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  • Need help with creating complex UITableView items (like the Settings app).

    - by Craig
    I hoping to create a custom Settings view, similar to the Settings application, but with more control over the UI and access to some settings (i need to lock some of the settings). Obvously, there are a variety of UI elements mixed in each row of application's UITableView. For example, the 'Airplane Mode' setting shows a UISwitch, while the 'Wi-Fi' setting has a text value adjacent to the disclosure symbol (''). Further complicating matters, is the grouping of these settings. I have some general questions about the approach I should take: Seems like i need to save the name of the setting, its current value, its grouping, and the type of UI element(s) needed to modify its value. i would like to make use [NSUserDefault standardUserDefaults], but not have these settings appear in the Settings application. I'm guessing that I will need to create my own settings-persistence class. is it better to build each one of these complex UI-element combinations in code or to create a series of custom views based on the UITableViewCell and load the appropriate one? i'm guessing the latter. some of the setting require that i load another view to select its value. assuming that the application is based on the Utility pattern, should the SettingsView manage the navigation stack, rather than having the app delegate do so? Thanks for your time and comments. Craig Buchanan

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  • NSXMLParser error code 65

    - by Zhongcai
    Hi guys, NSXMLParser is giving me the following error: "Error 65, Description: (null), Line: 1, Column: 47" I've checked the documentation, and it says that a space is required at column47??. Was hoping someone can help out on this? The raw xml file is as follows. Strangely, the parser works intermittently at times, and for the same xml file. <?xml version="1.0"?> <contacts> <known> <pid>116</pid> <abid>188</abid> <latitude>1.417320695</latitude> <longitude>103.7597807</longitude> <status>Available</status> </known> </contacts>

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  • UIButton: Need a circle hit area

    - by Pavan
    Ok I have 6 custom UIButtons. Their normal state image are all circles images. They are all spaced out equally but all the circles touch each other. The problem with the custom UIbutton (which has a circle image on it), is that the hit area of that button is square, and the corners of this square overlaps the hitarea of the other custom button's hitarea. How do i make the hit area of a UIbutton whos normal state has a circle image, be only clickable on that circle only, rather than the normal square hit area?! I hope that someone can find a way for me to solve this problem that i currently am having! Thanks in advance Pavan

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  • Cocos2D SpriteSheet animation problem, my number of frames is much larger.

    - by vaibhav-tekam
    Hello, I am trying to use SpriteSheet to run an animation. My frames are of 320x480 in size each, So I am able to put max 6 frames on the texture image. But my animation consists of frame number ranging from 50 to 200 sometimes, and all are of size 320x480. But this much number of frames cannot be added on the Texture image as the size is restricted to 1024x1024. Is there any other approach I can try out. Can I play one animation after the other.And won't it be hampering the performance. Please, I need suggestions. Best, Vaibhav Tekam.

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  • Incorrect value for sum of two NSIntegers

    - by Antonio
    Hi everybody: I'm sure I'm missing something and the answer is very simple, but I can't seem to understand why this is happening. I'm trying to make an average of dates: NSInteger runningSum =0; NSInteger count=0; for (EventoData *event in self.events) { NSDate *dateFromString = [[NSDate alloc] init]; if (event.date != nil) { dateFromString = [dateFormatter dateFromString:event.date]; runningSum += (NSInteger)[dateFromString timeIntervalSince1970]; count += 1; } } if (count>0) { NSLog(@"average is: %@",[NSDate dateWithTimeIntervalSince1970:(NSInteger)((CGFloat)runningAverage/count)]); } Everything seems to work OK, except for runningSum += (NSInteger)[dateFromString timeIntervalSince1970], which gives an incorrect result. If I put a breakpoint when taking the average of two equal dates (2009-10-10, for example, which is a timeInterval of 1255125600), runningSum is -1784716096, instead of the expected 2510251200. I've tried using NSNumber and I get the same result. Can anybody point me in the right direction? Thanks! Antonio

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  • Add UIBarButtonItem in interface builder, how to?

    - by Martin
    I have a navigation based application that have a uinavigataioncontroller containing uitableviewcontrollers. I want to add buttons to the UINavigationbar of the uinavigataioncontroller, usually I write code to add these buttons, something like this: UIBarButtonItem *saveButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(saveClicked:)]; self.navigationItem.rightBarButtonItem = saveButton; [saveButton release]; My idea now was to use interface builder instead. But I'm not sure how to do it. What I'm trying to do is to add a UINavigationItem in the xib file of the viewcontroller (my viewcontroller is called TextViewController), something like this: See this image: http://i48.tinypic.com/qq5yk7.jpg But how can I make TextViewController use the UINavigationItem I added? The button I add doesn't show in the navigationbar. Any ideas on how to do this? What am I missing?

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  • Adding UIView animation mysteriously changes starting frame

    - by clozach
    I'm working on an app that shows a thumbnail of a photo taken by the user. In order to show a seemless transition from the full-screen image shown in the UIImagePickerController to the thumbnail, I set the frame on my copy of the image to [[UIScreen mainScreen] bounds] and then change the frame to match the frame of an invisible button. (The button allows users to re-take their photo by tapping the thumbnail image.) The trouble is that the starting x-origin of my UIImageView (imageView) is mysteriously starting nearly offscreen to the left: As you can see from the alert, the imageView purports to be located at (0,0), yet it's displaying at something like (-255,0). Here's the code: CGRect frame = [[UIScreen mainScreen] bounds]; imageView.frame = frame; [[[[UIAlertView alloc] initWithTitle:@"Yo!" message:[NSString stringWithFormat:@"starting frame:%@",NSStringFromCGRect(imageView.frame)] delegate:nil cancelButtonTitle:@"K." otherButtonTitles:nil] autorelease] show]; // Slide the enlarged image seamlessly "onto" the photo button [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1000]; [UIView setAnimationDelay:.5]; imageView.frame = pictureButton.frame; [UIView commitAnimations]; As if to taunt me, the image actually does go full screen if I comment out the animation code: CGRect frame = [[UIScreen mainScreen] bounds]; imageView.frame = frame; [[[[UIAlertView alloc] initWithTitle:@"Yo!" message:[NSString stringWithFormat:@"starting frame:%@",NSStringFromCGRect(imageView.frame)] delegate:nil cancelButtonTitle:@"K." otherButtonTitles:nil] autorelease] show]; // Slide the enlarged image seamlessly "onto" the photo button // [UIView beginAnimations:nil context:nil]; // [UIView setAnimationDuration:1000]; // [UIView setAnimationDelay:.5]; // // imageView.frame = pictureButton.frame; // // [UIView commitAnimations]; (Note: animationDuration will of course be set to something more like .5 in production, not 1000 seconds.) Update — Other weirdness worth mentioning in case it's relevant: It turns out the offset changes depending on the orientation of the camera when the photo was taken. If I take the picture with the phone upside-down, for instance, then the image gets offset vertically as well as horizontally. The picker seems to be filling the image's imageOrientation incorrectly: I have to hold the phone sideways, Home button on the left, to get an image with UIImageOrientationUp. At one point I experimented with setting imageView.clipsToBounds = YES;, which revealed that my image view's frame is in fact correct. Rather, it's the UIImage's placement within the UIImageView that gets offset. Fwiw, the image view's contentMode is the default, UIViewContentModeScaleToFill.

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  • MGTwitterEngine

    - by deep8981
    Hi everyne, I am using mgtwitterEngine to integrate twitter functionality.In my application i want response in XML format so i have done all the changes as metion in readme of mgtwiiter for example i have done #define YAJL_AVAILABLE 0 in MGTwitterEngineGlobalHeader.h and define USE_LIBXML 1 in MGTwitterEngine.m file and i am checking that API_FORMAT is xml too but whenever i am getting response i am getting in json format. Please can any one tell me what am i missing? any help would be appreciated. Thaks

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  • How to perform kCATransitionPush animation without any transparency / fade effects

    - by Anthony
    I'm trying to duplicate the "slide up from the bottom" animation that [UIViewController presentModalViewController:animated:] performs but without calling it because I don't want a modal view. The below core animation code comes very close but appears to be changing transparency values of the views during it. At the start of the animation you can partially see through the view sliding up. By the middle/end of the animation the view we are sliding over is fully transparent so we can see behind it. I'd like both to remain fully opaque during this animation. Any ideas on how to stop transparency changes in this code or to otherwise get the "slide up animation" I am looking for without requiring a modal view? UIViewController *nextViewController = [[UIViewController alloc] autorelease]; nextViewController.view.backgroundColor = [UIColor redColor]; CATransition *animation = [CATransition animation]; animation.duration = 3.5; animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; animation.type = kCATransitionPush; animation.subtype = kCATransitionFromTop; [self.navigationController pushViewController:nextViewController animated:NO]; [self.navigationController.view.layer addAnimation:animation forKey:nil];

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  • MKMapView not centered on pin

    - by Val Smith
    Hi all, I have an mkmapview that i'm currently adding pins to, but for some reason when I call [mapView setRegion:[detailItem coordinateRegion] animated:YES]; the pin is off-centered (toward the right side of the screen) on the map. Here is the code for [deailItem coordinateRegion]: - (MKCoordinateRegion)coordinateRegion { MKCoordinateRegion region = { {0.0, 0.0 }, { 0.0, 0.0 } }; region.center = self.coordinate; region.span.longitudeDelta = 0.0075f; region.span.latitudeDelta = 0.0075f; return (region); } I'm setting the coordinateRegion's center to the object's x,y coordinate, so why is it off-center on the map? I feel like there's something I'm missing here... ::Val::

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  • Scrolling png with text & alpha on top of a static UIImageView

    - by heymon
    I have a view controller that has a view structure as follows: FilesOwner FirstResponder View ImageView (.jpg) ScrollView ImageView (.png) The text in the innermost imageview has white text and clear (alpha) all around. I want to scroll the innermost imageview, and see the background image (the .jpg) behind it. Its not working. Its acting like the scrollview background obscures the underneath .jpg. I say this because if I change the background color of the scrollview, that's what I see i.e. if I set it black, I see black behind my .png, if I set it white, I see white. If I change the alpha of the scrollview that doesn't seem to work either. The one other thing I tried was unchecking drawing: Opaque, but that doesn't get it either.

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  • How to change a UIBarButtonItem in a UINavigationBar

    - by pkulak
    I'm trying to set up a list of items that can be edited. I have a main view, with a UINavigationBar at the top and a UITableView directly under it. I'd like to have my "edit" button change to a "done" button on click, but I can't figure out how to do it. If I could do it in the code (not it interface builder), I could just replace it, but I can't even do that. I've seen some code using [self.navigationItem], but in my case self is a UIView. It also feels a bit odd to be using a UINavigationBar when I don't want navigation (this is one page only), but I want a toolbar with a title and and a button, so I don't think really have a choice.

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  • UIWebViewDelegate returns different error message on iPod Touch 2G and 3G

    - by lostInTransit
    Hi I have an app developed using SDK 3.0. My view has a UIWebView whose delegate is the viewcontroller. I want to show an error message when the webview does not load (in case the touch goes out of wifi range or wifi is turned off) I override this method to show an alert - (void)webView:(UIWebView *)wbView didFailLoadWithError:(NSError *)error But this caused an issue when some links were clicked on the webview. The page loaded but if some images from the previous page were not loaded, the method call was triggered. Testing on an iPod Touch 3G, the NSError's userInfo has the localized description as no Internet connection if load fails due to no internet connection. But this only seems to be true for an iPod Touch 3G. 2G shows a different message (I got to know from some beta testers. They aren't very technical so can't tell them to get me the logs or anything.) Can anyone with an iPod Touch 2G tell me the values for the NSError userInfo? Or better still, did anyone else face this issue? How did you resolve it? Thanks.

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  • Monotouch UIScrollView/UIPageView with UITableView as panel

    - by cvista
    Hi I'm building an app which is a guide to festivals. In the app I show lineups. You can see the Ui I have built for this on the video here: http://wmcstar.com/download.html The problem I have is that the scrollview/UIPageView - which does the left/right scrolling through the days, sometimes conflicts (i think) with the up/down scrolling of the days lineup UITableView and crashes. It doesn't crash if I disable scrolling - so the only way to switch between days is by selecting the day and programatically scrolling to the day rather than by using touch gestures. Has anyone else seen this behaviour? w://

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  • Any example on how to implement the new VerificationController and the KNOWN_TRANSACTIONS_KEY constant?

    - by Carles Estevadeordal
    I've been looking at implementing the new VerificationController to verify in-App-Purchases: http://developer.apple.com/library/ios/#releasenotes/StoreKit/IAP_ReceiptValidation/_index.html And I wonder if there is some example anywhere en how to validate a transaction, since it seems that the - (BOOL)verifyPurchase:(SKPaymentTransaction *)transaction; is not enough and it has to be implemented internally to verify the purchase when the data form the server is received. Another question is if anyone has a clue on what the KNOWN_TRANSACTIONS_KEY is and how to fill it, is it just the product id of the purchase?

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  • populate UITableView from json

    - by mcgrailm
    Hello all working on my building my first iDevice app and I am trying to populate a UITableView with data from json result I can get it to load from plist array no propblem and I can even see my json the problem I'm having is that the UITableView never gets to see the json results please bare with me as this is first time with obj-c or anything like it in my .h file @interface TableViewViewController : UIViewController <UITableViewDataSource, UITableViewDelegate> { NSArray *exercises; NSMutableData *responseData; } in my .m file - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return exercises.count; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { //create a cell UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"]; // fill it with contnets cell.textLabel.text = [exercises objectAtIndex:indexPath.row]; // return it return cell; } // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { responseData = [[NSMutableData data] retain]; NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://url_to_json"]]; [[NSURLConnection alloc] initWithRequest:request delegate:self ]; // load from plist //NSString *myfile = [[NSBundle mainBundle] pathForResource:@"exercise" ofType:@"plist"]; //exercises = [[NSArray alloc] initWithContentsOfFile:myfile]; [super viewDidLoad]; } - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [responseData setLength:0]; } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [responseData appendData:data]; } - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { NSLog(@"Connection failed: %@", [error description]); } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { [connection release]; NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; [responseData release]; NSDictionary *dictionary = [responseString JSONValue]; NSArray *response = [dictionary objectForKey:@"response"]; exercises = [[NSArray alloc] initWithArray:response]; }

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  • Objective-C - How to add objects in 2d NSMutableArrays

    - by thary
    Hello, I have this code NSMutableArray *insideArray = [[NSMutableArray alloc] init]; NSMutableArray *outsideArray = [[NSMutableArray alloc] init]; [insideArray addObject:@"Hello 1"]; [insideArray addObject:@"Hello 2"]; [outsideArray addObject:insideArray]; [insideArray removeAllObjects]; [insideArray addObject:@"Hello 3"]; [insideArray addObject:@"Hello 4"]; [outsideArray addObject:insideArray]; The current output is array( ( "Hello 3", "Hello 4" ), ( "Hello 3", "Hello 4" ) ) I need a way to get the output to be array( ( "Hello 1", "Hello 2" ), ( "Hello 3", "Hello 4" ) ) Does anyone have a solution or could see where i've gone wrong? Thanks

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  • Core data many-to-many relationship - Predicate question

    - by Garry
    In my Core Data model I have two entities: List and Patient. List has an attribute called 'name'. A List can have any number of Patients and each Patient can belong to any number of different lists. I have therefore set a relationship on List called 'patients' that has an inverse to-many relationship to Patient AND a relationship on Patient called 'lists' that has a to-many relationship to List. What I'm struggling to figure out is how to create a Predicate that will select all Patients that belong to a particular List name. How would I go about this? I have never used relationships before in Core Data. Thanks,

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  • UITouches not detecting.

    - by Tony
    Hi, My UItouches is not detecting in my Slideshow nib file. What is the problem? Can anyone help? @class Slideshow; @interface RootViewController : UIViewController{ PreferencesController *preferencesController; Slideshow *slideshow;} Slideshow Implementation @implementation Slideshow - (void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event { NSLog(@"touches begin"); } - (void)viewDidLoad { UIImageView *frontView = [[UIImageView alloc] initWithFrame:self.view.bounds]; frontView.backgroundColor = [UIColor blackColor]; frontView.image = [UIImage imageNamed:@"apple.png"]; frontView.userInteractionEnabled = YES; [self.view addSubview:frontView]; [frontView release]; }@end

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