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  • Looking for the log file on iPhone

    - by zp26
    Hi, I have a problem. I have the code below for save a data on file. I build my app on the device, and run. The result variable is TRUE, but i don't find the file on the my iPhone device. Can you help me? Thank and sorry for my english XP -(void)saveXML:(NSString*)name:(float)x:(float)y:(float)z{ NSMutableData *data = [NSMutableData data]; NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data]; [archiver setOutputFormat:NSPropertyListXMLFormat_v1_0]; [archiver encodeFloat:x forKey:@"x"]; [archiver encodeFloat:y forKey:@"y"]; [archiver encodeFloat:z forKey:@"z"]; [archiver encodeObject:name forKey:@"name"]; [archiver finishEncoding]; NSString* filePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"XML Position"]; BOOL result = [data writeToFile:filePath atomically:YES]; if(result) [self updateTextView:@"success"]; [archiver release]; }

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  • Gradual memory leak and slowdown in loop

    - by Benji XVI
    I have a simple foundation tool that exports every frame of a movie as a .tiff file. Here is the relevant code: NSString* movieLoc = [NSString stringWithCString:argv[1]]; QTMovie *sourceMovie = [QTMovie movieWithFile:movieLoc error:nil]; int i=0; while (QTTimeCompare([sourceMovie currentTime], [sourceMovie duration]) != NSOrderedSame) { // save image of movie to disk NSAutoreleasePool *arp = [[NSAutoreleasePool alloc] init]; NSString *filePath = [NSString stringWithFormat:@"/somelocation_%d.tiff", i++]; NSData *currentImageData = [[sourceMovie currentFrameImage] TIFFRepresentation]; [currentImageData writeToFile:filePath atomically:NO]; NSLog(@"%@", filePath); [sourceMovie stepForward]; [arp release]; } [pool drain]; return 0; As you can see, in order to prevent very large memory buildups with the various transparently-autoreleased variables in the loop, we create, and flush, an autoreleasepool with every run through the loop. However, over the course of stepping through a movie, the amount of memory used by the program still gradually increases, and the speed at which frames are processed drops precipitously. (From ~0.5 seconds per frame at the start, to ~2 seconds per frame by the 250th frame.) The only thing I can think can be causing the gradual memory leak is a buildup of the NSAutoreleasePool objects themselves. Am I right in thinking they will only be deallocated when the outer pool is released? If so, is there a better memory management solution here? Creating a pool every run through the loop seems a little hacky. And if not, what is causing the slow memory leak? (It is not NSStrings, and much too slow to be NSImages or NSDatas.) And what could be causing the slowdown?

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  • problem with presentModalViewController

    - by pbcoder
    If my iPad is in Landscape mode and presentModalViewController is called the view automatically turns into portrait mode. Any solutions? UIViewController * start = [[UIViewController alloc]initWithNibName:@"SecondView" bundle:nil]; start.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; start.modalPresentationStyle = UIModalPresentationFormSheet; [self presentModalViewController:start animated:YES]; In SecondView I've already added: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; }

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  • iPhone, special characters in JSON Response

    - by eddit
    Writing an iphone app, and I'm getting my data from a REST API that returns JSON. My problem is, some of the data has special characters embedded and Im getting errors. Example: MartÌn Petite-RiviËre-Saint-FranÁois Here is my current code: NSString *jsonString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding]; NSMutableArray *tempResults = [[[jsonString JSONValue] objectForKey:@"getRegionResortsLastUpdatedResponse"] objectForKey:@"return"]; Whenever the data has special characters in it "jsonString" return "(null)", otherwise everything works fine. Is this something I can handle on my end, or does the API need to be modified to output the character codes?

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  • CoreData and many NSArrayController

    - by unixo
    In my CoreData Application, I've an outline view on left of main window, acting as source list (like iTunes); on the right I display a proper view, based on outline selection. Each view has its components, such as table view, connected to array controller, owned by the specific view. Very often different views display same data, for example, a table view of the same entity. From a performance point of view, is better to have a single array controller per entity and share it between all views or does CoreData cache avoid memory waste?

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  • iOS : is it possible to open previous viewController after crashing and re-launch app?

    - by Nitin Gohel
    How to achieve this stuff below? Please give me some guidance for it. I describe my issue below. When I tap home button and remove app from tray and while I am opening app I get the login screen. I know how to use NSUserDefaults well. But my issue is that when I navigate 3rd or 4th viewController and I press Home Button and remove app from tray, Then whenever I open app than I want to open with last open viewController. Also same when my app is Crashing and I am opening it again then I want to open app with last open viewController state. So I just want to know that is that possible or not? If yes, then please guide me how to achieve this stuff. Thank you

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  • View Loading Problem

    - by riteshkumar1905
    Hello I Using a tab bar with navigation bar with navigation bar.We have a list of songs in song list no navigation bar and no tab bar. when i select a song and then load xib with (tab bar+navigation bar) in this xib i creat a segment for going to list. - (void)segmentAction:(id)sender{ if([sender selectedSegmentIndex] == 0) { [MainController1 release]; songs *mainController=[[songs alloc]init]; [self.navigationController pushViewController:mainController animated:NO]; [mainController release]; } } this code load list of song but navigation bar and tab bar is still there. so, how i load our list.

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  • Modal View Does Not Appear in Center in Horizontal Orientation

    - by Sheehan Alam
    I have a UIPresentationFormSheet (contains a textview) that appears in the center of the screen when I am in vertical orientation. When I dismiss the modal view, it disappears fine. When I am in horizontal orientation my modal view does not appear in the center of the screen. I have to dismiss my keyboard for the modal view to appear in the center. [self presentModalViewController:composeTweetController animated:TRUE]; When I dismiss the modal view in horizontal orientation the app automatically switches to vertical orientation. -(void)dismissComposeTweetView{ [self dismissModalViewControllerAnimated:TRUE]; } I want the following to happen: Modal view should appear in the center in horizontal orientation Modal view should disappear without switching to vertical orientation

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  • Memory leak at NSObject allocation

    - by Srilakshmi Manthena
    HI, I am getting memory leak at NSObject allocation i.e., ContactDTO* contactDTO = [[ContactDTO alloc] init]; Code: +(ContactDTO*) getContactDTOForId:(NSString*) contactId { NSString* homeMail =@""; NSString* workMail=@""; NSString *lastNameString=@""; NSString *firstNameString=@""; firstNameString = [AddressBookUtil getValueForProperty:kABPersonFirstNameProperty forContact:contactId]; lastNameString = [AddressBookUtil getValueForProperty:kABPersonLastNameProperty forContact:contactId]; ABRecordID contactIntId = [contactId intValue]; ABRecordRef person = ABAddressBookGetPersonWithRecordID(addressBook, contactIntId); ABMultiValueRef emailMultiValue =(NSString *)ABRecordCopyValue(person, kABPersonEmailProperty); for(CFIndex j=0;j<ABMultiValueGetCount(emailMultiValue);j++) { NSString* curentTypeLabel =(NSString *)ABMultiValueCopyLabelAtIndex(emailMultiValue,j); if([curentTypeLabel isEqualToString:@"_$!<Home>!$_"]==YES) { NSString* currentEmail =(NSString *)ABMultiValueCopyValueAtIndex(emailMultiValue,j); if([currentEmail isEqualToString:nil]==NO) { homeMail = [currentEmail copy]; } } if([curentTypeLabel isEqualToString:@"_$!<Work>!$_"]==YES) { NSString* currentEmail =(NSString *)ABMultiValueCopyValueAtIndex(emailMultiValue,j); if([currentEmail isEqualToString:nil]==NO) { workMail = [currentEmail copy]; } } } ContactDTO* contactDTO = [[ContactDTO alloc] init]; contactDTO.firstName = firstNameString; contactDTO.lastName = lastNameString; contactDTO.contactId = contactId; contactDTO.homeEmail = homeMail; contactDTO.workEmail = workMail; return [contactDTO autorelease]; }

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  • Specific Strings And NSScanner

    - by Garry
    I need to determine whether a string (sourceString) contains another string (queryString) and if it does, at what offset. I'm guessing that NSScanner might do the trick but I don't fully understand the documentation. Let's say sourceString = @"What's the weather in London today?" If I set queryString to equal @"What's the weather", I'd like a method that would determine that, in this case, YES (sourceString does contain queryString) and the offset is 0 (i.e. at the start of sourceString). Any suggestions?

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  • Cocoa Scripting Bridge and <contents> element

    - by Stephen
    So, the application I'm trying to script has a scripting definition file that includes a <contents> element, which is an "implicitly specified container." The question, how do I get at what's inside this element using Scripting Bridge? Or alternatively, how do I send the Apple Event necessary to retrieve it and then transform what I get back into an SBObject? I already tried: [document nameOfKey] document.nameofKey [document contents] document.contents

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  • Parsing CSV: how can NSScanner recognize empty field (i.e. ,,)?

    - by Fabrizio Prosperi
    I am very new to Xcode and trying - as millions - to parse a CSV file. I have read many contributions and I am managing it but I have a problem when my NSScanner intercepts an empty field: "Field_A, Field_B,, Field_D". I guess it is because it ignores empty space by default, or in this case no space at all. String is: "Personal","2011-01-01","Personal","Cigarettes",,4.60,"Cash","", I tried to debug it using scanLocation: 2011-04-22 15:57:32.414 Spending[42015:a0f] Before while...scan location is:0 2011-04-22 15:57:32.414 Spending[42015:a0f] Account: "Personal" - scan location is:10 2011-04-22 15:57:32.415 Spending[42015:a0f] Date: "2011-01-01" - scan location is:23 2011-04-22 15:57:32.415 Spending[42015:a0f] Category: "Personal" - scan location is:34 2011-04-22 15:57:32.416 Spending[42015:a0f] Subcategory: "Cigarettes" - scan location is:47 2011-04-22 15:57:32.416 Spending[42015:a0f] Income: 4.600000 - scan location is:53 2011-04-22 15:57:32.416 Spending[42015:a0f] Expense: 0.000000 - scan location is:53 2011-04-22 15:57:32.417 Spending[42015:a0f] Payment: "Cash" - scan location is:60 2011-04-22 15:57:32.417 Spending[42015:a0f] Note: "" - scan location is:63 And as you can see after that even expense field gets no value (should be 4.60). Here is the relevant piece of code: NSScanner *scanner = [NSScanner scannerWithString:fileString]; [scanner setCharactersToBeSkipped: [NSCharacterSet characterSetWithCharactersInString:@"\n, "]]; NSString *account, *date, *category, *subcategory, *payment, *note; float income, expense; // Set up data delimiter using comma NSCharacterSet *commaSet; commaSet = [NSCharacterSet characterSetWithCharactersInString:@","]; NSLog (@"Before while...scan location is:%d\n", scanner.scanLocation); [scanner scanUpToCharactersFromSet:commaSet intoString:&account]; NSLog(@"Account: %@ - scan location is:%d\n",account, scanner.scanLocation); [scanner scanUpToCharactersFromSet:commaSet intoString:&date]; NSLog(@"Date: %@ - scan location is:%d\n",date, scanner.scanLocation); [scanner scanUpToCharactersFromSet:commaSet intoString:&category]; NSLog(@"Category: %@ - scan location is:%d\n",category, scanner.scanLocation); [scanner scanUpToCharactersFromSet:commaSet intoString:&subcategory]; NSLog(@"Subcategory: %@ - scan location is:%d\n",subcategory, scanner.scanLocation); [scanner scanFloat:&income]; NSLog(@"Income: %f - scan location is:%d\n",income, scanner.scanLocation); [scanner scanFloat:&expense]; NSLog(@"Expense: %f - scan location is:%d\n",expense, scanner.scanLocation); [scanner scanUpToCharactersFromSet:commaSet intoString:&payment]; NSLog(@"Payment: %@ - scan location is:%d\n",payment, scanner.scanLocation); [scanner scanUpToCharactersFromSet:commaSet intoString:&note]; NSLog(@"Note: %@\n - scan location is:%d",note, scanner.scanLocation); I tried looking carefully through NSScanner Class Reference, but could not get an idea? Do you have any? Thanks, Fabrizio.

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  • Autorelease and properties

    - by ganuke
    I have few questions to ask about the following class #import <Cocoa/Cocoa.h> @interface SomeObject { NSString *title; } @property (retain) NSString *title; @end implementation SomeObject @synthesize title; -(id)init { if (self=[super init]) { self.title=[NSString stringWithFormat:@"allyouneed"]; } return self; } -(void)testMethod{ self.title=[[NSString alloc] init] ; } -(void)dealloc { self.title=nil; [super dealloc]; } In the .h file do we need to declare the title and sub when we add the property. is it not enough to add the @property (retain) NSString *title; line. 2.Do i need to autorelease both assignment to title in the init and testMethod. if So why? Can some one explain these things to me.

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  • iPhone - Change entity class (NSManagedObject) to make them initializable

    - by ncohen
    Hi everyone, I would like to use my custom NSManagedObject like a normal object (as well as its regular functions). Is it possible to modify the class in order to be able to initialize it like a normal object? [[myManagedObject alloc] init]; Thanks edit: to clarify the question, will it screw everything up if I change the @dynamic with @synthesize in the implementation?

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  • not saving when using setDidReceiveDataSelector

    - by coder4xc
    i want to download a file and show the progress bar i was able to do this. now , i want to show the progress value in a label and use this code to progress init and update label : [queue setDelegate:self]; [queue setRequestDidFinishSelector:@selector(updateLabel)]; [queue setDownloadProgressDelegate:progress]; [queue setShowAccurateProgress:YES]; ASIHTTPRequest *request; request = [ASIHTTPRequest requestWithURL:url]; [request setDelegate:self]; [request setTemporaryFileDownloadPath:[filePath stringByAppendingString:@".download"]]; [request setAllowResumeForFileDownloads:YES]; [request setDidFinishSelector:@selector(updateLabel)]; [request setDidReceiveDataSelector:@selector(updateLabel)]; [request setShouldContinueWhenAppEntersBackground:YES]; [request setShouldAttemptPersistentConnection:NO]; [request setDownloadDestinationPath:filePath]; [queue addOperation:request]; [queue go]; but not save in the destination path ! and when i clear this code :  [request setDidReceiveDataSelector:@selector(updateLabel)]; saving done ! what is problem ? i want to update label text when progress value changed

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  • Cell Dequeue problem when table inside another table's cell content view

    - by Shailesh Kanzariya
    I am using two table views (Main Table and Sub Table), one table inside other's cell. I am adding Sub Table in Main Table's cell content view. I am also using different Cell Identifier for both table cells. Now, issue is : When - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath is called, very first time cell of Main Table is generated and when I scroll up/down they all are just dequeued, so it is expected and standard behavior and working fine. But, cell of Sub Table is getting created/allocated every time. It is not dequeued as it should be. I guess, its happening because Sub Table is part of Main Table's Cell Content view. But not sure and don't know how to resolve it. Can somebody help me to find the solution?

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  • How to call a view on click of each UITableViewCell programatically?

    - by Cathy
    Hi, I have created a UITableViewcontroller and a UINavigationController in a TableController.m with UITableviewCell set to say @"CellOne" @"CellTwo". Now i also created two other files `ImageView1.m` ImageView2.m where if i click on CellOne i should be able to get the view placed on ImageView1.m, same applied to the ImageView2.m.How should i achieve this programatically without using nib file?

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  • XCode enum woes

    - by Raconteur
    Hi gang, I thought I had this sorted, but I am still missing something. Very simply, I have a Settings class that hold a DAO (sitting on a plist). I want to have a couple of enums for the settings for convenience and readability, such as GamePlayType and DifficultyLevel. Right now I am defining them in the Settings.h file above the @interface line as such: typedef enum { EASY, NORMAL, HARD } DifficultyLevel; and typedef enum { SET_NUMBER_OF_MOVES, TO_COMPLETION } GamePlayType; If I access them from within the Settings class like: - (int)gridSizeForLOD { switch ([self difficultyLevel]) { case EASY: return GRID_SIZE_EASY; case NORMAL: return GRID_SIZE_NORMAL; case HARD: return GRID_SIZE_HARD; default: return GRID_SIZE_NORMAL; } } everything is fine. But, if I try to access them outside of the Settings class, let's say in my main view controller class, like this: if (([settings gameType] == SET_NUMBER_OF_MOVES) && (numMoves == [settings numMovesForLOD])) { [self showLoseScreen]; } I get errors (like EXC_BAD_ACCESS) or the condition always fails. Am I doing something incorrectly? Also, I should point out that I have this code for the call to gameType (which lives in the Settings class): - (GamePlayType)gameType { return [dao gameType]; } and the DAO implements gameType like this: - (int)gameType { return (settingsContent != nil) ? [[settingsContent objectForKey:@"Game Type"] intValue] : 0; } I know I have the DAO returning an int instead of a GamePlayType, but A) the problem I am describing arose there when I tried to use the "proper" data type, and B) I did not think it would matter since the enum is just a bunch of named ints, right? Any help, greatly appreciated. I really want to understand this thoroughly, and something is eluding me... Cheers, Chris

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