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  • When am I supposed to use UITableViewCellSeparatorStyleSingleLineEtched?

    - by tewha
    I see a description of what UITableViewCellSeparatorStyleSingleLineEtched looks like in Apple's Class Reference, and can see it by running the application. But I can't find any mention of when it's appropriate to use UITableViewCellSeparatorStyleSingleLineEtched instead of UITableViewCellSeparatorStyleSingleLine. In other words, what does this etched line mean to the user? Can anyone explain?

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  • Can I use the whatthetrend.com API to get daily and weekly twitter trends?

    - by Charles S.
    The twitter API allows me to receive daily trends and weekly trends (in addition to current trends, of course) as either JSON or XML. Is there an equivalent with the whatthetrend.com API? I don't see a method/parameter at first glance but I wanted to see if anyone out there knew a way... http://api.whatthetrend.com/api There's a method to lookup trend definition by keyword so I guess I could use that based off the Twitter API but I'd rather just load all the data at once rather than have to remotely access the API every time I want to look up a definition. Thanks

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  • problem in adding data to an array in Objective-C!!!

    - by anurag
    I am grappling with adding an NSData object to a NSMutable array. The code is executing fine but it is not adding the objects in the array.The code is as follows: NSData * imageData = UIImageJPEGRepresentation(img, 1.0); int i=0; do{ if([[tempArray objectAtIndex:i] isEqual:imageData]) { [tempArray removeObjectAtIndex:i]; } else { [tempArray addObject:imageData]; //NSLog(@"ANURAG %@",[tempArray objectAtIndex:0]); } }while(i<[tempArray count]) ; The NSLog statement shows the object added is null however the value of imageData is not null. I have defined the tempArray as a static memeber of the class in which this code is written. Is it because of the size of the data object as it is the data of an image????

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  • How to update the user profile through tokenid when a particular user logs in using his username and password

    - by Rani
    i have an application in which when the user enters his username and password in the login form , his username and password are submitted to the server database for validation and if he is a valid user a tokenid is generated for him through JSON response and he is allowed to log in.this is the JSON response that i get in the console when a valid user log in through the log in form : {"TokenID":"kaenn43otO","isError":false,"ErrorMessage":"","Result":[{"UserId":"164","FirstName":"Indu","LastName":"nair","Email":"[email protected]","ProfileImage":null,"ThumbnailImage":null,"DeviceInfoId":"22"}],"ErrorCode":900} 2011-06-24 11:56:57.639 Journey[5526:207] this is token id:kaenn43otO so when the same user wants to update his profile by clicking on the update tab using the tokenid So that if he want he can his firstname,lastname,password,email.etc.i i have done the following code to update the user profile using tokenid but it does not work.i get tokenid when the user log in and this tokenid i have to pass to other class: this is my code to update user profile: -(void)sendRequest { //this is the class in which i get the tokenid and i am passing it to this class apicontroller *apitest = [[apicontroller alloc]init]; NSString *tokentest = apitest.tokenapi; NSString *post = [NSString stringWithFormat:@"Token=%@&firstname=%@&lastname=%@&Username=%@&Password=%@&Email=%@",tokentest,txtfirstName.text,txtlast.text,txtUserName.text,txtPassword.text,txtEmail.text]; NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]]; NSLog(@"%@",postLength); NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:[NSURL URLWithString:@"http://192.168.0.1:96/JourneyMapperAPI?RequestType=Register&Command=SET"]]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setHTTPBody:postData]; NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; if (theConnection) { webData = [[NSMutableData data] retain]; NSLog(@"%@",webData); [theConnection start]; } else { } } -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [webData setLength: 0]; } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [webData appendData:data]; } -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [connection release]; [webData release]; } -(void)connectionDidFinishLoading:(NSURLConnection *)connection { NSString *loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding]; NSLog(@"%@",loginStatus); [loginStatus release]; [connection release]; [webData release]; } -(IBAction)click:(id)sender { [self sendRequest]; } this is my apicontroller.m file in which i am creating login form so that user login and in this page tokenid is generated -(void)sendRequest { UIDevice *device = [UIDevice currentDevice]; NSString *udid = [device uniqueIdentifier]; //NSString *sysname = [device systemName]; NSString *sysver = [device systemVersion]; NSString *model = [device model]; NSLog(@"idis:%@",[device uniqueIdentifier]); NSLog(@"system nameis :%@",[device systemName]); NSLog(@"System version is:%@",[device systemVersion]); NSLog(@"System model is:%@",[device model]); NSLog(@"device orientation is:%d",[device orientation]); NSString *post = [NSString stringWithFormat:@"Loginkey=%@&Password=%@&DeviceCode=%@&Firmware=%@&IMEI=%@",txtUserName.text,txtPassword.text,model,sysver,udid]; NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]]; NSLog(@"%@",postLength); NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:[NSURL URLWithString:@"http://192.168.0.1:96/JourneyMapperAPI?RequestType=Login"]]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setHTTPBody:postData]; NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; if (theConnection) { webData = [[NSMutableData data] retain]; NSLog(@"%@",webData); } else { } } //to select username and password from database. -(void)check { //app.journeyList = [[NSMutableArray alloc]init]; [self createEditableCopyOfDatabaseIfNeeded]; NSString *filePath = [self getWritableDBPath]; sqlite3 *database; if(sqlite3_open([filePath UTF8String], &database) == SQLITE_OK) { const char *sqlStatement = "SELECT Username,Password FROM UserInformation where Username=? and Password=?"; sqlite3_stmt *compiledStatement; if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) { sqlite3_bind_text(compiledStatement, 1, [txtUserName.text UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement, 2, [txtPassword.text UTF8String], -1, SQLITE_TRANSIENT); //NSString *loginname= [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]; // NSString *loginPassword = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; } if(sqlite3_step(compiledStatement) != SQLITE_ROW ) { NSLog( @"Save Error: %s", sqlite3_errmsg(database) ); UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"UIAlertView" message:@"User is not valid" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; alert = nil; } else { isUserValid = YES; if (isUserValid) { UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"UIAlertView" message:@"Valid User" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; } } sqlite3_finalize(compiledStatement); } sqlite3_close(database); } -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [webData setLength: 0]; } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [webData appendData:data]; } -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [connection release]; [webData release]; } -(void)connectionDidFinishLoading:(NSURLConnection *)connection { NSString *loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding]; NSLog(@"%@",loginStatus); //this is to perfrom insert opertion on the userinformation table NSString *json_string = [[NSString alloc] initWithData:webData encoding:NSUTF8StringEncoding]; NSDictionary *result = [json_string JSONValue]; //here i am storing the tokenid tokenapi = [result objectForKey:@"TokenID"]; NSLog(@"this is token id:%@",tokenapi); // BOOL errortest = [[result objectForKey:@"isError"] boolValue]; if(errortest == FALSE) { values = [result objectForKey:@"Result"]; NSLog(@"Valid User"); } else { NSLog(@"Invalid User"); } NSMutableArray *results = [[NSMutableArray alloc] init]; for (int index = 0; index<[values count]; index++) { NSMutableDictionary * value = [values objectAtIndex:index]; Result * result = [[Result alloc] init]; //through this i get the userid result.UserID = [value objectForKey:@"UserId"]; result.FirstName = [value objectForKey:@"FirstName"]; result.Username =[value objectForKey:@"Username"]; result.Email =[value objectForKey:@"Email"]; result.ProfileImage =[value objectForKey:@"ProfileImage"]; result.ThumbnailImage =[value objectForKey:@"ThumbnailImage"]; result.DeviceInfoId =[value objectForKey:@"DeviceInfoId"]; NSLog(@"%@",result.UserID); [results addObject:result]; [result release]; } for (int index = 0; index<[results count]; index++) { Result * result = [results objectAtIndex:index]; //save the object variables to database here [self createEditableCopyOfDatabaseIfNeeded]; NSString *filePath = [self getWritableDBPath]; sqlite3 *database; if(sqlite3_open([filePath UTF8String], &database) == SQLITE_OK) { const char *sqlStatement = "insert into UserInformation(UserID,DeviceId,Username,Password,FirstName,Email) VALUES (?,?,?,?,?,?)"; sqlite3_stmt *compiledStatement; if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) { //sqlite3_bind_text( compiledStatement, 1, [journeyid UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text( compiledStatement, 1, [result.UserID UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement, 2, [result.DeviceInfoId UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement, 3, [txtUserName.text UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text(compiledStatement, 4, [txtPassword.text UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text (compiledStatement, 5, [result.FirstName UTF8String],-1,SQLITE_TRANSIENT); sqlite3_bind_text (compiledStatement, 6, [result.Email UTF8String],-1,SQLITE_TRANSIENT); } if(sqlite3_step(compiledStatement) != SQLITE_DONE ) { NSLog( @"Save Error: %s", sqlite3_errmsg(database) ); } else { UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"UIAlertView" message:@"Record added" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; alert = nil; } sqlite3_finalize(compiledStatement); } sqlite3_close(database); } [loginStatus release]; [connection release]; [webData release]; } -(IBAction)click:(id)sender { [self sendRequest]; //this is to select username and password from database. [self check]; } for a particular user who logs in only his profile must be update by using tokenid and userid.Please help me in solving this problem.Thanks

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  • How can I change the animation style of a modal UIViewController?

    - by MrDatabase
    I'm currently displaying a UIViewController like this: [[self navigationController] presentModalViewController:modalViewController animated:YES]; and hiding it like this: [self.navigationController dismissModalViewControllerAnimated:YES]; The animation is "slide up from the bottom"... then slide back down. How can I change the animation style? Can I made it fade in/out? Cheers!

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  • Cocoa-Created PDF Not Rendering Correctly

    - by Matthew Roberts
    I've created a PDF on the iPad, but the problem is when you have a line of text greater than 1 line, the content just goes off the page. This is my code: void CreatePDFFile (CGRect pageRect, const char *filename) { CGContextRef pdfContext; CFStringRef path; CFURLRef url; CFMutableDictionaryRef myDictionary = NULL; path = CFStringCreateWithCString (NULL, filename, kCFStringEncodingUTF8); url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0); CFRelease (path); myDictionary = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); NSString *foos = @"Title"; const char *text = [foos UTF8String]; CFDictionarySetValue(myDictionary, kCGPDFContextTitle, CFSTR(text)); CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("Author")); pdfContext = CGPDFContextCreateWithURL (url, &pageRect, myDictionary); CFRelease(myDictionary); CFRelease(url); CGContextBeginPage (pdfContext, &pageRect); CGContextSelectFont (pdfContext, "Helvetica", 12, kCGEncodingMacRoman); CGContextSetTextDrawingMode (pdfContext, kCGTextFill); CGContextSetRGBFillColor (pdfContext, 0, 0, 0, 1); NSString *body = @"text goes here"; const char *text = [body UTF8String]; CGContextShowTextAtPoint (pdfContext, 30, 750, text, strlen(text)); CGContextEndPage (pdfContext); CGContextRelease (pdfContext);} Now the issue lies within me writing the text to the page, but the problem is that I can't seem to specify a multi-line "text view".

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  • NSManagedObject - NSSet gets removed ??

    - by aryaxt
    I have an nsmanagedObject this NSManagedObject contains an NSSet. the data for NSSet get's lost when i call release on an NSManagedObject with retain count of 2. Wouldn't retaining an NSManagedObject also retain all it's properties?? - (id)initViewWithManagedObject :(NSManagedObject)obj { if (self = [super init]) { self.managedObject = obj; } } - (void)dealloc { [self.managedObject release]; //Here is when the nsset data gets removed [super dealloc]; } Below describes how the property was created @interface MyManagedObject :NSManagedObject @property (nonatomic, retain) NSSet *mySet; @end @implementation MyManagedObject @dynamic mySet; @end

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  • How to prevent a modal UIImagePickerController from rotating?

    - by coneybeare
    I have an app that fully support rotation. I am modally adding a UIImagePickerController for which there is no support for UIInterfaceOrientationLandscape and I cannot get the controller to stay in portrait. In other words, I need to disable rotation for the UIImagePickerController so it stays in portrait, without removing rotation for the rest of my app. this seems basic, but I can't seem to locate it. How can I prevent this rotation? UPDATE As suggested, I tried subclassing with the following code: @interface UAImagePickerController : UIImagePickerController { } @end @implementation UAImagePickerController - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation { return UIDeviceOrientationIsPortrait(toInterfaceOrientation); } @end The line is not being hit at all with a breakpoint… i think there must be something funky about the UIImagePickerView

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  • UITableView Header Selection

    - by Reonarudo
    Hello, Can anyone explain me how can I detect a selection in a table view Header view like in tableView:didSelectRowAtIndexPath: ? It would be very useful for me. I've defined the header as UITableCellView so I could attach a UISwitch as an accessory view, and it worked great but now I can't detect the changes made in the switch. Any suggestions?

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  • Allow swipe-to-delete in one instance of UITableViewDataSource, but not another

    - by synic
    I've got a UITableViewDataSource that I'm using for two different UITableViews. In one of the table views, I want to enable swipe-to-delete, so I've implemented tableView:commitEditingStyle:forRowAtIndexPath, and it works as expected. However, in another table, I want to disable that feature. I've got it working by making two UITableViewDataSource classes, one subclassing the other, and I only implement tableView:commitEditingStyle:forRowAtIndexPath in the subclass. I call them RecipientModel and RecipientModelEditable. I'm wondering if there's a better way.

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  • Limit to area that receives touch events

    - by Typeoneerror
    Is there's a bounding box on an application that receives touch events? I created a few sample round rect buttons and placed them in different places in my view. The ones in the center of the view receive touch events (and show the highlighted blue color) but if I place a button near the edges of the view, only parts of them are clickable in the simulator. Is this because of Apples style guidelines? I placed a button exactly where a UITabNavigationItem would appear and only the bottom half of it is clickable.

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  • NSAlert pops up for 3 times

    - by Marco
    Hello community i have a big problem. i implemented an NSAlert in the viewDidLoad() of my app: UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:alertMessage delegate:self cancelButtonTitle:ok otherButtonTitles:nil]; But the Alert pops up for 3 times, and then i can klick on it. Could it be that the viewDidLoad() starts for 3 times? This is the viewDidLoad in the rootViewController, that manages the views: - (void)viewDidLoad { Kundenkarte *kartenAnsicht = [[Kundenkarte alloc] initWithNibName:@"Kundenkarte" bundle:nil]; kartenAnsicht.rootViewController = self; kartenAnsicht.viewDidLoad; self.map = kartenAnsicht; [self.view addSubview:kartenAnsicht.view]; [kartenAnsicht release]; // [super viewDidLoad]; } kartenAnsicht is the view where the problem is. I hope someone could help me because my ideas are over!

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  • Automatically Loading XIB for UITableViewController

    - by ACBurk
    Ran into something interesting, want to know if I'm doing something wrong or if this is the correct behavior. I have a custom UITableViewController. I ASSUMED (first mistake) that if you initialize as such: [[CustomTableController alloc] init]; it would automatically load from a XIB of the same name, CustomTableController.xib, if it is in the same directory and such. HOWEVER This does not work; doesn't load the XIB. BUT, if I change the parent class of my controller from 'UITableViewController' to 'UIViewController', EVERYHTING WORKS FINE! Calling: [[CustomTableController alloc] init]; loads the controller and view from my xib. Am I doing something wrong? Is this a bug? Expected behavior?

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  • Im Stumped, Why is UIImage\Texture2d memory not being freed

    - by howsyourface
    I've been looking everywhere trying to find a solution to this problem. Nothing seems to help. I've set up this basic test to try to find the cause of why my memory wasn't being freed up: if (texture != nil) { [texture release]; texture = nil; } else { UIImage* ui = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"image" ofType:@"png"]]; texture = [[Texture2D alloc] initWithImage:ui]; } Now i would place this in the touches began and test by monitoring the memory usage using intstruments at the start (normally 11.5 - 12mb) after the first touch, with no object existing the texture is created and memory jumps to 13.5 - 14 However, after the second touch the memory does decrease, but only to around 12.5 - 13. There is a noticeable chunk of memory still occupied. I tested this on a much larger scale, loading 10 of these large textures at a time The memory jumps to over 30 mb and remains there, but on the second touch after releasing the textures it only falls to around 22mb. I tried the test another time loading the images in with [uiimage imagenamed:] but because of the caching this method performs it just means that the full 30mb remains in memory.

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  • How do you do a foursquare style uitableview refresh?

    - by nickthedude
    If you haven't seen their implementation Of the refresh of a tableview it is extremely slick. I was surprised to see no search results asking for this to be explained so I figured ask it myself. If you haven't seen it, it basically adds a subviews to the uitableview above the header to the blank part of the screen when you pull a uitableview view down farther than it has data to display. Sorry if that doesn't make sense but just download the app and you will immediately want to do it too. Just wondering how they did it?

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  • Animating multiple UIViews at once using CoreAnimation

    - by Thomas
    Hi, I'm using a UIImageView as a background-image and placed multiple UIButtons on it. Now I want to move the UIImageView (with all the buttons on it) out of sight with a smooth animation. I couldn't find a container or grouping element in IB, so is there a way to move all the Views at once? Thank you in advance and sorry for my english!

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  • Cocoa Touch - Display an Activity Indicator while loading a UITabBar View

    - by Aurum Aquila
    I have a UITabBar Application with two views that load large amounts of data from the web in their "viewWillAppear" methods. I want to show a progress bar or an activity indicator while this data is being retrieved, to make sure the user knows the app isn't frozen. I am aware that this has been asked before. I simply need some clarification on what seems to be a rather good solution. I have implimented the code in the example. The question's original asker later solved their problem, by putting the retrieval of data into another "thread". I understand the concept of threads, but I do not know how I would impliment this. With research, I have found that I need to move all of my heavy data retrieval into a background thread, as all of the UI updating occurs in the main thread. If one would be so kind as to provide an example for me, I would be very appreciative. I can provide parts of my existing code as necessary.

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  • UIView animation doesn't work first time

    - by BobC
    Hello everybody, I have a seachButton in the navigation bar which upon hitting calls following method: - (IBAction)search:(id)sender { if (nil == searchViewController) searchViewController = [[SearchViewController alloc] initWithNibName:@"SearchViewController" bundle:nil]; searchViewController.view.backgroundColor = [UIColor clearColor]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0]; [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:searchViewController.view cache:NO]; [self.view addSubview:searchViewController.view]; [UIView commitAnimations]; } It should load SearchViewController.xib which contains a view with UISearchBar and two buttons. When I call the search method for the first time, the view appears very quickly with some weird animation, when I call it again, the animation is alright. Does anyone have a clue what could be wrong?

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  • Can't Reorder a UITableViewCell into _some_ empty sections of a UITableView

    - by Jeremy Lightsmith
    If I have a UITableView in edit mode, w/ reordering turned on, it seems I can't move some (but not all) cells into some (but not all) empty sections. For example, if I have this layout : Section 1 apple banana Section 2 doberman Section 3 Section 4 Then I can move 'doberman' into any slot in section 1 (except after 'banana'), but I can't move it into section 3 or 4 at all. On the other hand, I can move 'apple' & 'banana' into section section 2 (except after 'doberman'), and I CAN move it into section 3, but NOT into section 4. What gives? this seems like buggy behavior. How do people work around it? Is apple aware of this bug?

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