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  • Scroll immediately to row in table before view shows

    - by cannyboy
    A view with a table gets pushed onto the screen and I want it to scroll to a certain row in the table before the screen actually displays. I use this code within the final viewcontroller. NSIndexPath *scrollToPath = [NSIndexPath indexPathForRow:5 inSection:0]; [theTable scrollToRowAtIndexPath:scrollToPath atScrollPosition:UITableViewScrollPositionTop animated:NO]; When I put it in viewDiDAppear method, then it briefly flashes from the intial position of the table (at the top) to the row I want. I don't want it to show the initial position. If I put it in viewDidLoad or viewWillAppear then it crashes with a NSRangeException, presumably because the table isn't set up yet. How would I get it to scroll without showing the initial position?

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  • Can I add a custom method to Core Data-generated classes?

    - by Andy
    I've got a couple of Core Data-generated class files that I'd like to add custom methods to. I don't need to add any instance variables. How can I do this? I tried adding a category of methods: // ContactMethods.h (my category on Core Data-generated "Contact" class) #import "Contact.h" @interface Contact (ContactMethods) -(NSString*)displayName; @end ... // ContactMethods.m #import "ContactMethods.h" @implementation Contact (ContactMethods) -(NSString*)displayName { return @"Some Name"; // this is test code } @end This doesn't work, though. I get a compiler message that "-NSManagedObject may not respond to 'displayName' " and sure enough, when I run the app, I don't get "Some Name" where I should be seeing it.

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  • Display TableViews corresponding to segmentedControl in a single tableview without pushing a new view

    - by user1727927
    I have a tableViewController where I have used the Interface Builder to insert a Segmented Controller having two segments. Since by default, first segment is always selected, I am not facing any problem in displaying the tableview corresponding to first segment. However, when I click on the second segment, I want to display another tableView. Here goes the problem. I am calling newTableViewController class on clicking the second segment. Hence, this view is getting pushed instead. Please suggest me a method to have these two tableViews in the main tableView upon clicking the segments. I have used switch case for switching between the segments. Here's the relevant part of the code: This method is in the FirstTableViewController since first segment is by default selected. -(IBAction) segmentedControlChanged { switch(segmentedControl.selectedSegmnentIndex) { case 0: //default first index selected. [tableView setHidden:NO]; break; case 1: NewViewController *controller=[[NewViewController alloc] initWithNibName:@"NewViewController" bundle:nil]; self.navigationController pushViewController:controller animated:YES]; [controller release]; break; default: break; } }

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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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  • word after the space NSlog

    - by DD007
    I am new bie to xcode may be question is silly but I am lagging with my home work. In a file I want to read a specific character after the string. I want to read all the character after the space. ex: asasasasasas wewewewewewe qwqwqwqwqwqw xyz_ 22 aaaaaaaaaaa bbbbbbbbbbb ccccccccccccccc ddddddddddddd fgfgfgfgfgfgfg ererererererer abc_ 12 bbbbbbbbbb dddddddd jkjkjkjkjkjkjk lalallalalalal everything is fine .. but i want to print after "xyz_ 22" as aaaaaaa then bbbb ccc

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  • Is there an autorelease pool in class methods?

    - by mystify
    I have an class method which generates an UIView, like this: + (UIImage*)imageWithFileName:(NSString*)imgFile { UIImage *img = nil; NSBundle *appBundle = [NSBundle mainBundle]; NSString *resourcePath = [appBundle pathForResource:imgFile ofType:nil]; if (resourcePath != nil) { NSURL *imageURL = [NSURL fileURLWithPath:resourcePath]; NSData *data = [[NSData alloc] initWithContentsOfURL:imageURL]; img = [UIImage imageWithData:data]; // should be autoreleased!! [data release]; } return img; } However, when I use this, the image data is NEVER freed. There is definitely a memory bug with this, although I didn't break any memory management rule I am aware of. My guess is that because this is a class method which gets called from instance methods, There is no active autorelease pool in place or it's one that only gets drained when I quit the app. Could that be right?

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  • AccessoryDisclosureIndicator and AccessoryCheckmark on the left side

    - by embedded
    Hi I'm adding support for right-to-left languages for the UITableView. now I need to move the AccessoryDisclosureIndicator and AccessoryCheckmark from the right corner to the left. I'm taking the UIImageView path and Now I'm looking for 2 png icons: one for the AccessoryDisclosureIndicator arrow to the left and the second for the AccessoryCheckmark. Does anyone know where I can get those 2 icons? Is it possible when the user clicks on some cell to switch to the other view to the left and not to the right? Thanks

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  • AND NSPedicate on Core Data relationships

    - by jesse001
    I'm having trouble compounding NSPredicate with AND, although using OR works fine. Imagine 2 entities, Doctor and Patient. Doctors can have many patients and patients many doctors. I want to find doctors that, say, have both person1 and person2 as patients. I expected this to work but it returns none. NSPredicate *predicate = [NSPredicate predicateWithFormat:@"ANY patients matches 'person1&&person2'"]; If I change && to ||, I get all doctors that have person1 or person2 as I'd expect. Thanks in advance for your help.

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  • Set the thumbImage and watch the slider-bar disappear?

    - by Roberta
    [sld1 setThumbImage:[UIImage imageNamed:@"Blue.png"] forState:UIControlStateHighlighted]; [sld1 setThumbImage:[UIImage imageNamed:@"Blue.png"] forState:UIControlStateNormal ]; Would that cause the slider-bar image to disappear? Mine are all gone. (The thumb-image displays just fine.) Apple's docs make it sounds like I can use any ONE of above 2 lines of code. (But I guess I really need both.) And I can't find anything about "you must always do all 4": Set the normal-state image. Set the highlighted-state image. Set the setMinimumTrackImage. Set the setMaximumTrackImage.

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  • Converting a CGRect of a object in a subview in UITableViewCell in UITable to CGRect with respect to

    - by user362956
    Hey, I want to converte a CGRect "aRect" of a object in a subview in UITableViewCell in UITable to CGRect with respect to self.view. The problem is that aRect is with respect to the subview in the table cell. But i want to make it so that it is with respect to self.view What i tried is this rect = [self.view convertRect:aRect.frame toView:cellView]; but it doesn't work. So how to convert it?

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  • How i pass my view to nib at run time(Dynamically) in viewController class?

    - by Rajendra Bhole
    Hi, I want to create viewController class programmatically in which the view of nib file of viewController is not fixed. I have a UntitledViewController class that contains 4 UIButtons: -(IBAction)buttonPressed:(id)sender{ if((UIButton *)sender == button1){ tagNumber = button1.tag; NewViewController *newVC = [[NewViewController alloc] init]; //newVC.tagN [self.navigationController pushViewController:newVC animated:YES]; NSLog(@"Button Tag Number:- %i", tagNumber); } if((UIButton *) sender == button2){ tagNumber = button2.tag; NewViewController *newVC = [[NewViewController alloc] init]; [self.navigationController pushViewController:newVC animated:YES]; } if((UIButton *) sender == button3){ tagNumber = button3.tag; NewViewController *newVC = [[NewViewController alloc] init]; [self.navigationController pushViewController:newVC animated:YES]; } if((UIButton *) sender == button4){ int x = tagNumber; tagNumber = button4.tag; NewViewController *newVC = [[NewViewController alloc] init]; newVC.untitledVC = self; [self.navigationController pushViewController:newVC animated:YES]; } } When I will click any one of the UIButtons, I want to create a new NewViewController class with button tag property but without fixed nib file. In NewViewController's loadView event I want to fix the view of the nib of NewViewController class using UIButton's tag property (In NewViewController.xib I'm creating 4 UIViews named view1, view2, view3 and view4). -(void)loadView{ [super loadView]; CGRect frame = CGRectMake(0, 0, 320, 480); UIView *newView = [[UIView alloc] initWithFrame:frame]; newView.tag = untitledVC.tagNumber; self.view1 = newView; } Now I want that when I click button1 the NewViewController will be generated with view1 and when I click button2 the NewViewController will be generated with view2 and so on with different implementation. Thanks.

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  • Time in "Upload Received"

    - by rpeck1682
    I uploaded an app to itunes connect yesterday afternoon. It has been in the "Upload Received" stage ever since then. I uploaded a different app today, it was in that stage for only five minutes. This is the first time I've submitted since the new, more detailed status updates were present. I'm just wondering if the app sitting there in that state for so long seems like something to be concerned about. I'm guessing by staying in that state that it isn't being put on the review queue. Anyways, has anyone else had a similar experience?

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  • Reload a UITable on the fly when editing a UITextField inside one of the cells

    - by Saze
    I have a UITable containing some customs UITableCells. Those cells contain a few UILabels and a UITextField. The datasource of the table comes from a main controller's property. (This controller is also the delegate and the dataSource for the table). Here's a simplified screenshot of the UI: Now, I need to update "on the fly" the content of all the UILabels when the user edits one of the UITextFields. To do so, at the I am listening to the "Editing Changed" event at the UITextField level. This triggers the following action: - (IBAction) editChangeHandler: (id) sender { MyAppDelegate *delegate = [[UIApplication sharedApplication] delegate]; [[delegate.viewController.myDataSourceArray objectAtIndex:self.rowIndex] setANumber: [theTextField.text intValue]]; [delegate.viewController reloadRows]; } The reloadRows method in the viewController is as such: - (void) reloadRows { NSLog(@"called reloadRows"); //perform some calculations on the data source objects here... [theUITable reloadData]; } My problem here is that whenever the user changes the value in the field, the reloadRows method is successfully called, so is apparently the reloadData but it also causes the keyboard to be dismissed. So in the end, the user can only touch one key when editing the TextField before the keyboard is dismissed and the table reloaded. Does anybody knows a solution to this or have experienced the same issue?

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  • Store image in core data and Retina Display ?

    - by shani
    Hi I have an app that has hundreds of words with 3/4 images for each word. I have 2 versions of each word one for iOS 3 and one for retina display. I wish to save the images as data and connect them to the appropriate word so it will be easy to pull them later. my question is - how do i get the suitable size ? its works great with the @2x wjen you get it from the app file system, but hoe does it supposed to work when i get it from data ? thanks shani

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  • Why I cant be able to change the UITableViewCell detailTextLabel's frame (just the label's position)?

    - by Simon
    Hi.. I am having a table view with default UITableViewCell of style UITableViewCellStyleValue2. I just want to move detailTextLabel few pixels to the right. I know it makes no sense to adjust its width and height :). I am trying to set detailTextLabel's frame with my x and y value. But its not affecting the its frame. I prefer to use default UITableViewCell, in this case, over a customized cell because the default UITableViewCell automatically manages the text alignment and centering of the labels.. How to change UITableViewCell detailTextLabel's frame? Am I allowed to change its frame? Thanks everyone..

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  • Converting byte array to image in xcode?

    - by arizah
    I am getting a byte array(I reckon) in NSMutableArray's object.The NSMutableArray i get is from Xml parsing from a service URL..Now I need to convert that byte array to UIImage ..Gone through google and found to convert to NSData and then UIImage but couldn't understand how..? How can I do it ? My array looks like this : ( { Name = "John"; Image = "/9j/4AAQSkZJRgABAQAAAQABAAD//gA7Q1JFQVRPUjogZ2QtanBlZyB2MS4wICh1c2luZyBJS kcgSlBFRyB2NjIpLCBxdWFsaXR5ID0gODAK/9sAQwAGBAUGBQQGBgUGBwcGCAoQCgoJCQoUDg8MEBcUGBgXF BYWGh0lHxobIxwWFiAsICMmJykqKRkfLTAtKDAlKCko/9sAQwEHBwcKCAoTCgoTKBoWGigoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgo/8AAEQgEKwZAAwEiAAIRAQMRAf/........ //big byte array } ) First of all I need to clear whether it is a byte array ?How can I extract image from this ?

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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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