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  • Storing and retrieving CGPoints inside NSMutableArray

    - by Matt Dice
    I've looked through countless questions on here and elsewhere and cannot for the life of me figure out what I'm doing wrong. I'm trying to store an array of CGPoints as NSValues inside of an NSMutableArray named points like so on the iPhone: NSValue *point = [NSValue valueWithCGPoint:firstTouch]; NSLog(@"NSValue *point = %@", point); [points addObject:point]; NSLOG OUTPUT NSValue *point = NSPoint: {120, 221} Everything is going smooth converting from the CGPoint to NSValue. But when I try to retrieve the point I get nothing. NSValue *getPoint = [points objectAtIndex:0]; CGPoint thePoint = [getPoint CGPointValue]; NSLog(@"Point = %@", NSStringFromCGPoint(thePoint)); NSLOG OUTPUT Point = {0, 0} The points should be the same but I'm getting a null result. For testing purposes this is happening in the touchesBegan method. Does anyone have any idea where I'm going wrong? Thanks in advance.

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  • Low memory with 640Kb of live bytes?

    - by Chiodo
    Hello, i've a problem with my application that need to display a lot of images and video. After running ObjectAlloc tool, i see that the live bytes is 640Kb and the overall memory is 31,54Mb when the application crash. In the organizer i get a "low memory" report so i guess the app crashed because low memory but the ObjectAllocation data don't make any sense to me... Any ideas? This is the Organizer crash log: Incident Identifier: CDCAF38C-CFFD-4316-9C4A-5C8E37794B49 CrashReporter Key: 65390aeb97b2b81076576c3e33b025feb5db9202 OS Version: iPhone OS 3.1.3 (7E18) Date: 2010-05-19 10:07:19 +0200 Free pages: 372 Wired pages: 12260 Purgeable pages: 0 Largest process: DTMobileIS Processes Name UUID Count resident pages ATreeTest <1d51c3a5fef8b747c3a1be9405bdd52a 1150 (jettisoned) (active) DTMobileIS <69c3fa96db2f29474d62964aa1a69bfa 3316 notification_pro <8a7725017106a28b545fd13ed58bf98c 68 mediaserverd <3d3800d6acfff050e4d0ed91cbe2467e 464 (jettisoned) syslogd <8eddddc00294d5615afded36ee3f1b62 56 (jettisoned) apsd <32070d91b216d806973c8f1b1d8077a4 173 SpringBoard <324939a437d1cca1fa4af72d9f5d0eba 2475 (jettisoned) (active) accessoryd <8f21c8b376d16e2ccb95ed6d21d8317a 99 (jettisoned) notification_pro <8a7725017106a28b545fd13ed58bf98c 64 ptpd 129 notifyd <591dd4dd804b4b8741f52335ea1fa4ab 64 CommCenter 167 configd <85efd41aceac34ccc0019df76623c7a9 294 fairplayd 91 mDNSResponder 101 lockdownd <80d2bd44c0bcca273d48ce52010f7e65 285 launchd 71 End

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  • UINavigation controller problem

    - by VansFannel
    Hello. I'm developing an iPhone application and I'm trying to do this: I want an application with tree views. The view shown first, doesn't have a navigation bar. If the user tap on a button, I need to open the second view with a navigation bar and a table view. The user can also add new items to the table view. If the user do so, the application will show the third view where the user can add fields (this view has also a navigation bar). It may seem simple, but for me it is not. I don't know how to use the UINavigationController and have not found yet a similar example for what I do (paragraph translated by google). UPDATE I don't know how where to put UINavigationController. How can I do that? Can I use a UIViewController to call a UINavigationController? Thank you.

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  • How i call NSObject method in UIViewController class method?

    - by Rajendra Bhole
    Hi,I am the beginner in iphone development. I develop an application in which i calling some GPS related information(method name is getGPSInformation{}) in clsGPS{} is an pure NSObject class.The code is as follows, import "clsGPS.h" -(void)getGPSInformation { locationManager = [[CLLocationManager alloc ] init]; locationManager.delegate = self; locationManager.distanceFilter = 5.0f; locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters; [locationManager startUpdatingLocation]; } I want the above method calling in UIViewController class. How i call this method in UIViewController class from that i automatically call this method at application launching time? should i calling that method in viewDidLoad event or viewWillAppear method?

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  • How to create an iPad directory view like animation?

    - by mahes25
    In the recent iOS 4.2 update, Apple introduced a nice animation for creating one level directories. I am trying to figure out how to implement a similar animation in my project. I would deeply appreciate it if anyone could give me any pointers to do this efficiently. From my investigation, I believe this animation or effect could be done very efficiently using Core Image which would allow me to write a custom filter. Unfortunately, Core Image is not available in iPhone. So how can do it? I read a blog post that explained a core animation scheme to create an iPad flip clock. The problem I have is similar but has important differences. Besides, I not excited about saving the subimage combinations, which I believe can cause a memory issue. Please enlighten me on the possible ways of doing this animation. I am relatively new to iOS programming, so I might have missed obvious ways of doing this animation or effect.

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  • Using LocationManager from another class than Main

    - by iphonePom
    Hi, i'm new here, i'm new in iphone development, i'm new in Objective-c and i'm new in engligh speaking, so don't hate me :P I'm creating an application that will use the location manager to display the distance between the own position and the positions of a list of shops, like AroundME. Now, i give the locationManager property to my main class and in the .m of that class, precisely in the viewDidLoad method, i make: [locationManager startUpdatingLocation]. It all works fine, but the problem is: i need to know my position in other classes than the main, but i don't think that is a good idea making [locationManager startUpdatingLocation] every time i need it, is not time overhead? The view of my main class is always below the others, so can i retrieve the updated location in my other classes? In what way? Creating another instance of my main class is not useful, i think, but the locationManager, once started, doesn't stop until my main class is released, isn't true? So i think that it is accessible in some way. Thanks for your attention and sorry for my awful english : )

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  • How can I tell xCode to recheck project resources that have been modified?

    - by Nick
    I'm working with a designer friend on an iPhone app and he likes to refine all sorts of images relating to the project we're working on. All these images have been added to the project previously (and added to the project folder by xcode) and then are modified in their new location. When I preview the images in xCode, the updated images show up but building and running in the simulator or on a device doesn't pick up the new image. In fact, if I do a clean build it seems to ignore the image all together and blank spaces appear where images should be. Now, I can delete these files from the project and re-add them and everything works peachy again. But there are a lot of them and I'd rather not do that every time an image is updated. Is there a way to get xCode to review and "learn" about these modified images? Is there a good reason for why it's not doing that automatically?

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  • Any way to ask a method for its name?

    - by Andy
    I'm trying to debug an iPhone app I'm working on, and the idea of adding fifty NSLog statements to the various source files gives me the willies. What I'd like to do is write a pair of statements, say NSString *methodName = [self methodName]; NSLog(@"%@", methodName); that I can just paste into each method I need to. Is there a way to do this? Is there some Objective-C construct for asking a method for its name? Or am I gonna have to do this the hard way?

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  • Can Boost Program_options separate comma separated argument values

    - by lrm
    If my command line is: > prog --mylist=a,b,c Can Boost's program_options be setup to see three distinct argument values for the mylist argument? I have configured program_options as: namespace po = boost::program_options; po::options_description opts("blah") opts.add_options() ("mylist", std::vector<std::string>>()->multitoken, "description"); po::variables_map vm; po::store(po::parse_command_line(argc, argv, opts), vm); po::notify(vm); When I check the value of the mylist argument, I see one value as a,b,c. I'd like to see three distinct values, split on comma. This works fine if I specify the command line as: > prog --mylist=a b c or > prog --mylist=a --mylist=b --mylist=c Is there a way to configure program_options so that it sees a,b,c as three values that should each be inserted into the vector, rather than one? I am using boost 1.41, g++ 4.5.0 20100520, and have enabled c++0x experimental extensions.

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  • How to I reference a pointer from a different class

    - by Justagruvn
    Hey team of awesomeness!, (Iphone Objective-C question) First off, I despise singletons with a passion. Though I should probably be trying to use one, I just dont want to. I want to create a data class (that is instantiated only once by a view controller on loading), and then using a different class, message the crap out of that data instance until it is brimming with so much data, it smiles. So, how do i do that? I made a pointer to the instance of the data class when I instantiated it. I'm now over in a separate view controller, action occurs, and I want to update the initial data object. I think I need to reference that object by way of pointer, but I have no idea how to do that. yes I've set properties and getters and setters, which seem to work, but only in the initial view controller class. Peace Love applesauce.

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  • Displaying Map ONLY when the button is clicked in Xcode

    - by Susanth
    Hi, I am developing an iPhone application using XCode and I am kinda stuck with the functionality described in the subject of this post. I want the map(using MapKit) to only load and display after I click a button. So, what code should I have under that my "(IBAction) showMap" function? Whatever I could find online talks about unhiding the map. I want to only load the map when a button is clicked rather than loading the map in the background and simply unhiding it the click of the the button. Thanks ! ~Susanth

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  • Core Data NSFetchedResultsController sorting in certain sequence

    - by Moze
    I'm writing iphone app that has UITableView and uses Core Data. Data in UITableView is shown using NSFetchedResultsController. I use NSPredicate operator "IN" to fetch only needed entries. NSArray *filterArray = [NSArray arrayWithObjects:@"789", @"963", @"445", @"198", nil]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"id IN %@", filterArray]; Now the problem is that I need to show entries in same sequence they are in filterArray. How can I do it? How I can create NSSortDescriptor that would sort all entries in that way? I tried without sort descriptor, but I get error that NSFetchedResultsController needs sortDescriptor to be set.

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  • How to write to an XML file from the iPad OS?

    - by user345474
    I am developing an app for IPad, and I need to modify several attributes in a XML file at runtime. I found the class NSXMLDocument, http://developer.apple.com/mac/library/documentation/cocoa/reference/foundation/Classes/NSXMLDocument_Class/Reference/Reference.html But I haven't been able to import it to my project. Is this class not available for IPhone/IPad development? Is there some other approach I can consider? I read about libxml library. Is it my answer or there is a better approach?

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  • XCode - Multiple targets, Multiple *internationalized* names?

    - by Kris Jenkins
    I've got an internationalized iPhone project. In the various ${lang}.lproj/InfoPlist.strings files I've got a single key, CFBundleName = "My App Name". That's working fine for a single target, but I can't make it work for multiple targets. I'd like to have several translated InfoPlistMyApp.strings files for the main target, plus several InfoPlistMyApp*Lite*.strings files for the lite version. But I can't figure out how to set it up. The InfoPlist.strings name seems to be set in stone, so I can't replace it dynamically. Any ideas?

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  • Accessing the "super of this" in Java

    - by gerdemb
    This is what I'm doing now. Is there a better way to access the super class? public class SearchWidget { private void addWishlistButton() { final SearchWidget thisWidget = this; button.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { // A better way to access the super class? // something like "this.super" ...? workWithWidget(thisWidget); } } } } I'm programming with Google Web Toolkit, but I think this is really a generic Java question.

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  • Should I use interface builder or not?

    - by Michael Waterfall
    I'd like to know more about the pros and cons of using interface builder when developing iPhone/iPad apps. I've written a fairly complex and customized app that's on the app store right now, but all of the interfaces are hand coded as they are fairly complex. I've customised the navigation and tab bars with backgrounds, table view cells are manually drawn for speed, and some views are complex and scalable with many subviews. I'm pondering whether or not to start using interface builder but I'm not sure to what extent I'll use it and whether it's worth it at all. Is it quicker? Can things still be easily customised? Any advice would be most welcome!

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  • Non US characters in section headers for a UITableView

    - by epatel
    I have added a section list for a simple Core Data iPhone app. I followed this so question to create it - How to use the first character as a section name but my list also contain items starting with characters outside A-Z, specially Å,Ä and Ö used here in Sweden. The problem now is that when the table view shows the section list the three last characters are drawn wrong. See image below It seems like my best option right now is to let those items be sorted under 'Z' if ([letter isEqual:@"Å"] || [letter isEqual:@"Ä"] || [letter isEqual:@"Ö"]) letter = @"Z"; Someone that have figured this one out? And while I'm at it... 'Å', 'Ä' and 'Ö' should be sorted in that order but are sorted as 'Ä', 'Å' and 'Ö' by Core Data NSSortDescriptor. I have tried to set set the selector to localizedCaseInsensitiveCompare: but that gives a out of order section name 'Ä. Objects must be sorted by section name' error. Seen that too?

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  • Running a Ruby interpreter on iPad

    - by slothbear
    I'll be taking a trip soon with my iPad, without my laptop. I'd like to continue to tinker with Ruby while I'm on the road. I have an iPhone developer program membership, and I'm not interested in submitting this stuff to the app store. I found the shinycocos project, which appears to embed a Ruby interpreter in an app. But I can't get it to run, and it seems pretty customized for running cocos2d stuff. My first goal is to run an interactive command line like Try Ruby!. After that, I'd like to enter small programs in a UITextView and run them. I'd appreciate any clues, tips, or existing projects you might know of.

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  • Why does UIActionSheet cancel crahes my App?

    - by Tim Büthe
    I try to use the UIActionSheet within my iPhone App but have the following problem. When I tap the cancel button "I don't", the app crashes. When I remove the NSLog statement from the actionSheet:clickedButtonAtIndex: it does not. The "Yes, do it" button works just fine and I see the log statement in the console. What's wrong? - (void) doItWithConfirm { UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"do you really wanna do it?" delegate:self cancelButtonTitle:@"I don't" destructiveButtonTitle: nil otherButtonTitles:@"Yes, do it", nil]; [actionSheet showInView:self.view]; [actionSheet release]; } - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { NSLog(@"buttonIndex: %@", buttonIndex); }

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  • displaying datepicker on the tap of a particular text field only

    - by praseed
    hi, i have a number of textfields . i want to display datepicker on the tap of a particular textfield only. wat i have is a number of textfields for entering details of a person like Name, address, date of birth etc... On the tap of text field for entering the date of birth i want to display date picker. if i include the code for the date picker in the textFieldShouldBeginEditing method ,will that show datepicker for tap on every textfield, . Pls help me out to find a solution for this ,, I am new to iphone app development...

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  • Reading data from a plist file

    - by K2Digital
    I'm trying to implement a Save State for my iPhone App. I've got a plist file called SaveData.plist and I can read it in via the following NSString *pListPath2 = [bundle pathForResource:@"SaveData" ofType:@"plist"]; NSDictionary *dictionary2 = [[NSDictionary alloc] initWithContentsOfFile:pListPath2]; self.SaveData = dictionary2; [dictionary release]; The Plist file has members SavedGame which is a Boolean to tell the app if there really is valid data here (if they did not exit the app in the middle of a game, I don't want their to be a Restore Point. Score which is an NSNumber. Time which is an NSNumber Playfield which is a 16 element array of NSNumbers How do I access those elements inside of the NSDictionary?

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  • How to set UITableView to Grouped?

    - by 4thSpace
    In an iPhone navigation based app, I want to add a second tableview but have its design available in IB. I've added a new empty XIB and dragged a UITableView onto it. I want to setup the layout through IB. I've created a controller for this tableview and set the File's Owner class in IB to this controller. I linked the tableview to File's Owner as well. I set the tableview to grouped in IB. However, that does not translate at runtime. I still have a plain tableview. In fact, none of the Inspector settings work at runtime. What have I missed?

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  • [NSData dataWithContentsOfFile:path] doesn't work

    - by Felics
    Hello, when I have the fallowing code to read a binary file: NSString* file = [NSString stringWithUTF8String:fileName]; NSString* filePath = resource ? [[NSBundle mainBundle] pathForResource:file ofType:nil] : [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent: file]; NSData* fileData = [NSData dataWithContentsOfFile:filePath]; Where "fileName" and resource are load function parameters. "resource" is used to know if the file is located in application bundle or in Documents. Sometimes this code works well and sometimes it doesn't. As far I saw this problem is random. I can run the code 10 times in a row and it works fine and after that it gives me nil data without any modification. Does anybody knows what could be the problem? Could it be related with file extension or file name? Thank you. PS: I use this code on iPhone Simulator and the file exists in application bundle.

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  • Is there a way to make an executable from an Xcode project?

    - by Questor
    Hello, all! I feel it's quite a naive question I'm going to ask. Excuse me if it's foolish. I have made an iPhone game using Cocos2d, Box2d and OpenGL. I want to show the game to a potential employer for demonstration purposes, without giving him the source code. How can I make a .exe or .app file from the Xcode project? I've searched online a lot but couldn't find the relevant answer. Thank you very much in advance.

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