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  • [UIScreen applicationFrame] returning incorrect rectangle on landscape application launch (iPhone/iP

    - by jbrennan
    Having trouble getting the correct bounds for my iPad application when launching it in landscape mode. I have the proper keys set in my Info.plist file, and my view controllers launch properly in landscape (and portrait, natch). In my applicationDidFinishLaunching: method I'm calling a selector after a 3 second delay, and that method makes a call to [[UIScreen applicationFrame]`, but it's returning me a portrait frame (ie height width). Does anyone know how to fix this? It smells like a bug to me (if so I'll file a radar), but if it's intended behaviour, where is it documented?

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  • Setting a UITableViewCell accessory type on some cells, but not all

    - by Sheehan Alam
    I have 8 cells that are being built in my UITableViewController. I would like to know how I can show a disclosure indicator on the 4th and 8th cells. Right now I am building it in - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath though I am fully aware it is going to add a disclosure indicator to every cell cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

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  • How to check if variable is a CFString?

    - by Sheehan Alam
    I am trying to set some text on a label descriptionLabel.text = [NSString stringWithFormat:mySTUser.bio]; The bio property of mySTUser is an NSString. Sometimes it is not an NSString when I set it. How can I check if mySTUser.bio is an NSString so I can prevent it from being assigned to my label text?

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  • No scrolling occurs when UITableView scrollToRowAtIndexPath is invoked

    - by theactiveactor
    My view contains a simple TableView with 6 rows and a button that invokes doScroll when clicked. My objective for doScroll() is simply scroll to the 5th cell such that it's at top of the table view. - (void)doScroll: (id)sender { NSIndexPath *index = [NSIndexPath indexPathForRow:4 inSection: 1]; [m_tableView scrollToRowAtIndexPath:index atScrollPosition:UITableViewScrollPositionTop animated:YES]; } However when doScroll is invoked, the tableview scrolls only slightly. I suspect this has something to do with the size of the scroll view. So I tried increasing the height of m_tableview.contentsize before scrolling. After I do this however, no scrolling occurs at all... The view controller is a simple UIViewController and refers to the table view via IBOutlet. For some reason, scrolling works as expected for the default Navigation Based Application, where the controller is a UITableViewController

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  • how to display HTML in a UITextView

    - by Mark
    essetially I just want formatted HTML rendered in the UITextView, should I be using the undocumented setContentToHTMLString? I feel that I should not be using that, I have tried it, but the text (after being rendered as HTML) does not scroll properly, which is why I suspect its not documented... Should I just use a UIWebView? Can I just pass it arbitrary HTML and expect it to render it?

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  • How to dismiss keyboard on a UIWebView?

    - by Sheehan Alam
    I am loading an HTML page that has a form. I would like to be able to dismiss the keyboard when the user clicks on GO or if he clicks on the SUBMIT button on the HTML page. If the user decides he doesn't want to fill out the form, I also need a way to dismiss the keyboard. Not sure how to do this.

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  • UIPageControl in a ITableViewCell gets shoved to the top left corner

    - by Danny Tuppeny
    I'm trying to put a UIPageControl inside a cell (there's nothing else in the cell), but I have two problems: The dots are aligned at the top-left of the cell, so you only see the bottom-right quarter of the first dot, and the bottom half of the other dots (like the first dots center is 0, 0). Unless you tab the cell to select it (goes blue), you can't see the dots at all. Other controls I've put into a cell have filled the whole area as wanted. How do I tell the UIPageControl to fill the whole cell (and align in the middle) How do I change the colours so the dots can be seen? I tried calling [pageControl setBackgroundColor] but it didn't seem to do anything. Here's the code I'm using: // Create a page control UIPageControl *pageControl = [[[UIPageControl alloc] init] autorelease]; // Set the number of pages to match the images [pageControl setNumberOfPages:[imageFilenames count]]; [pageControl setCurrentPage:1]; // Create the cell and add the paging control UITableViewCell *cell = [self getCell:tableView withIdentifier:@"ImagePager"]; [cell addSubview:pageControl]; //[[cell textLabel] setText:@"ADD PAGING CONTROL"]; return cell;

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  • UITableViewCellSeparatorStyleNone does not hide blue separator line when selecting in UITableView

    - by clozach
    Before describing the problem, let me first point out that this is a distinct issue from this question. The Problem This screenshot was taken with a break set at tableView:didSelectRowAtIndexPath:, and as you can see in the simulator (far right of the image), there's a single-pixel blue line at the bottom of the selected cell. This is not the design asked for by the client, nor is it how this app used to behave: there should be no separator, even on selection. How I Got Here I'd initially designed this table view using custom UITableViewCell classes with corresponding nib (.xib) files and had no trouble with selections: the separator was hidden as desired. Predictably, scrolling was sluggish due to all the overhead from the view hierarchy, so I reworked the custom cells to use Loren Brichter's fast scrolling solution. Now scrolling is much faster, but I can't get rid of the separator for the life of me. What I've tried At the time of the screenshot above... the table view has "Separator [None]" in IB. the UIViewController that contains the table view has this line in viewDid Load: self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone; As you can see in the screenshot, I inserted some unused lines to prove that separatorStyle is set as desired. Other testing confirms that tableView and self.tableView are equivalent pointers at that same breakpoint. I've also tried setting tableView.separatorColor to black and to clear, all with the same result: the cells look right until a selection is made.

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  • willRotateToInterfaceOrientation:duration: not called for iOS5 after dismissing from modal

    - by Jean-Denis Muys
    My main UIViewController overrides willRotateToInterfaceOrientation:duration: to adapt the background view for the correct orientation. This works fine when staying within the view. But in my app, the result of some user actions can lead to presenting another "daughter" UIViewController. When the user is done with that daughter UIViewController, she normally returns to the main view controller. My code calls dismissModalViewControllerAnimated: to do so. The issue occurs when the user changes the iPad orientation while the daughter UIViewController is on screen. Then, the main UIViewController will never see any call to willRotateToInterfaceOrientation:duration: and its background view will be incorrect. This setup works fine in iOS 4: the iOS 4 implementation of dismissModalViewControllerAnimated: calls UIWindow's _setRotatableClient:toOrientation:updateStatusBar:duration:force: which calls willRotateToInterfaceOrientation:duration: for the switched in UIViewController. Apparently , this behavior changed for iOS 5. How am I expected to implemented orientation changes while my view is off screen under iOS5? Am I supposed to query the current orientation in viewWillAppear: for example?

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  • Decimal point issue on cocoa app

    - by Manuel Rocha
    I there, I'm trying making my first cocoa app, but I'm having problems with float numbers because of the regional settings. If I write on the TextBox the float number 1.2 I only can get the number 1, but If I write on the same TextBox the same float number but this time with the ',' sign instead (1,2) I can get the right float value. How can I bypass the regional settings? Kind Regards, Manuel Rocha

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  • Core Text's CTFramesetterSuggestFrameSizeWithConstraints() returns incorrect size everytime

    - by nsapplication
    According to the docs, CTFramesetterSuggestFrameSizeWithConstraints () "determines the frame size needed for a string range". Unfortunately the size returned by this function is never accurate. Here is what I am doing: NSAttributedString *string = [[[NSAttributedString alloc] initWithString:@"lorem ipsum" attributes:nil] autorelease]; CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((CFAttributedStringRef) string); CGSize textSize = CTFramesetterSuggestFrameSizeWithConstraints(framesetter, CFRangeMake(0,0), NULL, CGSizeMake(rect.size.width, CGFLOAT_MAX), NULL); The returned size always has the correct width calculated, however the height is always slightly shorter than what is expected. Is this the correct way to use this method? Is there any other way to layout Core Text? Seems I am not the only one to run into problems with this method. See https://devforums.apple.com/message/181450.

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  • How to convert an NSArray of NSManagedObjects to NSData

    - by carok
    Hi, I'm new to Objective C and was wondering if anyone can help me. I am using core data with a sqlite database to hold simple profile objects which have a name and a score attribute (both of which are of type NSString). What I want to do is fetch the profiles and store them in an NSData object, please see my code below: NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"GamerProfile" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"Name" ascending:YES]; NSArray *sortDecriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDecriptors]; [sortDescriptor release]; [sortDecriptors release]; NSError *error; NSArray *items = [self.managedObjectContext executeFetchRequest:fetchRequest error:&error]; NSData *data = [NSKeyedArchiver archivedDataWithRootObject:items]; [self SendData:data]; [fetchRequest release]; When I run the code I'm getting the error "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[GamerProfile encodeWithCoder:]: unrecognized selector sent to instance 0x3f4b530'" I presume I have to add an encodeWithCoderClass to my core data NSManagedObject object (GamerProfile) but I'm not sure how to do this even after reading the documentation, My attempt at doing this is below. I'm not sure if I'm going along the right lines with this as get a warning stating "NSManagedObject" may not respond to '-encodeWithCoder'" I would really, really appreciate it if someone could point me in the right direction!! Thanks C Here is the code for my GamerProfile (CoreData NSManagedObject Object) with my attempt at adding an encodeWithCoder method... Header File #import <CoreData/CoreData.h> @interface GamerProfile : NSManagedObject <NSCoding> { } @property (nonatomic, retain) NSString * GamerScore; @property (nonatomic, retain) NSString * Name; - (void)encodeWithCoder:(NSCoder *)coder; @end Code File #import "GamerProfile.h" @implementation GamerProfile @dynamic GamerScore; @dynamic Name; - (void)encodeWithCoder:(NSCoder *)coder { [super encodeWithCoder:coder]; [coder encodeObject:GamerScore forKey:@"GamerScore"]; [coder encodeObject:Name forKey:@"Name"]; }

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  • UIScrollView setZoomScale not working ?

    - by iFloh
    Hi, I am struggeling with my UIScrollview to get it to zoom-in the underlying UIImageView. In my view controller I set - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView { return myImageView; } In the viewDidLoad method I try to set the zoomScale to 2 as follows (note the UIImageView and Image is set in Interface Builder): - (void)viewDidLoad { [super viewDidLoad]; myScrollView.contentSize = CGSizeMake(myImageView.frame.size.width, myImageView.frame.size.height); myScrollView.contentOffset = CGPointMake(941.0, 990.0); myScrollView.minimumZoomScale = 0.1; myScrollView.maximumZoomScale = 10.0; myScrollView.zoomScale = 0.7; myScrollView.clipsToBounds = YES; myScrollView.delegate = self; NSLog(@"zoomScale: %.1f, minZoolScale: %.3f", myScrollView.zoomScale, myScrollView.minimumZoomScale); } I tried a few variations of this, but the NSLog always shows a zoomScale of 1.0. Any ideas where I screw this one up?

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  • Creating a "chat bubble" on the iPhone, like Tweetie.

    - by Coocoo4Cocoa
    Just curious, did I overlook somewhere in the API to display a chat bubble type image as found in the iPhone's SMS application? There's a few applications out there that use bubbles that look verbatim to the iPhone's and I'm wondering if they're using a native widget or their own image. This is also seen in the Tweetie application where the content of the tweets are.

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  • UILabel: vertical alignment

    - by Stefan
    Hi, I have an UILabel with two lines. Sometimes it's text is short. Then the text gets displayed in the center (vertically) of the UILabel. How do I align my text at the top (vertically)? Regards...

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  • Count string value?

    - by Adam
    Hey, Im a newbie in cocoa and I have a string and I am trying to count how long it is. I have been searching through Apples docs but I can't find anything. NSString *word = @"word"; How would I figure out how many characters is in a string? Thanks

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  • Select row After UIPickerView is loaded

    - by Steve Gibson
    I have an iphone database app that loads a UIPickerView with data from a table. I want to set the selected row to a particular row from the data in another table. for example: Lets say I have a UIPickerView that is loaded with X number of names of the iPhone users friends (the number of names is variable, could be 1 or 1000 and all are entered into the DB by the user). The iPhone user has a preference set that their current best friend is TED. I want the UIPickerView to be position to TED when displayed. Where do I call selectRow? I tried in viewDidAppear but it was never called, in titleForRow which caused all kinds of strange behavior. viewDidLoad and viewWillAppear are out of the question because I don't know what's in the datasource to the picker yet. Thanks in advance.

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  • Tab bar controller inside a navigation controller, or sharing a navigation root view

    - by Daniel Dickison
    I'm trying to implement a UI structured like in the Tweetie app, which behaves as so: the top-level view controller seems to be a navigation controller, whose root view is an "Accounts" table view. If you click on any account, it goes to the second level, which has a tab bar across the bottom. Each tab item shows a different list and lets you drill down further (the subsequent levels don't show the tab bar). So, this seems like the implementation hierarchy is: UINavigationController Accounts: UITableViewController UITabBarController Tweets: UITableViewController Detail view of a tweet/user/etc Replies: UITableViewController ... This seems to work[^1], but appears to be unsupported according to the SDK documentation for -pushViewController:animated: (emphasis added): viewController: The view controller that is pushed onto the stack. It cannot be an instance of tab bar controller. I would like to avoid private APIs and the like, but I'm not sure why this usage is explicitly prohibited even when it seems to work fine. Anyone know the reason? I've thought about putting the tab bar controller as the main controller, with each of the tabs containing separate navigation controllers. The problem with this is that each nav controller needs to share a single root view controller (namely the "Accounts" table in Tweetie) -- this doesn't seem to work: pushing the table controller to a second nav controller seems to remove it from the first. Not to mention all the book-keeping when selecting a different account would probably be a pain. How should I implement this the Right Way? [^1]: The tab bar controller needs to be subclassed so that the tab bar controller's navigation item at that level stays in sync with the selected tab's navigation item, and the individual tab's table controller's need to push their respective detail views to self.tabBarController.navigationController instead of self.navigationController.

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  • Delay in playing sounds using AVAudioPlayer

    - by iSharreth
    -(IBAction)playSound{ AVAudioPlayer *myExampleSound; NSString *myExamplePath = [[NSBundle mainBundle] pathForResource:@"myaudiofile" ofType:@"caf"]; myExampleSound =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:myExamplePath] error:NULL]; myExampleSound.delegate = self; [myExampleSound play]; } I want to play a beep sound when a button is clicked. I had used the above code. But it is taking some delay in playing the sound. Anyone please help.

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  • How to get fast, smooth scrolling with UIWebView?

    - by sam
    UIWebView exhibits jerky behavior when scrolling fast through lots of content. Mobile Safari, on the other hand, scrolls quickly and smoothly. It displays a simple checkerboard pattern while scrolling and then renders the page when scrolling is done. How can we get Mobile Safari's fast, smooth scrolling behavior with a UIWebView?

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  • Why does navigationItem.titleView align left when presentmodalviewcontroller called?

    - by jm333
    I'm using a UILabel for the titleView of a navigation bar (I'm making simple in-app web browser). It works fine, except that when I present a modal view controller, the titleView shifts from the center of the navbar to the far left (underneath the back button). I've tested in 3.0 and up. Here is relevant code: - (void)viewDidLoad { [super viewDidLoad]; // Title view label CGRect labelFrame = CGRectMake(0.0, 0.0, 120.0, 36.0); UILabel *label = [[[UILabel alloc] initWithFrame:labelFrame] autorelease]; label.font = [UIFont boldSystemFontOfSize:14]; label.numberOfLines = 2; label.backgroundColor = [UIColor clearColor]; label.textAlignment = UITextAlignmentCenter; label.textColor = [UIColor whiteColor]; label.shadowColor = [UIColor blackColor]; label.shadowOffset = CGSizeMake(0.0, -1.0); label.lineBreakMode = UILineBreakModeMiddleTruncation; self.navigationItem.titleView = label; } -(void)displayComposerSheet:(NSString*)mailto { MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; [self presentModalViewController:picker animated:YES]; [picker release]; } Screenshots: http://img689.imageshack.us/img689/7968/titleviewshift.jpg Any idea why this is happening? Thanks.

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  • iPhone SDK 3.0 and symbolicatecrash not getting along?

    - by Steve
    * UPDATE * I've reinstalled with Snow Leopard, clean install. Completely wiped my existing Leopard install. Same problem persists. I've tried numbers of versions of symbolicatecrash to resolve symbols in my crash reports. From the version provided by Apple, to Alan's Quatermain's version posted on GitHub and finally from http://openradar.appspot.com/6438643. For whatever reason, the best results I can get is for symbols on my own libraries to get resolved. Normally, this is enough data to point me in the right direction -- other times it is not. With 2.x I had no problems getting the symbols for my code + Apple provided libraries from within the stack traces in each thread. Most likely an issue with my environment here, I'm not at all doubting the work that Apple or Alan have done. Yes I'm certain the dSYM I have stashed away is the same exact one that's generating the crash report. Although 'Foo' is me, and getting symbols from it is wonderful, I need to see symbols from the other functions in the stack to truly understand my reports. Note: For devices that crash running the app on iPhone OS 2.2.1, I have no problem getting all symbols. This is an iPhone OS 3.0 issue it appears. Also, while running symbolicatecrash in verbose mode here's a few of the things that struck me as wrong: - NO MATCH NOT searching in Spotlight for dsym with UUID of /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation ## Warning: Can't find any unstripped binary that matches version of /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation ..........fetching symbol file for libobjc.A.dylib--[undef] Searching [/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0 (5A345)/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0 (5A347)/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0.1 (5B108)/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0.2 (5C1)/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.1.1/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.1/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.2.1/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.2/Symbols/usr/lib/libobjc.A.dylib /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0 (7A341)/Symbols/usr/lib/libobjc.A.dylib]...--[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0 (5A345)/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0 (5A347)/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0.1 (5B108)/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.0.2 (5C1)/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.1.1/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.1/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.2.1/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/2.2/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH --[/Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0 (7A341)/Symbols/usr/lib/libobjc.A.dylib] -- NO MATCH NOT searching in Spotlight for dsym with UUID of /usr/lib/libobjc.A.dylib ## Warning: Can't find any unstripped binary that matches version of /usr/lib/libobjc.A.dylib Here's an example of the crash report after running it through symbolicatecrash: Thread 0 Crashed: 0 libSystem.B.dylib 0x31dc476c 0x31d46000 + 517996 1 libSystem.B.dylib 0x31dc4755 0x31d46000 + 517973 2 Foo 0x00053075 uncaught_exception_handler + 21 3 CoreFoundation 0x3028f65f 0x301fd000 + 599647 4 libobjc.A.dylib 0x30013693 0x3000c000 + 30355 5 libstdc++.6.dylib 0x374ccc2d 0x3748a000 + 273453 6 libstdc++.6.dylib 0x374ccc81 0x3748a000 + 273537 7 libstdc++.6.dylib 0x374ccd4d 0x3748a000 + 273741 8 libobjc.A.dylib 0x300135ff 0x3000c000 + 30207 9 CoreFoundation 0x30222f2d 0x301fd000 + 155437 10 CoreFoundation 0x30222ecb 0x301fd000 + 155339 11 Foundation 0x30521e33 0x30501000 + 134707 12 Foundation 0x30570d47 0x30501000 + 458055 13 Foo 0x0000a1db -[Bar barfoo] (Bar.m:1617) 14 Foo 0x00032f73 -[MyViewController foobar] (MyViewController.m:727) 15 Foo 0x000329b9 -[MyViewController foobar] (MyViewController.m:666) 16 Foo 0x00031fab -[MyViewController tabBar:tabSelected:] (MyViewController.m:440) 17 Foo 0x00068d41 -[TTTabBar setSelectedTabIndex:] (TTTabBar.m:160) 18 Foo 0x00068ca3 -[TTTabBar setSelectedTabView:] (TTTabBar.m:142) 19 Foo 0x000689cf -[TTTabBar tabTouchedUp:] (TTTabBar.m:83) 20 CoreFoundation 0x302552f9 0x301fd000 + 361209 21 UIKit 0x3094d101 0x308ed000 + 393473 22 UIKit 0x3094d0a1 0x308ed000 + 393377 23 UIKit 0x3094d073 0x308ed000 + 393331 24 UIKit 0x3094cdcd 0x308ed000 + 392653 25 UIKit 0x309779c1 0x308ed000 + 567745 26 UIKit 0x30977011 0x308ed000 + 565265 27 UIKit 0x309767d9 0x308ed000 + 563161 28 UIKit 0x30923613 0x308ed000 + 222739 29 UIKit 0x30923163 0x308ed000 + 221539 30 GraphicsServices 0x32045a4d 0x32041000 + 19021 31 CoreFoundation 0x30253041 0x301fd000 + 352321 32 CoreFoundation 0x30252771 0x301fd000 + 350065 33 GraphicsServices 0x32044b0f 0x32041000 + 15119 34 GraphicsServices 0x32044bbb 0x32041000 + 15291 35 UIKit 0x308f0363 0x308ed000 + 13155 36 UIKit 0x308ef121 0x308ed000 + 8481 37 Foo 0x00002097 main (main.m:13)

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