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  • Optional Navigation Controller

    - by Kevin Sylvestre
    I have an application containing a variety of view controllers linked together in different ways (Welcome Browse Preview OR Browse Preview OR Settings Splash). The first view controller is presented modally using a navigation controller from a main controller, then the next set of view controllers are added using pop and push. This works correctly, but I need to be able to define my 'UINavigationBar' and 'UIToolbar' within interface builder, so they still work as expected if they are presented without using a navigation controller. Is this possible? Currently I get this if I try:

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  • Core Data-Linking one-to-many relationships

    - by Stelmate
    I have a one-to-many relationship where each department has many employees. When I create a new employee object I just link it to the parent department manually by setting the property to the instance of the department I have fetched from my fetch request. However, this seems to be improper because when I try to access the set of employees from the department by simply accessing the .employees property on my department object instance it returns a 0 count. Isn't the fault suppose to fire once I access a property? Am I linking my parent/child objects incorrectly?

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  • Using CCSpriteFrameCache without CCSpriteBatchNode

    - by AwDogsGo2Heaven
    I want to know if there is any benefiting caching a sprite sheet and accessing the sprite by frame without using the CCSpriteBatchNode? In some parts of my game the sprite batch node is useful because there is a lot on the screen, however on another part its not, because there are just a few things, and there are requirements for layers so CCSpriteBatchNode wouldn't be useful. However, for the sake of consistency I would like to use Sprite Sheets for all my sprites, and so was beginning to wonder if I would still receive any benefit from it? (Or worse that it could some how be slower...)

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  • iPad App design decision

    - by Comma
    I would like to develop a reader app for viewing and manipulating proprietary format documents. The documents are 2D. (Might add some cool page flip effects) The interface is similar to that of mobile safari. I'm trying to decide whether to write this in Quartz2D or OpenGL ES. I have no prior experience with either of those. Any suggestions?

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  • Have my UIPickerView having the same behavior than the keyboard.

    - by camilo
    Hi. So I have a UITableView where one of its rows is a UITextView. When the user is writing something to UITextView (using the keyboard) the user can scroll the tableview and select another cell. Everything works. When the user selects another cell, a datePicker appears, and the user can select a given date. I want the user to be able to scroll the tableView the same way like when the keyboard is on the screen. The problem here is that when I scroll with the picker, the table bounces back to the previous position (with some cells hidden by the picker). I assume that this happens because I add the picker to the main window, as a subview... but I'm honestly not sure... Where (and how) should I add my picker so that it "appears" where the keyboard appears? Not sure I was clear... Thanks a lot.

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  • UITableViewCell: Allowing Selective Deletion

    - by Aran Mulholland
    I have a table view and want to allow rearranging of all cells, however there are certain cells that i do not want to be allowed to be deleted. when the UiTableView is put into deletion mode i do not want the red '-' button to appear on the left hand side, and do not want the swipe gesture to bring up the Delete button of these cells but want it to happen for the others. Any ideas?

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  • Download files with NSURL

    - by Ishwar
    I am trying to download a list of files from a ftp server using: NSURL *ftpUrl = [NSURL URLWithString:@"ftp://xxx:[email protected]"]; I HAVE to use FTP, so please do not recommend an alternative. I want to know how to get the list of files from the root directory and also navigate inside folders (of FTP server). P.S: I do not think external library would be required to accomplish such an easy task, but if I must, any recommendations would be appreciated. Thank You :)

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  • plus minus table View cell

    - by user1748387
    I have the following code - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; UIImage * i1 = [UIImage imageNamed: @"inc_01.png"]; UIImage * i2 = [UIImage imageNamed: @"inc_02.png"]; UIImage * i3 = [UIImage imageNamed: @"inc_04.png"]; UIImage * i5 = [UIImage imageNamed: @"inc_05.png"]; UIImage * i6 = [UIImage imageNamed: @"inc_06.png"]; UIImage * i7 = [UIImage imageNamed: @"inchd.png"]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; } if(indexPath.row == 0) { UIImageView * header= [[UIImageView alloc] initWithImage: i1]; cell.backgroundView = header; // Configure the cell… } else if (indexPath.row == 2) { UIImageView *backgroundCellImage=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 280, 11)]; backgroundCellImage.image=[UIImage imageNamed:@"inc_06.png"]; [cell.contentView addSubview:backgroundCellImage]; } else { // Configure the cell… UIImageView *imageView = [[UIImageView alloc] initWithImage: i3]; cell.textLabel.text = @"text"; UIImageView *backgroundCellImage=[[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 57, 46)]; backgroundCellImage.image=[UIImage imageNamed:@"inc_02.png"]; UIImageView *backgroundCellImage2=[[UIImageView alloc] initWithFrame:CGRectMake(223, 0, 57, 46)]; backgroundCellImage2.image=[UIImage imageNamed:@"inc_04.png"]; UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(57, 0, 166, 46)]; label.text = @"wow"; [cell.contentView addSubview:backgroundCellImage]; [cell.contentView addSubview:backgroundCellImage2]; [cell.contentView addSubview:label]; } return cell; } that basically creates a table view and puts an image to the left and right of each cell. I want it so that people can click on the left or right image in each cell, and something different happens based on the cell number. So if they click on the left image for cell in row 1, a function gets call with the row number they clicked on, and an indicator telling me they clicked on the left image and not the right image. How can I do that using objective-c?

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  • How to set the attributes of cell progamatically without using nib file ?

    - by srikanth rongali
    - (void)viewDidLoad { [super viewDidLoad]; // Uncomment the following line to display an Edit button in the navigation bar for this view controller. self.title = @"Library"; self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" style:UIBarButtonItemStyleBordered target:self action:@selector(close:)]; self.tableView.rowHeight = 80; } -(void)close:(id)sender { // } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; UILabel *dateLabel = [[UILabel alloc]init]; dateLabel.frame = CGRectMake(85.0f, 6.0f, 200.0f, 20.0f); dateLabel.tag = tag1; [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator]; cell.contentView.frame = CGRectMake(0.0f, 0.0f, 320.0f, 80.0f); [cell.contentView addSubview:dateLabel]; [dateLabel release]; } // Set up the cell... //[(UILabel *)[cell viewWithTag:tag1] setText:@"Date"]; cell.textLabel.text = @"Date"; return cell; } But the control is not entering into the tableView: method. So I could not see any label in my table. How can I make this ? Thank You

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  • Access problem with NSMutableArray

    - by pbcoder
    Hi, my problem is that I can't access my NSMutableArray in - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {}. I create my NSMutableArray here: nodes = [xmlDoc nodesForXPath:@"/xml/items/item/short_desc" error:nil]; if (nodes != nil && [nodes count] >= 1) { for (int i = 0; i < [nodes count]; i++) { CXMLElement *resultElement = [nodes objectAtIndex:i]; result = [[[[resultElement attributeForName:@"data"] stringValue] copy] autorelease]; [short_desc addObject:result]; } } and I can print out the content of short_desc everywhere with: NSLog([short_desc objectAtIndex:0]); but not in: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { ..... NSString *date = [name objectAtIndex:0]; labelDate.text = date; ..... return cell;} if I use: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { ..... NSString *date = @"text..."; labelDate.text = date; ..... return cell;} it works correctly. ANY SOLUTION FOR THIS PROBLEM???

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  • Prevent custom AccessoryView from showing selection when it's UITableViewCell is selected.

    - by groomsy
    To reproduce this, create a UITableView that contains cells with custom AccessoryViews (such as buttons to perform a specific action where touching the other part of the UITableViewCell should perform a different action). If you touch (select) the UITableView, the AccessoryView shows selection (as thought it was touched) as well. I want to prevent this and only show the AccessoryView's selected state when they actually touch the AccessoryView. Thanks in advance, groomsy

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  • strange situation of UITableView when I want to scroll it

    - by ivanlw
    I'm building an easy app for chatting, each time I type in a sentence, the sentences is added into an array(which used to load the table view in cellForRowAtIndexPath delegate method), then I reload the table view. At last I use the following code to scroll the table view to the bottom if ([self.chatList numberOfRowsInSection:0] != 0) { NSUInteger rowCount = [self.chatArray count]; NSIndexPath* indexPath = [NSIndexPath indexPathForRow:rowCount-1 inSection:0]; [self.chatList scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:YES]; } however, the table view sometimes performs well, sometimes only scrolls to the second to the last line……

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  • Deleted nib still displayed when controller is pushed

    - by yahuie
    I have an application with a UINavcontroller under a tab bar controller. To create the navigation model I want, I push a container UIView object onto the stack to manage additional views(Thanks Frank). When I created the container class, an associated nib file was created along with it. I at first used that nib file, but it turned out it was better not to. So I deleted the nib (and selected 'also move to trash'). The problem is that it still shows up when I push its view controller onto the stack. I have tried emptying the cache in xcode and restarting xcode. What am I missing?

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  • NSInvalidArgumentException – App terminates while i'm trying to copy a captured video to documents f

    - by ChrNis
    I'd like to try the wisdom of the crowds..because i'm frustrated right now. Thanks in advance. So here is my code: - (void)imagePickerController:(UIImagePickerController *)ipc didFinishPickingMediaWithInfo:(NSDictionary *)info{ NSLog(@"info: %@",info); NSString *newFilename = [NSString stringWithFormat:@"%@/%@.mov", [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"], [NSString stringWithFormat:@"%d", (long)[[NSDate date] timeIntervalSince1970]]]; NSLog(@"newFilename: %@",newFilename); NSFileManager *filemgr = [NSFileManager defaultManager]; NSError *err; if ([filemgr copyItemAtPath:[info objectForKey:@"UIImagePickerControllerMediaURL"] toPath:newFilename error:&err] == YES) NSLog (@"Move successful"); else NSLog (@"Move failed"); and this is the log: 2010-05-16 18:19:01.975 erlkoenig[7099:307] info: { UIImagePickerControllerMediaType = "public.movie"; UIImagePickerControllerMediaURL = "file://localhost/private/var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/tmp/-Tmp-/capture-T0x108cb0.tmp.8M81HU/capturedvideo.MOV"; } newFilename: /var/mobile/Applications/BE25F9B5-2D08-4B59-8B62-D04DF7BB7E5B/Documents/1274026741.mov [NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSURL fileSystemRepresentation]: unrecognized selector sent to instance 0x1c1f90

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  • NSDecimalNumber leaks memory if not used with AutoRelease pool?

    - by bioffe
    NSString* str = [[NSString alloc] initWithString:@"0.05"]; NSDecimalNumber* num = [[NSDecimalNumber alloc] initWithString:str]; NSLog(@" %@", num); [str release]; [num release]; leaks memory *** __NSAutoreleaseNoPool(): Object 0x707990 of class NSCFString autoreleased with no pool in place - just leaking Can someone suggest a workaround ?

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  • UIScrollView -> UIView ->UIImageView

    - by RapidM
    Hi everyone, I am trying to create a horizontal UIScrollView with a few images in it. The user should be able to scroll horizontal between all the images. If he holds down the finger the scrolling should stop. I though about making a UIScrollView (320 x 122 px) UIView for the content + really big width UIImageView for the individual images Here is my code: headScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 122)]; [self.view addSubview:headScrollView]; // Dafür einen contentView programmatisch festlegen headContentView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 500, headScrollView.frame.size.height)]; [headContentView setBackgroundColor:[UIColor lightGrayColor]]; [headScrollView addSubview:headContentView]; [headScrollView setContentSize:headContentView.frame.size]; headImageView = [[UIImageView alloc] init]; NSMutableArray *elements = [appDelegate getElements]; for (int i = 0; i < [elements count]; i++) { headImageView.image = [UIImage imageNamed:[[elements objectAtIndex:i] nameOfElement]]; [headContentView addSubview:headImageView]; } But it's not working. There is no image there :-( When I do a NSLOG i get 3 names of the images, so it should work... Any ideas? Thanks!

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  • Best way to save to nsuserdefaults for custom class?

    - by cannyboy
    If I have a custom class Person which has three variables (which are propertized and synthesized): NSString* theName; float* theHeight; int theAge; Person instances are stored in an NSArray 'Group'. There is only one Group. What is the best way of string and loading the Group in NSUserDefaults? (bearing in mind that float and int are not legal for NSUserDefaults)

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