, friends.

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  • Appending Strings to NSMutableString

    - by Typeoneerror
    Been looking at this for a bit now and not understanding why this simple bit of code is throwing an error. Shortened for brevity: NSMutableString *output; ... @property (nonatomic, retain) NSMutableString *output; ... @synthesize output; ... // logs "output start" as expected output = [NSMutableString stringWithString:@"output start"]; NSLog(@"%@", output); ... // error happens here [output appendString:@"doing roll for player"]; Can anyone spot my mistake?

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  • Background image for list view still shows white behind text for cells.

    - by MonkeyTroy
    I wanted to put a background image partially visible behind a list view. I created a list view in my nib with an image view behind it and made the list view background 20% opacity. This allows the background image to show thru but my text in the cells show a white background behind and if I create the cells in cellForRowAtIndexPath the cells have a white background too. I am creating and setting the cell textLabel and the detailTextLabel in the cellForRowAtIndexPath event. Not sure how to get rid of that, or if there is a better way to do the background image.

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  • How do I set an array in one class with another array in another class

    - by Stef
    I've populated and array with data like this in one class... PowerClass.h NSMutableArray pickerArray; @property (nonatomic, retain) NSMutableArray pickerArray; - PowerClass.m @synthesize pickerArray; @implementation NSMutableArray *array = [[NSArray alloc] initWithObjects:@"stef", @"steve", @"baddamans", @"jonny", nil]; pickerArray = [NSMutableArray arrayWithArray:array]; And I'm trying to set the Array in another class WeekClass.h PowerClass *powerClass; NSMutableArray *pickerData; @property (nonatomic, retain) NSMutableArray pickerData; @property (nonatomic, retain) PowerClass *powerClass; WeekClass.m @implementation pickerData = [NSMutableArray arrayWithArray:powerClass.pickerArray]; I have no errors or warnings. It just crashes. The NSLog says that the powerClass.pickerArray is NULL. Please help point me in the right direction.

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  • Placemark not giving city name in ios 6

    - by Sawant
    I am using this code in which i am getting Placemark but it not giving the city name. Earlier i am using MKReverse Geocoder to get the placemark in which i am getting the city name but as in ios6 it showing deprecated because the apple developer added every thing in CLLocation. so i used this code. `-(void) locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { CLLocation *location = [locationManager location]; NSLog(@"location is %@",location); CLGeocoder *fgeo = [[[CLGeocoder alloc] init] autorelease]; // Reverse Geocode a CLLocation to a CLPlacemark [fgeo reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error){ // Make sure the geocoder did not produce an error // before continuing if(!error){ // Iterate through all of the placemarks returned // and output them to the console for(CLPlacemark *placemark in placemarks){ NSLog(@"%@",[placemark description]); city1= [placemark.addressDictionary objectForKey:(NSString*) kABPersonAddressCityKey]; NSLog(@"city is %@",city1); } } else{ // Our geocoder had an error, output a message // to the console NSLog(@"There was a reverse geocoding error\n%@", [error localizedDescription]); } } ]; } ` here as i am seeing in console in NSLog(@"%@",[placemark description]); its giving output like :- abc road name,abc road name, state name,country name. any help please .Thanking in advance.

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  • Removing all CALayer's sublayers

    - by radex
    Hi. I have trouble with deleting all layer's sublayers. I do this manually, but it's unwanted code clutter. I found many topics about this in google, but no answer. I tried to do something like this: for(CALayer *layer in rootLayer.sublayers) { [layer removeFromSublayer]; } but it didn't work. Also, i tried to clone rootLayer.sublayers into separate NSArray, but result was the same. Any ideas? regards, radex PS. sorry for my English. Edit: I thought it works now, but I was wrong. It works good with CALayers, but it doesn't work with CATextLayers. Any ideas?

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  • How do you determine with CLLocationManager when a user denies access to location services?

    - by Brennan
    With CLLocationManager I can use the following code to determine if I can access location services on the device. This is the master setting for all apps and can be turned on and off. if (self.locationManager.locationServicesEnabled) { [self.locationManager startUpdatingLocation]; } But a user can deny access to an individual app and in order to not execute the code to use the location manager I need to know if the user approved access to location services for this specific app. I saw that at one point there was a property called locationServicesApproved which appears it would indicate if the user approved access to location services in this app. But it was removed in 2008. Source: http://trailsinthesand.com/apple-removes-notifications-from-iphone-sdk-beta-4/ It appears that there is no way to determine if the user approved access to location services but that seems to be a big hole in the SDK. Is this feature in the SDK elsewhere? What can I do to determine if the user has approved access to location services for the current app?

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  • Problem with Core Data - EXC_BAD_ACCESS

    - by BarrettJ
    I'm using the following code and I'm getting an EXC_BAD_ACCESS when trying to get the count of objects - anyone have any idea why? Oddly enough, the error only happens if the count should be one or greater, if there are no objects it seems to work fine (it outputs null). NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"TVShow" inManagedObjectContext:[self managedObjectContext]]; [fetchRequest setEntity:entity]; [fetchRequest includesPendingChanges]; //NSPredicate *predicate = [NSPredicate predicateWithFormat:@"ID == %@", showId]; //[fetchRequest setPredicate:predicate]; NSError *error; NSLog(@"Generating Count"); NSUInteger count = [[self managedObjectContext] countForFetchRequest:fetchRequest error:&error]; if(count == NSNotFound) { NSLog(@"error"); } else { NSLog(@"%@", count); // EXC_BAD_ACCESS here } [fetchRequest release];

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  • Single-Stage vs Two-Stage Animation for iPhone Apps?

    - by Devoted
    What are single-state and two-stage animation for rotating an iPhone window? This is the "error" message I get in the Debugger Console (nothing crashes): Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove two-stage method implementations. I was working through the book "Beginning iPhone Development: Exploring the iPhone SDK" by Apress (Dave Mark, Jeff LaMarche) on the Swap Project.

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  • How to parse HTML with TouchXML or some other alternative.

    - by 0SX
    Hi, I'm trying to parse the HTML presented below with TouchXML but it keeps crashing when I try to extract certain attributes. I'm totally new to the parser world so I apologize for being a complete idiot. I need help to parse this HTML. What I'm trying to accomplish is to parse each attribute and value or what not and copy them to a string. I've been trying to find a good parser to parse HTML and I believe TouchXML is the best I've seen because of Tidy. Speaking of Tidy, How could I run this HTML through Tidy first then parse it? I'm not sure how to do this. Here is the code that I have so far that doesn't work due to it's not pulling everything I need from the HTML. Any help or advice would be much appreciated. Thanks My current code: NSMutableArray *res = [[NSMutableArray alloc] init]; // using local resource file NSString *XMLPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"example.html"]; NSData *XMLData = [NSData dataWithContentsOfFile:XMLPath]; CXMLDocument *doc = [[[CXMLDocument alloc] initWithData:XMLData options:0 error:nil] autorelease]; NSArray *nodes = NULL; nodes = [doc nodesForXPath:@"//div" error:nil]; for (CXMLElement *node in nodes) { NSMutableDictionary *item = [[NSMutableDictionary alloc] init]; [item setObject:[[node attributeForName:@"id"] stringValue] forKey:@"id"]; [res addObject:item]; [item release]; } NSLog(@"%@", res); [res release]; HTML file that needs to be parsed: <html> <head> <base target="_blank" /> </head> <body style="margin:2;"> <div id="group"> <div id="groupURL"><a href="http://www.example.com/groups">Group URL</a></div> <img id="grouplogo" src="http://images.example.com/groups/image.png" /> <div id="groupcomputer"><a href="http://www.example.com/groups/page" title="Group Title">Group title this would be here</a></div> <div id="groupinfos"> <div id="groupinfo-l">Person</div><div id="groupinfo-r">Ralph</div> <div id="groupinfo-l">Years</div><div id="groupinfo-r">4 years</div> <div id="groupinfo-l">Salary</div><div id="groupinfo-r">100K</div> <div id="groupinfo-l">Other</div><div id="groupoth" style="width:15px">other info</div> </body> </html> EDIT: I could use Element Parser but I need to know how to extract the Person's Name from the following example which would be Ralph in this case. <div id="groupinfo-l">Person</div><div id="groupinfo-r">Ralph</div>

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  • How to include other controls in a scrollbar?

    - by Paperflyer
    I want to create a scrollview with a zooming control and a button next to the scrollbar. Sort of like the "tile window" button in XCode (top right corner of the editor), it should be in the same box that usually is used by the scrollbar only. Do you have an idea of how to approach this? I was thinking to use an NSScrollView and set the scrollbars to a custom subclass of NSScroller which includes the other widgets. What kinds of buttons use the same style as the scrollbar?

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  • MPMusicPlayerController stops sending notifications

    - by jasongullickson
    I have a MPMusicPlayerController playing the entire iPod library and I'm subscribed to the notifications when tracks change etc. This is all working correctly When the end of the playlist is reached, MPMusicPlayerController sends a change of state notification and stops. When I re-start the player, music begins to play again but MPMusicPlayerController no longer sends notifications when tracks change, etc. Thoughts?

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  • How to change the font size gradually in a UILabel?

    - by Flocked
    Hello, is there a way to change the font size gradually in a UILabel? I tried it with: [UIView beginAnimations:@"foo" context:nil]; [UIView setAnimationDuration:0.8]; uiLabel.font = [UIFont boldSystemFontOfSize:144]; [UIView commitAnimations]; The problem is that the change of the font size happens instantly.

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  • MKReverseGeocoder delegate location?

    - by fuzzygoat
    I have a quick question regarding memory management that I am not quite sure about. I currently have a locationManager delegate that calls locationManager:didUpdateToLocation:fromLocation when it resolves the device location. My question is I am looking at adding ReverseGeoCoding after I have obtained the [newLocation coordinate] but am unsure about doing the alloc here, as each time locationManager:didUpdateToLocation:fromLocation gets called I will be alloc-ing a new MKReverseGeoCoder? // LOCATION -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { // GeoCoding: MKReverseGeocoder *geoCoder = [[MKReverseGeocoder alloc] initWithCoordinate:[newLocation coordinate]]; [geoCoder setDelegate:self]; [geoCoder start]; [self foundLocation]; } Can anyone point me in the right direction with regards to this? I did try doing the alloc in application:didFinishLaunchingWithOptions: but then realised I did not have access to [newLocation coordinate]. many thanks gary

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  • Core-data: when accessing a relationship, the count method on NSSet fails

    - by lordsandwich
    I'm trying to access a relationship (one to many) programatically. My Data model contains an NSManagedEntity called language (with a two string attributes) with a relationship to an entity called WordCategory (one-to-many). I use an NSFetchRequest to get all the Language entities. that works fine. I get the valueForKey for the relationship and that works fine. I can work with its objects. However, when I try to send the message count to the NSSet that stores the WordCategory objects I get a In other words, this line works: NSLog(@"word category count %@",[[wordCategory anyObject] valueForKey:@"name"]); This one doesn't: NSLog(@"word category count %@",[wordCategory count] I get a the message: EXC_BAD_ACCESS in the debugger. Here's the rest of the code: NSManagedObjectContext *moc = [myAppDelegate managedObjectContext]; NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity:[NSEntityDescription entityForName:@"Language" inManagedObjectContext:moc]]; NSError *error = nil; NSArray *results = [moc executeFetchRequest:request error: &error]; if (error) { [NSApp presentError:error]; return; } NSManagedObject *obj = [results objectAtIndex:0]; NSSet *wordCategory = [obj valueForKey:@"category"]; NSLog(@"word category count %@",[wordCategory count]); I'll appreciate any light than anybody can shed in this mystery. Thanks for your help!

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  • Trying to parse twitter trends

    - by timothy5216
    Im trying to parse twitter trends but i keep getting a parser error at "as_of". anyone know why this is happening? EDIT: Here is the code im using NSMutableArray *tweets; tweets = [[NSMutableArray alloc] init]; NSURL *url = [NSURL URLWithString:@"http://search.twitter.com/trends/current.json"]; trendsArray = [[NSMutableArray alloc] initWithArray:[CCJSONParser objectFromJSON:[NSString stringWithContentsOfURL:url encoding:4 error:nil]]]; NSMutableDictionary *dict = [[NSMutableDictionary alloc] init]; for (int i = 0; i < [trendsArray count]; i++) { dict = [[NSMutableDictionary alloc] init]; //[post setObject: [[currentArray objectAtIndex:i] objectForKey:@"query"]]; [dict setObject:[trendsArray objectAtIndex:i] forKey:@"trends"]; //[dict setObject:[trendsArray objectAtIndex:i] forKey:@"query"]; //[post setObject:[trendsArray objectAtIndex:i] forKey:@"as_of"]; [tweets addObject:dict]; //post = nil; }

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  • longitude and latitude for current location returned from CLLocationManager in UK region is not corr

    - by bond
    Hi I am getting latitude and longitude of current location from CLLocationManager delegate method. It works fine for some region but its giving problem in UK region. When it is used in UK region, the current location longitude and latitude returned from CLLocationManager is not proper. Thanks heres a part of the logic i am using. -(void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; self.locationManager = [[CLLocationManager alloc] init]; if(self.locationManager.locationServicesEnabled) { self.locationManager.delegate = self; self.locationManager.distanceFilter = kCLDistanceFilterNone; self.locationManager.desiredAccuracy = kCLLocationAccuracyBest; } } -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { NSLog(@"Updating"); //if the time interval returned from core location is more than 15 seconds //we ignore it because it might be from an old session if ( abs([newLocation.timestamp timeIntervalSinceDate: [NSDate date]]) < 15) { self.latitude = newLocation.coordinate.latitude; self.longitude = newLocation.coordinate.longitude; NSLog(@"longitude=%f-- latitude=%f--",self.longitude,self.latitude); [self.locationManager stopUpdatingLocation]; [self removeActivityIndicator]; [[self locationSaved] setHidden:NO]; [[self viewLocationInMap] setEnabled:YES]; }}

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  • Unbalanced calls to begin/end appearance transitions for <ViewController>,<Tab>

    - by onkar
    I am trying to implement Tabs into my secondView.On button touch(from ViewController.m) I am navigating to secondView(Tabs). In my Tabs.xib file I have added a TabBar at bottom and it is custom class of UITabBar. ViewController.m - (IBAction)touchedInside:(id)sender { NSLog(@"touhced up inside"); Tabs *temp = [[Tabs alloc]initWithNibName:@"Tabs" bundle:nil]; [self.navigationController pushViewController:temp animated:YES]; [self presentViewController:temp animated:YES completion:nil]; } Tabs.m - (void)viewDidLoad { [super viewDidLoad]; AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; UITabBarController *tabBarController = [[UITabBarController alloc]init]; /* Tab_1 *firstView = [[Tab_1 alloc] init]; UITabBarItem *item1 = [[UITabBarItem alloc]initWithTitle:@"First" image:nil tag:1]; [firstView setTabBarItem:item1]; NSLog(@"after first tab is added"); Tab_2 *secondView = [[Tab_2 alloc] init]; UITabBarItem *item2 = [[UITabBarItem alloc]initWithTitle:@"Sec" image:nil tag:1] ; [secondView setTabBarItem:item2]; NSLog(@"after second tab is added"); [tabBarController setViewControllers:[NSArray arrayWithObjects:firstView,secondView,nil] animated:NO]; NSLog(@"after tab is added"); [appDelegate.window addSubview:tabBarController.view]; NSLog(@"after view is added"); */ appDelegate.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // Override point for customization after application launch. UIViewController *viewController1 = [[Tab_1 alloc] initWithNibName:@"Tab 1" bundle:nil]; UIViewController *viewController2 = [[Tab_2 alloc] initWithNibName:@"Tab 2" bundle:nil]; UIViewController *viewController3 = [[Tab_2 alloc] initWithNibName:@"Tab 1" bundle:nil]; tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, viewController3, nil]; appDelegate.window.rootViewController = self.tabBarController; [appDelegate.window makeKeyAndVisible]; Tabs *temp = [[Tabs alloc]initWithNibName:@"Tabs" bundle:nil]; [self.navigationController presentModalViewController:temp animated:NO]; } Errors Unbalanced calls to begin/end appearance transitions for <ViewController: 0x6833c80>. 2012-12-06 09:57:48.963 demoTabs[667:f803] Unbalanced calls to begin/end appearance transitions for <Tabs: 0x6a3fc90>.

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  • NSPredicate case-insensitive matching on to-many relationship

    - by Brian Webster
    I am implementing a search field where the user can type in a string to filter the items displayed in a view. Each object being displayed has a keywords to-many relationship, and I would like to be able to filter the objects based on their keywords. Each keyword object has a name property, so I've set up an NSPredicate to do the filtering that looks like this: NSPredicate* predicate = [NSPredicate predicateWithFormat:@"keywords.name CONTAINS %@", self.searchString]; This works, but the problem is that the search is case-sensitive, so if the keyword has a capital letter but the user types in all lowercase, no matches are found. I've tried the following modification: NSPredicate* predicate = [NSPredicate predicateWithFormat:@"keywords.name CONTAINS[c] %@", self.searchString]; But that doesn't make any difference in the case sensitivity of the matching. Is there a way to do this case-insensitive matching using just a plain predicate? Or will I need to implement some sort of custom accessor on the keyword class, e.g. write a lowercaseName method and match against a lowercased version of the search string instead? Addendum: After further exploration, the workaround of adding a custom accessor works OK for manual use of NSPredicate, but does not work at all when using NSFetchRequest with Core Data, which only works when querying attributes defined in the Core Data model.

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  • NSTimer as a self-targeting ivar.

    - by Matt Wilding
    I have come across an awkward situation where I would like to have a class with an NSTimer instance variable that repeatedly calls a method of the class as long as the class is alive. For illustration purposes, it might look like this: // .h @interface MyClock : NSObject { NSTimer* _myTimer; } - (void)timerTick; @end - // .m @implementation MyClock - (id)init { self = [super init]; if (self) { _myTimer = [[NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(timerTick) userInfo:nil repeats:NO] retain]; } return self; } - (void)dealloc { [_myTimer invalidate]; [_myTImer release]; [super dealloc]; } - (void)timerTick { // Do something fantastic. } @end That's what I want. I don't want to to have to expose an interface on my class to start and stop the internal timer, I just want it to run while the class exists. Seems simple enough. But the problem is that NSTimer retains its target. That means that as long as that timer is active, it is keeping the class from being dealloc'd by normal memory management methods because the timer has retained it. Manually adjusting the retain count is out of the question. This behavior of NSTimer seems like it would make it difficult to ever have a repeating timer as an ivar, because I can't think of a time when an ivar should retain its owning class. This leaves me with the unpleasant duty of coming up with some method of providing an interface on MyClock that allows users of the class to control when the timer is started and stopped. Besides adding unneeded complexity, this is annoying because having one owner of an instance of the class invalidate the timer could step on the toes of another owner who is counting on it to keep running. I could implement my own pseudo-retain-count-system for keeping the timer running but, ...seriously? This is way to much work for such a simple concept. Any solution I can think of feels hacky. I ended up writing a wrapper for NSTimer that behaves exactly like a normal NSTimer, but doesn't retain its target. I don't like it, and I would appreciate any insight.

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