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  • NSCFArray leak in the NSMutablearray allocation

    - by Srilakshmi Manthena
    Hi, I am getting the leak at this allocation filteredListContent = [[NSMutableArray alloc] initWithCapacity: [showList count]]; CODE: -(void)reloadTable { EventListAppDelegate *appDelegate = (EventListAppDelegate *)[[UIApplication sharedApplication] delegate]; contactList = [appDelegate getAllContactsList]; inviteeList = [appDelegate getInviteeListForEvent:event.primaryKey]; if (isInvited == YES) { showList=[appDelegate getInviteeListForEvent:event.primaryKey]; } else { showList =[appDelegate getAllContactsList]; } filteredListContent = [[NSMutableArray alloc] initWithCapacity: [showList count]]; [filteredListContent addObjectsFromArray: showList]; [self organizeContactItemsIntoIndexes]; self.title = [event.name capitalizedString]; [self getToolbar]; [theTableView reloadData]; } (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText { [filteredListContent removeAllObjects]; ContactDTO *currentElement; NSRange range; for (currentElement in showList) { range = [currentElement.lastName rangeOfString:searchText options:NSCaseInsensitiveSearch]; if(range.location==0) { [filteredListContent addObject:currentElement]; } } [self organizeContactItemsIntoIndexes]; [theTableView reloadData]; } (void)dealloc { [filteredListContent release]; [super dealloc]; }

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  • glDrawElements allocating memory and not releasing it

    - by Joshua Weinberg
    Using OpenGLES 1.1 on the iPhone 3G (device, not simulator), I do normal drawing fun. But at points during the run of the application I get giant memory spikes, after a lot of digging with instruments I have found that it is glDrawElements that is grabbing the memory. The buffer being allocated is 4 meg, which to me means its loading a texture into RAM, which I guess could be valid, but its never releasing this buffer, and is allocating multiple of them. How do I make sure that these buffers that GL is creating get destroyed, instead of just hanging around?

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  • I want to support UIInterfaceOrientationLandscapeRight and UIInterfaceOrientationLandscapeLeft only

    - by orangecl4now
    how do I make sure that UIInterfaceOrientationPortraitRight and UIInterfaceOrientationPortraitLeft are not supported. Basically I want my application to be used ONLY in UIInterfaceOrientationLandscapeRight and UIInterfaceOrientationLandscapeLeft I edited the Info.plist file MainWindow UISupportedInterfaceOrientations UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight

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  • Threading questions

    - by JK
    If I spawn a secondary thread and the threaded method calls other methods, are those methods run in the secondary thread or the main thread? Is there a way to determine on which thread a specified piece of code is being run?

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  • Create an NSManagedObject Without Saving?

    - by Josh Kahane
    I need to make an NSManagedObject without saving it, how can I do this? I have tried insetting one without a context but the app crashes. I have tried the following: GuestInfo *guest; guest = (GuestInfo *)[NSEntityDescription insertNewObjectForEntityForName:@"GuestInfo" inManagedObjectContext:nil]; This causes the crash with the following error message: 'NSInternalInconsistencyException', reason: '+entityForName: could not locate an NSManagedObjectModel for entity name 'GuestInfo'' This causes the Hope you can help, thanks.

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  • converting NSTimer running not on main runloop to GCD

    - by Justin Galzic
    I have a task that runs periodically and it was originally designed to run on a separate run loop than the main runloop using NSThread and NSTimer. What's the best way to adapt this to take advantage of GCD? Current code: -(void)initiateSomeTask { [NSThread detachNewThreadSelector:@selector(startTimerTask) toTarget:self withObject:nil]; } -(void)startTimerTask { // We won't get back the main runloop since we're on a new thread NSRunLoop *myRunLoop = [NSRunLoop currentRunLoop]; NSPort *myPort = [NSMachPort port]; [myRunLoop addPort:myPort forMode:NSDefaultRunLoopMode]; NSTimer *myTimer = [NSTimer timerWithTimeInterval:10 /* seconds */ target:self selector:@selector(doMyTaskMethod) userInfo:nil repeats:YES]; [myRunLoop addTimer:myTimer forMode:NSRunLoopCommonModes]; [myRunLoop run]; } Is there anything I can do besides replace detachNewThreadSelector with dispatch_async?

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  • iPhone - How do I find the MAC address of the connected WiFi access point?

    - by Ciaran
    Without using the private APIs, is it possible to programatically determine the MAC address of the access point that the iPhone is connected to? I understand that this should be doable using the core BSD libraries, but we are new to this, so it would be great if someone can point us to some starter code. Note: we're trying to determine the MAC address of the remote device - not the MAC address of the iPhone.

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  • Avaudioplayer problem

    - by Arun Sharma
    Hi All, Actually i am using avaudioplayer. my player is working very fine (forward,revind,play,pause,volume,progress bar). Only problem is that i am not able to stop the song. so all songs are overlapped please any body tell me where i put [self.player stop] to stop my player when i play new song.

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  • how i can display a NSDATA description not in hex but in human redeable text ?

    - by halba
    I'm writing an iphone apps that receive data from an udp socket i can dispay what i receive using NSDATA description but is in hex format and for example it look like this: <4c61742c 34343039 3131302e 35302c4c 6f6e2c39 38343237 352e3934 2c482c32 37392e30 302c4b6e 6f74732c 302e3032 2c4e616d 652c504c 41594552 2c496e64 65782c30 2c4d756c 7469706c 61796572 4e756d62 65722c30 00 i know that thi is a prase of compite sens how i can convert it ?

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  • After I apply custom logic, next UI action crashes my app.

    - by DanF
    I've got an team (eveningRoster) that I'm making a button add employees to. The team is really a relationship to that night's event, but it's represented with an AC. I wanted to make sure an employee did not belong to the team before it adds, so I added a method to MyDocument to check first. It seems to work, the error logs complete, but after I've added a member, the next time I click anything, the program crashes. Any guesses why? Here's the code: -(IBAction)playsTonight:(id)sender { NSArray *selection = [fullRoster selectedObjects]; NSArray *existing = [eveningRoster arrangedObjects]; //Result will be within each loop. BOOL result; //noDuplicates will stay YES until a duplicate is found. BOOL noDuplicates = YES; //For the loop: int count; for (count = 0; count < [selection count]; count++){ result = [existing containsObject:[selection objectAtIndex:count]]; if (result == YES){ NSLog(@"Duplicate found!"); noDuplicates = NO; } } if (noDuplicates == YES){ [eveningRoster addObjects:[fullRoster selectedObjects]]; NSLog(@"selected objects added."); [eveningTable reloadData]; NSLog(@"Table reloaded."); } [selection release]; [existing release]; return; }

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  • Common, reusable iPhone-App configuration screen

    - by Janey
    I'm writing code that will allow my iphone-app to have a "configuration page". A grouped, scrolling, UITableView... with cells that contain the needed textFields, switches, sliders, etc. It is an ENOURMOUS amount of code. Is there an easier way? Is there a way I could create a simple text-file, contain all my desired design choices and have my (reusable) code build the TableView for me? Or... can I just do the whole thing quicker/easier in Interface Builder instead of code?

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  • How to convert code to properly release memory

    - by BankStrong
    I've taken over a code base that has subtle flaws - audio player goes mute, unlogged crashes, odd behavior, etc. I found a way to provoke one instance of the problem and tracked it to this code snippet: NSURL *soundURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[[soundsToPlay objectAtIndex:count] description] ofType:@"mp3"]]; self.audioPlayer = nil; self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:soundURL error:nil]; self.audioPlayer.delegate = self; AudioSessionSetActive(YES); [audioPlayer play]; When I comment out the 2nd line (nil) and add a release to the end, this problem stops. [self.audioPlayer release]; Where do I go from here? Nils are used in a similar fashion throughout the code (and may cause similar problems) - is there a safe way to remove them? I'm new to memory management - how can I discern proper nil usage from bad nil usage?

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  • How do I send the mutable string to the NSTextField properly?

    - by Merle
    So I have all this code that I have debugged and it seems to be fine. I made a mutable string and for some reason I can not get it to be displayed on my label. the debugger says "2010-04-22 22:50:26.126 Fibonacci[24836:10b] * -[NSTextField setString:]: unrecognized selector sent to instance 0x130150" What is wrong with this? When I just send the string to NSLog, it comes out fine. here's all my code, any help would be appreciated. "elementNum" is a comboBox and "display" is a Label. Thanks #import "Controller.h" @implementation Controller - (IBAction)computeNumber:(id)sender { int x = 1; int y = 1; NSMutableString *numbers = [[NSMutableString alloc] init]; [numbers setString:@"1, 1,"]; int num = [[elementNum objectValueOfSelectedItem]intValue]; int count = 1; while (count<=num) { int z = y; y+=x; x=z; [numbers appendString:[NSString stringWithFormat:@" %d,", y]]; count++; } [display setString:numbers]; NSLog(numbers); } @end `

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  • how do i scroll through 100 photos in UIScrollView in IPhone

    - by mwangima
    I'm trying to scroll through images being downloaded from a users online album (like in the facebook iphone app) since i can't load all images into memory, i'm loading 3 at a time (prev,current & next). then removing image(prev-1) & image (next +1) from the uiscroller subviews. my logic works fine in the simulator but fails in the device with this error: [CALayer retain]: message sent to deallocated instance what could be the problem below is my code sample - (void)scrollViewDidEndDecelerating:(UIScrollView *)_scrollView { pageControlIsChangingPage = NO; CGFloat pageWidth = _scrollView.frame.size.width; int page = floor((_scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1; if (page1 && page<=(pageControl.numberOfPages-3)) { [self removeThisView:(page-2)]; [self removeThisView:(page+2)]; } if(page0) { NSLog(@"<< PREVIOUS"); [self showPhoto:(page-1)]; } [self showPhoto:page]; if(page<(pageControl.numberOfPages-1)) { //NSLog(@"NEXT "); [self showPhoto:page+1]; NSLog(@"FINISHED LOADING NEXT "); } } -(void) showPhoto:(NSInteger)index { CGFloat cx = scrollView.frame.size.width*index; CGFloat cy = 40; CGRect rect=CGRectMake( 0, 0,320, 480); rect.origin.x = cx; rect.origin.y = cy; AsyncImageView* asyncImage = [[AsyncImageView alloc] initWithFrame:rect]; asyncImage.tag = 999; NSURL *url = [NSURL URLWithString:[pics objectAtIndex:index]]; [asyncImage loadImageFromURL:url place:CGRectMake(150, 190, 30, 30) member:memberid isSlide:@"Yes" picId:[picsIds objectAtIndex:index]]; [scrollView addSubview:asyncImage]; [asyncImage release]; } -(void) removeThisView:(NSInteger)index { if(index<[[scrollView subviews] count] && [[scrollView subviews] objectAtIndex:index]!=nil){ if ([[[scrollView subviews] objectAtIndex:index] isKindOfClass:[AsyncImageView class]] || [[[scrollView subviews] objectAtIndex:index] isKindOfClass:[UIImageView class]]) { [[[scrollView subviews] objectAtIndex:index] removeFromSuperview]; } } } For the record it works OK in the simulator, but not the iphone device itself. any ideas will be appreciated. cheers, fred.

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  • Loading different portrait/landscape UIViews

    - by Tronic
    Hi, I have following View COntroller structure: ScrollViewController LandscapeViewController PortraitViewController Each with its own .nib The app starts in landscape mode where many landscape views are added to a scrollview. Each landscape view has its specific portrait view, so I have to assign like ID's to each of this views. Can you tell me, how I can load the specific portrait view for each landscape view when rotating the device? Do I have to make two scroll views? One for landscape, one for portrait? Or is it possible to just scroll through the landscape scrollview an load just one portrait view with the right content based on an ID? How could I implement that? The data comes from a property list. Thanks in advance!

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  • How to properly set relationships in Core Data when using setValue and data already exists

    - by ern
    Let's say I have two objects: Articles and Categories. For the sake of this example all relevant categories have already been added to the data store. When looping through data that holds edits for articles, there is category relationship information that needs to be saved. I was planning on using the -setValue method in the Article class in order to set the relationships like so: - (void)setValue:(id)value forUndefinedKey:(NSString *)key { if([key isEqualToString:@"categories"]){ NSLog(@"trying to set categories..."); } } The problem is that value isn't a Category, it is just a string (or array of strings) holding the title of a category. I could certainly do a lookup within this method for each category and assign it, but that seems inefficient when processing a whole bunch of articles at once. Another option is to populate an array of all possible categories and just filter, but my question is where to store that array? Should it be a class method on Article? Is there a way to pass in additional data to the -setValue method? Is there another, better option for setting the relationship I'm not thinking of? Thanks for your help.

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  • UIScrollView on scroll update method

    - by Alex Milde
    Hi is there a method / possibility to run a function when the scrollview is scrolling? i found scroll start and scroll end solutions but nothing like a onIsScrolling ... is there a built in solution? or whats the best workaround (nstimer)? thanks Alex

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  • iOS equivalent to MacOS NSAttributedString initWithRTF

    - by trekme
    What is an iOS equivalent to MacOS NSAttributedString initWithRTF ? The Application Kit extends Foundation’s NSAttributedString class by adding support for RTF, RTFD, and HTML (with or without attachments), graphics attributes (including font and ruler attributes), methods for drawing attributed strings, and methods for calculating significant linguistic units. - (id)initWithRTF:(NSData *)rtfData documentAttributes:(NSDictionary **)docAttributes I need to process a short stream of RTF data in an iOS application. Thank you!

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  • Update Label Value in Cocos2d

    - by Viral
    hi friends I am making a game in cocos2d , In that while updating score the old score values get on the label and the new value get overwritten. I m using following code to display the score, LblScore = [CCLabel labelWithString:[NSString stringWithFormat:@"%d",score] dimensions:CGSizeMake(100, 300) alignment:UITextAlignmentCenter fontName:@"Arial" fontSize:32.0]; Because of this the score value are not shown and all things get massed up, If any one having idea how to update new score?

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  • Xcode Tips for Eclipse users?

    - by willcodejavaforfood
    Hi, I've been slowly working my way through the examples in Beginning iPhone Development and there are a few things that I have not been able to figure out, but I'm sure you guys can help me with it. In Eclipse there is a Source-Generate Getters/Setters, can you do something similar to synthesize properties in Xcode I also cannot seem to find a Refactor menu I'm also struggling to find the equivalent to Source-Override/Implement Methods --Edit-- I failed to describe my problem it seems. I do know that synthesizing properties will generate getters/setters for me, but I am looking for a way to generate the @property/@synthesize code, by selecting the variables. Short list to start with, but I will probably have more as my confusion grows in might. :)

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  • Conceptual question about NSAutoreleasePools

    - by ryyst
    In my Cocoa program, wouldn't a really simple way of dealing with autoreleased objects be to just create a timer object inside the app delegate that calls the following method e.g. every 10 seconds: if (pool) { // Release & drain the current pool to free the memory. [pool release]; } // Create a new pool. pool = [[NSAutoreleasePool alloc] init]; The only problems I can imagine are: 1) If the above code runs in a separate thread, an object might get autoreleased between the release call to the old pool and the creation of the new pool - that seems highly unlikely though. 2) It's obviously not that efficient, because the pool might get released if there's nothing in it. Likewise, in the 10 second gap, many many objects might be autoreleased, causing the pool to grow a lot. Still, the above solution seems pretty suitable to small and simple projects. Why doesn't anybody use it? What's the best practice of using NSAutoreleasePools?

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