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• EXEC_BAD_ACCESS in UITableView cellForRowAtIndexPath

  - by David van Dugteren

  My UITable is returning EXEC_BAD_ACCESS, but why! See this code snippet! Loading the UITableView works fine, so allXYZArray != nil and is populated! Then scrolling the tableview to the bottom and back up causes it to crash, as it goes to reload the method cellForRowAtIndexPath It fails on line: "NSLog(@"allXYZArray::count: %i", [allXYZArray count]);" - (UITableViewCell *)tableView:(UITableView *)theTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"CellIdentifier"; UITableViewCell *cell = [theTableView dequeueReusableCellWithIdentifier:CellIdentifier]; cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; @try { if (allAdviceArray == nil) { NSLog(@"nil"); allXYZArray = [ToolBox getMergedSortedDictionaries:allXYZGiven SecondDictionary:allXYZSought]; } NSLog(@"%i", [indexPath row]); NSLog(@"allXYZArray::count: %i", [allXYZArray count]);

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• Objective C / iPhone comparing 2 CLLocations /GPS coordinates help

  - by user289503

  Ok , so thanks to Claus Broch I made some progress with comparing two GPS locations. I need to be able to say "IF currentlocation IS EQUAL TO (any GPS position from a list ) THEN do something My code at the moment is : CLLocationCoordinate2D bonusOne; bonusOne.latitude = 37.331689; bonusOne.longitude = -122.030731; Which is the simulators GPS location at Infinite Loop CLLocation *loc1 = [[CLLocation alloc] initWithLatitude:bonusOne.latitude longitude:bonusOne.longitude]; double distance = [loc1 getDistanceFrom:newLocation]; if(distance <= 10000000) { Then do something } Any number under 10000000 and it assumes that there is no match. Any ideas ? Thanks is advance.

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• App crashes often in a for-loop

  - by Flocked

  Hello, my app crashes often in this for-loop: for (int a = 0; a <= 20; a++) { int b = arc4random() % [newsStories count]; NSString * foo = [[NSString alloc]initWithString:[[newsStories objectAtIndex: arc4random() % b]objectForKey:@"title"]]; foo = [foo stringByReplacingOccurrencesOfString:@"’" withString:@""]; foo = [[foo componentsSeparatedByCharactersInSet:[[NSCharacterSet letterCharacterSet] invertedSet]] componentsJoinedByString:@" "]; foo = [foo stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; textView.text = [textView.text stringByAppendingString:[NSString stringWithFormat:@"%@ ", foo]]; } The code changes a NSString from a NSDictionary and adds it into a textView. Sometimes it first crashes in the second time using the for-loop. What did I wrong?

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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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• Camera Filters in ios7

  - by Muhannad Dasoqie

  How I can use the camera filters that already exist in iOS7? If i used this code: UIImagePickerController *picker= [[UIImagePickerController alloc]init]; picker.delegate = self; picker.allowsEditing = YES; picker.sourceType = UIImagePickerControllerSourceTypeCamera; [self presentModalViewController:picker animated:YES]; the camera will open, and I can capture a photo but without using the filters. my question is: can I use the exist filters in camera view in iOS7?

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• how to delete contents from plist programmatically ?

  - by srikanth rongali

  I have a plist file. I want to delete the data from the plist. How can I do it programmatically ? My Plist have an array cells. cells is filled by dictionaries . Each dictionary is filled by string. I used the following way. NSString* plistPath1 = [[NSBundle mainBundle] pathForResource:@"details" ofType:@"plist"]; [cells removeObjectAtIndex:[clickedButtonPath row]]; NSMutableArray *array1 = [[NSMutableArray alloc] initWithCapacity:4]; array1 = cells; [array1 writeToFile:plistPath1 atomically: YES]; But the plist is not taking the changes. Thank you.

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• Add UIBarButtonItem in interface builder, how to?

  - by Martin

  I have a navigation based application that have a uinavigataioncontroller containing uitableviewcontrollers. I want to add buttons to the UINavigationbar of the uinavigataioncontroller, usually I write code to add these buttons, something like this: UIBarButtonItem *saveButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(saveClicked:)]; self.navigationItem.rightBarButtonItem = saveButton; [saveButton release]; My idea now was to use interface builder instead. But I'm not sure how to do it. What I'm trying to do is to add a UINavigationItem in the xib file of the viewcontroller (my viewcontroller is called TextViewController), something like this: See this image: http://i48.tinypic.com/qq5yk7.jpg But how can I make TextViewController use the UINavigationItem I added? The button I add doesn't show in the navigationbar. Any ideas on how to do this? What am I missing?

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• Can not change UILabel text color

  - by HelloWorld

  Hi, all I want to chang UILabel text color,but can't change it's color,This is my code. UILabel *categoryTitle = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 46, 16)]; categoryTitle.text = @"abc"; categoryTitle.backgroundColor = [UIColor clearColor]; categoryTitle.font = [UIFont systemFontOfSize:12]; categoryTitle.textAlignment = UITextAlignmentCenter; categoryTitle.adjustsFontSizeToFitWidth = YES; categoryTitle.textColor = [UIColor colorWithRed:188 green:149 blue:88 alpha:1.0]; [self.view addSubview:categoryTitle]; [categoryTitle release]; The label text color is white ,not my custome color. Thank for any help.

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• lazy loading images in UIScrollView

  - by idober

  I have an application the requires scrolling of many images. because I can not load all the images, and save it in the memory, I am lazy loading them. The problem is if I scroll too quickly, there are "black images" showing (images that did not manage to load). this is the lazy loading code: int currentImageToLoad = [self calculateWhichImageShowing] + imageBufferZone; [(UIView*)[[theScrollView subviews] objectAtIndex:0]removeFromSuperview]; PictureObject *pic = (PictureObject *)[imageList objectAtIndex:currentImageToLoad]; MyImageView *iv = [[MyImageView alloc] initWithFrame:CGRectMake(currentImageToLoad * 320.0f, 20.0f, 320.0f, 460)]; NSData *imageData = [NSData dataWithContentsOfFile:[pic imageName]]; [iv setupView:[UIImage imageWithData: imageData] :[pic imageDescription]]; [theScrollView insertSubview:iv atIndex:5]; [iv release]; this is the code inside scrollViewWillBeginDecelerating: [NSThread detachNewThreadSelector:@selector(lazyLoadImages) toTarget:self withObject:nil];

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• Error: CLLocationManager headingAvailable

  - by Bubu4711

  I have the following code: In my .h-Header-File: #import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> @interface Compass : UIViewController <CLLocationManagerDelegate> { [...] CLLocationManager *locationManager; } [...] @property(nonatomic, retain) CLLocationManager *locationManager; @end And my .m-File: #import "[FILENAME].h" [...] @synthesize locationManager; - (void)viewDidLoad { [super viewDidLoad]; self.locationManager = [[[CLLocationManager alloc] init] autorelease]; if(locationManager.headingAvailable == NO) { [...] } [...] } And I get the following error Message for "locationManager.headingAvailable": error:request for member 'headingAvailable' in something not a structure or union I've added the CoreLocation framework to my app... Who can help me?

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• UITableViewCellStyleDefault image size

  - by Rob Bonner

  Hello all, I am getting some odd behavior from stock table cells, or maybe not odd, maybe I am making some assumptions. I create the cells as follows: cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; Then I assign an image to the default imageView property. My image usually comes in from a user, so it might be larger than the default size. To take care of this I: [cell.imageView setContentMode:UIViewContentModeScaleAspectFit]; which I expected to scale the image for me within the control, but in reality, the images are all over the map. So, is there a proper way to constrain the image in stock cell types? Thanks in advance!

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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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• Unselected UIPickerView value

  - by morticae

  According to the documentation, if a UIPickerView has no selected value, the expected return from selectedRowInComponent: should be: "A zero-indexed number identifying the selected row, or -1 if no row is selected." However, if I check the value the very line after initializing one, its value is 0. Even if I then manually set it to -1, it still returns 0. I would like to be able to detect whether the user has chosen a value yet or not, without recording it in a local variable. Is this possible? example: UIPickerView *picker = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, 46.0, 320.0, 216.0)]; [picker selectRow:-1 inComponent:0 animated:NO]; NSLog(@"SELECTED %d", [picker selectedRowInComponent:0]); expected output: SELECTED -1 actual output: SELECTED 0

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• UIPickerView Custom Font

  - by Lee Armstrong

  I have the following code that I have found and tried to implement. I want to set the UIPickerView to have labels that I can customize the text in... When loading this it is just blank at the moment! - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view { UILabel *pickerLabel = (UILabel *)view; NSString *text = @"TTT"; // Reuse the label if possible, otherwise create and configure a new one if ((pickerLabel == nil) || ([pickerLabel class] != [UILabel class])) { //newlabel CGRect frame = CGRectMake(0.0, 0.0, 270, 32.0); pickerLabel = [[[UILabel alloc] initWithFrame:frame] autorelease]; pickerLabel.textAlignment = UITextAlignmentLeft; pickerLabel.backgroundColor = [UIColor clearColor]; pickerLabel.font = [UIFont fontWithName:@"AmericanTypewriter" size:28]; } pickerLabel.textColor = [UIColor brownColor]; return pickerLabel; }

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• Proper way to copy a readonly NSMutableArray

  - by Jon Hull

  I have an object with a readonly property that I am trying to implement NSCopying for. It has a mutableArray called "subConditions" (which holds "SubCondition" objects). I have made it readonly because I want callers to be able to change the data in the array, but not the array itself. This worked really well until it was time to write the -copyWithZone: method. After fumbling around a bit, I managed to get something that seems to work. I am not sure if it is the best practice though. Here is a simplified version of my -copyWithZone: method: -(id)copyWithZone:(NSZone*)zone { Condition *copy = [[[self class]allocWithZone:zone]init]; NSArray *copiedArray = [[NSArray alloc]initWithArray:self.subConditions copyItems:YES]; [copy.subConditions setArray:copiedArray]; [copiedArray release]; return copy; } Is this the correct/best way to copy a readonly mutableArray?

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• Programmatically Centering UIViews

  - by David Foster

  I've seen a bunch of similar questions to this, but nothing seems to be completely what I'm looking for. Do forgive me if I have missed the solution answered in another question, though! Right. I have a view. 160 pixels both tall and wide. I know that this view is going to be used as a subview, and I know that it always needs to be centered about both axis in whatever situation it's used. If defining the view programmatically, how can I be sure that it is always perfectly centered, horizontally and vertically, relative to its superview? So far, all I have is this simple code: - (void)loadView { self.view = [[UIView alloc] initWithFrame:CGRectMake(80, 150, 160, 160)]; self.view.backgroundColor = [UIColor greenColor]; self.view.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin); [self.view release]; } This does the centralization, but only in the simplest of cases. Any insight is greatly appreciated.

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• How do I write an IF ELSE to check string contents of an array?

  - by Michael Robinson

  I'm trying to write an IF ELSE statement to enable shipping, If user doesn't add an address the array contents remain as "-" & "-" for the two items in the array. I want to check to see if those are in the array, if they are then I want to enableshipping. Here is the code for getting the array: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *fullFileName = [NSString stringWithFormat:@"%@/arraySaveFile", documentsDirectory]; NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:fullFileName]; How do I write this first line to look for the "-" & "-"? if ([fullFileName isEqualToString:@"-","-"]) { [nnNEP EnableShipping]; } else { [nnNEP DisableShipping]; } Thanks, michael

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• iPhone: UITextField inside TableView cell?

  - by Nic Hubbard

  I am trying to programatically add a UITextFiled inside one of my tableview cells. How would I do this? Assuming it is in the following method, what code would I use? - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:CellIdentifier] autorelease]; cell.editingAccessoryType = UITableViewCellAccessoryDisclosureIndicator; // Don't let the user click when not in editing mode cell.selectionStyle = UITableViewCellSelectionStyleNone; } switch (indexPath.row) { case 0: cell.textLabel.text = @"Title"; // This is where I want to add a text field cell.detailTextLabel.text = @"test"; cell.editing = YES; break; } return cell; }

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• Problem with Core Data - EXC_BAD_ACCESS

  - by BarrettJ

  I'm using the following code and I'm getting an EXC_BAD_ACCESS when trying to get the count of objects - anyone have any idea why? Oddly enough, the error only happens if the count should be one or greater, if there are no objects it seems to work fine (it outputs null). NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"TVShow" inManagedObjectContext:[self managedObjectContext]]; [fetchRequest setEntity:entity]; [fetchRequest includesPendingChanges]; //NSPredicate *predicate = [NSPredicate predicateWithFormat:@"ID == %@", showId]; //[fetchRequest setPredicate:predicate]; NSError *error; NSLog(@"Generating Count"); NSUInteger count = [[self managedObjectContext] countForFetchRequest:fetchRequest error:&error]; if(count == NSNotFound) { NSLog(@"error"); } else { NSLog(@"%@", count); // EXC_BAD_ACCESS here } [fetchRequest release];

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• I-Phone: Trying to check an Array for an item based on a string produced

  - by MB

  Hello! I'm writing a program that will concatenate a string based on letters, and then check an array to see if that string exists. If it does, then it will print a line in IB saying so. I've got all the ins-and-outs worked out, save for the fact that the simulator keeps crashing on me! Here's the code: -(IBAction)checkWord:(id)sender { NSMutableArray *wordList = [NSMutableArray arrayWithObjects:@"BIKE", @"BUS", @"BILL", nil]; if([wordList containsObject:theWord]) { NSString *dummyText = [[NSString alloc] initWithFormat:@"%@ is a real word.", theWord]; checkText.text = dummyText; [dummyText release]; } } "theWord" is the string that is being referenced against the Array to see if it matches an item contained within it. In this case "BIKE" is 'theWord'. Thank you for your help in advance! -MB

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• take images from a cell , into next view controller

  - by richard Stephenson

  hi guys , i asked this question yesterday but it doesnt seem to have asked properly so im trying again in my app im parsing in an xml file , in that file there is a path for an image to download an in my tableview controler i have this to download the image and display it in the cell NSURL *url = [NSURL URLWithString:aStory.picture]; NSData *data = [NSData dataWithContentsOfURL:url]; UIImage *img = [[UIImage alloc] initWithData:data]; im then pushing another view controller on the top and displaying some text in a text view , but i also want to take the image from the cell selected and put that in there too , but everything i try does not work. any ideas on how i can do this Thanks in advance Richard

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• AVAudioPlayer via Speakers

  - by Mark

  I got the following code: - (id)init { if (self = [super init]) { UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback; AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory); UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker; AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride); [[AVAudioSession sharedInstance] setDelegate:self]; [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil]; [[AVAudioSession sharedInstance] setActive:YES error:nil]; } return self; } But somehow the sound does not want to come out of the speakers, can someone see what I am doing wrong? The code I use for playing is: AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFilePathURL error:nil]; [player prepareToPlay]; [player setVolume:1.0]; [player play];

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• "Method definition not in @implementation context"?

  - by Nathan Hess

  I put this in X-code: - (void)viewDidLoad { [super viewDidLoad]; NSString *path = [[NSBundle mainBundle] pathForResource:@"DrinkArray" ofType:@"plist"]; NSMutableArray* tmpArray = [[NSMutableArray alloc] initWithContentsOfFile:path]; self.drinks = tmpArray; [tmpArray release]; // Uncomment the following line to display an Edit button in the navigation bar for this view controller. // self.navigationItem.rightBarButtonItem = self.editButtonItem; } And it says this on the first line: "Method Definition not an @implementation context" Could anyone help?

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• Novocaine - How to loop file playback? (iOS)

  - by lppier

  I'm using Novocaine by alexbw Novocaine for my audio project. I'm playing around with the example code here for file reading. The file plays back with no problem. I would like to loop this recording with the gap between the loops - any suggestion as to how I can do so? Thanks. Pier. // AUDIO FILE READING OHHH YEAHHHH // ======================================== NSArray *pathComponents = [NSArray arrayWithObjects: [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject], @"testrecording.wav", nil]; NSURL *inputFileURL = [NSURL fileURLWithPathComponents:pathComponents]; NSLog(@"URL: %@", inputFileURL); fileReader = [[AudioFileReader alloc] initWithAudioFileURL:inputFileURL samplingRate:audioManager.samplingRate numChannels:audioManager.numOutputChannels]; [fileReader play]; [fileReader setCurrentTime:0.0]; //float duration = fileReader.getDuration; [audioManager setOutputBlock:^(float *data, UInt32 numFrames, UInt32 numChannels) { [fileReader retrieveFreshAudio:data numFrames:numFrames numChannels:numChannels]; NSLog(@"Time: %f", [fileReader getCurrentTime]); }];

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• Scripting Bridge generates error creating a new playlist in iTunes on 10.5, but not 10.6

  - by Simone Manganelli

  I'm having a problem with the Scripting Bridge framework in 10.5. Specifically, I use this code to create a new user playlist in iTunes: NSDictionary *propertiesDict = [NSDictionary dictionaryWithObject:@"playlistName" forKey:@"name"]; playlistToReturn = (iTunesUserPlaylist*)[[[iTunesApp classForScriptingClass:@"user playlist"] alloc] initWithProperties:propertiesDict]; SBElementArray *sourcesArray = [iTunesApp sources]; iTunesSource *librarySource = [sourcesArray objectAtIndex:0]; SBElementArray *userPlaylistsArray = [librarySource userPlaylists]; [userPlaylistsArray addObject:playlistToReturn]; This code works fine in 10.6. The playlist is created correctly, and I can add songs to it later. However, on 10.5, an error is generated: Apple event:'core'\'crel'{ 'kocl':'cUsP', 'insh':'insl'{ 'kobj':'obj '{ 'want':'cUsP', 'from':'obj '{ 'want':'cSrc', 'from':'null'(), 'form':'ID ', 'seld':42 }, 'form':'indx', 'seld':'abso'($206C6C61$) }, 'kpos':'end ' }, 'prdt':{ 'pnam':'utxt'("playlistName") } }; Error Domain=SBError Code=-10014 UserInfo=0x152c8cb0 "Operation could not be completed. (SBError error -10014.)" Why?

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