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  • EXC_BAD_ACCESS signal received

    - by Hector Ramos
    When deploying the application to the device, the program will quit after a few cycles with the following error: Program received signal: "EXC_BAD_ACCESS". The program runs without any issue on the iPhone simulator, it will also debug and run as long as I step through the instructions one at a time. As soon as I let it run again, I will hit the EXC_BAD_ACCESS signal. In this particular case, it happened to be an error in the accelerometer code. It would not execute within the simulator, which is why it did not throw any errors. However, it would execute once deployed to the device. Most of the answers to this question deal with the general EXC_BAD_ACCESS error, so I will leave this open as a catch-all for the dreaded Bad Access error. EXC_BAD_ACCESS is typically thrown as the result of an illegal memory access. You can find more information in the answers below. Have you encountered the EXC_BAD_ACCESS signal before, and how did you deal with it?

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  • Get text of button from IBAction - iPhone

    - by Organiccat
    When an IBAction is called: -(IBAction) onClick1: (id) sender; What is passed in the sender? Since it's hooked up through the IB, I'm not really sure. My question is how to get the text of the button to be the passed object (NSString most likely) so that I could call it inside the action implementation. -(IBAction) onClick1: (id) sender { NSLog(@"User clicked %@", sender); // Do something here with the variable 'sender' }

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  • iPhone: NSAlert Delegate Method Never Called

    - by Marco
    Hello, I have implemented an NSAlert but the delegate method didDissmissWithButton is never called. This code evokes the NSAlert: NSString *title = [NSString stringWithFormat:@"Keine Internetverbindung"]; NSString *alertMessage = [NSString stringWithFormat:@"Es konnte keine Verbindung zu www.sip.de aufgebaut werden!"]; NSString *ok = [NSString stringWithFormat:@"Ok"]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:alertMessage delegate:self cancelButtonTitle:ok otherButtonTitles:nil]; [alert show]; [alert release]; and this is the NSAlert delegate method: - (void)alertView:(UIAlertView *)alertView didDisMissWithButtonIndex:(NSInteger)buttonIndex{ exit(3); } The method is never called, what is my mistake?

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  • NSTableView setting the sort column?

    - by overcyn
    I have a NSTableView with multiple columns. clicking each of the columns sorts by the column like in iTunes. However when the tableview first loads the rows are unsorted and no tablecolumn is highlighted or displaying the up/down indicator image. I'm wondering if theres a simple way I can programmatically set the column the table is sorted by and set the indicator image on startup. The only solution I can think of is using [NSTableView setIndicatorImage: inTableColumn:] and [NSTableView setHighlightedColumn:], but that makes it so that clicking on the header doesnt highlight the column. I would rather not have to use tableView:mouseDownInHeaderOfTableColumn: and rewrite the whole click on header to sort thing.

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  • Best practice for sharing code between OSX and IOS app

    - by Alberto
    I am creating an iOS version of an existing OSX app and am wondering what the best practices are for sharing code between the two. The code in question only depends on the foundation framework and the Sqlite dynamic library, so it should compile and run fine on both platforms. It seems to me there are three possible options: Create a single project with and OSX and an IOS targets, add source files to each target as appropriate. Create two separate projects for the OSX and IOS apps, put shared code in a common location in the workspace and add it as reference to both projects. Create three projects: OSX app, IOS app and a shared static library with an OSX and an IOS targets; add each library target to the respective application. Is there any reason one of the above approaches may be better than the other two? If not, option 2 seems to be the simplest by far.

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  • The accossoryView of a UITableViewCell disappears after the visible view is changed

    - by Luca
    Hi! I'm experiencing this strange situation. I have a UITableView where, when the user selects a cell, a long (network) process begins. So, I performed this in a background thread and I placed (in the didSelectRowAtIndexPath) a UIActivityIndicatorView as the accessory view. This is what I wrote: UITableViewCell* cell = [self.tableView cellForRowAtIndexPath:indexPath]; UIActivityIndicatorView* activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite]; cell.accessoryView = activityView; [activityView startAnimating]; [activityView release]; everything seems to work correctly, except that, if during a loading process (when the indicator is animated), I switch the view using a UITabBar, when I go back to the UITableView, the UIActivityIndicatorView that should still be there has disappeared. Any idea of what I did wrong? Thanks!

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  • Core Data 1-to-many relationship: List all related objects as section header in UITableView

    - by Snej
    Hi: I struggle with Core Data on the iPhone about the following: I have a 1-to-many relationship in Core Data. Assume the entities are called recipe and category. A category can have many recipes. I accomplished to get all recipes listed in a UITableView with section headers named after the category. What i want to achieve is to list all categories as section header, even those which have no recipe: category1 <--- this one should be displayed too category2 recipe_x recipe_y category3 recipe_z NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Recipe" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; [fetchRequest setFetchBatchSize:10]; NSSortDescriptor *sortDescriptor1 = [[NSSortDescriptor alloc] initWithKey:@"category.categoryName" ascending:YES]; NSSortDescriptor *sortDescriptor2 = [[NSSortDescriptor alloc] initWithKey:@"recipeName" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor1,sortDescriptor2, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:@"category.categoryName" cacheName:@"Recipes"]; What is the most elegant way to achieve this with core data?

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  • How can I test Xcode Project on iPhone ?

    - by Khawar
    I have developed a view based project in XCode. It is successfully running in iPhone Simulator. But I want to test this project on real iPhone device to check the behavior of application. Is there any way I can test my application on iPhone device without buying Apple Developer's License? Thanks in advance.

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  • How to add multiple menu items with the same title to NSPopUpButton(NSMenu)?

    - by William S. Pear
    As docs say it's impossible to add two menu items to NSPopUpButton if they both have the same title. I was trying to add menu items to [popupButton menu], but with no luck. I was also trying to create a new menu, add items to it and then use [popupButton setMenu:newMenu], but no. Menu always display only one item per name. But I know it should be possible, if you try to create a smart playlist in iTunes, you could select "Playlist" from the left popup button, "=" from the middle, and the right one will hold menu items for every playlist in iTunes EVEN if they have the same title. So how do they do it?

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  • How to add a scrollable NSTableView programmatically

    - by Jakob Dam Jensen
    I'm trying to add a tableview to a view in code instead of using Interface Builder and unfortunately it's causing some problems =( Here's an example of how I'm doing it now. NSScrollView *scrollView = [[NSScrollView alloc] initWithFrame:someRect]; NSTableView *tableView = [[NSTableView alloc] initWithFrame: scrollView.bounds]; resultsTableView.dataSource = self; resultsScrollView.documentView = resultsTableView; [someView addSubview: scrollView]; So basically I'm just putting the tableView inside the scrollView (because that's what IB is doing) and then adding the latter as a subview of the someView. The result is that a tableView appears - but the no data is shown within the tableView. Debugging shows that the dataSource is being asked for how many rows are in the tableView but the method: tableView:objectValueForTableColumn:row: is never being called. I suspect that this is because of my way of creating the tableView. I've tried google but no luck and the "Introduction to Table Views Programming Guide" on macdevcenter wasn't helpful either. What am I missing? Thanks in advance...

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  • how to stop animation after using beginAnimations?

    - by www.ruu.cc
    i use the following code to do a string rolling, but how to stop the animation? [UIView beginAnimations:@"ruucc" context:NULL]; [UIView setAnimationDuration:12.8f]; [UIView setAnimationCurve:UIViewAnimationCurveLinear]; [UIView setAnimationDelegate:self]; [UIView setAnimationRepeatAutoreverses:NO]; [UIView setAnimationRepeatCount:999999]; frame = label1.frame; frame.origin.x = -12; label1.frame = frame; [UIView commitAnimations];

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  • UISearchBar cancel button color?

    - by cactus
    When I drop a UISearchBar into my view inside Interface Builder, and change its style to Black Opaque, the cancel button stays unfittingly blue / gray and doesn't become black. How can I make the cancel button black?

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  • Add new language to existing Xcode project localization

    - by leolobato
    Hey guys, I'm working on an existing Xcode 3.2.2 Universal iPhone OS project which is already localized for 4 languages (EN, IT, DE and FR). We are now adding a new language (JA) into this project. Each existing .lproj folder (en.lproj, it.lproj, de.lproj and fr.lproj) has almost 60 files - including PNGs, HTMLs and the Localizable.strings file. Each one of those files appear as localized groups inside Groups & Files in Xcode. They're spread all over the tree. If I right-click one of those groups (say, Localizable.strings) inside Xcode, Get Info, click on "Add Localization" and type "ja" - as the Xcode docs suggest, nothing happens. From what I read in this newgroup, it's possibly because of the way those folders are named. If they were named like English.lproj and Italian.lproj, this was supposed to work. So, for me to actually import a new language localized file into the existing group, I have to: Right-click the localized group file. Choose "Add Existing File". Select the corresponding file inside the ja.lproj folder. I'm about to get a new ja.lproj folder with those 60 localized files and would love to import them in the project in a way that doesn't involve searching for every single file in Groups & Trees and performing those steps... for every one of those 60 files. Is that possible? Is there a right (or better) way to import a new language into this Xcode project?

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  • Why does [NSOutlineView clickedRow] always return -1?

    - by jxpx777
    I have a fairly pedestrian non-editable NSOutlineView setup. In the bindings for the outline view, I have set the binding to my file's owner (MyDocument FWIW) with a selector of outlineViewWasDoubleClicked The method exists and is called, but when I call -clickedRow it consistently returns -1 rather than the row number of the row that I double clicked to trigger the method. My _outlineView is an IBOutlet and I've verified that it is hooked up correctly by using -selectedRow for the method rather than -clickedRow (I would rather use -clickedRow though because it seems unintuitive for the user to have a row selected, double click another row to do something with it and have the method triggered with the row they had selected.) My best guess right now is that the -clickedRow value is getting cleared out before my method fires, but I don't know where or what might be gobbling it up. Thanks in advance for any help.

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  • How can I pop a view from a UINavigationController and replace it with another in one operation?

    - by Matt Brandt
    I have an application where I need to remove one view from the stack of a UINavigationController and replace it with another. The situation is that the first view creates an editable item and then replaces itself with an editor for the item. When I do the obvious solution within the first view: MyEditViewController *mevc = [[MYEditViewController alloc] initWithGizmo: gizmo]; [self retain]; [self.navigationController popViewControllerAnimated: NO]; [self.navigationController pushViewController: mevc animated: YES]; [self release]; I get very strange behavior. Usually the editor view will appear, but if I try to use the back button on the nav bar I get extra screens, some blank, and some just screwed up. The title becomes random too. It is like the nav stack is completely hosed. What would be a better approach to this problem? Thanks, Matt

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  • Go back to main window once secondView is loaded

    - by Ruthy
    Hi, I have a Tableview on AppDelegate That calls a SecondView (dvController) when DidSelectRowAtIndexPath using: [self.window addSubview:[dvController view]]; On SecondView I defined a button linked to IBAction that should go back to previous view. It works great but when row selected but, How could then go back to previous view if main one is AppDelegate? self.window addSubview:[?? view]]; Should be basic concept but I am quite new and unable to get the solution. Thanx :)

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  • Getting Data From Webpages?

    - by fuzzygoat
    When looking to get data from a web page whats the recommended method if the page does not provide a structured data feed? Am I right in thinking that its just a case of doing an NSURLRequest and then hacking what you need out of the responseData(NSData*)? I am not too concerned about the implementation in Xcode, I am more curious about actually collecting the data, before I start coding a "hunt & peck" through a list of data. gary

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  • Does NSArray:lastObject return an autoreleased object?

    - by Kyle
    I'm working on an iPhone project where I would like to retrieve an object from an NSMutableArray, remove the object from the array and then use it later. The code looks something like this: NSMutableArray * array; // fill the array NSObject * obj = [array lastObject]; [array removeLastObject]; // do something with obj (in the same function) array is the only entity with a retain on the object that is being accessed. Is this safe to do? I would assume that this would only work if lastObject autoreleased the object which is something that I can't figure out if it does.

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  • Problems using a library in Xcode

    - by Pablo
    Hi! I'm actually developping an application for iPhone and I need to use a library, initially dedicated to a Linux environment. Since I'm using a Mac (with Snow Leopard and Intel Core Duo), I guess it's possible to use this library in my app. My library has 3 files: a file .h, a file .a and a file .so (both .a and .so are in /Developer/usr/lib). In addition I have included the .h i nmy code and I've added the .a in XCode has a framework (and it works because XCode find the .so compiling). For your info when I use the command "file" for the file .so, I have: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, not stripped When I compile for the Xcode Simulator, I have a warning and an error. The warning is: In /Developer/usr/lib/mylib.so, file was built for unsupported file format which is not the architecture being linked (i386) The error is: "_mylib_fct", referenced from: -[MyAppAppDelegate applicationDidBecomeActive:] in MyAppAppDelegate.o Symbol(s) not found Collect2: ld returned 1 exit status When I compile for the Device 3.0 with architecture arm6, I also have the same error, but the warning is quite different: ln /Users/Pablo/MyApp/mylib.a file is not of required architecture I try to solve this and make the app working with this lib since days, and I don't understand why the compiler is complaining... is it a 32/64 bits issues ? How can I deal with that ? Your help will be very appreciated. Thx!

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  • UIView "suck" animation

    - by igul222
    I'd like to use the UIView "sucking" transition (view is "sucked" into a point) referenced here: http://iphonedevwiki.net/index.php/UIViewAnimationState#Using_suckEffect The method above, however, uses private APIs, which makes it next to useless for an App Store app. How can I recreate a similar effect without relying on private APIs? I'm guessing the answer has to do with OpenGL, although I have zero experience there.

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  • NSOutlineview - strange behavior after reloading data

    - by matei
    I have a NSOutlineView which loads data from a data source. The table is displayed in a panel. The items shown in the table are items which belong to an object (the relation is one-to many between the object and the items). I have a list of objects in a combo box (in fact a NSPopupButton), and when I select another object in the combo box, I want it's items to be shown in the table (the NSOutlineView). I managed to do all this , however when I select another object from the combo box, not all of it's items are displayed. I have put some logging messages in the data source and it seems that there are some items that are being returned from the data source , but are not shown in the table (and are not queried for children). Now the strange part is that when I click the main window (as I said, all that I described here is in a NSPanel loaded on top of the window) , all the data is displayed correctly. It seems as if clicking the main window triggers something in the NSOutlineView that makes it display the missing items, but I can't tell what it is.

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