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  • iphone/ipad adding adding and removing a subview doesnt work

    - by Mark
    Im have a slight amount of trouble adding a new view to my scene, I have the code like this: - (void) showMyDayView { NSLog(@"My Day View was touched"); MyDayViewController *temp = [[MyDayViewController alloc] initWithNibName: @"MyDayView" bundle:nil]; self.myDayViewController = temp; NSLog(@"superview: %@", [[self mainNavView] superview]); [[self mainNavView] removeFromSuperview]; NSLog(@"after removal main: %@", [self mainNavView]); NSLog(@"after removal view: %@", [self view]); NSLog(@"after removal superview: %@", [[self view] superview]); [[[self view] superview] addSubview: [self.myDayViewController view]]; [temp release]; } And when I run this code, the console says "after removal superview: (null)" so when I add the subView to the superview, nothing happens because the superview is null. Any ideas? Thanks Mark

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  • Scroll UITableViewCell above keyboard for small tableview

    - by JK
    I have a tableview which is added to a UIViewController as the tableview only fills the bottom 3/4 of the screen.The rows contain editable UITextFields. When a field is tapped, the keyboard appears but the table does not scroll upwards as would normally be the case. Consequently, the keyboard obscures the field being edited. I have tried calling [tableView scrollToRowAtIndexPath:(NSIndexPath *)indexPath atScrollPosition:(UITableViewScrollPosition)scrollPosition animated:(BOOL)animated] but this has no effect if the table contains only a few rows. How can I get the table to scroll a specific cell above the keyboard? Thank you

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  • How To Parse A Website?

    - by Jamie
    Hey I would like to build an app that could parse a website in order to get specific information. Specifically something that can parse http://www.fedex.com/Tracking?language=english&cntry_code=us&tracknumbers=681780934297262 for the important information. Is there a tutorial out there I could use.

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  • Solving iPhone/iPad out of memory issues

    - by Joonas Trussmann
    I have a strange issue where I'm scrolling through a paged UIScrollView which displays the pages of a PDF document (using Quartz 2D and CATiledLayer). When I page through memory allocation looks fine with it going up with a few initial pages and then keeping it steady as it obviously releases the memory kept for earlier pages. Upon hitting page x (not a certain PDF page or a certain number per se) memory usage goes from a couple of megs to 308 megs and the app crashes. So my question is: how to best try to find what's causing this? The object alloc tool in instruments shows the memory as simply going to malloc. (in huge chunks).

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  • UIViewController dismissModalViewControllerAnimated: causes main window to disappear

    - by Jim
    I want to present a modal mail dialogue like so in the iPad app: MFMailComposeViewController* picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; [picker setSubject:title]; [picker setMessageBody:[NSString stringWithFormat:[self emailBody], title, [link absoluteString]] isHTML:YES]; [self.viewController presentModalViewController:picker animated:YES]; The following delegate is called when the user sends/cancels: - (void) mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { [self.viewController dismissModalViewControllerAnimated:YES]; } This works great in portrait mode. In landscape mode the right hand pane of the UISplitViewController completely disappears.

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  • UITableView madness

    - by kesrut
    Hello, I'm new to iPhone application development. I'm trying to understand how to use UITableView. I'm wrote simple code: - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return 1 ; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *MyIdentifier = @"MyIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier] autorelease]; } cell.textLabel.text = @"Hello"; return cell; } UITable shows content, but if i'm drag table contents my application terminates. You can see video: http://www.youtube.com/watch?v=TucTVJVhSD0 I tried to everything with array: - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1 ; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [hello count] ; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *MyIdentifier = @"MyIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MyIdentifier] autorelease]; } cell.textLabel.text = [hello objectAtIndex:indexPath.row]; return cell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [tableView deselectRowAtIndexPath:indexPath animated:NO]; NSLog(@"Selected") ; } - (void) awakeFromNib { hello = [[NSArray alloc] initWithObjects:@"hello", @"world", @"end", nil]; } // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } Content is shown and if I'm selecting item i'm getting: [Session started at 2010-03-16 19:21:48 +0200.] 2010-03-16 19:21:52.295 ViewTest[1775:207] * -[ViewTestViewController respondsToSelector:]: message sent to deallocated instance 0x3911ec0 I'm total new to iPhone programming. And as i see everything i do - i'm just getting application terminated ..

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  • AppDelegate viewController memory leak?

    - by fuzzygoat
    I am just curious with regards to the correct way to create a view controller programatically. When I compile this code with the static analyser I get a leak (as you would expect) from the alloc. Should I just leave it as it needs to stay until the app exits anyways, or is there a cleaner way? - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { NSLog(@"UIApplication application:"); RectViewController *myController = [[RectViewController alloc] init]; [window addSubview:[myController view]]; [window makeKeyAndVisible]; return YES; } cheers Gary

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  • Prevent subview from scrolling in a UIScrollView

    - by jbrennan
    I have a UIScrollView subclass with a certain subview I'd like to prevent from scrolling (while all the other subviews scroll as normal). The closest example to this I can think of is UITableView's "index strip" on the right side (look in the Contacts app to see an example). I am guessing this is a subview of the table (scrollview) but it does not move as the user scrolls. I can't seem to make my subview stay put! How can I accomplish this?

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  • UIView subclass draws background despite completely empty drawRect: - why?

    - by Pascal
    So, I have a custom UIView subclass which enables drawing of rounded edges. The thing draws perfectly, however the background always fills the whole bounds, despite clipping to a path first. The border also draws above the rectangular background, despite the fact that I draw the border in drawRect: before the background. So I removed the whole content of drawRect:, which is now virtually empty - nevertheless the background gets drawn! Anybody an explanation for this? I set the backgroundColor in Interface Builder. Thanks!

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  • Do [sprite stopActionByTag: kTag]; working differently for different CCActions ?

    - by srikanth rongali
    //prog 1 -(void)gameLogic:(ccTime)dt { id actionMove = [CCMoveTo actionWithDuration:1.0 position:ccp(windowSize.width/2-400, actualY)]; [actionMove setTag:6]; [self schedule:@selector(update:)]; [hitBullet runAction:actionMove]; } -(void)update:(ccTime)dt { if ( (CGRectIntersectsRect(hitRect, playerRect)) ) { [[[self getActionByTag:6] retain] autorelease]; [hitBullet stopActionByTag: 6]; } } //prog 2 -(void)gameLogic:(ccTime)dt { id actionMove = [CCMoveTo actionWithDuration:1.0 position:ccp(windowSize.width/2-400, actualY)]; id hitBulletAction = [CCSequence actionWithDuration:(intervalforEnemyshoot)]; id hitBulletSeq = [CCSequence actions: hitBulletAction, actionMove, nil]; [hitBulletSeq setTag:5]; [self schedule:@selector(update:)]; [hitBullet runAction:hitBulletSeq]; } -(void)update:(ccTime)dt { if ( (CGRectIntersectsRect(hitRect, playerRect)) ) { [[[self getActionByTag:5] retain] autorelease]; [hitBullet stopActionByTag: 5]; } } While prog1 is working prog2 is not working ? I think the both are same. But why the two stopActions are working differently in two prog1 and prog2 ? I mean the actions are stopped in prog1 but the actions are not stopping in prog2 ? thank You.

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  • Adding a button inside an image.

    - by iSharreth
    CGRect frame = CGRectMake(round((self.view.bounds.size.width - kImageWidth) / 2.0), kTopPlacement, kImageWidth, kImageHeight); self.containerView = [[[UIView alloc] initWithFrame:frame] autorelease]; [self.view addSubview:self.containerView]; // create the initial image view frame = CGRectMake(0.0, 0.0, kImageWidth, kImageHeight); self.mainView = [[[UIImageView alloc] initWithFrame:frame] autorelease]; self.mainView.image = [UIImage imageNamed:imagePath]; I want to put a button inside mainview.image. How can I do it? Any help will be greatly appreciated.

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  • Easiest Way to Parse data from twitter with Coccoa

    - by happyCoding25
    Hello, Im followed the tutorial from here: Twitter Client Tutorial to make a little twitter app. Now I need to find out how to parse the XML twitter gives you when you make a request. I've looked at tons of tutorials on phrasing xml on the iPhone but none have made much sense because Im still new to cocoa. Twitter stores the text of the tweet in something like this <text> Some tweet here </text>. From reading the tutorials I think this would involve nsxmlparser but I'm not sure. If anyone could share some code that could parse the <text> Some tweet here </text> things into an array that would be really great. Thanks in advance

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  • Assigning to struct in different class

    - by 4thSpace
    I have a struct in ClassA and want to assign it to the same struct in ClassB (the two structs are the same with different names). ClassA and ClassB are view controllers. Basically, I need to pass this struct to another class. However, structs don't seem to be exposed as members, which means I can't access them. Here is ClassA's struct declared in its header file: typedef struct { NSString *startDate; NSString *endDate; NSString *classId; } selectedItemsClassAStruct; selectedItemsClassAStruct selectedItemsClassA; and the same for ClassB (just with ClassA text replaced) It doesn't appear in code hints for ClassB. I see this error if I try to access it: request for member 'selectedItemsClassBStruct' in something not a structure or union How should it be done?

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  • Items mixed up after scrolling in UITableView

    - by jean
    When I scroll in my UITableView, the cells become mixed up. What am I doing wrong? This is my method: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } [cell insertSubview:[itemArray objectAtIndex:indexPath.row] atIndex:indexPath.row]; return cell; } Update It now works by using cell.contentView, but now when I select an item, the selected one is overlayed with the content of a different cell...

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  • Why would delaying a thread response fix view corruption?

    - by Beth S
    6 times out of 10 my very simple iPhone app is getting a corrupted display on launch or crashes randomly. But it behaves fine in the simulator. The display corruption looks like mis-colored fonts, out of place font text, wrong background colors, etc. I've found a strange work-around.. when my thread delays by 2 seconds before calling the "done" notification, everything works swimmingly. The thread reads a web page and the "done" notification loads up a PickerView with strings. So what gives? Can I not safely initiate a threaded task from viewDidLoad? - (void) loadWebPage:(NSString *)urlAddition { NSAutoreleasePool *subPool = [[NSAutoreleasePool alloc] init]; NSString *pageSource; NSError *err; NSString *urlString = [NSString stringWithString:@"http://server/%@", urlAddition]; pageSource = [NSString stringWithContentsOfURL:[NSURL URLWithString: urlString] encoding:NSUTF8StringEncoding error:&err]; [NSThread sleepForTimeInterval:2.0]; // THIS STOPS THE DISPLAY CORRUPTION [[NSNotificationCenter defaultCenter] postNotificationName:@"webDoneNotification" object:nil]; [subPool drain]; } - (void) webDoneNotification: (NSNotification *)pNotification { [mediaArray release]; mediaArray = [[NSArray arrayWithObjects: [NSString stringWithString:@"new pickerview text"], nil] retain]; [mediaPickerView reloadAllComponents]; [mediaPickerView selectRow:0 inComponent:0 animated:NO]; } - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { mediaArray = [[NSArray arrayWithObjects: [NSString stringWithString:@"init pickerview text"], nil] retain]; if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Custom initialization } return self; } - (void)viewDidLoad { [super viewDidLoad]; myWebThread = [[WebThread alloc] initWithDelegate:self]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(webDoneNotification:) name:@"webDoneNotification" object:nil]; [myWebThread performSelectorInBackground:@selector(loadWebPage:) withObject:@""]; } Thanks! Update: Even a delay of 0.1 seconds is enough to completely fix the problem.

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  • Is garbage collection supported for iPhone applications?

    - by Mustafa
    Does the iPhone support garbage collection? If it does, then what are the alternate ways to perform the operations that are performaed using +alloc and -init combination: NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:xmlData]; UIImage *originalImage = [[UIImage alloc] initWithData:data]; detailViewController = [[[DetailViewController alloc] initWithNibName:@"DetailView bundle:[NSBundle mainBundle]] autorelease]; ... and other commands. Thank you in advance for any help or direction that you can provide.

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  • NSString not applying to UILabel

    - by lyonjtill
    - (void)restoreUserDefaults { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; if([defaults objectForKey:@"Exam Name"] == nil) { examName = [[NSString alloc] initWithString:@"Name"]; } else { examName = [[NSString alloc] initWithString:[defaults objectForKey:@"Exam Name"]]; } [examNameLabel setText:examName]; NSLog(@"New Exam Schedule - Exam Name - %@",[defaults objectForKey:@"Exam Name"]); NSLog(@"examName = %@", examName); NSLog(@"examNameLabel = %@", examNameLabel); } Dear all, Basically above is a basic method to change a UILabel to a saved piece of data. I am having a problem making the label change to the NSString examName. I have checked Interface Builder and it's connected up. Any ideas why? Regards Lyon J Till

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  • Create a UIView Subclass that calls a delegate function whenever it's parent viewController appears?

    - by Andrew Johnson
    UIViewControllers have viewWillAppear, viewDidDisappear, etc. delegate methods. I would like to create a UIView subclass that can be added to a viewController's view, and when that UIViewController apears or disappears, a delegate function is called. I could easily do this by putting function calls in the UIViewController viewWillAppear/viewWillDisappear delegate functions, but how can I encapsulate this behavior in the UIView?

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  • how to play video files by using UITableView?

    - by srikanth rongali
    Hi, In my iPhone application I need to show a video image in UITableView. Each tableViewCell have video and some labels. I used the MPMoviePlayerController for showing video in full screen when the cell is selected. But, I am getting error that MPMoviePlayerController class is not there. I tried using UIWebView. But, I could not make it. How can I play a video, when the cell is selected. Some say that videos do not play in simulator. They only play when we test in device. Is it right ? Please help me with the solution. Thank You.

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  • Problem with reusing UITableViewCell's

    - by Sheehan Alam
    I have a UITableView that is re-using cells when the user scrolls. Everything appears and scrolls fine, except when the user clicks on an actual row, the highlighted cell displays some text from another cell. I'm not exactly sure why. #define IMAGE_TAG 1111 #define LOGIN_TAG 2222 #define FULL_NAME_TAG 3333 // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; STUser *mySTUser = [[[STUser alloc]init]autorelease]; mySTUser = [items objectAtIndex:indexPath.row]; AsyncImageView* asyncImage = nil; UILabel* loginLabel = nil; UILabel* fullNameLabel = nil; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease]; } else { asyncImage = (AsyncImageView *) [cell.contentView viewWithTag:IMAGE_TAG]; loginLabel = (UILabel *) [cell.contentView viewWithTag:LOGIN_TAG]; fullNameLabel = (UILabel *) [cell.contentView viewWithTag:FULL_NAME_TAG]; } // Configure the cell... cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; CGRect frame = CGRectMake(0, 0, 44, 44); asyncImage = [[[AsyncImageView alloc]initWithFrame:frame] autorelease]; asyncImage.tag = IMAGE_TAG; NSURL* url = [NSURL URLWithString:mySTUser.avatar_url_large]; [asyncImage loadImageFromURL:url]; [cell.contentView addSubview:asyncImage]; loginLabel.tag = LOGIN_TAG; CGRect loginLabelFrame = CGRectMake(60, 0, 200, 10); loginLabel = [[[UILabel alloc] initWithFrame:loginLabelFrame] autorelease]; loginLabel.text = [NSString stringWithFormat:@"%@",mySTUser.login]; [cell.contentView addSubview:loginLabel]; fullNameLabel.tag = FULL_NAME_TAG; CGRect fullNameLabelFrame = CGRectMake(60, 20, 200, 10); fullNameLabel = [[[UILabel alloc] initWithFrame:fullNameLabelFrame] autorelease]; fullNameLabel.text = [NSString stringWithFormat:@"%@ %@",mySTUser.first_name, mySTUser.last_name]; //[NSString stringWithFormat:@"%@",mySTUser.login]; [cell.contentView addSubview:fullNameLabel]; return cell; }

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  • Memory problem with basic UITableView when scrolling

    - by Sheehan Alam
    I have a very simple UITableView that has 3 sections, and 3 rows per section. #pragma mark - #pragma mark UITableView delegate methods - (NSInteger)tableView:(UITableView *)tblView numberOfRowsInSection:(NSInteger)section { return 3; } - (UITableViewCell *)tableView:(UITableView *)tblView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tblView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } // Configure the cell... return cell; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tblView { if (tblView == self.tableView) { return 3; } else { return 1; } } Everything shows up fine, but as soon as I scroll my application crashes and my debugger tells me: * -[ProfileViewController tableView:cellForRowAtIndexPath:]: message sent to deallocated instance 0x5ae61b0 I'm not exactly sure what I am doing wrong.

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