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  • How to deal with background image orientation in UIView

    - by docchang
    I'm using setting the background image using methodology below. When I rotate my device the background repeats, which make sense because it is not an image. How do I deal with orientation change if this is the way I'm setting my background image? - (void)viewDidLoad { [super viewDidLoad]; UIColor *background = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"background.png"]]; self.view.backgroundColor = background; [background release]; }

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  • Why doesn’t ABPersonViewController show any properties besides the name?

    - by abrahamvegh
    For some reason, ABPersonViewController is unwilling to display any properties aside from the name, no matter what properties are set for it to display. I’m unable to use the AddressBookUI controllers to let a user select a contact to display, since my UI has custom requirements, otherwise I’d go that route (as Apple does in their sample project.) Here’s the code that doesn’t work — am I missing something? - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // ABContact is of my own creation ABContact *contact = [self contactAtIndexPath: indexPath]; ABPersonViewController *viewController = [[ABPersonViewController alloc] init]; // This returns a valid ABRecordRef, as indicated by the fact that the // controller does display the name of this contact when it is loaded viewController.displayedPerson = contact.record; // Copied directly from Apple’s QuickContacts sample project NSArray *displayedItems = [NSArray arrayWithObjects:[NSNumber numberWithInt:kABPersonPhoneProperty], [NSNumber numberWithInt:kABPersonEmailProperty], [NSNumber numberWithInt:kABPersonBirthdayProperty], nil]; viewController.displayedProperties = displayedItems; [self.navigationController pushViewController: viewController animated: YES]; [viewController release]; }

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  • Saving Multiple Annotations -NSUserDefaults

    - by casillas
    I came cross this code as shown below.In the following code, I could able to save only one single annotation, however I have an array of annotations, I could not able to save them with single NSUserDefaults To save: NSUserDefaults *ud = [NSUserDefaults standardUserDefaults]; [ud setDouble:location.latitude forKey:@"savedCoordinate-latitude"]; [ud setDouble:location.longitude forKey:@"savedCoordinate-longitude"]; [ud setBool:YES forKey:@"savedCoordinate-exists"]; [ud synchronize]; Edited: -(void)viewDidLoad NSUserDefaults *ud=[NSUserDefaults standardUserDefaults]; if([ud boolForKey:@"save-exist"]) { NSMutableArray *udAnnotations=[[NSMutableArray alloc]initWithArray: [ud objectForKey:@"annotationsArray"]]; NSLog(@"%d",[udAnnotations count]); } else{ [self addAnno]; } -(void)addAnno { [mapView addAnnotations:annotationArray]; NSUserDefaults *ud=[NSUserDefaults standardUserDefaults]; [ud setObject:annotationArray forKey:@"annotationsArray"]; [ud setBool:YES forKey:@"save-exist"]; [ud synchronize]; }

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  • NSMutableArray to NSString and Passing NSString to Another View IOS5.1

    - by Space Dust
    I have an NSMutableArray of names. I want the pass the data (selected name) inside of NSMutableArray as text to another view's label. FriendsController.m: - (void)viewDidLoad { [super viewDidLoad]; arrayOfNames=[[NSMutableArray alloc] init]; arrayOfIDs=[[NSMutableArray alloc] init]; userName=[[NSString alloc] init]; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { long long fbid = [[arrayOfIDs objectAtIndex:indexPath.row]longLongValue]; NSString *user=[NSString stringWithFormat:@"%llu/picture",fbid]; [facebook requestWithGraphPath:user andDelegate:self]; userName=[NSString stringWithFormat:@"%@",[arrayOfNames objectAtIndex:indexPath.row]]; FriendDetail *profileDetailName = [[FriendDetail alloc] initWithNibName: @"FriendDetail" bundle: nil]; profileDetailName.nameString=userName; [profileDetailName release]; } - (void)request:(FBRequest *)request didLoad:(id)result { if ([result isKindOfClass:[NSData class]]) { transferImage = [[UIImage alloc] initWithData: result]; FriendDetail *profileDetailPicture = [[FriendDetail alloc] initWithNibName: @"FriendDetail" bundle: nil]; [profileDetailPicture view]; profileDetailPicture.profileImage.image= transferImage; profileDetailPicture.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self presentModalViewController:profileDetailPicture animated:YES]; [profileDetailPicture release]; } } In FriendDetail.h NSString nameString; IBOutlet UILabel *profileName; @property (nonatomic, retain) UILabel *profileName; @property (nonatomic, retain) NSString *nameString; In FriendDetail.m - (void)viewDidLoad { [super viewDidLoad]; profileName.text=nameString; } nameString in second controller(FriendDetail) returns nil. When i set a breakpoint in firstcontroller I see the string inside of nameString is correct but after that it returns to nil somehow.

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  • How to resolve a NULL cString crash

    - by hanumanDev
    I'm getting a crash with the following encoding fix I'm trying to implement: // encoding fix NSString *correctStringTitle = [NSString stringWithCString:[[item objectForKey:@"main_tag"] cStringUsingEncoding:NSISOLatin1StringEncoding] encoding:NSUTF8StringEncoding]; cell.titleLabel.text = [correctStringTitle capitalizedString]; my crash log output states: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** +[NSString stringWithCString:encoding:]: NULL cString' thanks for any help

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  • Migration Core Data error code 134130

    - by magichero
    I want to do migration with 2 core database. I have read apple developer document. For the first database, I add some attributes (string, integer and date properties) to new version database. And follow all steps, I have done migration successfully with the first once. But the second database, I also add attributes (string, integer, date, transformable and binary-data properties) to new version database. And follow all steps (like the first database) but system return an error (134130). Here is the code: if (persistentStoreCoordinator_) { PMReleaseSafely(persistentStoreCoordinator_); } // Notify NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; [nc postNotificationName:GCalWillMigrationNotification object:self]; // NSString *sourceStoreType = NSSQLiteStoreType; NSString *dataStorePath = [PMUtility dataStorePathForName:GCalDBWarehousePersistentStoreName]; NSURL *storeURL = [NSURL fileURLWithPath:dataStorePath]; BOOL storeExists = [[NSFileManager defaultManager] fileExistsAtPath:dataStorePath]; // NSError *error = nil; NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; persistentStoreCoordinator_ = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:self.managedObjectModel]; [persistentStoreCoordinator_ addPersistentStoreWithType:sourceStoreType configuration:nil URL:storeURL options:options error:&error]; if (error != nil) { abort(); } error is not nil and below is log: Error Domain=NSCocoaErrorDomain Code=134130 "The operation couldn\u2019t be completed. (Cocoa error 134130.)" UserInfo=0x856f790 {URL=file://localhost/Users/greensun/Library/Application%20Support/iPhone%20Simulator/5.0/Applications/D10712DE-D9FE-411A-8182-C4F58C60EC6D/Library/Application%20Support/Promise%20Mail/GCalDBWarehouse.sqlite, metadata={type = immutable dict, count = 7, entries = 2 : {contents = "NSStoreModelVersionIdentifiers"} = {type = immutable, count = 1, values = ( 0 : {contents = ""} )} 4 : {contents = "NSPersistenceFrameworkVersion"} = {value = +386, type = kCFNumberSInt64Type} 6 : {contents = "NSStoreModelVersionHashes"} = {type = immutable dict, count = 2, entries = 0 : {contents = "SyncEvent"} = {length = 32, capacity = 32, bytes = 0xfdae355f55c13fbd0344415fea26c8bb ... 4c1721aadd4122aa} 1 : {contents = "ImportEvent"} = {length = 32, capacity = 32, bytes = 0x7676888f0d7eaff4d1f844343028ce02 ... 040af6cbe8c5fd01} } 7 : {contents = "NSStoreUUID"} = {contents = "51678BAC-CCFB-4D00-AF5C-8FA1BEDA6440"} 8 : {contents = "NSStoreType"} = {contents = "SQLite"} 9 : {contents = "_NSAutoVacuumLevel"} = {contents = "2"} 10 : {contents = "NSStoreModelVersionHashesVersion"} = {value = +3, type = kCFNumberSInt32Type} }, reason=Can't find model for source store} I try a lot of solutions but it does not work. I just add more attributes to 2 new version database, and succeed in migrating once. Thanks for reading and your help.

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  • dictationRecordingDidEnd never called

    - by optme
    I am using a UITextView and added UITextInputDelegate in my view controller. I have implemented textDidChange and dictationRecordingDidEnd methods. The textDidChange and dictationRecordingDidEnd are never called. Please help. In MyViewController.h file @interface MyViewController : UIViewController <UITextViewDelegate, UITextInputDelegate> { } In MyViewController.m file - (void) textDidChange:(id<UITextInput>)textInput { } - (void)dictationRecordingDidEnd { } - (void)dictationRecognitionFailed { textViewResults.text = @"Dictation Failed"; }

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  • iPad: Displaying UIActionSheet with UIPickerView as subview

    - by E-Madd
    I'm in the process of migrating an iPhone app to a universal app. On one of my views, I present a UIActionSheet with a UIPickerView as a subview. On the iPhone this always worked just fine. Of course, on the iPad I had to change a little to present the ActionSheet in a popover control. Here's some psuedo-code to outline where I'm at... actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil]; pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0,44,0,0)]; pickerView.delegate = self; pickerView.dataSource = self; pickerView.showsSelectionIndicator = YES; [actionSheet addSubview:pickerView]; if (UI_USER_INTERFACE_IDIOM() != UIUserInterfaceIdiomPad){ [actionSheet showInView:self.view]; [actionSheet setBounds:actRect]; }else{ [actionSheet showFromRect:buttonRect inView:[UIApplication sharedApplication].keyWindow animated:YES]; } The resulting popover on the iPad is very small and only the very top of the UIPickerView is visible. How can I set the size of the popover?

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  • Get the UIWindow which is under the UIActionSheet

    - by Georgi
    I am trying to present a new UIViewController on top of the current current UIViewController. Here is the line of code that creates the desired effect: LoginViewController *loginViewController = [[LoginViewController alloc] initWithNibName:@"LoginViewController" bundle:nil]; UIViewController *rootController = [[[UIApplication sharedApplication] keyWindow] rootViewController]; [rootController presentViewController:loginViewController animated:YES completion:nil]; The problem is that I added an UIActionSheet which asks the user to confirm the desired action (which is to log out). When the user confirms the action I run the above mentioned peace of code, but the UIActionSheet is still the keyWindow. Therefore the LoginViewController is not presented on top (the rootController is null when I try to debug). My question is: Can I somehow find the UIWindow which is under the UIActionSheet and from there get the root controller,or maybe I can dismiss programmatically the UIActionSheet when the users selects the log out action and only then execute the above code? Thank you in advance!

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  • GIgya Native Login without using Facebook and Twitter Account

    - by Wodjefer
    Following code that i am using to login but i am getting a Null response - (IBAction) signInPressed : (id)sender { [super signInPressed:sender]; NSLog(@"ACCLoginViewController_iPhone Sign-IN Pressed"); //Load the Gigya login UI component, passing this View Controller as a delegate. GSRequest *request = [GSRequest requestForMethod:@"accounts.login"]; [request.parameters setObject:self.emailField.text forKey:@"loginID"]; [request.parameters setObject:self.passwordField.text forKey:@"password"]; request.parameters[@"loginID"] = @"email"; [request sendWithResponseHandler:^(GSResponse *response, NSError *error) { if (!error) { NSLog(@"the resposne = %@",response); } else { // Check the error code according to the GSErrorCode enum, and handle it. NSLog(@"the Error = %@",error.description); } }]; // [self loadTabbar]; }

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  • UITabBarController unresponsive for touches

    - by JustSid
    So, I have this view hierarchy in my app: UIWindow UIViewController UITabBarController -> 4 UINavigationController I know that a UITabBarController is designed to be the topmost view in an app, however this isn't possible in my case. However, the problem that I have is that ~20 of the lower pixels aren't responsive for touches so that the UITabBarController doesn't trigger the tab changes correctly. This happens on an actual device (iPad and iPhone 3G). My question is, are there any obvious reasons why this could happen? I add the UITabBarController like this as subview to my UIViewController view: - (void)viewDidLoad { [super viewDidLoad]; [self.view addSubview:controller.view]; // Controller is the UITabBarController } I didn't set the UITabBarController's delegate.

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  • Automatically created NSManagedObject subclasses don't use ARC

    - by Jordan
    My project is ARC enabled (the build settings have Objective-C Reference Counting set to YES). There are no file exceptions to this, it is enabled project wide. (Latest stable version of Xcode). When I create an NSManagedObject subclass via File New for a Core Data entity, the generated header uses the following in its property declarations: @property (nonatomic, retain) But 'retain' is not ARC!! Is this a bug, or is there something I'm missing or not understanding? There are no build warnings - if this is a bug though, how can I remedy it?

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  • prevent UIWebView inputs from displaying UIKeyboard without disabling user interaction

    - by Slee
    I have a UIWebView that loads and external product configuration web service UI that is basically a bunch of dependent Drop Down lists. The problem is the Drop Downs are basically enhanced text input's so when the user taps them to display the options the UIKeyboard keeps popping up and own after they make their selection. it is less than a fluid process. Is there anyway to suppress the html inputs from triggering the UIKeyboard?

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  • Memory Leaks - Objective-C

    - by reising1
    Can anyone help point out memory leaks? I'm getting a bunch within this method and I'm not sure exactly how to fix it. - (NSMutableArray *)getTop5AndOtherKeysAndValuesFromDictionary:(NSMutableDictionary *)dict { NSLog(@"get top 5"); int sumOfAllValues = 0; NSMutableArray *arr = [[[NSMutableArray alloc] init] retain]; for(NSString *key in dict){ NSString *value = [[dict objectForKey:key] retain]; [arr addObject:value]; sumOfAllValues += [value intValue]; } //sort values NSArray *sorted = [[arr sortedArrayUsingFunction:sort context:NULL] retain]; [arr release]; //top 5 values int sumOfTop5 = 0; NSMutableArray *top5 = [[[NSMutableArray alloc] init] retain]; for(int i = 0; i < 5; i++) { int proposedIndex = [sorted count] - 1 - i; if(proposedIndex >= 0) { [top5 addObject:[sorted objectAtIndex:([sorted count] - i - 1)]]; sumOfTop5 += [[sorted objectAtIndex:([sorted count] - i - 1)] intValue]; } } [sorted release]; //copy of all keys NSMutableArray *copyOfKeys = [[[NSMutableArray alloc] init] retain]; for(NSString *key in dict) { [copyOfKeys addObject:key]; } //copy of top 5 values NSMutableArray *copyOfTop5 = [[[NSMutableArray alloc] init] retain]; for(int i = 0; i < [top5 count]; i++) { [copyOfTop5 addObject:[top5 objectAtIndex:i]]; } //get keys with top 5 values NSMutableArray *outputKeys = [[[NSMutableArray alloc] init] retain]; for(int i = 0; i < [top5 count]; i++) { NSString *targetValue = [top5 objectAtIndex:i]; for(int j = 0; j < [copyOfKeys count]; j++) { NSString *key = [copyOfKeys objectAtIndex:j]; NSString *val = [dict objectForKey:key]; if([val isEqualToString:targetValue]) { [outputKeys addObject:key]; [copyOfKeys removeObjectAtIndex:j]; break; } } } [outputKeys addObject:@"Other"]; [top5 addObject:[[NSString stringWithFormat:@"%d",(sumOfAllValues - sumOfTop5)] retain]]; NSMutableArray *output = [[NSMutableArray alloc] init]; [output addObject:outputKeys]; [output addObject:top5]; NSMutableArray *percents = [[NSMutableArray alloc] init]; int sum = sumOfAllValues; float leftOverSum = sum * 1.0f; int count = [top5 count]; float val1, val2, val3, val4, val5; if(count >= 1) val1 = ([[top5 objectAtIndex:0] intValue] * 1.0f)/sum; else val1 = 0.0f; if(count >=2) val2 = ([[top5 objectAtIndex:1] intValue] * 1.0f)/sum; else val2 = 0.0f; if(count >= 3) val3 = ([[top5 objectAtIndex:2] intValue] * 1.0f)/sum; else val3 = 0.0f; if(count >= 4) val4 = ([[top5 objectAtIndex:3] intValue] * 1.0f)/sum; else val4 = 0.0f; if(count >=5) val5 = ([[top5 objectAtIndex:4] intValue] * 1.0f)/sum; else val5 = 0.0f; if(val1 >= .00001f) { NSMutableArray *a1 = [[NSMutableArray alloc] init]; [a1 addObject:[outputKeys objectAtIndex:0]]; [a1 addObject:[top5 objectAtIndex:0]]; [a1 addObject:[NSString stringWithFormat:@"%.01f",(val1*100)]]; [percents addObject:a1]; leftOverSum -= ([[top5 objectAtIndex:0] intValue] * 1.0f); } if(val2 >= .00001f) { NSMutableArray *a2 = [[NSMutableArray alloc] init]; [a2 addObject:[outputKeys objectAtIndex:1]]; [a2 addObject:[top5 objectAtIndex:1]]; [a2 addObject:[NSString stringWithFormat:@"%.01f",(val2*100)]]; [percents addObject:a2]; leftOverSum -= ([[top5 objectAtIndex:1] intValue] * 1.0f); } if(val3 >= .00001f) { NSMutableArray *a3 = [[NSMutableArray alloc] init]; [a3 addObject:[outputKeys objectAtIndex:2]]; [a3 addObject:[top5 objectAtIndex:2]]; [a3 addObject:[NSString stringWithFormat:@"%.01f",(val3*100)]]; [percents addObject:a3]; leftOverSum -= ([[top5 objectAtIndex:2] intValue] * 1.0f); } if(val4 >= .00001f) { NSMutableArray *a4 = [[NSMutableArray alloc] init]; [a4 addObject:[outputKeys objectAtIndex:3]]; [a4 addObject:[top5 objectAtIndex:3]]; [a4 addObject:[NSString stringWithFormat:@"%.01f",(val4*100)]]; [percents addObject:a4]; leftOverSum -= ([[top5 objectAtIndex:3] intValue] * 1.0f); } if(val5 >= .00001f) { NSMutableArray *a5 = [[NSMutableArray alloc] init]; [a5 addObject:[outputKeys objectAtIndex:4]]; [a5 addObject:[top5 objectAtIndex:4]]; [a5 addObject:[NSString stringWithFormat:@"%.01f",(val5*100)]]; [percents addObject:a5]; leftOverSum -= ([[top5 objectAtIndex:4] intValue] * 1.0f); } float valOther = (leftOverSum/sum); if(valOther >= .00001f) { NSMutableArray *a6 = [[NSMutableArray alloc] init]; [a6 addObject:[outputKeys objectAtIndex:5]]; [a6 addObject:[top5 objectAtIndex:5]]; [a6 addObject:[NSString stringWithFormat:@"%.01f",(valOther*100)]]; [percents addObject:a6]; } [output addObject:percents]; NSLog(@"mu - a"); //[arr release]; NSLog(@"mu - b"); //[copyOfKeys release]; NSLog(@"mu - c"); //[copyOfTop5 release]; NSLog(@"mu - c"); //[outputKeys release]; //[top5 release]; //[percents release]; return output; }

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  • UIImagePickerController shows last picture taken instead of camera input

    - by jules
    I'm having a strange behaviour within my app. For taking pictures i'm using the following pretty standard code for displaying the UIImagePickerController: UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.delegate = self; picker.allowsEditing = NO; picker.sourceType = UIImagePickerControllerSourceTypeCamera; [self presentViewController:picker animated:YES completion:nil]; It works perfectly fine the first time I tap the button which calls this action. The strange behaviour starts when I tap that button again. The UIImagePickerController starts again BUT it doesnt show the input from the camera anymore. It shows the last picture I've taken. More Details of this state: Tapping on the image shows the yellow square of the auto focus. (which it actually uses to focus the camera correctly) When I tap on the ImageCapture button - the correct image is taken and presented on the screen. If I take a picture and press 'Retake' the regular camera image is presented as input. More weirdness: It has nothing to do with the iPad I'm using. Creating a new example app which only has button which calls the code from above everything works perfectly fine. I assume it has something to do with the configuration of the app. Therefore I checked everything but could not find any differences which may cause this issue. Thanks in advance for any advice! Update: I do implement the UIImagePickerControllerDelegate in order to dismiss the UIImagePickerController.

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  • iPhone App development for non-programmers

    - by user645479
    I have a English major during college and would like to start my career in mobile application development. I know this won't be easy for someone like me who doesn't have a technical background but I have made up my mind and I am committed to learning to code. What would you recommend to someone who wants to to start learning mobile application development from scratch? What books or college courses/certificates are required?

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  • iPhone 4.0 SDK UIWebView crashes with DOMHTMLElement error..

    - by hytgbn
    My app have an UIWebView and I open a twitter oauth page with it. when I open oauth page , it works well. after I sign-in, it redirects to another page which have PIN code. and It crashes down with logs below. Is it a bug in 4.0 SDK? 2010-06-14 22:55:11.159 AllFx[1435:2003] -[DOMHTMLElement setHref:]: unrecognized selector sent to instance 0x74e4040 2010-06-14 22:55:11.162 AllFx[1435:2003] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[DOMHTMLElement setHref:]: unrecognized selector sent to instance 0x74e4040' *** Call stack at first throw: ( 0 CoreFoundation 0x02b6c919 __exceptionPreprocess + 185 1 libobjc.A.dylib 0x02cba5de objc_exception_throw + 47 2 CoreFoundation 0x02b6e42b -[NSObject(NSObject) doesNotRecognizeSelector:] + 187 3 CoreFoundation 0x02ade116 ___forwarding___ + 966 4 CoreFoundation 0x02addcd2 _CF_forwarding_prep_0 + 50 5 DataDetectorsUI 0x0bde8ac4 -[WebTextIterator(DDExtensions) dd_doUrlificationForQuery:forResults:document:DOMWasModified:URLificationBlock:] + 1731 6 DataDetectorsUI 0x0bde2f09 -[DDOperation _doURLificationOnDocument] + 341 7 DataDetectorsUI 0x0bddff9c -[DDDetectionController _doURLificationOnWebThreadAndRelease:] + 563 8 CoreFoundation 0x02add42d __invoking___ + 29 9 CoreFoundation 0x02add301 -[NSInvocation invoke] + 145 10 WebCore 0x039fa2b3 _ZL15HandleAPISourcePv + 147 11 CoreFoundation 0x02b4dd7f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15 12 CoreFoundation 0x02aac2cb __CFRunLoopDoSources0 + 571 13 CoreFoundation 0x02aab7c6 __CFRunLoopRun + 470 14 CoreFoundation 0x02aab280 CFRunLoopRunSpecific + 208 15 CoreFoundation 0x02aab1a1 CFRunLoopRunInMode + 97 16 WebCore 0x039943c3 _ZL12RunWebThreadPv + 483 17 libSystem.B.dylib 0x98552a19 _pthread_start + 345 18 libSystem.B.dylib 0x9855289e thread_start + 34 ) terminate called after throwing an instance of 'NSException'

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  • UIAlertController handle dismiss upon click outside (IPad)

    - by Tomer Peled
    Previous to iOS8 we used the UIActionSheet for showing alert and now we need to use the UIAlertController. When we used the UIActionSheet we could easily handle situations where the user clicked outside the pop up (which means he want to cancel the operation) by comparing the clickedButtonAtIndex to the cancelButtonIndex - if the user indeed pressed outside the popup we got the cancel button index in this function. How can we handle these situations with the new UIAlertController? I tried to use the "completion" block but it doesn't have any context. Is there an easy way to handle this? (other than "saving" the actions states in some general variable).

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  • Add objects in relationship not work using MagicalRecord saveWithBlock

    - by yong ho
    The code to perform a save block: [MagicalRecord saveWithBlock:^(NSManagedObjectContext *localContext) { for (NSDictionary *stockDict in objects) { NSString *name = stockDict[@"name"]; Stock *stock = [Stock MR_createInContext:localContext]; stock.name = name; NSArray *categories = stockDict[@"categories"]; if ([categories count] > 0) { for (NSDictionary *categoryObject in categories) { NSString *categoryId = categoryObject[@"_id"]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"categoryId == %@", categoryId]; NSArray *matches = [StockCategory MR_findAllWithPredicate:predicate inContext:localContext]; NSLog(@"%@", matches); if ([matches count] > 0) { StockCategory *cat = [matches objectAtIndex:0]; [stock addCategoriesObject:cat]; } } } } } completion:^(BOOL success, NSError *error) { }]; The Stock Model: @class StockCategory; @interface Stock : NSManagedObject @property (nonatomic, retain) NSString * name; @property (nonatomic, retain) NSSet *categories; @end @interface Stock (CoreDataGeneratedAccessors) - (void)addCategoriesObject:(StockCategory *)value; - (void)removeCategoriesObject:(StockCategory *)value; - (void)addCategories:(NSSet *)values; - (void)removeCategories:(NSSet *)values; @end The json look like this: [ { "name": "iPad mini ", "categories": [ { "name": "iPad", "_id": "538c655fae9b3e1502fc5c9e", "__v": 0, "createdDate": "2014-06-02T11:51:59.433Z" } ], }, { "name": "iPad Air ", "categories": [ { "name": "iPad", "_id": "538c655fae9b3e1502fc5c9e", "__v": 0, "createdDate": "2014-06-02T11:51:59.433Z" } ], } ] Open the core data pro, You can see only stock with the name of "iPad air" has it's categories saved. I just can't figure out why. You can see in the saveWithBlock part, I first find in the context for the same _id as in json, and then add the category object in the relationship. It's working, but not all of them. Why is that?

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  • Send custom headers with UIWebView loadRequest

    - by Thomas Clayson
    I want to be able to send some extra headers with my UIWebView loadRequest method. I have tried: NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.reliply.org/tools/requestheaders.php"]]; [req addValue:@"hello" forHTTPHeaderField:@"aHeader"]; [self.theWebView loadRequest:req]; I have also tried subclassing the UIWebView and intercepting the - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType method. In that method I had a block of code which looked like this: NSMutableURLRequest *newRequest = [request mutableCopy]; for(NSString *key in [customHeaders allKeys]) { [newRequest setValue:[customHeaders valueForKey:key] forHTTPHeaderField:key]; } [self loadRequest:newRequest]; But for some unknown reason it was causing the web view to not load anything (blank frame) and the error message NSURLErrorCancelled (-999) comes up (all known fixes don't fix it for me). So I am at a loss as to what to do. How can I send a custom header along with a UIWebView request? Many thanks!

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  • iPhone :Can we add more than One application in a Single application

    - by iPhone Fun
    Hi all, I do have an Idea to integrate with my application. I want to create multiple application within a single one application. Like and application containing Weather application as well as image processing application + camera based application. I want to know Is this thing possible with iphone application? Please suggest me is this possible with iPhone app development and is it allowed by apple or not. thanks for your suggestion in advance.

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  • UIPickerview filling the screen

    - by Fischer
    I want an UIPickerView that fills all the screen. This is the code i have ... pickerView1 = [[UIPickerView alloc] init]; [pickerView1 setDelegate: self]; [pickerView1 setFrame: CGRectMake(0,0, 480, 320)]; [self.view addSubview: pickerView1]; This just fills the width, not the height, and I get this message in the output: " invalid height value 320.0 pinned to 216.0 " Why ? How can i adjust the height of the picker ???

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  • How to fire the action of a uibarbuttonitem programatically?

    - by Aruna Herath
    I have created an uibarbuttonitem dynamically and it works properly. I want to fire that uibarbutton item action(click) programatically for unit testing. Even though the code work properly when I log the action of the bar button item in the application code (not on testing code) it gives null. The code I have used is given below. NSLog(@"%@",NSStringFromSelector(barButton.action)); In the testing code I have created a bar button called logout and assign barbutton to that.To click the bar button item programatically I followed the following code. [logout.target performSelector:logout.action]; But it didn't work . I logged the action of logout button and it also gives null. NSLog(@"%@",logout.action); I want to know how to programatically click a uibarbutton item which created dynamically .

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  • AVFoundation buffer comparison to a saved image

    - by user577552
    Hi, I am a long time reader, first time poster on StackOverflow, and must say it has been a great source of knowledge for me. I am trying to get to know the AVFoundation framework. What I want to do is save what the camera sees and then detect when something changes. Here is the part where I save the image to a UIImage : if (shouldSetBackgroundImage) { CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); // Create a bitmap graphics context with the sample buffer data CGContextRef context = CGBitmapContextCreate(rowBase, bufferWidth, bufferHeight, 8, bytesPerRow, colorSpace, kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst); // Create a Quartz image from the pixel data in the bitmap graphics context CGImageRef quartzImage = CGBitmapContextCreateImage(context); // Free up the context and color space CGContextRelease(context); CGColorSpaceRelease(colorSpace); // Create an image object from the Quartz image UIImage * image = [UIImage imageWithCGImage:quartzImage]; [self setBackgroundImage:image]; NSLog(@"reference image actually set"); // Release the Quartz image CGImageRelease(quartzImage); //Signal that the image has been saved shouldSetBackgroundImage = NO; } and here is the part where I check if there is any change in the image seen by the camera : else { CGImageRef cgImage = [backgroundImage CGImage]; CGDataProviderRef provider = CGImageGetDataProvider(cgImage); CFDataRef bitmapData = CGDataProviderCopyData(provider); char* data = CFDataGetBytePtr(bitmapData); if (data != NULL) { int64_t numDiffer = 0, pixelCount = 0; NSMutableArray * pointsMutable = [NSMutableArray array]; for( int row = 0; row < bufferHeight; row += 8 ) { for( int column = 0; column < bufferWidth; column += 8 ) { //we get one pixel from each source (buffer and saved image) unsigned char *pixel = rowBase + (row * bytesPerRow) + (column * BYTES_PER_PIXEL); unsigned char *referencePixel = data + (row * bytesPerRow) + (column * BYTES_PER_PIXEL); pixelCount++; if ( !match(pixel, referencePixel, matchThreshold) ) { numDiffer++; [pointsMutable addObject:[NSValue valueWithCGPoint:CGPointMake(SCREEN_WIDTH - (column/ (float) bufferHeight)* SCREEN_WIDTH - 4.0, (row/ (float) bufferWidth)* SCREEN_HEIGHT- 4.0)]]; } } } numberOfPixelsThatDiffer = numDiffer; points = [pointsMutable copy]; } For some reason, this doesn't work, meaning that the iPhone detects almost everything as being different from the saved image, even though I set a very low threshold for detection in the match function... Do you have any idea of what I am doing wrong?

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  • Dynamically sized UIWebView in a UITableViewCell with auto layout - constraint violation

    - by Orion Edwards
    I've got a UITableViewCell which contains a UIWebView. The table view cell adjusts it's height depending on the web view contents. I've got it all working fine, however when the view loads, I get a constraint violation exception in the debugger (the app continues running and functionally works fine, but I'd like to resolve this exception if possible). How I've got it set up: The TableView sets the cell height like this: -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { if(indexPath.section == 0) { [_topCell layoutIfNeeded]; CGFloat finalHeight = [_topCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height; return finalHeight + 1; } The cell constraints are as follows: Arbitrary 7px offset from the cell's contentView (top) to the webView Web view has arbitrary fixed height constraint of 62px (will expand later once content loads) Arbitrary 8px offset from the webView to the cell's contentView (bottom) in my viewDidLoad, I tell the webView to go and load a URL, and in the webViewDidFinishLoad, I update the web view height constraint, like this -(void)webViewDidFinishLoad:(UIWebView *)webView { CGSize fittingSize = [webView sizeThatFits:CGSizeZero]; // fittingSize is approx 500 [self.tableView beginUpdates]; // Exceptions happen on the following line setting the constant _topCell.webViewHeightConstraint.constant = fittingSize.height; [_topCell layoutSubviews]; [self.tableView endUpdates]; } The exception looks like this: Unable to simultaneously satisfy constraints. Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) ( "<NSLayoutConstraint:0x10964b250 V:[webView(62)] (Names: webView:0x109664a00 )>", "<NSLayoutConstraint:0x109243d30 V:|-(7)-[webView] (Names: webView:0x109664a00, cellContent:0x1092436f0, '|':cellContent:0x1092436f0 )>", "<NSLayoutConstraint:0x109243f80 V:[webView]-(8)-| (Names: cellContent:0x1092436f0, webView:0x109664a00, '|':cellContent:0x1092436f0 )>", "<NSAutoresizingMaskLayoutConstraint:0x10967c210 h=--& v=--& V:[cellContent(78)] (Names: cellContent:0x1092436f0 )>" ) Will attempt to recover by breaking constraint <NSLayoutConstraint:0x10964b250 V:[webView(62)] (Names: webView:0x109664a00 )> This seems a bit weird. It's implied that the constraint which sets the height of the web view is going to be broken, however the web view does get it's height correctly set, and the tableview renders perfectly well. From my guesses, it looks like the newly increased web view height constraint (it's about 500px after the web view loads) is going to conflict with the <NSAutoresizingMaskLayoutConstraint:0x10967c210 h=--& v=--& V:[cellContent(78)] setting the cell height to 78 (put there by interface builder). This makes sense, however I don't want that cell content to have a fixed height of 78px, I want it to increase it's height, and functionally, it actually does this, just with these exceptions. I've tried setting _topCell.contentView.translatesAutoresizingMaskIntoConstraints = NO; to attempt to remove the NSAutoresizingMaskLayoutConstraint - this stops the exceptions, but then all the other layout is screwed up and the web view is about 10px high in the middle of the table view for no reason. I've also tried setting _topCell.contentView.autoresizingMask |= UIViewAutoresizingFlexibleHeight; in the viewDidLoad to hopefully affect the contentView 78px height constraint, but this has no effect Any help would be much appreciated

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