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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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  • Sorting by dates (including nil) with NSFetchedResultsController

    - by glorifiedHacker
    In my NSFetchedResultsController, I set a sortDescriptor that sorts based on the date property of my managed objects. The problem that I have encountered (along with several others according to Google) is that nil values are sorted at the earliest end rather than the latest end of the date spectrum. I want my list to be sorted earliest, earlier, now, later, latest, nil. As I understand it, this sorting is done at the database level in SQLite and so I cannot construct my own compare: method to provide the sorting I want. I don't want to manually sort in memory, because I would have to give up all of the benefits of NSFetchedResultsController. I can't do compound sorting because the sectionNameKeyPaths are tightly coupled to the date ranges. I could write a routine that redirects indexPath requests so that section 0 in the results controller gets mapped to the last section of the tableView, but I fear that would add a lot of overhead, severely increase the complexity of my code, and be very, very error-prone. The latest idea that I am considering is to map all nil dates to the furthest future date that NSDate supports. My left brain hates this idea, as it feels more like a hack. It will also take a bit of work to implement, since checking for nil factors heavily into how I process dates in my app. I don't want to go this route without first checking for better options. Can anyone think of a better way to get around this problem?

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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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  • Get a image from a uiview

    - by Monobono
    Hi I want to perform a shrink animation on a UITableVIew. I experimented a bit and found out that the animation runs much faster when I shrink a UIImageView with an image of the current state of the tableview instead of shrinking the table view itself. I grabbed the image in a method in my main viewcontroller prior to the animation: UIGraphicsBeginImageContext(mainTableView.bounds.size); [resizeContainer.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); Works like a charm, at least almost. On very rare occasions I get weird graphic glitches, where the UIImage starts to overlap a toolbar that lies underneath it. I just want to make sure that I am getting the image in the right way. I am laking the necessary understand of GraphicContexts to be sure about it. To cut a long story short, is my code correct? Thx

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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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  • localization with core data

    - by Tristan
    Hi there, Does anyone have any recommendations with localization of core data? My application will have information that will sometimes be the same in both langauges, such as a person's photo, or different such as the person's biography. From what I understand, it's possible to localize the field names (http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/Articles/cdUsingMOM.html#//apple_ref/doc/uid/TP40005190-SW13), but what's the best course of action for field values? Thanks! Tristan

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  • Best way to change XIB files based on rotation?

    - by Graeme
    Hi, My app has so far just been a portrait-based application. However, I am adding landscape mode to a new version, but have found that my XIB files look shocking when rotated from portrait to landscape. Apparently I need to make a landscape version of each XIB and use some code to change with XIB launches based on what rotation occurs. Am I right? If so, where do I go from here? Are there any Apple sample apps utilising this code? FYI - My XIB files just have text in them. Thanks.

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  • can not set the bool value of app setting

    - by user262325
    Hello everyone I use the codes below to read and write a bool value from my application: -(void)SaveAppSetting; {     NSUserDefaults *defaults=[NSUserDefaults standardUserDefaults];     bool b=true;     [defaults setBool:b forKey:@"AnyKey"]; [defaults synchronize]; } -(void)LoadAppSetting; {     NSUserDefaults *defaults=[NSUserDefaults standardUserDefaults];     bool b=[defaults boolForKey: @"AnyKey"] ; } I found that "LoadAppSetting" worked well, it could get the correct value of item with key "AnyKey". The function "SaveAppSetting" looked like no function, it reported no error, but it can not change value of the item with key "AnyKey". "AnyKey" setting in Setting bundle is item Dictionary Type String PSToggleSwitchSpecifier Title String AnyKey's Title Key String AnyKey DefaultValue Boolean Checked Is there any person met the same problem? Thanks interdev

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  • Detecting taps on a UIWebView

    - by dubbeat
    Hi, I'm trying to find a way to detect a double tap on a UIWebview. I want to use this action to close it. I however can't find and methods in the documentation for UIWebview taps. Whats the best to add taps to a uiwebview? I tried a tutorial here http://mithin.in/2009/08/26/detecting-taps-and-events-on-uiwebview-the-right-way/ But I don't know how to change my UIWindow to a tap detecting window. Does the above link seem like the best approach or could you suggest another way to remove my WebView?

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  • How to use NSObject to URLs with three20 properly

    - by Frank
    Basically i map my controllers to accept the address class to be passed into the listingpage controller. Which is done here: [map from:@"tt://listingPage/(initWithResult:)" toViewController:[ListingPageController class]]; [map from:[Address class] name:@"result" toURL:@"tt://listingPage/(initWithResult:)"]; This url is being used in my table item which I am has been invoked here: for (Address *result in [(id<SearchResultsModel>)self.model results]) { NSString* url = [result URLValueWithName:@"result"]; TTTableImageItem* tii = [TTTableMessageItem itemWithTitle:[result addressText] caption:[result addressText] text:[result subText] imageURL:[result image] URL:url]; [self.items addObject:tii]; } My app crashes, I am not sure why, seems to be getting an invalidate view. any help would be much appreciated.

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  • Custom UITableViewCell changing indexPath While Scrolling ?

    - by Chris
    I have a custom UITableViewCell which I created in Interface Builder. I am successfully Dequeuing cells, but as I scroll, the cells appear to begin calling different indexPaths. In this example, I am feeding the current indexPath.section and indexPath.row into the customCellLabel. As I scroll the table up and down, some of the cells will change. The numbers can be all over the place, but the cells are not skipping around visually. If I comment out the if(cell==nil), then the problem goes away. If I use a standard cell, the problem goes away. Ideas why this might be happening? // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"CalendarEventCell"]; if (cell == nil) { NSLog(@"Creating New Cell !!!!!"); NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CalendarEventCell" owner:self options:nil]; cell = (UITableViewCell *)[nib objectAtIndex:0]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; } // Set up the cell... [customCellLabel setText:[NSString stringWithFormat:@"%d - %d",indexPath.section, indexPath.row]]; return cell; }

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  • UISearchDisplayController - how to display search result with only by scope button selected but empt

    - by billibala
    The UISearchDisplayController is very handy and implementing search is pretty straightforward. However, I bump into problem when, in my app, I want to display search result with empty search string but selected scope button. It seems like it's a must to enter some search string in order to get the search result table being initialized and displayed. Is there any ways to display search result immediately after user has picked a scope but not entered search word yet? Thanks Bill

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  • Modal Tab Bar ViewController

    - by Kevin Sylvestre
    I need to present a modal tab bar controller using interface builder. I'd like to be able to specify and design the tab bar controller in a InfoViewController.xib file, then present it from a variety of locations within the application using something like: UIViewController *vc = [InfoViewController create]; [self presentModalViewController:vc animated:YES];

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  • UISlider to control AVAudioPlayer

    - by David Pollak
    hi everyone, I'm trying to implement a little function in my app. I am currently playing sounds as AVAudioPlayers and that works fine. What I would like to add is to control the sound's position (currentTime) with an UISlider: is there a simple way to do it ? I looked at an Apple project but it was quite messy....have you got samples or suggestions ? Thanks to everyone in advance

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  • How to serialize object containing NSData?

    - by AO
    I'm trying to serialize an object containing a number of data fields...where one of the fields is of datatype NSData which won't serialize. I've followed instructions at http://www.isolated.se but my code (see below) results in the error "[NSConcreteData data]: unrecognized selector sent to instance...". How do I serialize my object? Header file: @interface Donkey : NSObject<NSCoding> { NSString* s; NSData* d; } @property (nonatomic, retain) NSString* s; @property (nonatomic, retain) NSData* d; - (NSData*) serialize; @end Implementation file: @implementation Donkey @synthesize s, d; static NSString* const KEY_S = @"string"; static NSString* const KEY_D = @"data"; - (void) encodeWithCoder:(NSCoder*)coder { [coder encodeObject:self.s forKey:KEY_S]; [coder encodeObject:self.d forKey:KEY_D]; } - (id) initWithCoder:(NSCoder*)coder; { if(self = [super init]) { self.s = [coder decodeObjectForKey:KEY_STRING]; self.d [coder decodeObjectForKey:KEY_DATA]; } return self; } - (NSData*) serialize { return [NSKeyedArchiver archivedDataWithRootObject:self]; } @end

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  • How easy is it to hack a plist file in an app store app?

    - by user249488
    Don't worry, I'm not trying to hack someone else's app, if that's what you're thinking =). I want to have 2 versions of my app, a free version and a deluxe version. My plan was to use an in-app purchase to enable the deluxe version by setting a boolean value in the plist file. My question is: is this secure or is it easily circumvented? And if it is not secure, can someone suggest a simple alternative? I don't want to download additional content, I would rather keep all of the functionality within the app and enable it somehow.

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  • UIWebView memory management

    - by wolfrevo
    Hello, I have a problem with memory management. I am developing an application that makes heavy use of UIWebView. This app generates dynamically lots of UIWebViews while loading content from my server. Some of these UIWebViews are quite large and have a lot of pictures. If I use instruments to detect leaks, I do not detect any. However, lots of objects are allocated and I suspect that has to do with the UIWebViews. When the webviews release because no longer needed, it appears that not all memory is released. I mean, after a request to my server the app creates an UITableView and many webviews (instruments say about 8Mb). When user tap back, all of them are released but memory usage only decrements about 2-3 Mb, and after 5-10 minutes using the app it crashes. Am I missing something? Anyone know what could be happening? Thank you!

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  • conceptual question : what do performSelectorOnMainThread do?

    - by hib
    Hello all, I just come across this strange situation . I was using the technique of lazy image loading from apple examples . when I was used the class in my application it gave me topic to learn but don't what was actually happening there . So here goes the scenario : I think everybody has seen the apple lazytableimagesloading . I was reloading my table on finishing the parsing of data : - (void)didFinishParsing:(NSMutableArray *)appList { self.upcomingArray = [NSMutableArray arrayWithArray:loadedApps]; // we are finished with the queue and our ParseOperation [self.upcomingTableView reloadData]; self.queue = nil; // we are finished with the queue and our ParseOperation } but as a result the the connection was not starting and images were not loading . when I completely copy the lazyimageloading and I replaced the above code with the following code it works fine - (void)didFinishParsing:(NSMutableArray *)appList { [self performSelectorOnMainThread:@selector(handleLoadedApps:) withObject:appList waitUntilDone:NO]; self.queue = nil; // we are finished with the queue and our ParseOperation } So I want to know what is the concept behind this . Please let me know if you can not understand the question or details are not enough because I desperately want to know why it is like this ?

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  • UISearch bar case sensitive off ? ? ?

    - by Flodev03
    hi all, in a table view i have set a UISearchBar set the delegate and add the protocol. When user tap a word everything is ok exept that the search of "tennis" and "Tennis" is not the same. How can i make the search bar a non case sensitive UISearchBar, i have search a lot please help it would be great thanks to all here is my code where i think evrything happens : thanks to all !!!! - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText { [tableData removeAllObjects];// remove all data that belongs to previous search if([searchText isEqualToString:@""]||searchText==nil){ [myTableView reloadData]; return; } NSInteger counter = 0; for(NSString *name in dataSource) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init]; NSRange r = [name rangeOfString:searchText]; if(r.location != NSNotFound) [tableData addObject:name]; counter++; [pool release]; } [myTableView reloadData]; }

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  • setText depreceted

    - by Gema
    Hi there, i saw your comment about getting rid of the setText deprecated error, and using cell.textLabel.text it works perfectly for OS 4.0 but it doesn't work on 3.1.3, the app crashes at the loading screen, have you got any ideas? Hope to hear back Gemma

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  • New CATransform3DMakeRotation deletes old transformation?!

    - by david
    I added a CATransform3DMakeRotation to a layer. When I add another one it deletes the old one? The first one: [UIView beginAnimations:@"rotaty" context:nil]; [UIView setAnimationDuration:0.5]; [UIView setAnimationDelegate:self]; CGAffineTransform transform = CGAffineTransformMakeRotation(-3.14); kuvert.transform = CGAffineTransformRotate(transform, DegreesToRadians(134)); kuvert.center = CGPointMake(kuvert.center.x-70, kuvert.center.y+100); [UIView commitAnimations]; and the second one: CABasicAnimation *topAnim = [CABasicAnimation animationWithKeyPath:@"transform"]; topAnim.duration=1; topAnim.repeatCount=0; topAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(0.0, 0, 0, 0)]; float f = DegreesToRadians(180); // -M_PI/1; topAnim.toValue=[NSValue valueWithCATransform3D:CATransform3DMakeRotation(f, 0,1, 0)]; topAnim.delegate = self; topAnim.removedOnCompletion = NO; topAnim.fillMode = kCAFillModeBoth; [topAnim setValue:@"flippy" forKey:@"AnimationName"]; [[KuvertLasche layer] addAnimation:topAnim forKey:@"flippy"]; The second one resets the view and applies itself after that. How do I fix this??

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  • What is common case for @dynamic usage ?

    - by Forrest
    There is previous post about difference of @synthesize and @dynamic. I wanna to know more about dynamic from the perspective of how to use @dynamic usually. Usually we use @dynamic together with NSManagedObject // Movie.h @interface Movie : NSManagedObject { } @property (retain) NSString* title; @end // Movie.m @implementation Movie @dynamic title; @end Actually there are no generated getter/setter during compiler time according to understanding of @dynamic, so it is necessary to implement your own getter/setter. My question is that in this NSManagedObject case, what is the rough implementation of getter/setter in super class NSManagedObject ? Except above case, how many other cases to use @dynamic ? Thanks,

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  • ASIHTTPRequest - PostData but GET Method

    - by RyanJM
    Is there a way to see what request ASIHTTPRequest is making? My code is: ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url]; [request appendPostData:[data dataUsingEncoding:NSUTF8StringEncoding]]; [request setRequestMethod:@"GET"]; [request addRequestHeader:@"Content-Type" value:@"application/json"]; And I'm trying to duplicate: curl -X GET "http://www.myurl.com/_api/my/url" -H "Content-Type: application/json" -d {"api_key":"my_special_api_key_123"} The curl works fine, but I can't get the ASIHTTPRequest to work properly. Any ideas?

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  • Zoom on userLocation

    - by Marco
    Hello, how can I zoom the map on my userLocation automatically in my app? I have the following code to zomm in the map but i must zoom on the userLocation and the following code zooms always to africa? MKCoordinateRegion zoomIn = mapView.region; zoomIn.span.latitudeDelta *= 0.2; zoomIn.span.longitudeDelta *= 0.2; zoomIn.center.latitude = mapView.userLocation.location.coordinate.latitude; zoomIn.center.longitude = mapView.userLocation.location.coordinate.longitude; [mapView setRegion:zoomIn animated:YES];

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