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• NSString sizeWithFont: returning inconsistent results? known bug?

  - by Olof Hedman

  I'm trying to create a simple custom UIView wich contain a string drawn with a single font, but where the first character is slightly larger. I thought this would be easily implemented with two UILabel:s placed next to eachother. I use NSString sizeWithFont to measure my string to be able to lay it out correctly. But I noticed that the font baseline in the returned rectangle varies with +/- 1 pixel depending on the font size I set. Here is my code: NSString* ctxt = [text substringToIndex:1]; NSString* ttxt = [text substringFromIndex:1]; CGSize sz = [ctxt sizeWithFont: cfont ]; clbl = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, sz.width, sz.height)]; clbl.text = ctxt; clbl.font = cfont; clbl.backgroundColor = [UIColor clearColor]; [contentView addSubview:clbl]; CGSize sz2 = [ttxt sizeWithFont: tfont]; tlbl = [[UILabel alloc] initWithFrame:CGRectMake(sz.width, (sz.height - sz2.height), sz2.width, sz2.height)]; tlbl.text = ttxt; tlbl.font = tfont; tlbl.backgroundColor = [UIColor clearColor]; [contentView addSubview:tlbl]; If I use 12.0 and 14.0 as sizes, it works fine. But if I instead use 13.0 and 15.0, then the first character is 1 pixel too high. Is this a known problem? Any suggestions how to work around it? Creating a UIWebView with a CSS and HTML page seems way overkill for this. and more work to handle dynamic strings. Is that what I'm expected to do?

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• Is there an easy way to drag and drop a UITableViewCell between two UITableViews?

  - by Steve Simitzis

  As the title says. Reordering within a single UITableView is trivial, but the screen of the iPad is large enough to display multiple UITableViews at the same time. So it seems like there should be a way to drag and drop a UITableViewCell between two UITableViews. Any thoughts on the best approach?

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• UITabBarController's 'More' navigation controller disappears under UINavigationController

  - by lennox_19

  I am using a UITabBarController as well as a UINavigationController on my app. In my UITabBarController I am using more than 5 items so I automatically get the 'More' item. I've managed to add a saving procedure so the order of those items will be kept in case somebody changes the order etc. With 'More' active I get the More navigation controller with the 'Edit' item positioned under my UINavigationController. Both navigation controller are visible. When I click on 'Edit though the More navigation controller disappears and seem to be hiding under my UINavigationController and therefore I can't see/use the 'Done' function to save my new order What did I miss? Cheers

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• Outline view from UITableView

  - by Raj

  Hi guys, I need to implement a 1 level outline view out of UITableView. The cells which have children in them will have a '+' symbol and if user taps on it, the cells below it should slide down and the children cells of current selected row should appear. The sliding of cells should be visible and if the user taps '-' button of the already expanded row, the children cells should slide back into the parent. I have tried googling but did not find any pointers. How should I start, should I subclass UITableView? Or should I implement my own view sub-class and handle all the stuff there? I somehow feel it would be easier to sub-class UITableView because it will handle all the row selection for us, but I cannot figure out how to do it. Thanks and Regards, Raj

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• UITextView inside UIScrollView is not First Responder

  - by Sheehan Alam

  I have a UITextView on a View that becomes the first responder. When I embed the UITextView inside of a UIScrollView in Interface Builder the UITextView is no longer the first responder. I am not sure what has changed? - (void)viewDidLoad { [super viewDidLoad]; [scrollView setContentSize:CGSizeMake(540,620)]; composeTextView.delegate = self; [composeTextView becomeFirstResponder]; }

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• wait for CLLocationManager to finish before tweeting

  - by user295944

  I want to wait for latitude.text and longtitude.text to be filled in before sending a tweet, this code works fine, but I would rather not put the tweeting part in locationManager because I also want to sometimes update the current location without sending a tweet. How can I make sure the txt gets filled in before sending the tweet without doing this? - (IBAction)update { latitude.text =@""; longitude.text =@""; locmanager = [[CLLocationManager alloc] init]; [locmanager setDelegate:self]; [locmanager setDesiredAccuracy:kCLLocationAccuracyBest]; [locmanager startUpdatingLocation]; } - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { CLLocationCoordinate2D location = [newLocation coordinate]; latitude.text = [NSString stringWithFormat: @"%f", location.latitude]; longitude.text = [NSString stringWithFormat: @"%f", location.longitude]; TwitterRequest * t = [[TwitterRequest alloc] init]; t.username = @"****"; t.password = @"****"; [twitterMessageText resignFirstResponder]; loadingActionSheet = [[UIActionSheet alloc] initWithTitle:@"Posting To Twitter..." delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil]; [loadingActionSheet showInView:self.view]; [t statuses_update:twitterMessageText.text andLat:latitude.text andLong:longitude.text delegate:self requestSelector:@selector(status_updateCallback:)]; twitterMessageText.text=@""; }

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• Multiple View App shows Blank Screen in Simulator

  - by Brett Coburn

  Hello; I am developing a simple app that first shows a menu screen, and when a button is pressed, a game screen appears. I was able to develop the game screen without any issues, but when I changed the code to first display the menu, the simulator showed a blank screen. I've read all the articles on connecting views with IB but I can't figure this out. Any help would be appreciated. This is my code: // Pong_Multiple_ViewAppDelegate.h // Pong Multiple View // // Created by Brett on 10-05-19. // Copyright __MyCompanyName__ 2010. All rights reserved. // #import <UIKit/UIKit.h> @class MenuViewController; @interface Pong_Multiple_ViewAppDelegate : NSObject <UIApplicationDelegate> { UIWindow *window; MenuViewController *navigationController; } @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet MenuViewController *navigationController; @end // // Pong_Multiple_ViewAppDelegate.m // Pong Multiple View // // Created by Brett on 10-05-19. // Copyright __MyCompanyName__ 2010. All rights reserved. // #import "Pong_Multiple_ViewAppDelegate.h" #import "MenuViewController.h" @implementation Pong_Multiple_ViewAppDelegate @synthesize window; @synthesize navigationController; - (void)application:(UIApplication *)application{ // Override point for customization after application launch [window addSubview:[navigationController view]]; [window makeKeyAndVisible]; } - (void)dealloc { [navigationController release]; [window release]; [super dealloc]; } @end // // MenuViewController.h // Pong Multiple View // // Created by Brett on 10-05-19. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import <UIKit/UIKit.h> #import "GameViewController.h" @interface MenuViewController : UIViewController { GameViewController *gameViewController; IBOutlet UIButton *gameButton; } @property(nonatomic, retain) GameViewController *gameViewController; @property(nonatomic, retain) UIButton *gameButton; -(IBAction)switchPage:(id)sender; @end // // MenuViewController.m // Pong Multiple View // // Created by Brett on 10-05-19. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import "MenuViewController.h" #import "GameViewController.h" @implementation MenuViewController @synthesize gameViewController; @synthesize gameButton; -(IBAction)switchPage:(id)sender{ if (self.gameViewController==nil) { GameViewController *gameView = [[GameViewController alloc]initWithNibName:@"GameView" bundle:[NSBundle mainBundle]]; self.gameViewController= gameView; [gameView release]; } [self.navigationController pushViewController:self.gameViewController animated:YES]; } .... @end My code also includes classes: GameViewController.h, GameViewController.m, and nib files: MenuView.xib, and GameView.xib Thanks, B

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• selectedSegmentIndex not updating UISegmentControl

  - by munchine

  In my viewDidLoad, I'm retrieving user preferences and updating the settings tab. It is working for editSelection (see code) but the other NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]; BOOL editSelection = [userDefaults boolForKey:@"editToggleSwitch"]; editingToggle.selectedSegmentIndex = editSelection; // this is working! bToggle.selectedSegmentIndex = [[userDefaults objectForKey:@"bSegment"] intValue]; In the view, the editingToggle segment is displaying correctly but bToggle is always at 0? NSLog shows that the data was saved and retrieved correctly. I've even set bToggle.selectedSegmentIndex = 1; but it still does not reflect correctly in the view? Any ideas?

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• UIALertView - retreive textfield value from textfield added via code

  - by George

  Here is the code I have to create an UIalertView with a textbox. UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Enter A Username Here" message:@"this gets covered!" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:@"OK!", nil]; UITextField *myTextField = [[UITextField alloc] initWithFrame:CGRectMake(12, 45, 260, 25)]; CGAffineTransform myTransform = CGAffineTransformMakeTranslation(0, 60); [alert setTransform:myTransform]; alert.tag = kAlertSaveScore; [myTextField setBackgroundColor:[UIColor whiteColor]]; [alert addSubview:myTextField]; [alert show]; [alert release]; [myTextField release]; My question is, how do I get the value from the textfield in: - (void) alertView:(UIAlertView *) actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { } I know I can get the standard stuff for the alertview such as actionSheet.tag and such, but how would I get the above created textfield? Thanks in advance for any and all help. Geo...

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• Adding BarButtons to a UINavigationBar after presenting a modal view controller.

  - by yujean

  I'm using the template for a "Utility Application". In the "FlipSideViewController", I added an IBOutlet for a UINavigationController, navController. In the code, I added the navController just fine. The rootViewController loads perfectly: navController.viewControllers = [[NSArray arrayWithObject:rootViewController] retain]; [self.view addSubview:navController.view]; I changed the color of the navController just fine: navController.navigationBar.tintColor = [UIColor colorWithRed:0.6 green:0.75 blue:0.6 alpha:1.0]; navController.navigationBar.translucent = NO; I make a button (note: "done" refers to a IBAction that dismisses the modalviewcontroller): UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"TEST" style:UIBarButtonItemStyleDone target:self action:@selector(done:)]; I make a navItem using that button: UINavigationItem *backNavItem = [[UINavigationItem alloc] initWithTitle:@"TESTTEST"]; [backNavItem setRightBarButtonItem:backButton animated:YES]; I try to add that button: [navController.navigationBar pushNavigationItem:backNavItem animated:YES]; This above code fails miserably. I apparently can't add buttons to the navController because: * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Cannot call pushNavigationItem:animated: directly on a UINavigationBar managed by a controller.' Do I have to make a separate UINavigationBar that's somehow connected to my navController? I tried going that route but with no avail.

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• upload data and save it using ASIHTTP

  - by Srt

  I have a web page in which a value 'A' is constantly updated. I use ASIHttp to access the page contents and get this value 'A'. Based on A i calculate value X and i then i need to save this X to a webpage. I am able to get the data and am doing the calculation to get X. How do i upload and save the X to a webpage using ASIHTTP so that the X value can be used later. Thanks in advance.

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• App store name and info.plist

  - by user346194

  Hi guys, I've just completed my first app and having tested I'm ready for submission. However, despite numerous web searches and reading, I'm struggling to finalise the method required to enable me to have a different name on the app store to the name that appears under the app on the device home screen. In the plist.info file there is reference to bundle display name, executable name, bundle name, bundle identifier, product name etc. So, for example, say I would like the app store name to display as: HELLO WORLD and I would like the name below the icon on the device home screen to display as: HELLO How should I enter the data in the plist.info file to achieve the above? Many thanks in advance for your help. Gav.

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• Cocos2D: Problem Rotating a CCMenu

  - by srikanth rongali

  If I try to do actions over menuItems but the actions are not running as expected. I think code below should make the menuItem rotate by 90 degrees but when I run it, the menuItem translates from its coordinates to another coordinate then returns to its original coordinate. The complete translation takes 3 seconds. What I need is for the menuItem to rotate by 90 degrees in place within a 3 seconds duration. Please explain where I have done wrong? CCMenuItemImage *targetE;//Globally declared CCMenu *menu;//Globally declared -(id)init { if( (self = [super init]) ) { isTouchEnabled = YES; CGSize windowSize = [[CCDirector sharedDirector] winSize]; targetE = [CCMenuItemImage itemFromNormalImage:@"grossinis_sister1.png" selectedImage:@"grossinis_sister1.png" target:self selector:@selector(touch:)]; menu = [CCMenu menuWithItems:targetE,nil]; id action4 = [CCRotateBy actionWithDuration:3.0 angle:90]; [menu runAction: [CCSequence actions: action4, nil]]; menu.position = ccp(windowSize.width/2 + 200, windowSize.height/2); [self addChild: menu z:10]; } return self; } @end Thank You.

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• Need to Release UIWebView Delegate?

  - by Chris

  I have a UIWebView named wView. I want to use webViewDidFinishLoad: in my class, so I am setting the class as the delegate for wView by using this line: wView.delegate = self; Everything loads properly, but when I close the UIWebView, the App crashes. If I comment out the wView.delegate = self, it works and does not crash, but then I can't use webViewDidFinishLoad: - any ideas? Do I need to release something?

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• Converting NSMutableData to NSString Problem

  - by Sheehan Alam

  initWithData does not convert my data object into a string properly. When I check the length of the data object, it has a value. NSMutableData* receivedData =[[NSMutableData data] retain]; NSString* json_string = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding]; Am I doing something wrong creating the string?

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• NSXMLParser & memory leaks

  - by HBR

  Hi, I am parsing an XML file using a custom class that instanciates & uses NSXMLParser. On the first call everything is fine but on the second, third and later calls Instruments show tens of memory leaks on certain lines inside didEndElement, didEndElement and foundCharacters functions. I googled it and found some people having this issue, but I didn't find anything that could really help me. My Parser class looks like this : Parser.h @interface XMLParser : NSObject { NSMutableArray *data; NSMutableString *currentValue; NSArray *xml; NSMutableArray *videos; NSMutableArray *photos; NSXMLParser *parser; NSURLConnection *feedConnection; NSMutableData *downloadedData; Content *content; Video *video; BOOL nowPhoto; BOOL nowVideo; BOOL finished; BOOL webTV; } -(void)parseXML:(NSURL*)xmlURL; -(int)getCount; -(NSArray*)getData; //- (void)handleError:(NSError *)error; //@property(nonatomic, retain) NSMutableString *currentValue; @property(nonatomic, retain) NSURLConnection *feedConnection; @property(nonatomic, retain) NSMutableData *downloadedData; @property(nonatomic, retain) NSArray *xml; @property(nonatomic, retain) NSXMLParser *parser; @property(nonatomic, retain) NSMutableArray *data; @property(nonatomic, retain) NSMutableArray *photos; @property(nonatomic, retain) NSMutableArray *videos; @property(nonatomic, retain) Content *content; @property(nonatomic, retain) Video *video; @property(nonatomic) BOOL finished; @property(nonatomic) BOOL nowPhoto; @property(nonatomic) BOOL nowVideo; @property(nonatomic) BOOL webTV; @end Parser.m #import "Content.h" #import "Video.h" #import "Parser.h" #import <CFNetwork/CFNetwork.h> @implementation XMLParser @synthesize xml, parser, finished, nowPhoto, nowVideo, webTV; @synthesize feedConnection, downloadedData, data, content, photos, videos, video; -(void)parseXML:(NSURL*)xmlURL { /* NSURLRequest *req = [NSURLRequest requestWithURL:xmlURL]; self.feedConnection = [[[NSURLConnection alloc] initWithRequest:req delegate:self] autorelease]; [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; */ [[NSURLCache sharedURLCache] setMemoryCapacity:0]; [[NSURLCache sharedURLCache] setDiskCapacity:0]; NSXMLParser *feedParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL]; //NSXMLParser *feedParser = [[NSXMLParser alloc] initWithData:theXML]; [self setParser:feedParser]; [feedParser release]; [[self parser] setDelegate:self]; [[self parser] setShouldResolveExternalEntities:YES]; [[self parser] parse]; } - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict { if ([elementName isEqualToString:@"articles"]) { self.finished = NO; self.nowPhoto = NO; self.nowVideo = NO; self.webTV = NO; if (!data) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setData:tmp]; [tmp release]; return ; } } if ([elementName isEqualToString:@"WebTV"]) { self.finished = NO; self.nowPhoto = NO; self.nowVideo = NO; self.webTV = YES; if (!data) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setData:tmp]; [tmp release]; return ; } } if ([elementName isEqualToString:@"photos"]) { if (!photos) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setPhotos:tmp]; [tmp release]; return; } } if ([elementName isEqualToString:@"videos"]) { if (!videos) { NSMutableArray *tmp = [[NSMutableArray alloc] init]; [self setVideos:tmp]; [tmp release]; return; } } if ([elementName isEqualToString:@"photo"]) { self.nowPhoto = YES; self.nowVideo = NO; } if ([elementName isEqualToString:@"video"]) { self.nowPhoto = NO; self.nowVideo = YES; } if ([elementName isEqualToString:@"WebTVItem"]) { if (!video) { Video *tmp = [[Video alloc] init]; [self setVideo:tmp]; [tmp release]; } NSString *videoId = [attributeDict objectForKey:@"id"]; [[self video] setVideoId:[videoId intValue]]; } if ([elementName isEqualToString:@"article"]) { if (!content) { Content *tmp = [[Content alloc] init]; [self setContent:tmp]; [tmp release]; } NSString *contentId = [attributeDict objectForKey:@"id"]; [[self content] setContentId:[contentId intValue]]; return; } if ([elementName isEqualToString:@"category"]) { NSString *categoryId = [attributeDict objectForKey:@"id"]; NSString *parentId = [attributeDict objectForKey:@"parent"]; [[self content] setCategoryId:[categoryId intValue]]; [[self content] setParentId:[parentId intValue]]; categoryId = nil; parentId = nil; return; } if ([elementName isEqualToString:@"vCategory"]) { NSString *categoryId = [attributeDict objectForKey:@"id"]; NSString *parentId = [attributeDict objectForKey:@"parent"]; [[self video] setCategoryId:[categoryId intValue]]; [[self video] setParentId:[parentId intValue]]; categoryId = nil; parentId = nil; return; } } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if (!currentValue) { currentValue = [[NSMutableString alloc] initWithCapacity:1000]; } if (currentValue != @"\n") [currentValue appendString:string]; } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { NSString *cleanValue = [currentValue stringByReplacingOccurrencesOfString:@"\n" withString:@""] ; if ([elementName isEqualToString:@"articles"]) { self.finished = YES; //[content release]; } if ([elementName isEqualToString:@"article"]) { [[self data] addObject:[self content]]; [self setContent:nil]; [self setPhotos:nil]; [self setVideos:nil]; /* [content release]; content = nil; [videos release]; videos = nil; [photos release]; photos = nil; */ } if ([elementName isEqualToString:@"WebTVItem"]) { [[self data] addObject:[self video]]; [self setVideo:nil]; //[video release]; //video = nil; } if ([elementName isEqualToString:@"title"]) { //NSLog(@"Tit: %@",cleanValue); [[self content] setTitle:cleanValue]; } if ([elementName isEqualToString:@"vTitle"]) { [[self video] setTitle:cleanValue]; } if ([elementName isEqualToString:@"link"]) { //NSURL *url = [[NSURL alloc] initWithString:cleanValue] ; [[self content] setUrl:[NSURL URLWithString:cleanValue]]; [[self content] setLink: cleanValue]; //[url release]; //url = nil; } if ([elementName isEqualToString:@"vLink"]) { [[self video] setLink:cleanValue]; [[self video] setUrl:[NSURL URLWithString:cleanValue]]; } if ([elementName isEqualToString:@"teaser"]) { NSString *tmp = [cleanValue stringByReplacingOccurrencesOfString:@"##BREAK##" withString:@"\n"]; [[self content] setTeaser:tmp]; tmp = nil; } if ([elementName isEqualToString:@"content"]) { NSString *tmp = [cleanValue stringByReplacingOccurrencesOfString:@"##BREAK##" withString:@"\n"]; [[self content] setContent:tmp]; tmp = nil; } if ([elementName isEqualToString:@"category"]) { [[self content] setCategory:cleanValue]; } if ([elementName isEqualToString:@"vCategory"]) { [[self video] setCategory:cleanValue]; } if ([elementName isEqualToString:@"date"]) { [[self content] setDate:cleanValue]; } if ([elementName isEqualToString:@"vDate"]) { [[self video] setDate:cleanValue]; } if ([elementName isEqualToString:@"thumbnail"]) { [[self content] setThumbnail:[NSURL URLWithString:cleanValue]]; [[self content] setThumbnailURL:cleanValue]; } if ([elementName isEqualToString:@"vThumbnail"]) { [[self video] setThumbnailURL:cleanValue]; [[self video] setThumbnail:[NSURL URLWithString:cleanValue]]; } if ([elementName isEqualToString:@"vDirectLink"]){ [[self video] setDirectLink: cleanValue]; } if ([elementName isEqualToString:@"preview"]){ [[self video] setPreview: cleanValue]; } if ([elementName isEqualToString:@"thumbnail_position"]){ [[self content] setThumbnailPosition: cleanValue]; } if ([elementName isEqualToString:@"url"]) { if (self.nowPhoto == YES) { [[self photos] addObject:cleanValue]; } else if (self.nowVideo == YES) { [[self videos] addObject:cleanValue]; } } if ([elementName isEqualToString:@"photos"]) { [[self content] setPhotos:[self photos]]; //[photos release]; //photos = nil; self.nowPhoto = NO; } if ([elementName isEqualToString:@"videos"]) { [[self content] setVideos:[self videos]]; //[videos release]; //videos = nil; self.nowVideo = NO; } //[cleanValue release]; //cleanValue = nil; [currentValue release]; currentValue = nil; } - (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Error" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; } -(NSArray*)getData { return data; } -(int)getCount { return [data count]; } - (void)dealloc { [parser release]; //[data release]; //[photos release]; //[videos release]; //[video release]; //[content release]; [currentValue release]; [super dealloc]; } @end Somewhere in my code, I create an instance of this class : XMLParser* feed = [[XMLParser alloc] init]; [self setRssParser:feed]; [feed release]; // Parse feed NSString *url = [NSString stringWithFormat:@"MyXMLURL"]; [[self rssParser] parseXML:[NSURL URLWithString:url]]; Now the problem is that after the first (which has zero leaks), instruments shows leaks in too many parts like this one (they are too much to enumerate them all, but all the calls look the same, I made the leaking line bold) : in didEndElement : if ([elementName isEqualToString:@"link"]) { // THIS LINE IS LEAKING => INSTRUMENTS SAYS IT IS A NSCFString LEAK [self content] setUrl:[NSURL URLWithString:cleanValue]]; [[self content] setLink: cleanValue]; } Any idea how to fix this pealse ? Could this be the same problem as the one mentioned (as an apple bug) by Lee Amtrong here :http://stackoverflow.com/questions/1598928/nsxmlparser-leaking

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• Record AVAudioPlayer output using AVAudioRecorder

  - by Kieran

  In my app the user plays a sound by pressing a button. There are several buttons which can be played simultaneously. The sounds are played using AVAudioPlayer instances. I want to record the output of these instances using AVAudioRecorder. I have set it all up and a file is created and records but when I play it back it does not play any sound. It is just a silent file the length of the recording. Does anyone know if there is a setting I am missing with AVAudioPlayer or AVAudioRecorder? Thanks

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• Quartz2D and gradient line

  - by Fry Constantine

  how can i draw gradient line with quartz2d?

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• Refresh a UITableView after loading

  - by Alavoil

  I am trying to load a table view from a cache very quickly and have the cached data in the table view appear. Then I want download new data, and then reload the table. Right now I am downloading the new data on viewDidAppear, but the view still refreshes before it displays. Any idea how I can do this?

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• How do I insert data using a DetailsView into an access database without everything breaking?

  - by Steve

  Hey I'm getting the error: Data type mismatch in criteria expression. when I try to submit a DetailsView insert. Code for Default.aspx: (from inside an asp:Content tag) <asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="125px" AutoGenerateRows="False" DataKeyNames="user_id" DataSourceID="AccessDataSource1" CellPadding="4" ForeColor="#333333" GridLines="None"> <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <CommandRowStyle BackColor="#E2DED6" Font-Bold="True" /> <RowStyle BackColor="#F7F6F3" ForeColor="#333333" /> <FieldHeaderStyle BackColor="#E9ECF1" Font-Bold="True" /> <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" /> <Fields> <asp:BoundField DataField="email" HeaderText="email" SortExpression="email" /> <asp:BoundField DataField="password" HeaderText="password" SortExpression="password" /> <asp:BoundField DataField="users_name" HeaderText="users_name" SortExpression="users_name" /> <asp:BoundField DataField="image_path" HeaderText="image_path" SortExpression="image_path" /> <asp:BoundField DataField="mobile" HeaderText="mobile" SortExpression="mobile" /> <asp:BoundField DataField="twitter" HeaderText="twitter" SortExpression="twitter" /> <asp:TemplateField HeaderText="privacy_level_id" SortExpression="privacy_level_id"> <InsertItemTemplate> <asp:DropDownList ID="DropDownList2" runat="server" DataSourceID="AccessDataSource2" DataTextField="privacy_level_name" DataValueField="privacy_level_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource2" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [PrivacyLevels]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("date_of_birth") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="course_id" SortExpression="course_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList3" runat="server" DataSourceID="AccessDataSource3" DataTextField="course_name" DataValueField="course_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource3" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Courses]"> </asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList22" runat="server" DataSourceID="AccessDataSource22" DataTextField="privacy_level_name" DataValueField="privacy_level_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource22" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [PrivacyLevels]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList3" runat="server" DataSourceID="AccessDataSource3" DataTextField="course_name" DataValueField="course_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource3" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Courses]"></asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="nationality_id" SortExpression="nationality_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="AccessDataSource20" DataTextField="nationality_name" DataValueField="nationality_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource20" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Nationalities]"> </asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="AccessDataSource20" DataTextField="nationality_name" DataValueField="nationality_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource20" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Nationalities]"> </asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="AccessDataSource20" DataTextField="nationality_name" DataValueField="nationality_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource20" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Nationalities]"> </asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="residence_id" SortExpression="residence_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList4" runat="server" DataSourceID="AccessDataSource4" DataTextField="residence_name" DataValueField="residence_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource4" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Residences]"></asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList4" runat="server" DataSourceID="AccessDataSource4" DataTextField="residence_name" DataValueField="residence_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource4" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Residences]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList4" runat="server" DataSourceID="AccessDataSource4" DataTextField="residence_name" DataValueField="residence_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource4" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Residences]"></asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="course_year" HeaderText="course_year" SortExpression="course_year" /> <asp:TemplateField HeaderText="gender_id" SortExpression="gender_id"> <EditItemTemplate> <asp:DropDownList ID="DropDownList5" runat="server" DataSourceID="AccessDataSource5" DataTextField="gender_name" DataValueField="gender_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource5" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Genders]"></asp:AccessDataSource> </EditItemTemplate> <InsertItemTemplate> <asp:DropDownList ID="DropDownList5" runat="server" DataSourceID="AccessDataSource5" DataTextField="gender_name" DataValueField="gender_id"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource5" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Genders]"></asp:AccessDataSource> </InsertItemTemplate> <ItemTemplate> <asp:DropDownList ID="DropDownList5" runat="server" DataSourceID="AccessDataSource5" DataTextField="gender_name" DataValueField="gender_id" Enabled="False"> </asp:DropDownList> <asp:AccessDataSource ID="AccessDataSource5" runat="server" DataFile="~/App_Data/VisageFinal.mdb" SelectCommand="SELECT * FROM [Genders]"></asp:AccessDataSource> </ItemTemplate> </asp:TemplateField> <asp:CommandField ShowInsertButton="True" InsertText="Create my user!" /> </Fields> <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <EditRowStyle BackColor="#999999" /> <AlternatingRowStyle BackColor="White" ForeColor="#284775" /> </asp:DetailsView> <asp:Button ID="Button1" runat="server" Text="Button" /> <asp:AccessDataSource ID="AccessDataSource1" runat="server" DataFile="~/App_Data/VisageFinal.mdb" DeleteCommand="DELETE FROM [Users] WHERE [user_id] = ?" InsertCommand="INSERT INTO [Users] ([email], [password], [users_name], [image_path], [mobile], [twitter], [privacy_level_id], [nationality_id], [course_id], [residence_id], [course_year], [gender_id]) VALUES ('?', '?', '?', '?', '?', '?', ?, ?, ?, ?, ?, ?)" SelectCommand="SELECT * FROM [Users]" UpdateCommand="UPDATE [Users] SET [email] = ?, [password] = ?, [users_name] = ?, [date_of_birth] = ?, [image_path] = ?, [mobile] = ?, [twitter] = ?, [privacy_level_id] = ?, [nationality_id] = ?, [course_id] = ?, [residence_id] = ?, [has_set_privacy_level] = ?, [course_year] = ?, [gender_id] = ? WHERE [user_id] = ?"> <DeleteParameters> <asp:Parameter Name="user_id" Type="Int32" /> </DeleteParameters> <UpdateParameters> <asp:Parameter Name="email" Type="String" /> <asp:Parameter Name="password" Type="String" /> <asp:Parameter Name="users_name" Type="String" /> <asp:Parameter Name="image_path" Type="String" /> <asp:Parameter Name="mobile" Type="String" /> <asp:Parameter Name="twitter" Type="String" /> <asp:Parameter Name="privacy_level_id" Type="Int32" /> <asp:Parameter Name="nationality_id" Type="Int32" /> <asp:Parameter Name="course_id" Type="Int32" /> <asp:Parameter Name="residence_id" Type="Int32" /> <asp:Parameter Name="has_set_privacy_level" Type="Boolean" /> <asp:Parameter Name="course_year" Type="Int32" /> <asp:Parameter Name="gender_id" Type="Int32" /> <asp:Parameter Name="user_id" Type="Int32" /> </UpdateParameters> <InsertParameters> <asp:Parameter Name="email" Type="String" /> <asp:Parameter Name="password" Type="String" /> <asp:Parameter Name="users_name" Type="String" /> <asp:Parameter Name="image_path" Type="String" /> <asp:Parameter Name="mobile" Type="String" /> <asp:Parameter Name="twitter" Type="String" /> <asp:Parameter Name="privacy_level_id" Type="Int32" /> <asp:Parameter Name="nationality_id" Type="Int32" /> <asp:Parameter Name="course_id" Type="Int32" /> <asp:Parameter Name="residence_id" Type="Int32" /> <asp:Parameter Name="course_year" Type="Int32" /> <asp:Parameter Name="gender_id" Type="Int32" /> </InsertParameters> </asp:AccessDataSource> Any ideas what I've broken?

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• Why doesn't genstrings convert NSLocalizedStringFromTable entries to table.strings?

  - by juan tendero

  In my source code I have some lines like NSLocalizedStringFromTable(@"Info", @"en", @"Title of this view"). When I subsequently call genstrings -o en.lproj ./Classes/*.m I would not get the expected file en.strings but Localized.strings, although I've read in the genstrings-manpage that it would generate a table.strings file from NSLocalizedStringFromTable(a, table, c) function. Am I wrong? How would I create a table.strings file then?

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• Currency Mask

  - by Helena

  I need to create a currency mask. I did lines of command and it's works fine, but when i set the value in textfield, occurred infinit loop. I monitoring the textfield with Editing Changed behavior, to catch each caracter that the user set, but when i try to change the text value, the infinity loop happens. :( Somebody have a simple code?

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• UINavigation/TabBar transition animation

  - by sukitha

  How can I use UIViewAnimationTransition type in one of UINavigation/TabBar transitions? thanks

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• NSString - max 1 decimal of a float

  - by ncohen

  Hi everyone, I would like to use a float in a NSString. I used the stringWithFormat and a %f to integrate my float into the NSString. The problem is that I would like to display only one decimal (%.1f) but when there is no decimals I don't want to display a '.0' . How can I do that? Thanks

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• Custom UITableViewCell not properly hiding views

  - by adamweeks

  I am using apple's custom table view cell code and modifying the drawRect code within the cell's view to look like I want it to. I've changed it to have some UILabels as well as a UIProgressView. If the data the cell is being built on doesn't have a certain field, I want the UIProgressView to be hidden. This works for a little while, but when a cell gets requeued, the progress view will start displaying again, even when I set it to hidden = YES. I've tried just not creating the ProgressView unless the data was there and that didn't work either. I thought the answer was in the [self setNeedsDisplay] but that doesn't seem to help. Here is the code for the progressview from drawRect that continues to be displayed: UIProgressView *c1Progress = [[UIProgressView alloc]initWithFrame:CGRectMake(20.0, 70.0, 280.0, 12.0)]; float iProgress = (value / target); c1Progress.progress = iProgress; if (!dataExists) { c1Progress.hidden = YES; } [self addSubview:criteria1Progress]; [c1Progress release];

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