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  • Who should call viewDidLoad on progammatically loaded views?

    - by Remus Rusanu
    When I need to load a view programatically I do the following: MyController* myController = [[MyController alloc] init]; [[NSBundle mainBundle] loadNibNamed:@"myNib" owner:myController options:nil]; // use my controller here, eg. push it in the nav controller This works fine, but my controller's viewDidLoad is never called. So I resorted to manually calling it after the loadNibNamed call, but it doesn't seem correct. I was expecting the framework to call the viewDidLoad on my behalf. Is this the right way or I'm missing something?

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  • How can I create a button with a UIActivityIndicator in my navigation bar with the same style as nor

    - by Jarin Udom
    All of the examples I've seen on here and other sites involved creating a UIActivityIndicatorView and loading it with something like: self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithCustomView:myActivityIndicatorView target:nil action:nil] autorelease]; However, that just creates a plain activity indicator in the navigation bar. What I want to do is have a button that looks just like the normal UIBarButtonSystemItem buttons but with an activity indicator instead of one of the default images. I've tried doing initWithImage and initWithTitle with nil images or titles and then adding the activity indicator as a subview, but that doesn't work. Any ideas?

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  • MPMediaickerController memory leak

    - by Joe
    This is code from Apple's Addmusic example. MPMediaPickerController *picker = [[MPMediaPickerController alloc] initWithMediaTypes: MPMediaTypeMusic]; picker.delegate = self; picker.allowsPickingMultipleItems = YES; picker.prompt = NSLocalizedString (@"Add songs to play", "Prompt in media item picker"); // The media item picker uses the default UI style, so it needs a default-style // status bar to match it visually [[UIApplication sharedApplication] setStatusBarStyle: UIStatusBarStyleDefault animated: YES]; [self presentModalViewController: picker animated: YES]; [picker release]; I'm using this code in my app and the Leaks instrument highlights a leak on the line: [self presentModalViewController: picker animated: YES]; I think that this is because this line retains a reference to picker which cannot be subsequently released. Is there any way around this?

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  • Background image of table cell

    - by Shuaib
    Hey guys, Trying to set a background image for a table view cell, tried almost everything but failing. Hoping someone would notice what I am doing wrong. Here is how my current code looks like: static NSString *CustomCellIdentifier = @"listCustomCell"; listCustomCell *cell = (listCustomCell *)[tableView dequeueReusableCellWithIdentifier: CustomCellIdentifier]; if (cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"listCustomCell" owner:self options:nil]; for (id oneObject in nib) if ([oneObject isKindOfClass:[listCustomCell class]]) cell = (listCustomCell *)oneObject; } cell.backgroundColor = [UIColor clearColor]; UIImageView *backgroundImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"list_selected.png"]]; //[cell setBackgroundView:backgroundImageView]; cell.backgroundView = backgroundImageView; The image won't show up in the background of the cell. All I see is plain white background. Thanks for help.

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  • load animationImage from a table view Controller

    - by ackoverflow
    I use a UITableViewController to display a list of items, and one of the items selection must lead to a photo gallery created with animationImages. I usually declare the controllers associated to the first level selection with something like : MyController *myController = [[MyController alloc] initWithStyle:UITableViewStylePlain]; myController.title = @"title 1"; myController.rowImage = [UIImage imageNamed:@"myControllerIcon.png"]; .. But I believe a UIViewController is needed to use animationImages.. How can I display a image animation directly from a table view ?

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  • How to create the slide show option for the photos in my application in iphone?

    - by Warrior
    I am new to iphone development.I want to create an application which shows the photos in the device.I have to implement the feature of slide show also.I am using UIImagePickerController to access the photos of the device. Here is my code - (void)viewDidLoad { self.navigationItem.title = @"Pictures"; self.navigationController.navigationBar.tintColor = [UIColor blackColor]; self.imgpicker = [[UIImagePickerController alloc] init]; self.imgpicker.allowsImageEditing = YES; self.imgpicker.delegate = self; self.imgpicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; [super viewDidLoad]; } I am not able to see the slide show tool bar at the bottom of the photo list view.I am able to see the slide show tab bar, when i directly click on photos application on my device.How can i add the slide show tool bar in my application.Please help me out.Thanks.

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  • xcode syntax color coding explained?

    - by Max Fraser
    Can anyone give me a quick rundown of the color syntax meanings in xcode? I am running into some problems and understanding the color coding I am sure will help me out. Currently I have some variables that are light blue and I think they need to be black but I am not sure of the difference? masterViewController=[[UINavigationController alloc] initWithDestination: destination]; I believe my masterViewController here should be colored black and not the light blue it is currently colored - I am assuming I defined or initialized something wrong somewhere. First day in xCode so I am pretty damn confused!

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  • Application crashes when running in iPhone simulator 3.2 (Works fine in simulator 3.0)

    - by amitabh
    I just upgraded to SDK 3.2. My application runs in Simulator 3.0 in debug mode but when I change the Simulator to run with 3.2 it crashes with EXEC_BAD_ACCESS. It is crashing at objc_msgsend method. int main(int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retVal = UIApplicationMain(argc, argv, nil, nil); <======== THE STACK TRACE starts here. [pool release]; return retVal; } Any idea what is going on? I have absolutely no clue. Any help/suggestion will be greatly appreciated? Thanks A

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  • Facebook: obtain album id just created with Photos.createAlbum

    - by VansFannel
    Hello. I'm developing an iPhone app that creates a Photo Album to hold the pictures that the user is going to upload. On - (void)request:(FBRequest*)request didLoad:(id)result { I'm trying to obtain the aid returned with this code: else if ([@"Photos.createAlbum" isEqualToString: request.method]) { NSLog(@"[Photos.createAlbum:dialogDidSucceed] succeed"); NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults]; NSString *aid = [[NSString alloc] initWithString: [request.params objectForKey:@"aid"]]; [prefs setObject:aid forKey:_ALBUMID]; [prefs synchronize]; //[prefs release]; [aid release]; if (pendingUploadImage) { [self btnUploadImage]; } } Here said that the aid is returned, but I don't know where. How can I obtain album id?

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  • MKMapView not calling delegate methods

    - by criscokid
    In a UIViewController I add a MKMapView to the view controlled by the controller. - (void)viewDidLoad { [super viewDidLoad]; CGRect rect = CGRectMake(0, 0, 460, 320); map = [[MKMapView alloc] initWithFrame:rect]; map.delegate = self; [self.view addSubview:map]; } Later in the controller I have - (void)mapViewDidFinishLoadingMap:(MKMapView *)mapView { NSLog(@"done."); } Done never gets printed. None of the other delegate methods get called either like mapView:viewForAnnotation: I use a MKMapView in an another app, but this seems to happen on any new application I make. Has anyone else seen this behavior? EDIT: The problem seems to be when UIViewController is made the delegate of the MKMapView, a direct subclass of NSObject seems to work okay. I can work around like this, still seems very odd since I've done it before.

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  • Objective-C - How To Remove Characters From a String?

    - by iAm
    I have a UILable that has a formatted String (formatted for currency), so there is a dollar sign, $21.34. In the core data entity the attribute is of a type double, I am using an NSDecimalNumber to save to the database. self.purchase.name = self.nameTextField.text; NSString *string = self.amountLabel.text NSDecimalNumber *newAmount = [[NSDecimalNumber alloc] initWithString:string]; NSLog(@"%@", string); // THIS RETURNS NaN, because of dollar sign i think NSManagedObjectContext *context = self.purchase.managedObjectContext; NSError *error = nil; if (![context save:&error]) { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } Anyway, I need this to not be NaN, so my thinking is to remove the dollar sign, but i do not know how to do that, or perhaps there is a better way to accomplish my goal.

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  • NSNumberFormatter customize?

    - by Frederick C. Lee
    I wish to use NSNumberFormatter to merely attached a percent ('%') to the supplied number WITHOUT having it multiplied by 100. The canned kCFNumberFormatterPercentStyle automatically x100 which I don't want. For example, converting 5.0 to 5.0% versus 500%. Using the following: NSNumberFormatter *percentFormatter = [[NSNumberFormatter alloc] init]; [percentFormatter setNumberFormat:@"##0.00%;-##0.00%"]; But 'setNumberFormat' doesn't exist in NSNumberFomatter. I need to use this NSNumberFormatter for my Core-Plot label. How can I customize NSNumberFormat? Ric.

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  • Frame of viewForHeaderInSection is always the same size

    - by gabac
    - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section { if(section != 0) { UIView *view = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 100, 30)]; view.backgroundColor = [UIColor redColor]; return view; [view release]; } else { return tableView.tableHeaderView; } } This is my implementation of viewForHeaderInSection but whatever frame I make it's always showing me the same red frame. Do you see any problem with my code? Can't post the picture because of my rep but here is the link ;-) http://img638.imageshack.us/img638/3350/bildschirmfoto20100315uq.png

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  • Release a retain UIImage property loaded via imageNamed?

    - by user158103
    In my class object i've defined a (nonatomic, retain) property for UIImage. I assigned this property with an image loaded via [UIImage imageNamed:@"file.png"]; If at some point I want to reassign this property to another image, should I have to release the prior reference? I am confused because by the retain property I know i should release it. But because imageNamed is a convenience method (does not use alloc), im not sure what rule to apply here. Thanks for the insight!

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  • My iPhone App doesn't work in iOS 4. Why?

    - by noflipes
    Hi everybody. I make a iPhone App that display some videos, I made it with Xcode 3.2.2 with iPhone SDK 3.1.3 and works fine. But a few days ago I downloaded the last version of the iPhone SDK for iOS 4, the proyect Build ok, no erros, no warnings, but when I run the aplication the video didn't work, the image didn't load but sound works. I don't understand it. Here is the code that I used. NSBundle *Bundle = [NSBundle mainBundle]; NSString *moviePath = [Bundle pathForResource:@"Prueba" ofType:@"mp4"]; NSURL *movieURL = [[NSURL fileURLWithPath:moviePath] retain]; MPMoviePlayerController *theMovie = [[MPMoviePlayerController alloc] initWithContentURL:movieURL]; theMovie.scalingMode = MPMovieScalingModeFill; [theMovie play]; Some idea? Best regards

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  • How to add uitoolbar to uitableviewcontroller?

    - by Jakub
    I have an UITableViewController which I would like to add UIToolbar to with one button. In the - (void)viewDidLoad; method of UITableViewController I have: - (void)viewDidLoad { [super viewDidLoad]; UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(pressButton1:)]; self.navigationItem.title = @"Some title"; self.navigationItem.leftBarButtonItem = button; } Unfortunately I don't see the toolbar when I run my app. Any hints? Should I do something more?

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  • UIImageWriteToSavedPhotosAlbum Problem

    - by Momeks
    Hi , i try to save a photo from camera after take a photo with a button . here is my codes: -(IBAction)takePic { ipc = [[UIImagePickerController alloc]init]; ipc.delegate = self; ipc.sourceType = UIImagePickerControllerSourceTypeCamera; [self presentModalViewController:ipc animated:YES]; } - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { img.image = [info objectForKey:UIImagePickerControllerOriginalImage]; [[picker parentViewController]dismissModalViewControllerAnimated:YES]; [picker release]; } but i dont know why doesnt save anything !

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  • UIVIewController wrong position before rotate

    - by zegnus
    I have the starter point of my application this window (white background): - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { mainScreen = [[MainScreenController alloc] initWithNibName:@"MainScreenController" bundle:[NSBundle mainBundle]]; // add it to the main window [window addSubview:[mainScreen view]]; // show view [window makeKeyAndVisible]; NSLog(@"started"); return YES; } And MainScreenController is an UIViewController with (blackBackground) created by the Interface Builder. The application executes perfectly but the first time, the black view is moved up like the height of the status iphone pannel (leaving white rectangle at the bottom). If I rotate the iPhone twice, the view is perfectly positioned in the right place, filling all the screen with the black background. Any idea? Thanks!

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  • Trying to understand NavigationController retain count for ViewControllers on its stack

    - by sharkan
    I have an UITableViewController as the rootViewController for my navigatorController. When I press a table cell I do the following: - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { MessageHistory *msg = (MessageHistory *)[[self fetchedResultsController]objectAtIndexPath:indexPath]; ConversationViewController *chatController = [[ConversationViewController alloc]initWithNibName:@"ConversationView" bundle:nil andUser:msg.user]; [self.navigationController pushViewController:chatController animated:YES]; [chatController release]; But when I'm returning from the chatController (using the back button on the navbar) I get “EXC_BAD_ACCESS” commenting //[chatController release]; solves the problem. How? I thought when pushing to the navigationController adds a retain count and when pop from it release it? Also I believe if I'm not including the release after pushing to the navcontroller I'm generating a leak. Any idea what's happening here?

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  • UITextView like iPhone Notes application

    - by Mark
    I am trying to recreate the Notes application. So far I got the following: textView = [[UITextView alloc] initWithFrame:CGRectMake(25.0, 30.0, 295.0, 214.0)]; textView.delegate = self; textView.backgroundColor = [UIColor clearColor]; textView.font = [UIFont fontWithName:@"MarkerFelt-Thin" size:19.0]; [self.view addSubview:textView]; The thing I dont know is how they were able to put the date on top like a header (it is within the UIScrollView that is obvious). Also under every text there is a line where did that came from. Does someone have an idea or a sample project I can take a look at?

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  • UITableView don't react on a tap

    - by aspcartman
    I have a fully working grouped tableview. But when i just tap on a cell - nothing happens. willSelectRowAtIndexPath is not even being called. All outlets are set correctly, userInteractions are enabled, tableView is the only view on a page. Googling for hours made no success. Everyone has a selection feature from the begining and someone even tries to ged rid of it. Help, please. Cell creation: UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"FriendCell"];

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  • After adding a UILabel to my view, how do I delete it?

    - by Travis
    I have added a UILabel to my view programmatically like this: myLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 30.0f)]; myLabel.center = CGPointMake(160.0f, 120.0f); myLabel.backgroundColor = [UIColor clearColor]; myLabel.textColor = [UIColor whiteColor]; myLabel.font = [UIFont fontWithName:@"Helvetica" size: 18.0]; myLabel.textAlignment = UITextAlignmentCenter; myLabel.text = @"Hello"; [self.myView addSubview:myLabel]; To add a label to my view. What I can't seem to find out is once I'm done w/ the label (at a future point) how can I delete it from the view? [myLabel release] doesn't seem to work which I think makes sense because the view it's added to probably retained it's over reference. So what is the best practice?

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  • POSTDATA, ASIHTTPrequest + instapaper

    - by Andrew
    Hi guys, I'm trying to use ASIHTTPRequest to submit links to instapaper (http://www.instapaper.com/api). I'm able to authenticate but I get a 400 response when trying to submit a link, so I'm clearly in need of figuring how to use postdata. Any help appreciated. Sample code attached. Thanks NSURL *url = [NSURL URLWithString:urlInstapaperAddUrl]; ASIHTTPRequest instapaperAuthRequest = [ASIHTTPRequest requestWithURL:url]; [instapaperAuthRequest setDelegate:self]; [instapaperAuthRequest setRequestMethod:@"PUT"]; NSData temp = [[NSData alloc] initWithData:[@"url=http://www.redhat.com" dataUsingEncoding:NSASCIIStringEncoding]]; [instapaperAuthRequest appendPostData:temp]; [instapaperAuthRequest addBasicAuthenticationHeaderWithUsername:@"myusername" andPassword:@"mypassword"]; [instapaperAuthRequest startAsynchronous];

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  • NSThread running a class

    - by Thomas Joulin
    Hi, Every the example I find on the internet (including Apple doc) sets the target to self like this : [NSThread detachNewThreadSelector:@selector(threadedTask) toTarget:self withObject:nil]; Since i would like to do a more complex task in background (involving multiple methods), I thought of creating a class Task called like this : Task *task = [[Task alloc] init]; [NSThread detachNewThreadSelector:@selector(main) toTarget:task withObject:nil]; but I wonder, how will be handled the instance variables of my class Task ? in my method main can I safely call methods of my class Task using [self myMethod] and modifying members variables assuming I'm the only thread accessing it ? This way of handling threads seems weird to me, sorry if my question is stupid ^^ Thanks in advance

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  • Second call to AVAudioPlayer -> EXC_BAD_ACCESS (code posted, what did I miss?)

    - by Jordan
    I'm using this code to play a different mp3 files with every call. The first time through works great. The second time crash, as indicated below. .h AVAudioPlayer *player; @property (nonatomic, retain) AVAudioPlayer *player; .m -(void)load:(NSURL *)aFileURL { if (aFileURL) { AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: aFileURL error: nil]; [aFileURL release]; self.player = newPlayer; // CRASHES HERE EXC_BAD_ACCESS with second MP3a [newPlayer release]; [self.player prepareToPlay]; [self.player setDelegate:self]; } } I know I must have missed something, any ideas?

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