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  • iPhone , core data, whether NSManagedObject use lazy load mechanism when it was create ?

    - by Robin
    Hi, all, I have use core data in app, I have definite a class that most like as follows: @interface Master : NSManagedObject { } @property (nonatomic, retain) NSSet* Details; .... the entity Master contains a property 'Details' that is relate to another table, this is typical Master-Details relationship, I trace the app , but I find a issue that the property 'Details' value was construct even it never be invoked ..... but I consider that the core data 'should' use some lazy mechanism to improve performance, or maybe I miss some configure step ? because the Master entity contains at least five 'Child' table properties , I have to consider this problem before use the core data .... any help ? thanks for your time!

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  • iPhone app distribution: What name will appear on the AppStore?

    - by Jack Griffiths
    Hi there, Is there a way to change the name that displays on the AppStore, rather than the name associated with the credit card/apple ID associated with the developer programme? For example, if my name on my credit card was foo, and the name on the apple ID was foo, but I actually want the name displayed on the AppStore (i.e. next to my App's name and details) to be bar. BTW: The programme is individual. Many thanks, Jack

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  • why my iphone device and simulator has different screen resolution?

    - by happyzone8
    i use itouch 4G has my device and i use simulator-4.2 i will just draw a rectangle as an example. i use Quartz-2d to draw - (void)drawRect:(CGRect)rect { // Get a graphics context, saving its state CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSaveGState(context); // Reset the transformation CGAffineTransform t0 = CGContextGetCTM(context); t0 = CGAffineTransformInvert(t0); CGContextConcatCTM(context,t0); // Draw a green rectangle CGContextBeginPath(context); CGContextSetRGBFillColor(context, 0,1,0,1); CGContextAddRect(context, CGRectMake(0,0,320,480)); CGContextClosePath(context); CGContextDrawPath(context,kCGPathFill); CGContextRestoreGState(context); } i run it in the simulator, the whole screen becomes green, then i run this on my device, only the quarter of the screen becomes green, in order to make the whole screen green on my device, i have to draw a larger rectangle CGContextAddRect(context, CGRectMake(0,0,640,960)); seem like my device has twice resolution than the simulator, how can i fix this?

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  • How to make RegexKitLite w/ iPhone SDK produce a list of all matches +/- and also return surrounding

    - by Matt
    I'd like to create a regular expression that will match and return based on the following criteria: 1) I have N search terms entered by a user 2) I have a body of text. 3) I want to return a list of all the occurrences of all the search terms entered by the user plus surrounding context. I think (\w+\W+){,4}(", ")(\W+\w+){,4} might work. 4) I don't know how to use RegexKitLite at all. Do I invoke a RegexKitLite class? or does it interface into NSString somehow?

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  • Safari on the iPhone & iPad gives colour feedback on touch, I want to stop this.

    - by Owen
    Clicking on an element which has a Javascript handler makes the element go have a 'grey overlay'. This is normally fine but I'm using event delegation to handle the touchdown events of many child elements. Because of the delegation the 'grey overlay' is appearing over the parent element and looks bad and confusing. I could attach event handlers to the individual elements to avoid the problem but this would be computationally very wasteful. I'd rather have some webkit css property that I can override to turn it off. I already have visual feedback in my app so the 'grey overlay' is not needed. Any ideas?

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  • iPhone: keep text looking good after scale transform applied?

    - by Greg Maletic
    I'm applying a scale transform to a UIView that draws a number. (The number is literally being drawn with drawInRect; no UILabel in sight.) The scale transform makes the view smaller by quite a bit...say, 80% smaller. The resulting number looks a little "chunky". Is there a way that I can keep my text looking nice and anti-aliased, the way it's supposed to look? Thanks.

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  • Getting memory leak at NSURL connection in Iphone sdk.

    - by monish
    Hi guys, Here Im getting leak at the NSURL connection in my libxml parser can anyone tell how to resolve it. The code where leak generates is: - (BOOL)parseWithLibXML2Parser { BOOL success = NO; ZohoAppDelegate *appDelegate = (ZohoAppDelegate*) [ [UIApplication sharedApplication] delegate]; NSString* curl; if ([cName length] == 0) { curl = @"https://invoice.zoho.com/api/view/settings/currencies?ticket="; curl = [curl stringByAppendingString:appDelegate.ticket]; curl = [curl stringByAppendingString:@"&apikey="]; curl = [curl stringByAppendingString:appDelegate.apiKey]; curl = [curl stringByReplacingOccurrencesOfString:@"\n" withString:@""]; } NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:curl]]; NSLog(@"the request parserWithLibXml2Parser %@",theRequest); NSURLConnection *con = [[[NSURLConnection alloc] initWithRequest:theRequest delegate:self] autorelease];//Memory leak generated here at this line of code. //self.connection = con; //[con release]; // This creates a context for "push" parsing in which chunks of data that are // not "well balanced" can be passed to the context for streaming parsing. // The handler structure defined above will be used for all the parsing. The // second argument, self, will be passed as user data to each of the SAX // handlers. The last three arguments are left blank to avoid creating a tree // in memory. _xmlParserContext = xmlCreatePushParserCtxt(&simpleSAXHandlerStruct, self, NULL, 0, NULL); if(con != nil) { do { [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]; } while (!_done && !self.error); } if(self.error) { //NSLog(@"parsing error"); [self.delegate parser:self encounteredError:nil]; } else { success = YES; } return success; } Anyone's help will be muck appreciated . Thank you, Monish.

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  • iPhone SDK: How to center map around a particular point?

    - by buzzappsoftware
    New to MapKit. Having problems centering map around a specified point. Here is the code. Not sure why this is not working. We are expecting to see a map centered around Cincinnati, OH. What we are seeing is the default google map of the world. Any help appreciated. / Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; CLLocationCoordinate2D mapCoords[2]; mapCoords[0].latitude = 39.144057; mapCoords[0].latitude = -84.505484; mapCoords[1].latitude = 39.142984; mapCoords[1].latitude = -84.502534; MKCoordinateSpan span; span.latitudeDelta = 0.2; span.longitudeDelta = 0.2; MKCoordinateRegion region; region.center = mapCoords[0]; region.span = span; [mapView setRegion:region animated:YES]; }

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  • How does undo/redo basically work on iPhone OS?

    - by mystify
    My app doesn't use Core Data yet. Is it true that I must use Core Data for undo/redo? And: How does the user do the undo/redo? I've never seen it in action, and never ever used it. Don't know how I should do it if I wanted to. There's no undo/redo button anywhere. Yet they say it has undo/redo. So how does the user trigger this?

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  • How to create a tabbar on clicking a row in table in iphone?

    - by Warrior
    My first view consist of table with 7 rows of data.When i click each row it should navigate to a view with tab bar with 4 tabitems .In this what is the proper approac of creating a tab bar. When should i create it.Should i create in didSelectRowAtIndexPath of the table in first view like this UITabBarController *tabbar=[[UITabBarController alloc] init]; Homepageview* vc1 = [[Homepageview alloc] initWithNibName:@"Homepageview" bundle:nil] ; vc1.tabBarItem.title=@"Home"; vc1.tabBarItem.image = [UIImage imageNamed:@"home.png"]; ShoppingView* vc2 = [[ShoppingView alloc] initWithNibName:@"ShoppingView" bundle:nil]; vc2.tabBarItem.title=@"Shopping"; vc2.tabBarItem.image = [UIImage imageNamed:@"shopping.png"]; Checkout* vc3 = [[Checkout alloc] initWithNibName:@"Checkout" bundle:nil] ; vc3.tabBarItem.title=@"Checkout"; vc3.tabBarItem.image = [UIImage imageNamed:@"checkout1.png"]; Settings *vc4=[[SlSettings alloc] initWithNibName:@"Settings" bundle:nil] ; vc4.tabBarItem.title=@"Settings"; vc4.tabBarItem.image = [UIImage imageNamed:@"setting1.png"]; tabbar.delegate = self; tabbar.viewControllers = [NSArray arrayWithObjects:vc1, vc2, vc3,vc4,nil]; //self.navigationItem.title=@"Snhopping list"; //[tabbar.selectedViewController viewDidAppear:YES]; [self.navigationController pushViewController:tabbar animated:YES]; [vc1 release]; [vc2 release]; [vc3 release]; [vc4 release]; [tabbar release]; Or is there any alternate to do it. If i do it by the above method , when i navigate from the home page view of tabbar to another view then i am not able to get tab bar.Please help me out.Thanks.

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  • iPhone SDK: Downloading large files from a server into the app bundle.

    - by Jessica
    Hi, I am building an app that plays multiple video files, But I would like to know How do you download a video file (100mb - 300mb) from a server into the application's bundle so it can later be locally referred to in code? The reason I want this type of a set up in my app is that I don't want the app binary to be made unnecessarily large due to including videos some users may not want. Also does this violate any of apple's terms? Also would it be simple to implement a progress view with this kind of set up and if so how? Any help is appreciated.

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  • Problem in Rendering images in UIImageView in iPhone programming.

    - by suse
    Hello, I've a UIViewController and a UIImageView, on UIImageView i want to flip between 2 images, which i'm not able to achieve. This is the code i've written, plz correct me if i'm wrong. UIViewController* VC = [[UIViewController alloc]init]; VC.view.backgroundColor = [UIColor redColor]; UIImageView* imgView = [[UIImageView alloc]initWithFrame:CGRectMake(0,0,320,400)]; [imgView setImage:[UIImage imageNamed:@"Image_A.jpg"]]; [VC.view addSubview:imgView]; sleep(2); [imgView setImage:[UIImage imageNamed:@"Image_B.jpg"]]; [VC.view addSubview:imgView]; [window addSubview:VC.view]; so when i execute this project, only Image_B is displayed on screen, while i want Image_A to be displayed then on sleep(2), Image_B has to be displayed. How would i make it possible?? plz guide me.. I'm struggling with this problem since 3days .. plz try to help me out... Thank You.

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  • iPhone: Waiting until selectrow animation finishes before pushing viewcontroller?

    - by Mike
    My code looks like this: NSIndexPath *ip = [NSIndexPath indexPathForRow:15 inSection:0]; [[self tableView] selectRowAtIndexPath:ip animated:YES scrollPosition:UITableViewScrollPositionMiddle]; // Pause needed here until animation finishes [[self navigationController] pushViewController:secondView animated:YES]; Right now it animates the scroll/selection of the row and pushes the view controller at the same time. What I would like it to do is wait until it finishes the scroll/selection and then push the view controller. Is there any possible way of doing this? Thanks

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  • wav stopped working with AudioServices on my iPhone app?

    - by user157733
    I have a wav file that was working fine. It is played using the AudioServices methods. Suddenly it stopped working. The weird thing is if i change he wav file to a different one that works. Any idea what is going on? The non working sound is slightly longer (still <10seconds) but it was originally working so I just can't figure it out. Any suggestions of what to try would be most appreciated. Thanks :-)

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  • How to remove segment at index at 0 of UISegmentcontrol in iphone?

    - by Warrior
    I am able to remove the segment at index 1,2,3 etc but not able to remove the segment at index 0 . [self readGroupFromDatabase]; NSLog(@"the current teble desc count value is %d",[tableDesc count]);---->0 if([tableDesc count]== 0){ [segemntedControl removeSegmentAtIndex:0 animated:NO]; } i am getting this error : *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (-1( or possibly larger)) beyond bounds (5)' Please help me out.Thanks.

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