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  • Can not read and save a number from/into an .plist

    - by Flocked
    Hello, I created a property list with the name propertys.plist. Then I wrote this: NSString *path = [[NSBundle mainBundle] bundlePath]; NSString *finalPath = [path stringByAppendingPathComponent:@"speicherung.plist"]; NSMutableArray *plistData = [[NSMutableArray arrayWithContentsOfFile:finalPath] retain]; int a = [plistData objectAtIndex:1]; NSLog(@"%i", a); // returns 41386032, but the right number is 0 a = a + 1; NSNumber *ff = [NSNumber numberWithInt:a]; [plistData insertObject:ff atIndex:1]; NSLog(@"%@", [plistData objectAtIndex:1]); // returns 41386033 [plistData writeToFile:finalPath atomically:YES]; My app always get the wrong number. Why?

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  • SQLite - a smart way to remove and add new objects

    - by Ilya
    Hi, I have a table in my database and I want for each row in my table to have an unique id and to have the rows named sequently. For example: I have 10 rows, each has an id - starting from 0, ending at 9. When I remove a row from a table, lets say - row number 5, there occurs a "hole". And afterwards I add more data, but the "hole" is still there. It is important for me to know exact number of rows and to have at every row data in order to access my table arbitrarily. There is a way in sqlite to do it? Or do I have to manually manage removing and adding of data? Thank you in advance, Ilya.

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  • Instruments (Leaks) and NSDateFormatter

    - by Cal
    When I run my iPhone app with Instruments Leaks and parse a bunch of NSDates using NSDateFormatter my memory goes up about 1mb and stays even though these NSDates should be dealloc'd after the parsing (I just discard them if they aren't new). I thought the malloc (in my heaviest stack trace below) could become part of the NSDate but I also thought it could be memory that only used during some intermediate step in parsing. Does anyone know which one it is or how to find out? Also, is there a way to put a breakpoint on NSDate dealloc to see if that memory is really being reclaimed? Here's what my date formatter looks like for parsing these dates: df = [[NSDateFormatter alloc] init]; [df setDateFormat:@"EEE, d MMM yyyy H:m:s z"]; Here's the Heaviest Stack trace when the memory bumps up and stays there: 0 libSystem.B.dylib 208.80 Kb malloc 1 libicucore.A.dylib 868.19 Kb icu::ZoneMeta::getSingleCountry(icu::UnicodeString const&, icu::UnicodeString&) 2 libicucore.A.dylib 868.66 Kb icu::ZoneMeta::getSingleCountry(icu::UnicodeString const&, icu::UnicodeString&) 3 libicucore.A.dylib 868.67 Kb icu::ZoneMeta::getSingleCountry(icu::UnicodeString const&, icu::UnicodeString&) 4 libicucore.A.dylib 868.67 Kb icu::DateFormatSymbols::initZoneStringFormat() 5 libicucore.A.dylib 868.67 Kb icu::DateFormatSymbols::getZoneStringFormat() const 6 libicucore.A.dylib 868.67 Kb icu::SimpleDateFormat::subParse(icu::UnicodeString const&, int&, unsigned short, int, signed char, signed char, signed char*, icu::Calendar&) const 7 libicucore.A.dylib 868.67 Kb icu::SimpleDateFormat::parse(icu::UnicodeString const&, icu::Calendar&, icu::ParsePosition&) const 8 libicucore.A.dylib 868.67 Kb icu::DateFormat::parse(icu::UnicodeString const&, icu::ParsePosition&) const 9 libicucore.A.dylib 868.67 Kb udat_parse 10 CoreFoundation 868.67 Kb CFDateFormatterGetAbsoluteTimeFromString 11 CoreFoundation 868.67 Kb CFDateFormatterCreateDateFromString 12 Foundation 868.67 Kb -[NSDateFormatter getObjectValue:forString:range:error:] 13 Foundation 868.75 Kb -[NSDateFormatter getObjectValue:forString:errorDescription:] 14 Foundation 868.75 Kb -[NSDateFormatter dateFromString:] Thanks!

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  • Trying to debug a 'Assertion failure in -[UIActionSheet showInView:]' error....

    - by dsobol
    I am working through "Beginning iPad Application Development" and am getting hung up in Chapter 3 where I have created a project that works with an Action Sheet. As it stands now, my application loads into the simulator just fine with no errors that I am aware of, but as it runs, it crashes with the following errors showing up in the debugger window: 2010-05-31 19:44:39.703 UsingViewsActionSheet[49538:207] * Assertion failure in -[UIActionSheet showInView:], /SourceCache/UIKit_Sim/UIKit-1145.66/UIAlert.m:7073 2010-05-31 19:44:39.705 UsingViewsActionSheet[49538:207] * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: view != nil' I am sure that this is the block where the app breaks based upon my use of breakpoints. //Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { UIActionSheet *action = [[UIActionSheet alloc] initWithTitle:@"This is my Action Sheet!" delegate:self cancelButtonTitle:@"OK" destructiveButtonTitle:@"Delete Message!" otherButtonTitles:@"Option 1", @"Option 2", @"Option 3", nil]; [action showInView:self.view]; // <-- This line seems to trigger the crash.... [action release]; [super viewDidLoad]; } Am I missing something obvious, or is there more to the problem than is shown here? I have looked at the abstract for showInView and cannot divine anything there yet. I appreciate any and all asssitance. Regards, Steve O'Sullivan

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  • UIImages on UITableView?

    - by babu Kong
    what is the best method to display about 300 png images into a UITableView.. i dont wanna display them at the same time... i have 3 tableViewControllers that will each display about 100 imgaes.. (its for a catalog so the images are important to display) i used [uiimage imageNamed:] but that method caches the images and they dont get released so the memory usage is big.... is there any way to release the cache when the nav controller pushes a different view controller? i also tried [uiimage alloc] initWithContentsOfFile] but the images wont display.... any help?

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  • How to get HDD volume id programmatically?

    - by Leandro
    Hi, everybody. I`m programming in obj-c using cocoa, and I would like to discover the HDD volume id programmatically.I know that I will probably need to do this in pure C and than use it in my app, but even in the C language I could not find any answers. Please help.Thanks!

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  • iOS Efficiency File Saving Efficiency

    - by Guvvy Aba
    I was working on my iOS app and my goal is to save a file that I am receiving from the internet bit by bit. My current setup is that I have a NSMutableData object and I add a bit of data to it as I receive my file. After the last "packet" is received, I write the NSData to a file and the process is complete. I'm kind of worried that this isn't the ideal way to do it because of the limitations of RAM in a mobile device and it would be problematic to receive large files. My next thought was to implement a NSFileHandle so that as the file arrives, it would be saved to the disk, rather than the virtual memory. In terms of speed and efficiency, which method do you think will work decently on an iOS device. I am currently using the first, NSMutableData approach. Is it worth changing my app to use the NSFileHandle? Thanks in advance, Guvvy

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  • getting memory allocation at ActivityIndicator in Iphone sdk

    - by monish
    Hi Guys, Here Im gettimg memory allocation problem at activity indicator and My code is: - (id)init { if (self = [super init]) { self.title=@"Release Details"; contentView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; contentView.backgroundColor = [UIColor clearColor]; self.view = contentView; [contentView release]; CGRect frame = CGRectMake(0,0, 320,1500); containerView = [[UIView alloc] initWithFrame:frame]; webView = [ [UIWebView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; webView.backgroundColor = [UIColor colorWithPatternImage: [UIImage imageNamed:@"background1.png"]]; webView.delegate = self; [containerView addSubview:webView]; CGRect activityViewframe = CGRectMake(20,8,20, 20); progressInd = [[UIActivityIndicatorView alloc] initWithFrame:activityViewframe]; progressInd.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhite; progressInd.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin); [containerView addSubview:progressInd]; [progressInd startAnimating]; progressInd.hidden = NO; [progressInd stopAnimating]; [self.view addSubview:containerView]; isFetch=YES; } return self; } -(void) displayInProgressRightBarButton { UIView* rightBarButtonView = [ [UIView alloc] initWithFrame:CGRectMake(270,5,45, 35)]; [rightBarButtonView addSubview:progressInd]; UIBarButtonItem* buttonItem = [[UIBarButtonItem alloc] initWithCustomView:rightBarButtonView]; self.navigationItem.rightBarButtonItem = buttonItem; [rightBarButtonView release]; [buttonItem release]; } - (void)webViewDidStartLoad:(UIWebView *)webView { [self displayInProgressRightBarButton]; [progressInd startAnimating]; [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; } - (void)webViewDidFinishLoad:(UIWebView *)webView { [progressInd stopAnimating]; [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; } Also I released the progressInd in dealloc eventhough it showing memory allocation at progressInd = [[UIActivityIndicatorView alloc] initWithFrame:activityViewframe]; in init. can anyone help me to solve this. Anyone's help will be much Appreciated. Thank you, Monish.

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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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  • MPMoviePlayerViewController crash on iOS 6.0

    - by user1471568
    I have a trouble in my app for the iOS6.0. It works perfectly fine on iOS 5.1.1 and under, but on the 6.0 shows exc_bad_access. please let me know why. -(void)endAniView{ if (moviePlayer!=nil) { [moviePlayer.moviePlayer stop]; [self removeFromSuperview]; } } this method called when user touches a button. and below are NEW ERROR MESSAGE and I've never seen before ios 6.0 2012-09-18 16:13:22.410 KiKiSong[992:907] [MPAVController] Autoplay: Disabling autoplay for pause 2012-09-18 16:13:22.411 KiKiSong[992:907] [MPAVController] Autoplay: Disabling autoplay 2012-09-18 16:13:22.450 KiKiSong[992:907] [MPAVController] Autoplay: Skipping autoplay, disabled (for current item: 1, on player: 0) please help me. Thanks

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  • Array of ImageView

    - by Viral
    hi, I m making a Shooting game, in that I want an array of ImageViews , so that for each new level the bullets can be Disappear and the view will be shown from the initial level. SO if Any one know how to store imageviews in an array kindly tell me... regards viral..

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  • NSScrollView frame and flipped documentView

    - by StrAbZ
    Hi, I have problems with NSScrollView, It is not displayed the way I want. Yes I know there is a lot of post about it around the web, I need to override the isFlipped, in order to make it return YES, in my NSView subclass. Ok, it's done, so now, my scrollView scroll from top to bottom, and not in the reverse way, as it was before overriding isFlipped. But, this is the second part, my real problem, which I didn't found any answer on the web, how the hell I'm supposed to code, or create my view in interface builder, if everything is flipped? If I put something at the top, it is displayed a the bottom… do you have any magic trick to handle that? And my last problem, is the NSScrollView frame. before setting the documentView of my scroll view, everything is fine, the scrollView is displayed at the place I choose, but, when I set the document view, it looks like the scrollview frame looks bigger, so I have to resize it…. is this a normal behavior? Thank you very much.

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  • How to set the content size according to the size of UINavigation bar

    - by Deepika
    Hi all I am resizing the navigation bar when my application switches into landscape orientation. But i am not able to set the content size of navigation bar according to its height. Landscape image :- In this image the top left bar item and title of navigation bar are not resizing when it switches into landscape orientation....they should get re sized according to height of navigation bar. Please suggest me any idea for it? Thanks Deepika

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  • iPhone SDK background thread image loading problem

    - by retailevolved
    I have created a grid view that displays six "cells" of content. In each cell, an image is loaded from the web. There are a multiple pages of this grid (the user moves through them by swiping up / down to see the next set of cells). Each cell has its own view controller. When these view controllers load, they use an ImageLoader class that I made to load and display an image. These view controllers implement an ImageLoaderDelegate that has a single method that gets called when the image is finished loading. ImageLoader does its work on a background thread and then simply notifies its delegate when it is done loading, passing the image to the delegate method. Trouble is that if the user moves on to the next page of grid content before the image has finished loading (releasing the GridCellViewControllers that use the ImageLoaders), the app crashes. I suspect that this is because along the line, an asynchronous method finishes and attempts to notify its delegate but can't because it's been released. Here's some code to give a better picture: GridCellViewController.m: - (void)viewDidLoad { [super viewDidLoad]; // ImageLoader _loader = [[ProductImageLoader alloc] init]; _loader.delegate = self; if(_boundObject) [_loader loadImageForProduct:_boundObject]; } //ImageLoaderDelegate method - (void) imageDidFinishLoading: (UIImage *)image { [_imgController setImage:image]; } ProductImageLoader.m - (void) loadImageForProduct: (Product *) product { // Get image on another thread [NSThread detachNewThreadSelector:@selector(getImageForProductInBackground:) toTarget:self withObject:product]; } - (void) getImageForProductInBackground: (Product *) product { NSAutoreleasePool *tempPool = [[NSAutoreleasePool alloc] init]; HttpRequestLoader *tempLoader = [[HttpRequestLoader alloc] init]; NSURL *tempUrl = [product getImageUrl]; NSData *imageData = tempUrl ? [tempLoader loadSynchronousDataFromAddress:[tempUrl absoluteString]] : nil; UIImage *image = [[UIImage alloc] initWithData:imageData]; [tempPool release]; if(delegate) [delegate imageDidFinishLoading:image]; } The app crashes with EXC_BAD_ACCESS. Disclaimer: The code has been slightly modified to focus on the issue at hand.

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  • Background image for list view still shows white behind text for cells.

    - by MonkeyTroy
    I wanted to put a background image partially visible behind a list view. I created a list view in my nib with an image view behind it and made the list view background 20% opacity. This allows the background image to show thru but my text in the cells show a white background behind and if I create the cells in cellForRowAtIndexPath the cells have a white background too. I am creating and setting the cell textLabel and the detailTextLabel in the cellForRowAtIndexPath event. Not sure how to get rid of that, or if there is a better way to do the background image.

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  • Get directory contents in date modified order

    - by nevan
    Is there an method to get the contents of a folder in a particular order? I'd like an array of file attribute dictionaries (or just file names) ordered by date modified. Right now, I'm doing it this way: get an array with the file names get the attributes of each file store the file's path and modified date in a dictionary with the date as a key Next I have to output the dictionary in date order, but I wondered if there's an easier way? If not, is there a code snippet somewhere which will do this for me? Thanks.

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  • Why CABasicAnimation will send the layer's view to back and front?

    - by ohho
    There are two UIViews of similar size. UIView one (A) is originally on top of UIView two (B). When I try to perform a CABasicAnimation transform.rotation.y on A's layer: CABasicAnimation *rotateAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.y"]; CGFloat startValue = 0.0; CGFloat endValue = M_PI; rotateAnimation.fromValue = [NSNumber numberWithDouble:startValue]; rotateAnimation.toValue = [NSNumber numberWithDouble:endValue]; rotateAnimation.duration = 5.0; [CATransaction begin]; [imageA.layer addAnimation:rotateAnimation forKey:@"rotate"]; [CATransaction commit]; During the animation, the animating layer's UIView (A) will be: sent back (A is suddenly behind B) rotating ... passed second half of the animation sent front (A is now on top of B again) Is there a way to keep A on top of B for the whole animation period? Thanks! UPDATE: project source is attached: FlipLayer.zip

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  • Debugging NSoperation BAD ACCESS within graphics context

    - by Joe
    I tried everything to debug this one but I can't get to the bottom of it. This code lives in a subclass of NSOperation which is processed from a queue: (borders is an ivar NSArray containing 5 UIimage objects) NSMutableArray *images = [[NSMutableArray alloc] init]; for (unsigned i = 0; i < 5; i++) { CGSize size = CGSizeMake(60, 60); UIGraphicsBeginImageContext(size); CGPoint thumbPoint = CGPointMake(6, 6); [controller.image drawAtPoint:thumbPoint]; CGPoint borderPoint = CGPointMake(0, 0); [[borders objectAtIndex:i] drawAtPoint:borderPoint]; [images addObject:UIGraphicsGetImageFromCurrentImageContext()]; UIGraphicsEndImageContext(); } [images release]; The code works fine most of the time but when I push the iphone by access subviews and pressing lots of buttons on the UI I either get this exception which is trapped by the operation: Exception Load view: *** -[NSCFArray insertObject:atIndex:]: attempt to insert nil or I get this: Program received signal: “EXC_BAD_ACCESS”. The exception is caused because UIGraphicsGetImageFromCurrentImageContext() return nil. I don't know how to debug the EXC_BAD_ACCESS but I'm guessing that this error (in fact both of these errors) is caused by low memory. The debugger stops at the line: [controller.image drawAtPoint:thumbPoint]; As I mentioned I've trapped the exception so I can live with that but the EXC_BAD_ACCESS is more serious. IF this is memory related how can I tell and is it possible to increase the memory available to NSOperation?

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  • NSMutableArray count method show the NSMutableArray is count 0?

    - by Tattat
    This is my init method: -(id)init{ self = [super init]; magicNumber = 8; myMagicArray = [[NSMutableArray alloc] initWithCapacity:(magicNumber*magicNumber)]; NSLog(@"this is the magic Array: %d", [myMagicArray count]); return self; } This is the .h: @interface Magic : NSObject { NSMutableArray *myMagicArray; int magicNumber; } The console shows me that number is 0. instead of 64, wt's happen? I already check out this post: StackOverflow Link: http://stackoverflow.com/questions/633699/nsmutablearray-count-always-returns-zero

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  • Declaring CustomViewController?

    - by fuzzygoat
    I have noticed in some of my older apps that in situations where I have added a custom View Controller I have not changed the View Controller class in the application delegate. For example, below I have created a CustomViewController class but have declared viewController as UIViewController. @interface ApplicationAppDelegate: NSObject <UIApplicationDelegate> { UIWindow *window; UIViewController *viewController; } My question is, both work, but for correctness should I be writing this as follows: @class CustomViewController; @interface ApplicationAppDelegate: NSObject <UIApplicationDelegate> { UIWindow *window; CustomViewController *viewController; } gary

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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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