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  • NSUserDefaults not present on first run on simulator

    - by Ben Collins
    I've got some settings saved in my Settings.bundle, and I try to use them in application:didFinishLaunchingWithOptions, but on a first run on the simulator accessing objects by key always returns nil (or 0 in the case of ints). Once I go to the settings screen and then exit, they work fine for every run thereafter. What's going on? Isn't the point of using default values in the Settings.bundle to be able to use them without requiring the user to enter them first?

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  • Getting Data From Webpages?

    - by fuzzygoat
    When looking to get data from a web page whats the recommended method if the page does not provide a structured data feed? Am I right in thinking that its just a case of doing an NSURLRequest and then hacking what you need out of the responseData(NSData*)? I am not too concerned about the implementation in Xcode, I am more curious about actually collecting the data, before I start coding a "hunt & peck" through a list of data. gary

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  • Remove clear button (grey x) to the right of UISearchBar when cancel button tapped

    - by David Foster
    Right, to begin my question, here's some screenies of the problem already solved by the Spotify app: Spotify's Step 1: Standard UISearchBar not in editing mode. Spotify's Step 2: UISearchBar now in editing mode. Search term entered. Cancel button slides in from the right, and the clear button (grey x) appears. Spotify's Step 3: Cancel button pressed; keyboard slides out and the search bar is no longer in editing mode. Search term remains and the grey x button is now hidden. At present, the following code fires off when my cancel button is pressed: - (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar { [searchBar resignFirstResponder]; [searchBar setShowsCancelButton:NO animated:YES]; } Which results in: My Step 3: Search bar now not in editing mode. Cancel button and keyboard has slid out. Search term remains but so does the grey x. So, my question is this: given that -resignFirstResponder (and -endEditing:, FYI) does not hide the grey x button when a search bar has had text entered into it, how does one hide it? Thanks again, friends.

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  • Best way to change XIB files based on rotation?

    - by Graeme
    Hi, My app has so far just been a portrait-based application. However, I am adding landscape mode to a new version, but have found that my XIB files look shocking when rotated from portrait to landscape. Apparently I need to make a landscape version of each XIB and use some code to change with XIB launches based on what rotation occurs. Am I right? If so, where do I go from here? Are there any Apple sample apps utilising this code? FYI - My XIB files just have text in them. Thanks.

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  • Modal Tab Bar ViewController

    - by Kevin Sylvestre
    I need to present a modal tab bar controller using interface builder. I'd like to be able to specify and design the tab bar controller in a InfoViewController.xib file, then present it from a variety of locations within the application using something like: UIViewController *vc = [InfoViewController create]; [self presentModalViewController:vc animated:YES];

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  • Getting Tap/Touch Position when selecting a TableView cell

    - by Omer
    Hi, hope to get some help here because this is something that really makes me mad... I have a view with a tableView, and when I tap a cell I want to present a popOver window pointing the arrow to the cell I tapped. the things that I think I need is: 1- the position of the cell in the screen (not in the view, because on large tables the Y value of the cell's rect could be grater than screen hight) or 2- a CGPoint or something similar that represents the point in the screen I tapped. I can't figured this out, and makes me really mad!!! Any help will very very very very usefull. Have a nice day.

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  • Accessing XML data online?

    - by fuzzygoat
    I am just testing an app to get data off our web server, previously I had been using: NSURL, NSURLRequest, NSURLConnection etc. to get the data that I wanted. But I have just noticed that if I swap to using XML I can simply do the following and pass the results to NSXMLParser: NSURL *url = [NSURL URLWithString:@"https://www.fuzzygoat.com/turbine?nbytes=1&fmt=xml"]; Am I right in thinking that if your just after XML this is an acceptable method? It just seems strongly short compared to what I was doing before? gary

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  • take images from a cell , into next view controller

    - by richard Stephenson
    hi guys , i asked this question yesterday but it doesnt seem to have asked properly so im trying again in my app im parsing in an xml file , in that file there is a path for an image to download an in my tableview controler i have this to download the image and display it in the cell NSURL *url = [NSURL URLWithString:aStory.picture]; NSData *data = [NSData dataWithContentsOfURL:url]; UIImage *img = [[UIImage alloc] initWithData:data]; im then pushing another view controller on the top and displaying some text in a text view , but i also want to take the image from the cell selected and put that in there too , but everything i try does not work. any ideas on how i can do this Thanks in advance Richard

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  • how to extend a protocol for a delegate in objective C, then subclass an object to require a conform

    - by fess .
    I want to subclass UITextView, and send a new message to the delegate. So, I want to extend the delegate protocol, What's the correct way to do this? I started out with this: interface: #import <Foundation/Foundation.h> @class MySubClass; @protocol MySubClassDelegate <UITextViewDelegate> - (void) MySubClassMessage: (MySubClass *) subclass; @end @interface MySubClass : UITextView { } @end implementation: #import "MySubClass.h" @implementation MySubClass - (void) SomeMethod; { if ([self.delegate respondsToSelector: @selector (MySubClassMessage:)]) { [self.delegate MySubClassMessage: self]; } } @end however with that I get the warning: '-MySubClassMessage:' not found in protocol(s). I had one way working where I created my own ivar to store the delegate, then also stored the delegate using [super setDelegate] but that seemed wrong. perhaps it's not. I know I can just pass id's around and get by, but My goal is to make sure that the compiler checks that any delegate supplied to MySubClass conforms to MySubClassDelegate protocol. To further clairfy: @interface MySubClassTester : NSObject { } @implementation MySubClassTester - (void) one { MySubClass *subclass = [[MySubClass alloc] init]; subclass.delegate = self; } @end will produce the warning: class 'MySubClassTester' does not implement the 'UITextViewDelegate' protocol I want it to produce the warning about not implementing 'MySubClassDelegate' protocol instead. Thanks, a bunch. (thanks brad)

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  • Handling touches in UITableViewController

    - by subw
    I want to implement the handling of an additional swipe gesture in my UITableViewController. However, it seems that in the case of tableviews the usual touch handling methods like -[touchesBegan::] of the controller are not called. How can I handle touches on a UITableView?

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  • Error: CLLocationManager headingAvailable

    - by Bubu4711
    I have the following code: In my .h-Header-File: #import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> @interface Compass : UIViewController <CLLocationManagerDelegate> { [...] CLLocationManager *locationManager; } [...] @property(nonatomic, retain) CLLocationManager *locationManager; @end And my .m-File: #import "[FILENAME].h" [...] @synthesize locationManager; - (void)viewDidLoad { [super viewDidLoad]; self.locationManager = [[[CLLocationManager alloc] init] autorelease]; if(locationManager.headingAvailable == NO) { [...] } [...] } And I get the following error Message for "locationManager.headingAvailable": error:request for member 'headingAvailable' in something not a structure or union I've added the CoreLocation framework to my app... Who can help me?

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  • Why won't my UISearchDisplayController fire the shouldReloadTableForSearchString method when I enter

    - by Gorgando
    I've been following Apple's TableSearch code example, but it's not working for me and I think I'm doing everything the same way they did it. The method below should be fired whenever the user types anything into the search box, but it never gets fired for me, just on the sample app. I have the appropriate @interface ContactsTableVC : UITableViewController { in the header file. I'm not sure what I'm missing or where else to look. My NSLog never gets called. Thanks for the help! - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString searchScope:(NSInteger)searchOption { NSLog(@"The shouldreloadtableforsearchstring method has been called!"); [self filterContentForSearchText:searchString]; // Return YES to cause the search result table view to be reloaded. return YES; }

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  • How we should load the MFMailViewController in cocos2d ?

    - by srikanth rongali
    I am writing an app in using cocos2d. This method I have written for the selector goToFirstScreen: . The view is in landscape mode. I need to send an email. So, I need to launch the MFMailComposeViewController. I need it in portrait mode. But, the control is not entering in to viewDidLoad of the mailMe class. The problem is in goToScreen: method. But, I do not get where I am wrong ? -(void)goToFirstScreen:(id)sender { NSLog(@"goToFirstScreen: "); CCScene *Scene = [CCScene node]; CCLayer *Layer = [mailME node]; [Scene addChild:Layer]; [[CCDirector sharedDirector] setAnimationInterval:1.0/60]; [[CCDirector sharedDirector] pushScene: Scene]; } This is my mailMe class to launch mail controller #import <UIKit/UIKit.h> #import <MessageUI/MessageUI.h> #import <MessageUI/MFMailComposeViewController.h> #import "cocos2d.h" @interface mailME : CCLayer <MFMailComposeViewControllerDelegate> { UIViewController *mailComposer; } -(void)displayComposerSheet; -(void)launchMailAppOnDevice; @end #import "mailME.h" @implementation mailME -(void)viewDidLoad { NSLog(@"Enetrd in to mail"); Class mailClass = (NSClassFromString(@"MFMailComposeViewController")); if (mailClass != nil) { if ([mailClass canSendMail]) { [self displayComposerSheet]; } else { [self launchMailAppOnDevice]; } } else { [self launchMailAppOnDevice]; } } -(void)displayComposerSheet { CCDirector *director = [CCDirector sharedDirector]; [director pause]; [director stopAnimation]; [director.openGLView setUserInteractionEnabled:NO]; mailComposer = [[UIViewController alloc] init]; [mailComposer setView:[[CCDirector sharedDirector]openGLView]]; [mailComposer setModalTransitionStyle:UIModalTransitionStyleCoverVertical]; MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; [picker setSubject:@"Hello!"]; NSArray *toRecipients = [NSArray arrayWithObject:@"[email protected]"]; [picker setToRecipients:toRecipients]; NSString *emailBody = @"It is not working!"; [picker setMessageBody:emailBody isHTML:YES]; [mailComposer presentModalViewController:picker animated:NO]; [picker release]; } - (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { switch (result) { case MFMailComposeResultCancelled: break; case MFMailComposeResultSaved: break; case MFMailComposeResultSent: break; case MFMailComposeResultFailed: break; default: break; } [mailComposer dismissModalViewControllerAnimated:NO]; [[UIApplication sharedApplication] setStatusBarOrientation:CCDeviceOrientationLandscapeLeft animated:NO]; CCDirector *director = [CCDirector sharedDirector]; [director.openGLView setUserInteractionEnabled:YES]; [director startAnimation]; [director resume]; [mailComposer.view.superview removeFromSuperview]; } -(void)launchMailAppOnDevice { NSString *recipients = @"mailto:[email protected]?&subject=Hello!"; NSString *body = @"&body=It is not working"; NSString *email = [NSString stringWithFormat:@"%@%@", recipients, body]; email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]]; } - (void)dealloc { [super dealloc]; } @end

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  • NSNumberFormatter weirdness with NSNumberFormatterPercentStyle

    - by rein
    Hi, I need to parse some text in a UITextField and turn it into a percentage. Ideally, I'd like the user to either type something like 12 or 12% into the text field and have that be parsed into a number as a percentage. Here's what's weird. The number formatter seems to not like 12 and seems to divide 12% by 10000 instead of 100: NSNumberFormatter *formatter = [[[NSNumberFormatter alloc] init] autorelease]; [formatter setNumberStyle:NSNumberFormatterPercentStyle]; NSNumber *n1 = [formatter numberFromString:@"12"]; NSNumber *n2 = [formatter numberFromString:@"12%"]; NSLog(@"n1 = %@", n1); // n1 = (null) NSLog(@"n2 = %@", n2); // n2 = 0.0012 How do I get the formatter to return 0.12 as expected? EDIT: it seems to only happen if the formatter fails first. If the formatter does not fail it returns 0.12 as expected. Strange.

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  • Is there a way to read what NSLog is writing from within the app?

    - by Jared P
    I have already tried stderr = stdout = fopen("/Users/Jared/Desktop/Untitled.txt", "w"); just as a test (obvi not production code) and this works fine for printf and some errors, but fails to redirect NSLog. I would like to be able to read what is being sent to NSLog as a string, and preferably prevent it from actually going into the system logs, although I don't particularly care if it has to. I need it to redirect logging from both my own code and apple's frameworks, which is why I can't just write a function that would append logs to a string. Thanks

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  • Reading email address from contacts fails with weird memory issue - Solved

    - by CapsicumDreams
    Hi all, I'm stumped. I'm trying to get a list of all the email address a person has. I'm using the ABPeoplePickerNavigationController to select the person, which all seems fine. I'm setting my ABRecordRef personDealingWith; from the person argument to - (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier { and everything seems fine up till this point. The first time the following code executes, all is well. When subsequently run, I can get issues. First, the code: // following line seems to make the difference (issue 1) // NSLog(@"%d", ABMultiValueGetCount(ABRecordCopyValue(personDealingWith, kABPersonEmailProperty))); // construct array of emails ABMultiValueRef multi = ABRecordCopyValue(personDealingWith, kABPersonEmailProperty); CFIndex emailCount = ABMultiValueGetCount(multi); if (emailCount > 0) { // collect all emails in array for (CFIndex i = 0; i < emailCount; i++) { CFStringRef emailRef = ABMultiValueCopyValueAtIndex(multi, i); [emailArray addObject:(NSString *)emailRef]; CFRelease(emailRef); } } // following line also matters (issue 2) CFRelease(multi); If compiled as written, the are no errors or static analysis problems. This crashes with a *** -[Not A Type retain]: message sent to deallocated instance 0x4e9dc60 error. But wait, there's more! I can fix it in either of two ways. Firstly, I can uncomment the NSLog at the top of the function. I get a leak from the NSLog's ABRecordCopyValue every time through, but the code seems to run fine. Also, I can comment out the CFRelease(multi); at the end, which does exactly the same thing. Static compilation errors, but running code. So without a leak, this function crashes. To prevent a crash, I need to haemorrhage memory. Neither is a great solution. Can anyone point out what's going on? Solution: It turned out that I wasn't storing the ABRecordRef personDealingWith var correctly. I'm still not sure how to do that properly, but instead of having the functionality in another routine (performed later), I'm now doing the grunt-work in the delegate method, and using the derived results at my leisure. The new (working) routine: - (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person { // as soon as they select someone, return personDealingWithFullName = (NSString *)ABRecordCopyCompositeName(person); personDealingWithFirstName = (NSString *)ABRecordCopyValue(person, kABPersonFirstNameProperty); // construct array of emails [personDealingWithEmails removeAllObjects]; ABMutableMultiValueRef multi = ABRecordCopyValue(person, kABPersonEmailProperty); if (ABMultiValueGetCount(multi) > 0) { // collect all emails in array for (CFIndex i = 0; i < ABMultiValueGetCount(multi); i++) { CFStringRef emailRef = ABMultiValueCopyValueAtIndex(multi, i); [personDealingWithEmails addObject:(NSString *)emailRef]; CFRelease(emailRef); } } CFRelease(multi); return NO; }

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  • where should we send notification for updating many views?

    - by Thanh-Cong Vo
    Hi all, I want to ask about software design. I have a task, the view controller handles UI event for calling a model manger to perform that task. After finishing, the model manager will callback to update the view. There have also other views who care about that task, and also want to update its own view when that task is finished. So I register a Notification for that task in each views. The problem is defining where should I send Notification, in Model manager or in the View who handles event and receives the callback from Model manager? What is better design? Shoud the model care about send this "common" task, or shoud the view? Thanks

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  • UISearchbar clearButton forces the keyboard to appear

    - by DASKAjA
    I have a UISearchBar which acts as a live filter for a table view. When the keyboard is dismissed via endEditing:, the query text and the gray circular "clear" button remain. From here, if I tap the gray "clear" button the keyboard reappears as the text is cleared. How do I prevent this? If the keyboard is not currently open I want that button to clear the text without reopening the keyboard. There is a protocol method that gets called when I tap the clear button. But sending the UISearchBar a resignFirstResponder message doesn't have any effect on the keyboard.

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  • add animation to layer's path in cocos2d

    - by greg rock
    so i'm on cocos2d but before I was on a normal ios app and I had this code : -(void)viewDidLoad{ rootLayer = [[CALayer alloc] init]; [imageView.layer addSublayer:rootLayer]; roundPath = CGPathCreateMutable(); CGPathMoveToPoint(roundPath, nil, center.x , center.y - 35); CGPathAddArcToPoint(roundPath, nil, center.x + 35, center.y - 35, center.x + 35, center.y + 35, 35); CGPathAddArcToPoint(roundPath, nil, center.x + 35, center.y + 35, center.x - 35, center.y + 35, 35); CGPathAddArcToPoint(roundPath, nil, center.x - 35, center.y + 35, center.x - 35, center.y, 35); CGPathAddArcToPoint(roundPath, nil, center.x - 35, center.y - 35, center.x, center.y - 35, 35); CGPathCloseSubpath(roundPath); //Box Path boxPath = CGPathCreateMutable(); CGPathMoveToPoint(boxPath, nil, center.x , center.y - 35); CGPathAddArcToPoint(boxPath, nil, center.x + 35, center.y - 35, center.x + 35, center.y + 35, 4.7); CGPathAddArcToPoint(boxPath, nil, center.x + 35, center.y + 35, center.x - 35, center.y + 35, 4.7); CGPathAddArcToPoint(boxPath, nil, center.x - 35, center.y + 35, center.x - 35, center.y, 4.7); CGPathAddArcToPoint(boxPath, nil, center.x - 35, center.y - 35, center.x, center.y - 35, 4.7); CGPathCloseSubpath(boxPath); shapeLayer = [CAShapeLayer layer]; shapeLayer.path = boxPath; [rootLayer addSublayer:shapeLayer]; } -(void)startAnimation { CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"path"]; animation.duration = 2.0; animation.repeatCount = HUGE_VALF; animation.autoreverses = YES; animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; animation.fromValue = (id)boxPath; animation.toValue = (id)roundPath; [shapeLayer addAnimation:animation forKey:@"animatePath"]; } But I didn't found a way to do the animation fromboxpath toroundpath on cocos2d, I don't know what CCAction use . Can anybody help me ? sorry for my english I'm french :/

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  • NSUserDefaults not saving properly

    - by BWC
    Hey Guys I'm having issues with NSUserDefaults and I don't quite understand what's going on My App has 5 levels and each level does the exact same thing with NSUserDefaults (Retrieves the levels defaults, changes the value as the user plays the level and then sets the defaults and syncronizes at the end of the level) the first 4 levels...work without a hitch but the last level doesn't save the values. The app doesn't crash and the last level isn't the very last thing that happens, And I even have the defaults synchronized when the application terminates. Is there a max size on the NSUserDefaults or is there anything anyone can think of that I haven't, I'll post the code below but like I said the first four levels work perfectly //header NSUserDefaults *userData; @property(nonatomic,retain) NSUserDefaults *userData; //class file //Sets the boolean variables for the class to use userData = [NSUserDefaults standardUserDefaults]; boolOne = [userData boolForKey:@"LevelFiveBoolOne"]; boolTwo = [userData boolForKey:@"LevelFiveBoolTwo"]; boolThree = [userData boolForKey:@"LevelFiveBoolThree"]; boolFour = [userData boolForKey:@"LevelFiveBoolFour"]; boolFive = [userData boolForKey:@"LevelFiveBoolFive"]; boolSix = [userData boolForKey:@"LevelFiveBoolSix"]; boolSeven = [userData boolForKey:@"LevelFiveBoolSeven"]; //End Of Level [userData setBool:boolOne forKey:@"LevelFiveBoolOne"]; [userData setBool:boolTwo forKey:@"LevelFiveBoolTwo"]; [userData setBool:boolThree forKey:@"LevelFiveBoolThree"]; [userData setBool:boolFour forKey:@"LevelFiveBoolFour"]; [userData setBool:boolFive forKey:@"LevelFiveBoolFive"]; [userData setBool:boolSix forKey:@"LevelFiveBoolSix"]; [userData setBool:boolSeven forKey:@"LevelFiveBoolSeven"]; [userData synchronize]; When when I switch to the view that uses these defaults they values are correct but when I terminate the application and restart it, these values aren't saved, every other level does the exact same process this is the only level that doesn't work. I've stared at this for quite awhile and I'm hoping someone out there has run into the same problem and can give me some insight on how they resolved it. Thank you in Advance BWC

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  • iPad SDK, how to handle orientation with an UIImageView

    - by Salah
    Hello I'm developing an app for iPad and I try to handle multiple orientation. My app contains a webview and a loading UIImageView that appears when my webview is loading content. This UIImageView has a background image that I set in InterfaceBuilder. When I change orientation to landscape, the image is cut. I'd like the UIImageView to set image-portrait.png when the ipad is in portrait mode and image-landscape.png when it's in landscape mode. Thank you for your help and advices! Screenshots :

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  • UIPickerView Custom Font

    - by Lee Armstrong
    I have the following code that I have found and tried to implement. I want to set the UIPickerView to have labels that I can customize the text in... When loading this it is just blank at the moment! - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view { UILabel *pickerLabel = (UILabel *)view; NSString *text = @"TTT"; // Reuse the label if possible, otherwise create and configure a new one if ((pickerLabel == nil) || ([pickerLabel class] != [UILabel class])) { //newlabel CGRect frame = CGRectMake(0.0, 0.0, 270, 32.0); pickerLabel = [[[UILabel alloc] initWithFrame:frame] autorelease]; pickerLabel.textAlignment = UITextAlignmentLeft; pickerLabel.backgroundColor = [UIColor clearColor]; pickerLabel.font = [UIFont fontWithName:@"AmericanTypewriter" size:28]; } pickerLabel.textColor = [UIColor brownColor]; return pickerLabel; }

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