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  • Using Mapkit to create a local searchable Map

    - by Digital D
    Using MapKit as a base, I'm planning on adding a map to a project with 'local search' capabilities. I think 'local search' describes the feature I want to design into the map. Here is my vision. The map is displayed on the bottom half of a view. The user's current location is highlighted by default. When the user pushes the 'search' button annotation pins drop onto the map. The search is programmatically fixed to a certain item....for example supermarkets. So supermarkets in a 5 mile radius of the user's current location will populate the map. How would I add this local search feature to the already amazing MapKit? I've learned an incredible amount as a new developer in the last few months, and look forward to learning googles...correction googols more. Thanks in anticipation.

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  • IPhone OS 4.0 - Beta 3 - setContentURL on MPMoviePlayerViewController crashing the App

    - by Thom
    Hi Everyone. I had this issue, with the beta2 and I thought the beta3 was going to solve it, but I'm starting to think that I'm doing something wrong. I have a MPMoviePlayerViewController playing a video and when the video ends I'm trying to change the video for another like this: [moviePlayerViewController.moviePlayer setContentURL:newVideoURL]; The app crashes when it reaches this point. Any help/advice welcome :) Thanks Thomas

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  • How can UISearchDisplayController autorelease cause crash in a different view controller?

    - by Tofrizer
    Hi, I have two view controllers A and B. From A, I navigate to view controller B as follows: // in View Controller A // navigateToB method -(void) navigateToB { BViewController *bViewController = [[BViewController alloc] initWithNibName: @"BView" bundle:nil]; bViewController.bProperty1 = SOME_STRING_CONSTANT; bViewController.title = @"A TITLE OF A VC's CHOOSING"; [self.navigationController pushViewController: bViewController animated:YES]; [bViewController release]; //<----- releasing 0x406c1e0 } In BViewController, the property bPropery1 is defined with copy as below (note, B also contains UITableView and other properties): @property (nonatomic, copy) NSString *bProperty1; Everything appeared to work fine when navigating back and forth between A and B. That is until I added a UISearchDisplayController to the table view contained in BViewController. Now when I navigate out of B, back to A, the app crashes. Stack trace shows what looks the search display controller being autoreleased at time of crash: #0 0x009663a7 in ___forwarding___ #1 0x009426c2 in __forwarding_prep_0___ #2 0x018c8539 in -[UISearchDisplayController _destroyManagedTableView] #3 0x018c8ea4 in -[UISearchDisplayController dealloc] #4 0x00285ce5 in NSPopAutoreleasePool NSZombies shows: -[BViewController respondsToSelector:]: message sent to deallocated instance 0x406c1e0 And malloc history on this points to the bViewController already released in A's navigateToB method above: Call [2] [arg=132]: thread_a065e720 |start ... <snip> ..._sendActionsForEvents:withEvent:] | -[UIControl sendAction:to:forEvent:] | - [UIApplication sendAction:to:from:forEvent:] | -[**AViewController navigateToB**] | +[NSObject alloc] | +[NSObject allocWithZone:] | _internal_class_createInstance | _internal_class_createInstanceFromZone | calloc | malloc_zone_calloc Can someone please give me any ideas on what is happening here? In navigateToB method, once the bViewController is released (after pushViewController), that's should be it for bViewController. Nothing else even knows about it as it is local to the navigateToB method block and it has been released. When navigating from B back to A, nothing is invoked in viewDidLoad, viewWillAppear etc that will re-enter navigateToB. It looks like somehow search display controller has a reference to something in my AViewController and so as it is autoreleased it is taking this "something" down with it but I cannot understand how this is possible, especially as I'm using copy to pass data between A and B. I'm going potty over this. I'm sure this is my mistake somewhere and so I turn to you, Stack Overflow legends for any words of wisdom or advice on how to resolve this. Many Thanks.

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  • iPhone: understanding field crash reports: unrecognized selector?

    - by quixoto
    Hi all, A user of my app out in the field seems to having bad crash-at-app-start issues. I got him to send me the .crash files from his PC. After "symbolicating" them according to this article, I get what looks from the stack like a unrecognized selector fail. But the top line of code corresponding to my process is an unambiguous message send that gets executed hundreds of times without issue in my app normally. Needless to say, I never repro this issue myself. Can the crash report lie? Could this stack indicate anything besides unrecognized selector? Thanks for any insight. Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000, 0x00000000 Crashed Thread: 0 Thread 0 Crashed: 0 libSystem.B.dylib 0x000790a0 __kill + 8 1 libSystem.B.dylib 0x00079090 kill + 4 2 libSystem.B.dylib 0x00079082 raise + 10 3 libSystem.B.dylib 0x0008d20a abort + 50 4 libstdc++.6.dylib 0x00044a1c __gnu_cxx::__verbose_terminate_handler() + 376 5 libobjc.A.dylib 0x000057c4 _objc_terminate + 104 6 libstdc++.6.dylib 0x00042dee __cxxabiv1::__terminate(void (*)()) + 46 7 libstdc++.6.dylib 0x00042e42 std::terminate() + 10 8 libstdc++.6.dylib 0x00042f12 __cxa_throw + 78 9 libobjc.A.dylib 0x000046a4 objc_exception_throw + 64 10 CoreFoundation 0x00094174 -[NSObject doesNotRecognizeSelector:] + 108 11 CoreFoundation 0x00093afa ___forwarding___ + 482 12 CoreFoundation 0x000306c8 _CF_forwarding_prep_0 + 40 13 MyAppProcess 0x000147c6 -[ImageLoader imageSmallForColor:style:] (ImageLoader.m:180) .... /* many more frames... */

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  • NSTableView Drag and Drop not working

    - by macatomy
    Hi, I'm trying to set up very basic drag and drop for my NSTableView. The table view has a single column (with a custom cell). The column is bound to an NSArrayController, and the array controller's content array is bound to an NSArray on my controller object. The data displays fine in the table. I connected the dataSource and delegate outlets of the table view to my controller object, and then implemented these methods: - (BOOL)tableView:(NSTableView *)aTableView writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard *)pboard { NSLog(@"dragging"); return YES; } - (NSDragOperation)tableView:(NSTableView*)tv validateDrop:(id <NSDraggingInfo>)info proposedRow:(NSInteger)row proposedDropOperation:(NSTableViewDropOperation)op { return NSDragOperationEvery; } - (BOOL)tableView:(NSTableView *)aTableView acceptDrop:(id <NSDraggingInfo>)info row:(NSInteger)row dropOperation:(NSTableViewDropOperation)operation { return YES; } I also registered the drag types in -awakeFromNib: #define MyDragType @"MyDragType" - (void)awakeFromNib { [super awakeFromNib]; [_myTable registerForDraggedTypes:[NSArray arrayWithObjects:MyDragType, nil]]; } The problem is that the -tableView:writeRowsWithIndexes:toPasteboard: method is never called. I've looked at a bunch of examples and I can't figure out anything I'm doing wrong. Could the problem be that I'm using a custom cell? Is there something I'm supposed to override in the cell subclass to enable this functionality? EDIT: Confirmed. Switching the custom cell for a regular NSTextFieldCell made dragging work. Now, how do I make drag and drop work with my custom cell?

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  • Loading animation Memory leak

    - by Ayaz Alavi
    Hi, I have written network class that is managing all network calls for my application. There are two methods showLoadingAnimationView and hideLoadingAnimationView that will show UIActivityIndicatorView in a view over my current viewcontroller with fade background. I am getting memory leaks somewhere on these two methods. Here is the code -(void)showLoadingAnimationView { textmeAppDelegate *textme = (textmeAppDelegate *)[[UIApplication sharedApplication] delegate]; [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES]; if(wrapperLoading != nil) { [wrapperLoading release]; } wrapperLoading = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 480.0)]; wrapperLoading.backgroundColor = [UIColor clearColor]; wrapperLoading.alpha = 0.8; UIView *_loadingBG = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 480.0)]; _loadingBG.backgroundColor = [UIColor blackColor]; _loadingBG.alpha = 0.4; circlingWheel = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; CGRect wheelFrame = circlingWheel.frame; circlingWheel.frame = CGRectMake(((320.0 - wheelFrame.size.width) / 2.0), ((480.0 - wheelFrame.size.height) / 2.0), wheelFrame.size.width, wheelFrame.size.height); [wrapperLoading addSubview:_loadingBG]; [wrapperLoading addSubview:circlingWheel]; [circlingWheel startAnimating]; [textme.window addSubview:wrapperLoading]; [_loadingBG release]; [circlingWheel release]; } -(void)hideLoadingAnimationView { [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO]; wrapperLoading.alpha = 0.0; [self.wrapperLoading removeFromSuperview]; //[NSTimer scheduledTimerWithTimeInterval:0.8 target:wrapperLoading selector:@selector(removeFromSuperview) userInfo:nil repeats:NO]; } Here is how I am calling these two methods [NSThread detachNewThreadSelector:@selector(showLoadingAnimationView) toTarget:self withObject:nil]; and then somewhere later in the code i am using following function call to hide animation. [self hideLoadingAnimationView]; I am getting memory leaks when I call showLoadingAnimationView function. Anything wrong in the code or is there any better technique to show loading animation when we do network calls?

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  • iPhone: Using plist to populate a grouped table

    - by Jack Griffiths
    Hi there, I was wanting to use a plist to populate my grouped table. I've had a look at the DrillDownSave sample project, and I'm still none-the-wiser. Although, I did learn that I could store hierarchies and suchlike in there. So here's the questions: How can I use my plist to add new items to my grouped table? I'm currently feeding the table with an array, and I've noticed that an array isn't going to be the best thing for me. When a user taps on an item in the plist, how can I push the view to the corresponding item? In other words, how can I push the view based on the selected row (which was generated by the plist) to it's next "view"? If that makes any sense, please reply. Thanks, Jack.

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  • Problem with playing a sound when a button is clicked.

    - by iSharreth
    in my code: import "MyViewController.h" import (IBAction)playSound{ AVAudioPlayer *myExampleSound; NSString *myExamplePath = [[NSBundle mainBundle] pathForResource:@"myaudiofile" ofType:@"caf"]; myExampleSound =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:myExamplePath] error:NULL]; myExampleSound.delegate = self; [myExampleSound play]; } But it is showing a warning that Class MyViewController does not implement AVAudioplayerDelegate. Anyone please help. I had included the AVFoundation.Framework.

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  • Core Data (NSFetchedResultsController) displaying one row per section

    - by Urizen
    I have a CoreData application which uses NSFetchedResultsController. NSFetchedResultsController is useful in that it allows me to access the fetched objects more easily etc. but I find that I have problems with the following: I get a crash when I display a single row for each section (irrespective of the number of actual rows present) as a summary of the information in that section (e.g. showing a statistical analysis of the data contained in the fetched rows for that section). I understand that the NSFetchedResultsControllerDelegatemethods have to agree with the number of rows reported per section by the UITableView Delegate method but I would like to be able to fetch all of the records for each section without necessarily displaying each of the rows. The above causes me inconsistency crashes, when I try to insert or delete data for a section, which reports that the number of rows for each section is not as it should be given the number of insertions/deletions. Is there any way I can do what I'm trying to achieve? Thanks for any help.

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  • How set accessory type when tabel view is enbled to editing?

    - by Madan Mohan
    Hi Guys, I am using the UITableView properties to edit it. theTableView.editing = YES; theTableView.allowsSelectionDuringEditing = YES; It is working fine, the row is selected and I am getting into the next controller but I need to display the the accessoryType in the row. I am using below line for that but even though it is not working. Is there any property or any thing missing to display the indiactor. cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; I am using the below code for table view. theTableView = [[UITableView alloc] initWithFrame:tableRect style:UITableViewStyleGrouped]; theTableView.editing = YES; theTableView.allowsSelectionDuringEditing = YES; theTableView.delegate = self; theTableView.dataSource = self; theTableView.scrollEnabled=YES; theTableView.separatorColor = [UIColor lightGrayColor]; theTableView.autoresizingMask=YES; theTableView.allowsSelection=YES; theTableView.sectionHeaderHeight=5; theTableView.sectionFooterHeight=5; [myView addSubview:theTableView]; Please help me. THank You, Madan Mohan

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  • Why I can't update my UIImageView?

    - by Tattat
    I make my own UIImageView, like this: @interface MyImageView : UIImageView{ } And I have the initWithFrame like this: - (void)initWithFrame{ UIImage *img = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"myImage" ofType:@"png"]]; CGRect cropRect = CGRectMake(175, 0, 175, 175); CGImageRef imageRef = CGImageCreateWithImageInRect([img CGImage], cropRect); self = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 175, 175)]; self.image = [UIImage imageWithCGImage:imageRef]; [self addSubview:imageView]; CGImageRelease(imageRef); } I want to change the image when the user touchesBegin, so I have something like this: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UIImage *img = [UIImage imageWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"myImage2" ofType:@"png"]]; CGRect cropRect = CGRectMake(0, 0, 175, 175); CGImageRef imageRef = CGImageCreateWithImageInRect([img CGImage], cropRect); self = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 175, 175)]; [self setImage:[UIImage imageWithCGImage:imageRef]]; CGImageRelease(imageRef); } I find that I can't change the image. So, I add a line [self addSubview:imageView]; in the touchesBegan method, that's work. But I have no idea on why I can't change the image from the touchesBegan, thz.

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  • is there a way to show Uitableviewcell selection on limited frame?

    - by Rahul Vyas
    i have a uitableview cell added some labels something like this - (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]; UIImage* myImage = [UIImage imageNamed:@"AccessoryForDealsMain.png"]; UIImageView *MyimageView = [[UIImageView alloc] initWithImage:myImage]; MyimageView.contentMode=UIViewContentModeScaleToFill; cell.accessoryView=MyimageView; [MyimageView release]; UILabel *BluePatti = [[UILabel alloc] init]; BluePatti.frame=CGRectMake(0,0,4,44); BluePatti.backgroundColor = BLUEPATTI;//[UIColor blueColor]; UILabel *BlackLine = [[UILabel alloc] init]; BlackLine.frame=CGRectMake(3,0,1, 45); BlackLine.backgroundColor = BLACK_LINE; [BluePatti addSubview:BlackLine]; [BlackLine release]; [cell.contentView addSubview:BluePatti]; [BluePatti release]; UILabel *Seperator = [[UILabel alloc] initWithFrame:CGRectZero]; Seperator.backgroundColor = [UIColor colorWithRed:234/256.0 green:234/256.0 blue:234/256.0 alpha:1.0]; //[UIColor lightGrayColor]; Seperator.frame = CGRectMake(4,43,316,1); [cell.contentView addSubview:Seperator]; [Seperator release]; } if(indexPath.section==5) { cell.textLabel.text=[self.GenderCellData objectAtIndex:indexPath.row]; cell.textLabel.textColor=CELL_TEXT_COLOR; cell.textLabel.font=CELL_FONT; } else { cell.textLabel.text=@"Cells"; cell.textLabel.font=CELL_FONT; } return cell; } now when i touch cell it shows blue selection above all subviews.How do i change selection frame and colour?

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  • To store images from UIGetScreenImage() in NSMutable Array

    - by sujyanarayan
    Hi, I'm getting images from UIGetScreenImage() and storing directly in mutable array like:- image = [UIImage imageWithScreenContents]; [array addObject:image]; [image release]; I've set this code in timer so I cant use UIImagePNGRepresentation() to store as NSData as it reduces the performance. I want to use this array directly after sometime i.e after capturing 1000 images in 100 seconds. When I use the code below:- UIImage *im = [[UIImage alloc] init]; im = [array objectAtIndex:i]; UIImageWriteToSavedPhotosAlbum(im, nil, nil, nil); the application crashes. And I dont want to use UIImagePNG or JPGRepresentation() in timer as it reduces performance. My problem is how to use this array so that it is converted into image. If anybody has idea related to it please share with me. Thanks in Advance.

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  • Dismissing a modal view in horizontal orientation?

    - by Sheehan Alam
    I have a modal view that is presented and dismissed fine when my device is in vertical orientation. I have problems when my modal view is presented in the vertical orientation, but dismissed in horizontal orientation. The entire app switches back to vertical orientation automatically. How can I ensure that if I am in horizontal orientation, the view should dismiss properly?

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  • Adding libraries to a project in xcode - symbols not found

    - by kudorgyozo
    I am trying to make an iphone app in xcode that uses pjsip. The problem is I don't know how to link the libraries. I have the ARM version of the libraries in this folder in mac os x. /Users/kudorgyozo/pjsip_iphone In Xcode: I have specified the library and header search paths like this: for includes: /Users/kudorgyozo/pjsip_iphone/pjlib/include /Users/kudorgyozo/pjsip_iphone/pjlib-util/include /Users/kudorgyozo/pjsip_iphone/pjmedia/include /Users/kudorgyozo/pjsip_iphone/pjnath/include /Users/kudorgyozo/pjsip_iphone/pjsip/include for libraries: /Users/kudorgyozo/pjsip_iphone/pjlib/lib /Users/kudorgyozo/pjsip_iphone/pjlib-util/lib /Users/kudorgyozo/pjsip_iphone/pjmedia/lib /Users/kudorgyozo/pjsip_iphone/pjnath/lib /Users/kudorgyozo/pjsip_iphone/pjsip/lib and then using the "Other linker flags" : -lpj-arm-apple-darwin9 -lpjlib-util-arm-apple-darwin9 -lpjmedia-arm-apple-darwin9 -lpjmedia-audiodev-arm-apple-darwin9 -lpjmedia-codec-arm-apple-darwin9 -lpjsdp-arm-apple-darwin9 -lpjnath-arm-apple-darwin9 -lpjsip-arm-apple-darwin9 -lpjsip-simple-arm-apple-darwin9 -lpjsip-ua-arm-apple-darwin9 -lpjsua-arm-apple-darwin9 Is this OK like this? Because it gives me symbol(s) not found errors. I think no symbol is found from the "included" libraries. I don't know what is wrong i'm just beginning to understand how building an app works under linux based systems i've only done programming in C# before.

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  • Remove UIViewController from UIScrollView?

    - by tobi
    Hi, i add different View with (setPageID) to a ScrollView, but know i get a Memory problem on rotaion and i want to remove the actualy not showed view... how can i do this or how can i remove the memory problem? Thanks!!! - (void)setPageID:(int)page { if (page < 0) return; if (page >= self.listOfItems.count) return; CGFloat cx = 0; ScrollingViewStep *controller = [viewControllers objectAtIndex:page]; if ((NSNull *)controller == [NSNull null]) { controller = [[ScrollingViewStep alloc] init]; [viewControllers replaceObjectAtIndex:page withObject:controller]; [controller release]; } if (nil == controller.view.superview) { if([[UIDevice currentDevice] orientation] == UIDeviceOrientationPortrait || [[UIDevice currentDevice] orientation] == UIDeviceOrientationPortraitUpsideDown) { cx = 768.0 * page; controller.view.frame = CGRectMake(cx, 0.0 , 768.0f, 926.0f); } else { cx = 1024.0 * page; controller.view.frame = CGRectMake(cx, 0.0 , 1024.0f, 670.0f); } [controller setView:ItemID PageID:page Text:[[self.listOfItems objectAtIndex:page] objectForKey:@"step"]]; [scrollView addSubview:controller.view]; } } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { CGFloat cx2 = 0; for (int i = 0; i < [self.viewControllers count]; i++) { ScrollingViewStep *viewController = [self.viewControllers objectAtIndex:i]; if ((NSNull *)viewController != [NSNull null]) { if([[UIDevice currentDevice] orientation] == UIDeviceOrientationPortrait || [[UIDevice currentDevice] orientation] == UIDeviceOrientationPortraitUpsideDown) { cx2 = 768.0 * i; viewController.view.frame = CGRectMake(cx2, 0.0 , 768.0f, 926.0f); [viewController repos]; } else { cx2 = 1024.0 * i; viewController.view.frame = CGRectMake(cx2, 0.0 , 1024.0f, 670.0f); [viewController repos]; } } } if((interfaceOrientation == UIInterfaceOrientationPortrait) || (interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)) { CGRect frame = scrollView.frame; frame.origin.x = 768 * currentPageInScrollview; frame.origin.y = 0; [scrollView scrollRectToVisible:frame animated:NO]; } else { CGRect frame = scrollView.frame; frame.origin.x = 1024 * currentPageInScrollview; [scrollView scrollRectToVisible:frame animated:NO]; } pageControlIsChangingPage = YES; return YES; } - (void)didReceiveMemoryWarning { int currentPage = currentPageInScrollview; NSLog(@"MEMORY"); // unload the views+controllers which are no longer visible UIViewController *l; for (int i = 0; i < [self.viewControllers count]; i++) { ScrollingViewStep* viewController = [self.viewControllers objectAtIndex:i]; if((NSNull *)viewController != [NSNull null]) { if(i < currentPage-1 || i > currentPage+1) { [self.viewControllers replaceObjectAtIndex:i withObject:[NSNull null]]; } } } [super didReceiveMemoryWarning]; }

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  • Can't find applicationSupportDirectory?

    - by Frost Li
    There is always a pre-written function at AppDelegate: (NSString *)applicationSupportDirectory { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES); NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : NSTemporaryDirectory(); return [basePath stringByAppendingPathComponent:@"SyncFile"]; } However, I can't call this method outside this class: id _appDelegate = (SyncFile_AppDelegate *)[[NSApplication sharedApplication] delegate]; NSLog(@"%@", [_appDelegate applicationSupportDirectory]); The compiler warned me that it can't find method applicationSupportDirectory... Does anyone know what's wrong with my code? Thank you very much!

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  • [three20] dynamically add Items to TTLauncher

    - by choise
    Hi guys, in my app i got a TTLauncher Object with some TTLauncherItems in it. Now i want to add some Items dynamically inside my App by pressing a button. Is there a simple way to do that or do i have to create my own methods? In the original facebook application there is already something like that implemented. (You can add your Friends to the Launcher) If not, what would be the best thing to do something like that? Store all "extra items" in a plist oder even in a database and query them, each time TTLauncher object is initialized? Thanks for help :)

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  • Faking a dynamic schema in Core Data?

    - by Gouldsc
    From reading the Apple Docs on Core Data, I've learned that you should not use Core Data when you need a dynamic schema. If I wanted to provide the user the ability to create their own properties, in a core data model would it work if I created some "dummy" attributes like "custom decimal 1", "custom decimal 2", "custom text 1", "custom text 2" etc that the user could name and use for their own purposes? Obviously this won't work for relationships, but for simple properties it seems like a reasonable workaround. Will creating a bunch of dummy attributes on my entities that go unused by most users noticeably decrease performance for them? Have any of you tried something like this? Thanks!

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