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• iphone uiscrollview and uiimageview - setting initial zoom

  - by Brodie4598

  I use the following code to load an image into an scroll view. The image always loads at 100% zoom. Is there a way to set it to load to another zoom level, say .37? UIImageView *tempImage = [[UIImageView alloc]initWithImage:[UIImage imageWithData:data]]; self.imageView = tempImage; scrollView.contentSize = CGSizeMake(imageView.frame.size.width , imageView.frame.size.height); scrollView.maximumZoomScale = 1; scrollView.minimumZoomScale = .37; scrollView.clipsToBounds = YES; scrollView.delegate = self; [scrollView addSubview:imageView];

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• iPad application crash in Apple review - cannot replicate in simulator, have crash log

  - by Mike

  I am clearly missing something obvious here and would really appreciate some input. I have tried repeatedly to submit an application to Apple (iPad in this case) that is crashing on their end when testing but I cannot replicated the situation on my end (obviously I only have the damned simulator to work with at this point). The crash log is as follows: Date/Time: 2010-04-01 05:39:47.226 -0700 OS Version: iPhone OS 3.2 (7B367) Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000, 0x00000000 Crashed Thread: 0 Thread 0 Crashed: 0 libSystem.B.dylib 0x000790a0 __kill + 8 1 libSystem.B.dylib 0x00079090 kill + 4 2 libSystem.B.dylib 0x00079082 raise + 10 3 libSystem.B.dylib 0x0008d20a abort + 50 4 libstdc++.6.dylib 0x00044a1c __gnu_cxx::__verbose_terminate_handler() + 376 5 libobjc.A.dylib 0x000057c4 _objc_terminate + 104 6 libstdc++.6.dylib 0x00042dee __cxxabiv1::__terminate(void (*)()) + 46 7 libstdc++.6.dylib 0x00042e42 std::terminate() + 10 8 libstdc++.6.dylib 0x00042f12 __cxa_throw + 78 9 libobjc.A.dylib 0x000046a4 objc_exception_throw + 64 10 CoreFoundation 0x00090c6e +[NSException raise:format:arguments:] + 74 11 CoreFoundation 0x00090d38 +[NSException raise:format:] + 28 12 Foundation 0x00002600 -[NSCFDictionary setObject:forKey:] + 184 13 iPadMosaic 0x00003282 -[iPadMosaicViewController getAlbumThumbs] (iPadMosaicViewController.m:468) 14 Foundation 0x000728fe __NSFireDelayedPerform + 314 15 CoreFoundation 0x00022d1c CFRunLoopRunSpecific + 2092 16 CoreFoundation 0x000224da CFRunLoopRunInMode + 42 17 GraphicsServices 0x000030d4 GSEventRunModal + 108 18 GraphicsServices 0x00003180 GSEventRun + 56 19 UIKit 0x000034c2 -[UIApplication _run] + 374 20 UIKit 0x000019ec UIApplicationMain + 636 21 iPadMosaic 0x00002234 main (main.m:14) 22 iPadMosaic 0x00002204 start + 32 My understanding here is that I am botching the Dictionary add somehow. The relevant lines of code are: for (NSDictionary *album in self.albumList) { // Get image for each album cover UIImage *albumCover; // Loop through photos to get URL of cover based on photo ID match NSString *coverURL = @""; for (NSDictionary *photo in self.photoList) { if ([[photo objectForKey:@"pid"] isEqualToString:[album objectForKey:@"cover_pid"]]) { coverURL = [photo objectForKey:@"src"]; } } NSURL *albumCoverURL = [NSURL URLWithString:coverURL]; NSData *albumCoverData = [NSData dataWithContentsOfURL:albumCoverURL]; albumCover = [UIImage imageWithData:albumCoverData]; if (albumCover == nil || albumCover == NULL) { //NSLog(@"No album cover for some reason"); albumCover = [UIImage imageNamed:@"noImage.png"]; } [[self.albumList objectAtIndex:albumCurrent] setObject:albumCover forKey:@"coverThumb"]; } This is part of a loop that runs over the existing dictionaries stored in an array. If retrieving the album cover fails for some reason the object is filled with a default image and then added. The last line of the code is what's showing up in the crash log. It runs fine in the simulator but crashes 100% in testing on device apparently. Can anyone tell me what I am missing here?

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• Autorotate UINavigationController based Application in IPhoneOS 3.0

  - by Shoaibi

  I have an application which have code like: window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // UIWindow *window; viewController = [TopicsViewController new]; //TopicsViewController *viewController; //This is a UITableViewController navigationController = [UINavigationController new]; // UINavigationController *navigationController; UIImageView *background = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"background.png"]]; [self.navigationController.view addSubview:background]; [self.navigationController.view sendSubviewToBack:background]; [navigationController pushViewController:viewController animated:YES]; [window addSubview:[navigationController view]]; [window makeKeyAndVisible]; Basically i am using UINavigationController and then push UITableViewController or sometime a UIViewController. UIViewController contain elements such as UITextView, UIImage, UIScrollView. Problem is i have been trying to make this application respond to iphone rotation e.g. when held in landscape, application should switch to landscape and vice versa, but nothing works so far.

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• Need additional help with binding multiple CommandParameters using MultiBinding

  - by Dave

  I need to have a command handler for a ToggleButton that can take multiple parameters, namely the IsChecked property of said ToggleButton, along with a constant value, which could be a string, byte, int... doesn't matter. I found this great question on SO and followed the answer's link and read up on MultiBinding and IMultiValueConverter. It went really smoothly until I had to write the MultiBinding, when I realized that I also need to pass a constant value and couldn't do something like <Binding Value="1" /> I then came across another similar question that Kent Boogaart answered, and then I started to think about ways that I could get around this. One possible way is to not use MVVM and simply add the Tag property to my ToggleButton, in which case my MultiBinding would look like this: <MultiBinding Converter="{StaticResource MyConverter}"> <MultiBinding.Bindings> <Binding Path="IsChecked" /> <Binding Path="Tag" /> </MultiBinding.Bindings> </MultiBinding> Kent had made a comment along the lines of, "if you're using MVVM you should be able to get around this issue". However, I'm not sure that's an option for me, even though I have adopted MVVM as my WPF pattern of necessity choice. The reason why I say this is that I have wayyyy more than one ToggleButton in the UserControl, and each of the ToggleButtons' Commands need to call the same function. But since they are ToggleButtons, I can't use the property bound to IsChecked in the ViewModel, because I don't know which one was last clicked. I suppose I could add another private property to keep track of this, but it seems a little silly. As far as the constant goes, I could probably get rid of this if I did the tracking idea, but not sure of any other way to get around it. Does anyone have good suggestions for me here? :) EDIT -- ok, so I need to update my bindings, which still don't work quite right: <ToggleButton Tag="1" Command="{Binding MyCommand}" Style="{StaticResource PassFailToggleButtonStyle}" HorizontalContentAlignment="Center" Background="Transparent" BorderBrush="Transparent" BorderThickness="0"> <ToggleButton.CommandParameter> <MultiBinding Converter="{StaticResource MyConverter}"> <MultiBinding.Bindings> <Binding Path="IsChecked" RelativeSource="{RelativeSource Mode=Self}" /> <Binding Path="Tag" RelativeSource="{RelativeSource Mode=Self}" /> </MultiBinding.Bindings> </MultiBinding> </ToggleButton.CommandParameter> </ToggleButton> IsChecked was working, but not Tag. I just realized that Tag is a string... duh. It's working now! The key was to use a RelativeSource of Self.

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• request for member view in something not a structure or union

  - by james

  Hi I have this error when i build my application iphone: request for member view in something not a structure or union on [CommuneSlider.view removeFromSuperview]; the code: - (void) CommuneSelected { CommuneDetailsViewController *com = [[CommuneDetailsViewController alloc] initWithNibName:@"CommuneDetailsViewController" bundle:nil]; UINavigationController *navig = [[UINavigationController alloc] initWithRootViewController:com]; [self setCommuneDetails:(CommuneDetailsViewController *) navig]; [navig setNavigationBarHidden:YES]; [com release]; [navig release]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:.8]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:window cache:YES]; [CommuneSlider.view removeFromSuperview]; [self.window addSubview:[CommuneDetails view]]; [UIView commitAnimations]; } need HELP

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• iphone - UIImagePickerController compressing video?

  - by Mike

  I am using a UIImagePickerController to get a video from the library. So, I am using this picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; picker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:picker.sourceType]; picker.allowsEditing = NO; picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie]; [self presentModalViewController:picker animated:YES]; [picker release]; As soon as I select the video and tap on CHOOSE, I see the message "Compressing Video" and it stays ages stuck... I waited for 5 minutes and the message was still there. Is there a way to prevent this? Why I cannot simply take a copy of the move as it is. I do not want any compressing... is there a way to solve this? thanks.

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• dismissModalViewControllerAnimated makes my app crash :(

  - by Koning Baard XIV

  I'm creating an iPad app, and I have two classes: NWRootViewController : UITableViewController and UINewFeedViewController : UIViewController. In NWRootViewController I have an UIBarButtonItem, which, when tapped, pops up a modal view controller called NWNewFeedViewController: // THIS CODE IS IN NWROOTVIEWCONTROLLER.M // New Feed -(IBAction)showNewFeedViewAction:(id)sender { [newFeedViewController setModalPresentationStyle:UIModalPresentationFormSheet]; [self presentModalViewController:newFeedViewController animated:YES]; } This works fine. However, in the NWNewFeedViewController's view, I have another UIBarButtonItem which does this when tapped: // THIS CODE IS IN NWNEWFEEDCONTROLLER.M // Buttons -(IBAction)cancelAction:(id)sender { [self dismissModalViewControllerAnimated:YES]; } When I tap this button, the app crashes with: 2010-04-10 12:39:46.703 News[580:207] *** -[NWDetailViewController cancelAction:]: unrecognized selector sent to instance 0x4741110 2010-04-10 12:39:46.705 News[580:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NWDetailViewController cancelAction:]: unrecognized selector sent to instance 0x4741110' 2010-04-10 12:39:46.705 News[580:207] Stack: ( 40878667, 2458187017, 41150267, 40613142, 40609810, 2776006, 4876265, 2776006, 3246293, 3255055, 3250242, 2899304, 2793965, 2825287, 49238396, 40419388, 40415304, 49232029, 49232226, 2817505 ) Can anyone help me? Thanks

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• uiview animation used to work on iphone sdk 2.2 and now it doesn't on sdk 3.0

  - by nico

  hello! I have an animation block that worked fine when runnung the app on iphone OS 2.2. Now I compile the same code for iphone OS 3.0 and it doesn't work. UIViewAnimationTransition trans = UIViewAnimationTransitionFlipFromLeft; [UIView beginAnimations: nil context: NULL]; UIView *forview = [[self view] superview]; [UIView setAnimationTransition: trans forView:forview cache: YES]; [UIView setAnimationDuration:1.0]; [[self navigationController] popViewControllerAnimated:NO]; [UIView commitAnimations]; What the code does, it uses the navigation controller to change the top most view, but with the flip transition and not with the built in one. any ideas on what might have change in the sdk or what I'm doing wrong? thanks!!

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• iPhone MFMailComposeViewController's "cancel" button displays Action Sheet w/ incorrect orientation.

  - by user211790

  I've been trying to add in-app email functionality and have been somewhat successful. The MailCompose view is displayed properly. But when "Cancel" is pressed the Action Sheet with "Delete", "Save as Draft" and "Cancel" animates in from the left as if the view controller is set to portrait mode*, yet the width (or height depending on how you look at it) is that of an action sheet in landscape mode as seen in the following image: http://dansandland.com/storage/screen-shot-2.png *The view controller is set to Landscape Left, both in the plist file and the shouldAutorotateToInterfaceOrientation method of all view controllers. MFMailComposeViewController code in a view controller: MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init]; controller.mailComposeDelegate = self; [controller setSubject:@"In app email..."]; [controller setMessageBody:@"...email body." isHTML:NO]; [self presentModalViewController:controller animated:YES]; [controller release]; Any ideas?

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• Strange problem with UIDocumentInteractionController

  - by Tùng Ð?

  I don't know what wrong with this code but everytime when I run the app, after the Menu is shown, the app crash. NSString * path = [[NSBundle mainBundle] pathForResource:@"tung" ofType:@"doc"]; UIDocumentInteractionController *docController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:path]]; docController.delegate = self; //[docController presentPreviewAnimated:YES]; CGRect rect = CGRectMake(0, 0, 300, 300); [docController presentOptionsMenuFromRect:rect inView:self.view animated:YES]; Error I got: * Terminating app due to uncaught exception 'NSGenericException', reason: '-[UIPopoverController dealloc] reached while popover is still visible.' What should I do now ?

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• Ipad/Iphone UIActionSheet

  - by SteveU

  Hi All, Ive only posted on here a couple of times and people have been very quick and very helpful when responding so thanks. Im trying to use the UIActionsheet element in my Ipad application. But just to confuse matters im using Cocos2d aswell. But here is my problem. If coding the actionsheet with out cocos2d you would use the following code. [actionSheet showInView:self.view]; However because im using cocos2d and there is no views as such the only thing i can think of to reference is the window.. But this is located in the appdelegate class. ive tried [actionSheet showInView:self.Window]; and i get errors any help?

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• How can you add a UIGestureRecognizer to a UIBarButtonItem as in the common undo/redo UIPopoverContr

  - by SG

  Problem In my iPad app, I cannot attach a popover to a button bar item only after press-and-hold events. But this seems to be standard for undo/redo. How do other apps do this? Background I have an undo button (UIBarButtonSystemItemUndo) in the toolbar of my UIKit (iPad) app. When I press the undo button, it fires it's action which is undo:, and that executes correctly. However, the "standard UE convention" for undo/redo on iPad is that pressing undo executes an undo but pressing and holding the button reveals a popover controller where the user selected either "undo" or "redo" until the controller is dismissed. The normal way to attach a popover controller is with presentPopoverFromBarButtonItem:, and I can configure this easily enough. To get this to show only after press-and-hold we have to set a view to respond to "long press" gesture events as in this snippet: UILongPressGestureRecognizer *longPressOnUndoGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPressOnUndoGesture:)]; //Broken because there is no customView in a UIBarButtonSystemItemUndo item [self.undoButtonItem.customView addGestureRecognizer:longPressOnUndoGesture]; [longPressOnUndoGesture release]; With this, after a press-and-hold on the view the method handleLongPressOnUndoGesture: will get called, and within this method I will configure and display the popover for undo/redo. So far, so good. The problem with this is that there is no view to attach to. self.undoButtonItem is a UIButtonBarItem, not a view. Possible solutions 1) [The ideal] Attach the gesture recognizer to the button bar item. It is possible to attach a gesture recognizer to a view, but UIButtonBarItem is not a view. It does have a property for .customView, but that property is nil when the buttonbaritem is a standard system type (in this case it is). 2) Use another view. I could use the UIToolbar but that would require some weird hit-testing and be an all around hack, if even possible in the first place. There is no other alternative view to use that I can think of. 3) Use the customView property. Standard types like UIBarButtonSystemItemUndo have no customView (it is nil). Setting the customView will erase the standard contents which it needs to have. This would amount to re-implementing all the look and function of UIBarButtonSystemItemUndo, again if even possible to do. Question How can I attach a gesture recognizer to this "button"? More specifically, how can I implement the standard press-and-hold-to-show-redo-popover in an iPad app? Ideas? Thank you very much, especially if someone actually has this working in their app (I'm thinking of you, omni) and wants to share...

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• UIWebView loading slow if using baseUrl

  - by ashish

  this works very well and fast but it does not load images if I give baseurl instead of nil. It takes few seconds to load. NSURL *myUrl = [[NSURL alloc] initFileURLWithPath:self.contentPath]; //NSLog(@”Content url is %@”,myUrl); NSString *string = [[NSString alloc]initWithContentsOfFile:self.contentPath encoding:NSASCIIStringEncoding error:nil]; [contentDisplay loadHTMLString:string baseURL:nil]; //here nil if replaced by myUrl webView takes time to load. Any help ? [string release]; [myUrl release];

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• Pylons FormEncode @validate decorator pass parameters into re-render action

  - by joelbw

  I am attempting to use the validate decorator in Pylons with FormEncode and I have encountered an issue. I am attempting to validate a form on a controller action that requires parameters, and if the validation fails, the parameters aren't passed back in when the form is re-rendered. Here's an example. def question_set(self, id): c.question_set = meta.Session.query(QuestionSet).filter_by(id=id).first() c.question_subjects = meta.Session.query(QuestionSubject).order_by(QuestionSubject.name).all() return render('/derived/admin/question_set.mako') This is the controller action that contains my form. The form will add questions to an existing question set, which is identified by id. My add question controller action looks like this: @validate(schema=QuestionForm(), form='question_set', post_only=True) def add_question(self): stuff... Now, if the validation fails FormEncode attempts to redisplay the question_set form, but it does not pass the id parameter back in, so the question set form will not render. Is it possible to pass the id back in with the @validate decorator, or do I need to use a different method to achieve what I am attempting to do?

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• Django admin site populated combo box based on imput

  - by user292652

  hi i have to following model class Match(models.Model): Team_one = models.ForeignKey('Team', related_name='Team_one') Team_two = models.ForeignKey('Team', related_name='Team_two') Stadium = models.CharField(max_length=255, blank=True) Start_time = models.DateTimeField(auto_now_add=False, auto_now=False, blank=True, null=True) Rafree = models.CharField(max_length=255, blank=True) Judge = models.CharField(max_length=255, blank=True) Winner = models.ForeignKey('Team', related_name='winner', blank=True) updated = models.DateTimeField('update date', auto_now=True ) created = models.DateTimeField('creation date', auto_now_add=True ) def save(self, force_insert=False, force_update=False): pass @models.permalink def get_absolute_url(self): return ('view_or_url_name') class MatchAdmin(admin.ModelAdmin): list_display = ('Team_one','Team_two', 'Winner') search_fields = ['Team_one','Team_tow'] admin.site.register(Match, MatchAdmin) i was wondering is their a way to populated the winner combo box once the team one and team two is selected in admin site ?

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• Doctrine 2 Cannot find entites

  - by Flyn San

  I'm using Kohana 3 and have a /doctrine/Entites folder with my entities inside. When executing the code $product = Doctrine::em()->find('Entities\Product', 1); in my controller, I get the error class_parents(): Class Entities\Product does not exist and could not be loaded Below is the Controller (classes/controller/welcome.php): <?php class Controller_Welcome extends Controller { public function action_index() { $prod = Doctrine::em()->find('Entities\Product', 1); } } Below is the Entity (/doctrine/Entities/Product.php): <?php /** * @Entity * @Table{name="products"} */ class Product { /** @Id @Column{type="integer"} */ private $id; /** @Column(type="string", length="255") */ private $name; public function getId() { return $this->id; } public function setId($id) { $this->id = intval($id); } public function getName() { return $this->name; } public function setName($name) { $this->name = $name; } } Below is the Doctrine module bootstrap file (/modules/doctrine/init.php): class Doctrine { private static $_instance = null; private $_application_mode = 'development'; private $_em = null; public static function em() { if ( self::$_instance === null ) self::$_instance = new Doctrine(); return self::$_instance->_em; } public function __construct() { require __DIR__.'/classes/doctrine/Doctrine/Common/ClassLoader.php'; $classLoader = new \Doctrine\Common\ClassLoader('Doctrine', __DIR__.'/classes/doctrine'); $classLoader->register(); $classLoader = new \Doctrine\Common\ClassLoader('Symfony', __DIR__.'/classes/doctrine/Doctrine'); $classLoader->register(); $classLoader = new \Doctrine\Common\ClassLoader('Entities', APPPATH.'doctrine'); $classLoader->register(); //Set up caching method $cache = $this->_application_mode == 'development' ? new \Doctrine\Common\Cache\ArrayCache : new \Doctrine\Common\Cache\ApcCache; $config = new Configuration; $config->setMetadataCacheImpl( $cache ); $driver = $config->newDefaultAnnotationDriver( APPPATH.'doctrine/Entities' ); $config->setMetadataDriverImpl( $driver ); $config->setQueryCacheImpl( $cache ); $config->setProxyDir( APPPATH.'doctrine/Proxies' ); $config->setProxyNamespace('Proxies'); $config->setAutoGenerateProxyClasses( $this->_application_mode == 'development' ); $dbconf = Kohana::config('database'); $dbconf = reset($dbconf); //Use the first database specified in the config $this->_em = EntityManager::create(array( 'dbname' => $dbconf['connection']['database'], 'user' => $dbconf['connection']['username'], 'password' => $dbconf['connection']['password'], 'host' => $dbconf['connection']['hostname'], 'driver' => 'pdo_mysql', ), $config); } } Any ideas what I've done wrong?

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• drawRect not being called in my subclass of UIImageView

  - by Ben Collins

  I have subclassed UIImageView and tried to override drawRect so I could draw on top of the image using Quartz 2D. I know this is a dumb newbie question, but I'm not seeing what I did wrong. Here's the interface: #import <UIKit/UIKit.h> @interface UIImageViewCustom : UIImageView { } - (void)drawRect:(CGRect)rect; And the implementation: #import "UIImageViewCustom.h" @implementation UIImageViewCustom - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { } return self; } - (void)drawRect:(CGRect)rect { // do stuff } I set a breakpoint on drawRect and it never hits, leading me to think it never gets called at all. Isn't it supposed to be called when the view first loads? Have I incorrectly overridden it?

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• Center content of UISCrollView when smaller

  - by hgpc

  I have an UIImageView inside a UIScrollView which I use for zooming and scrolling. If the image/content of the scroll view if bigger than the scroll view everything works fine. However, when the image becomes smaller than the scroll view, it sticks to the top left corner of the scroll view. I would like to keep it centered, like the Photos app. Any ideas or examples about keeping the content of the UIScrollView centered when smaller? I am working with iPhone 3.0. The following code almost works. The image returns to the top left corner if I pinch it after reaching the minimum zoom level. - (void)loadView { [super loadView]; // set up main scroll view imageScrollView = [[UIScrollView alloc] initWithFrame:[[self view] bounds]]; [imageScrollView setBackgroundColor:[UIColor blackColor]]; [imageScrollView setDelegate:self]; [imageScrollView setBouncesZoom:YES]; [[self view] addSubview:imageScrollView]; UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"WeCanDoIt.png"]]; [imageView setTag:ZOOM_VIEW_TAG]; [imageScrollView setContentSize:[imageView frame].size]; [imageScrollView addSubview:imageView]; CGSize imageSize = imageView.image.size; [imageView release]; CGSize maxSize = imageScrollView.frame.size; CGFloat widthRatio = maxSize.width / imageSize.width; CGFloat heightRatio = maxSize.height / imageSize.height; CGFloat initialZoom = (widthRatio heightRatio) ? heightRatio : widthRatio; [imageScrollView setMinimumZoomScale:initialZoom]; [imageScrollView setZoomScale:1]; float topInset = (maxSize.height - imageSize.height) / 2.0; float sideInset = (maxSize.width - imageSize.width) / 2.0; if (topInset < 0.0) topInset = 0.0; if (sideInset < 0.0) sideInset = 0.0; [imageScrollView setContentInset:UIEdgeInsetsMake(topInset, sideInset, -topInset, -sideInset)]; } - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView { return [imageScrollView viewWithTag:ZOOM_VIEW_TAG]; } /************************************** NOTE **************************************/ /* The following delegate method works around a known bug in zoomToRect:animated: */ /* In the next release after 3.0 this workaround will no longer be necessary */ /**********************************************************************************/ - (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale { [scrollView setZoomScale:scale+0.01 animated:NO]; [scrollView setZoomScale:scale animated:NO]; // END Bug workaround CGSize maxSize = imageScrollView.frame.size; CGSize viewSize = view.frame.size; float topInset = (maxSize.height - viewSize.height) / 2.0; float sideInset = (maxSize.width - viewSize.width) / 2.0; if (topInset < 0.0) topInset = 0.0; if (sideInset < 0.0) sideInset = 0.0; [imageScrollView setContentInset:UIEdgeInsetsMake(topInset, sideInset, -topInset, -sideInset)]; }

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• Passing touch events on to subviews

  - by Egil Jansson

  I have a view within a UIScrollView that loads an additional subview when the user presses a certain area. When this additional subview is visible, I want all touch events to be handled by this - and not by the scrollview. It seems like the first couple events are being handled by the subview, but then touchesCancelled is called and the scrollview takes over the touch detection. How can I make sure that the subview gets all the events as long as the movement activity is being performed on this view? This is my implementation on touchesMoved - which I thought would do the job... -(void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[touches allObjects] objectAtIndex:0]; CGPoint touchPt = [touch locationInView:self]; UIView *hitView = [self hitTest:touchPt withEvent:event]; UIView *mySubView = subviewCtrl.view; if(hitView == mySubView) { [subviewCtrl.view touchesMoved:touches withEvent:event]; } else { NSLog(@"Outside of view..."); } }

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• Empty "Groups" in People Picker Navigation Controller

  - by Meltemi

  I'm using the standard People Picker Navigation Controller to let users associate one of their contacts with one of my objects. It presents itself as a long list of ALL contacts. The back button (top left) says "Groups" but when clicked on it shows an empty screen...even when there are many Groups in the user's address book. I've read through the docs and can't seem to find how to populate the Groups area. Here's how I present the people picker. Fairly standard: - (IBAction)showPicker:(id)sender { ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init]; picker.peoplePickerDelegate = self; [self presentModalViewController:picker animated:YES]; [picker release]; } What am I missing?

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• django-admin: creating,saving and relating a m2m model

  - by pastylegs

  I have two models: class Production(models.Model): gallery = models.ManyToManyField(Gallery) class Gallery(models.Model): name = models.CharField() I have the m2m relationship in my productions admin, but I want that functionality that when I create a new Production, a default gallery is created and the relationship is registered between the two. So far I can create the default gallery by overwriting the productions save: def save(self, force_insert=False, force_update=False): if not ( Gallery.objects.filter(name__exact="foo").exists() ): g = Gallery(name="foo") g.save() self.gallery.add(g) This creates and saves the model instance (if it doesn't already exist), but I don't know how to register the relationship between the two?

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• MPMoviePlayerContentPreloadDidFinishNotification does not fire [iPhone]

  - by JOKe

  I'm running into a problem with the MPMoviePlayerContentPreloadDidFinishNotification notification. I've regisered to recieve the MPMoviePlayerContentPreloadDidFinishNotification notification and MPMoviePlayerPlaybackDidFinishNotification but the first one never fires. Is this bug in Firmware OS 3.0 ? maybe fixed in 3.1 ? or ? Because my divice and similator is 3.0 maybe this is a bug ? My code : ... [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(MovieDidLoad:) name:MPMoviePlayerContentPreloadDidFinishNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(MovieDidLoad:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; ... -(void)MovieDidLoad:(NSNotification*)notification { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Notification Listener" message:@"Notification Listener invoked" cancelButtonTitle:@"Ok dude!" otherButtonTitles:nil]; [alert show]; [alert release]; } The MPMoviePlayerPlaybackDidFinishNotification is always fired but MPMoviePlayerContentPreloadDidFinishNotification is never fired. Any ideas ?

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• Configuration problems with django and mod_wsgi

  - by Jimbo

  Hi, I've got problems on getting django to work on apache 2.2 with mod_wsgi. Django is installed and mod_wsgi too. I can even see a 404 page when accessing the path and I can login to django admin. But if I want to install the tagging module I get the following error: Traceback (most recent call last): File "setup.py", line 49, in <module> version_tuple = __import__('tagging').VERSION File "/home/jim/django-tagging/tagging/__init__.py", line 3, in <module> from tagging.managers import ModelTaggedItemManager, TagDescriptor File "/home/jim/django-tagging/tagging/managers.py", line 5, in <module> from django.contrib.contenttypes.models import ContentType File "/usr/lib/python2.5/site-packages/django/contrib/contenttypes/models.py", line 1, in <module> from django.db import models File "/usr/lib/python2.5/site-packages/django/db/__init__.py", line 10, in <module> if not settings.DATABASE_ENGINE: File "/usr/lib/python2.5/site-packages/django/utils/functional.py", line 269, in __getattr__ self._setup() File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 40, in _setup self._wrapped = Settings(settings_module) File "/usr/lib/python2.5/site-packages/django/conf/__init__.py", line 75, in __init__ raise ImportError, "Could not import settings '%s' (Is it on sys.path? Does it have syntax errors?): %s" % (self.SETTINGS_MODULE, e) ImportError: Could not import settings 'mysite.settings' (Is it on sys.path? Does it have syntax errors?): No module named mysite.settings My httpd.conf: Alias /media/ /home/jim/django/mysite/media/ <Directory /home/jim/django/mysite/media> Order deny,allow Allow from all </Directory> Alias /admin/media/ "/usr/lib/python2.5/site-packages/django/contrib/admin/media/" <Directory "/usr/lib/python2.5/site-packages/django/contrib/admin/media/"> Order allow,deny Allow from all </Directory> WSGIScriptAlias /dj /home/jim/django/mysite/apache/django.wsgi <Directory /home/jim/django/mysite/apache> Order deny,allow Allow from all </Directory> My django.wsgi: import sys, os sys.path.append('/home/jim/django') sys.path.append('/home/jim/django/mysite') os.chdir('/home/jim/django/mysite') os.environ['DJANGO_SETTINGS_MODULE'] = 'mysite.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() I try to get this to work since a few days and have read several blogs and answers here on so but nothing worked.

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• iphone how to remove modal uiviewcontroller from memory

  - by Scott Pendleton

  I have a root UIViewController which has a property called webView. WebView is a UIViewController with a XIB that contains a UIWebView. From my root view I modally (is there any other way?) load the webView ViewController and set its URL, always to the same page. I discovered that if, after loading the webView, I used its default Web page to navigate to another Web page, and then closed the webView and returned to the root controller -- AND THEN reopened the webView, that the webView was not showing the default page but rather the page I navigated to, which means the webView ViewController never got destroyed and removed from memory. This strikes me as very bad. So in the root ViewController, I added this code under viewWillAppear:animated -- if (self.webView != nil) { self.webView = nil) } Is that sufficient? Is there a better way?

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• Iphone NSXMLParser NSCFString memory leak

  - by atticusalien

  I am building an app that parses an rss feed. In the app there are two different types of feeds with different names for the elements in the feed, so I have created an NSXMLParser NSObject that takes the name of the elements of each feed before parsing. Here is my code: NewsFeedParser.h #import @interface NewsFeedParser : NSObject { NSInteger NewsSelectedCategory; NSXMLParser *NSXMLNewsParser; NSMutableArray *newsCategories; NSMutableDictionary *NewsItem; NSMutableString *NewsCurrentElement, *NewsCurrentElement1, *NewsCurrentElement2, *NewsCurrentElement3; NSString *NewsItemType, *NewsElement1, *NewsElement2, *NewsElement3; NSInteger NewsNumElements; } - (void) parseXMLFileAtURL:(NSString *)URL; @property(nonatomic, retain) NSString *NewsItemType; @property(nonatomic, retain) NSString *NewsElement1; @property(nonatomic, retain) NSString *NewsElement2; @property(nonatomic, retain) NSString *NewsElement3; @property(nonatomic, retain) NSMutableArray *newsCategories; @property(assign, nonatomic) NSInteger NewsNumElements; @end NewsFeedParser.m #import "NewsFeedParser.h" @implementation NewsFeedParser @synthesize NewsItemType; @synthesize NewsElement1; @synthesize NewsElement2; @synthesize NewsElement3; @synthesize newsCategories; @synthesize NewsNumElements; - (void)parserDidStartDocument:(NSXMLParser *)parser{ } - (void)parseXMLFileAtURL:(NSString *)URL { newsCategories = [[NSMutableArray alloc] init]; URL = [URL stringByReplacingOccurrencesOfString:@" " withString:@""]; URL = [URL stringByReplacingOccurrencesOfString:@"\n" withString:@""]; URL = [URL stringByReplacingOccurrencesOfString:@" " withString:@""]; //you must then convert the path to a proper NSURL or it won't work NSURL *xmlURL = [NSURL URLWithString:URL]; // here, for some reason you have to use NSClassFromString when trying to alloc NSXMLParser, otherwise you will get an object not found error // this may be necessary only for the toolchain [[NSURLCache sharedURLCache] setMemoryCapacity:0]; [[NSURLCache sharedURLCache] setDiskCapacity:0]; NSXMLNewsParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL]; // Set self as the delegate of the parser so that it will receive the parser delegate methods callbacks. [NSXMLNewsParser setDelegate:self]; // Depending on the XML document you're parsing, you may want to enable these features of NSXMLParser. [NSXMLNewsParser setShouldProcessNamespaces:NO]; [NSXMLNewsParser setShouldReportNamespacePrefixes:NO]; [NSXMLNewsParser setShouldResolveExternalEntities:NO]; [NSXMLNewsParser parse]; [NSXMLNewsParser release]; } - (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError { NSString * errorString = [NSString stringWithFormat:@"Unable to download story feed from web site (Error code %i )", [parseError code]]; NSLog(@"error parsing XML: %@", errorString); UIAlertView * errorAlert = [[UIAlertView alloc] initWithTitle:@"Error loading content" message:errorString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [errorAlert show]; [errorAlert release]; [errorString release]; } - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ NewsCurrentElement = [elementName copy]; if ([elementName isEqualToString:NewsItemType]) { // clear out our story item caches... NewsItem = [[NSMutableDictionary alloc] init]; NewsCurrentElement1 = [[NSMutableString alloc] init]; NewsCurrentElement2 = [[NSMutableString alloc] init]; if(NewsNumElements == 3) { NewsCurrentElement3 = [[NSMutableString alloc] init]; } } } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{ if ([elementName isEqualToString:NewsItemType]) { // save values to an item, then store that item into the array... [NewsItem setObject:NewsCurrentElement1 forKey:NewsElement1]; [NewsItem setObject:NewsCurrentElement2 forKey:NewsElement2]; if(NewsNumElements == 3) { [NewsItem setObject:NewsCurrentElement3 forKey:NewsElement3]; } [newsCategories addObject:[[NewsItem copy] autorelease]]; [NewsCurrentElement release]; [NewsCurrentElement1 release]; [NewsCurrentElement2 release]; if(NewsNumElements == 3) { [NewsCurrentElement3 release]; } [NewsItem release]; } } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { //NSLog(@"found characters: %@", string); // save the characters for the current item... if ([NewsCurrentElement isEqualToString:NewsElement1]) { [NewsCurrentElement1 appendString:string]; } else if ([NewsCurrentElement isEqualToString:NewsElement2]) { [NewsCurrentElement2 appendString:string]; } else if (NewsNumElements == 3 && [NewsCurrentElement isEqualToString:NewsElement3]) { [NewsCurrentElement3 appendString:string]; } } - (void)dealloc { [super dealloc]; [newsCategories release]; [NewsItemType release]; [NewsElement1 release]; [NewsElement2 release]; [NewsElement3 release]; } When I create an instance of the class I do like so: NewsFeedParser *categoriesParser = [[NewsFeedParser alloc] init]; if(newsCat == 0) { categoriesParser.NewsItemType = @"article"; categoriesParser.NewsElement1 = @"category"; categoriesParser.NewsElement2 = @"catid"; } else { categoriesParser.NewsItemType = @"article"; categoriesParser.NewsElement1 = @"category"; categoriesParser.NewsElement2 = @"feedUrl"; } [categoriesParser parseXMLFileAtURL:feedUrl]; newsCategories = [[NSMutableArray alloc] initWithArray:categoriesParser.newsCategories copyItems:YES]; [self.tableView reloadData]; [categoriesParser release]; If I run the app with the leaks instrument, the leaks point to the [NSXMLNewsParser parse] call in the NewsFeedParser.m. Here is a screen shot of the Leaks instrument with the NSCFStrings leaking: http://img139.imageshack.us/img139/3997/leaks.png For the life of me I can't figure out where these leaks are coming from. Any help would be greatly appreciated.

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