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  • How to expand and collapse parts of NSSplitView programatically?

    - by cocoafan
    Hi, I want to replace RBSplitView with NSSplitView in my existing project. The application is now leopard only and I would like to replace RBSplitView with the new NSSplitView shipped with Leopard. However, I'm missing RBSplitView's handy methods expand and collapse in NSSplitView. How can I expand and collapse parts of NSSplitView programatically?

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  • Can I stop UIImageView Animation at last frame?

    - by Ivan
    Hello, I have an animation using a UIImageView myAnimatedView.animationImages = myImages; myAnimatedView.animationDuration = 1; myAnimatedView.animationRepeatCount = 1; [myAnimatedView startAnimating]; How can I tell to animation to stop at the last frame or to be visible last frame of the series of images? Thank you in advance

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  • How to configure a OCUnit test bundle for a framework?

    - by GuidoMB
    I've been developing a Mac OS X framework and I want to use OCUnit in my XCode 3.2.1 project. I've followed several tutorials on how to configure a OCUnit test bundle. The problem is that when I create a test case that uses a function that is defined in one of the framework's sources, I get a building error telling me that the symbol is not found. I made the test bundle dependent of my project's target as the tutorial said, but that doesn't seem to be problem. First I thought that I could solve this problem by dragging the framework's source files into the compile sources section within the Test bundle target, but then all the symbols referenced from that source file started to show up in the build errors, so that seems to not be a good solution/idea. How can I configure my unit test bundle so it builds properly?

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  • NSNull isEqualToString Issue With JSON Response

    - by IconicDigital
    I am getting the following error -[NSNull isEqualToString:]: unrecognized selector sent to instance 0x3c168090 on this line of code cell.offerTitle.text = [voucherData objectForKey:@"offer_title"]; Could someone help me correct the problem please? Thanks Oliver * Update ** NSlog [voucherData objectForKey:@"offer_title"] and I get the following 2012-12-05 16:50:17.512 app.co.uk - Vouchers and Deals[6350:907] <null> 2012-12-05 16:50:17.514 app.co.uk - Vouchers and Deals[6350:907] -[NSNull isEqualToString:]: unrecognized selector sent to instance 0x3c168090 Checked the JSON and there was a null value, I have done the following to check if null but this isn't working if([voucherData objectForKey:@"offer_title"] == NULL){ cell.offerTitle.text = @"INVALID"; }else{ cell.offerTitle.text = [voucherData objectForKey:@"offer_title"]; }

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  • Get settings through a button action

    - by Russ Knudsen
    I am looking for a way to access user settings (I assume, NSUserDefaults?) through a button action. Let me back up and explain. What I have right now are 2 TextFields a label and a button. The user will type in measurements in the 2 TextFields. When they hit the button the label displays the volume of the measured object in Gallons. That part of it works great. Then I wanted to give the user options to output the volume in Liters instead of gallons. I would also like to give the user options to type in the measurements in Centimeters. So I setup a 'Settings.Bundle' and configured it with 2 'Multi Value' cells (Measurement units and Volumetric Units). Each Multi Value cell has its own list of different units the user can pick from. My main issue is I don't know how to access these settings through the button action. I may be thinking of this wrong, but what I'm looking for is something like; Button Action If settings key = 0 Then do the math in Inches, Display in Gallons If settings key = 1 Then do the math in Centimeters, Display in Gallons If settings key = 2 Then do the math in Inches, Display in Liters If settings key = 3 Then do the math in Centimeters, Display in Liters Etc... Is this possible? Am I thinking of this in the wrong way? What's the best way to do this?

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  • Core Text CTFrameSetter error with size suggestion

    - by JK
    I am trying to use the CTFramesetterSuggestFrameSizeWithConstraints method of CTFrameSetter to calculate the rect for a given attributed string. However, both the width and height are slightly less than needed. I would appreciate any suggestions on what may be causing this or how to correct it please.

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  • Row index of pickerview is not displaying correctly.

    - by iSharreth
    I had used images in pickerview. But the row number is not displaying correctly. Anyone please help. I used the below code: - (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view { NSLog(@"Row : %i",row); return [customPickerArray objectAtIndex:row]; }

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  • How do I create rows with alternating colors for a UITableView on iPhone?

    - by Mat
    Hi all, i would to have alternate 2 colors of rows, like the first black, the second white, the third black, etc, etc... my approach is like a basic exercise of programming to calculate if a number is odd number or not: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; cell = ((MainCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]); if (cell==nil) { NSArray *topLevelObjects=[[NSBundle mainBundle] loadNibNamed:@"MainCell" owner:self options:nil]; for (id currentObject in topLevelObjects){ if ([currentObject isKindOfClass:[UITableViewCell class]]){ if ((indexPath.row % 2)==0) { [cell.contentView setBackgroundColor:[UIColor purpleColor]]; }else{ [cell.contentView setBackgroundColor:[UIColor whiteColor]]; } cell = (MainCell *) currentObject; break; } } }else { AsyncImageView* oldImage = (AsyncImageView*) [cell.contentView viewWithTag:999]; [oldImage removeFromSuperview]; }return cell; The problem is that when i do a rapid scroll, the background of cells become like the last 2 cell black, the first 2 cell white or something like this, but if i scroll slow works fine. I think the problem is the cache of reusableCell. Any ideas? TIA

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  • NSXMLParser with multiple attributes

    - by mitb67
    Hi. I have the following XML (doing an app for iPhone): <Row> <Field name="employee_id_disp">00070431</Field> <Field name="given_name">John</Field> <Field name="family_name">Doe</Field> </Row> ... How can I retrieve values only for one of the attributes, for example value "John" for attribute name="given_name" ? Thanks for answers.

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  • Sub-viewController doesn't get autorotation notifications, bug?

    - by Shizam
    If I have a view (and its controller) and I override the willAnimateRotationToInterfaceOrientation method so I can respond to autorotation events everything works fine and dandy. Now if I create another viewController and add its view to the first viewController's view via: [firstViewController.view addSubview:secondViewController.view] The secondViewController's willAnimateRotationToInterfaceOrientation method isn't called. What gives? Thanks, Sam

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  • What's the proper way to use sqlite at xCode?

    - by Elliot Chen
    Hi, Experts: Can you please give some suggestions on sqlite using at xcode? Within my application, I use a sqlite DB to store all local data. Two methods can be used to retrieve those data during running time. 1, Load all the data into memory at initialization stage. (More memory used, less DB open/close operation needed) 2, Read corresponding records when necessary, free the occupied memory after using. (Good habit for memory using, but much DB open/close operations needs). I prefer to use method 2, but not sure whether too many DB opening/closing operations could affect app's efficiency. Or do you think I can 'upgrade' method 2 by opening DB when app launches and closing DB when app quits? Thanks for your suggestions very much!

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  • does copyWithZone on an NSArray call copyWithZone on its elements too?

    - by malik
    Hi, here's the scenario, I have this array of Person objects. copyWithZone is implemented on Person and works as expected. I have an array of Person objects, however when I create a copy of the array and modify things in original array (change attributes of a Person) it chances the copy as well. So my best guess is that when I call copyWithZone on NSArray, it does not call it on its elements. Please confirm.

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  • Designing the iPhone interface in a nib or in code?

    - by Jacob Relkin
    I've been pondering over this question for a long time already. On the one hand, Interface Builder offers a really easy way to design the interface and wire the elements up with objects in code. On the other hand, in larger projects, Interface Builder becomes a hassle to maintain. Any suggestions would be greatly appreciated.

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  • Sort/Enumerate an NSArray from somewhere in the middle?

    - by Kenny Winker
    I have an NSArray, with objects ordered like so: a b c d e f I would like to enumerate through this array in this order: c d e f a b i.e. starting at some point that is not the beginning, but hitting all the items. I imagine this is a matter of sorting first and then enumerating the array, but I'm not sure if that's the best technique... or, frankly, how to sort the array like this. Edit Adding details: These will be relatively small arrays, varying from 3 to 10 objects. No concurrent access. I'd like to permanently alter the sort order of the array each time I do this operation.

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  • className method?

    - by fuzzygoat
    I have just been watching the Stanford iPhone lecture online from Jan 2010 and I noticed that the guy from Apple keeps referring to getting an objects class name using "className" e.g. NSArray *myArray = [NSArray arrayWithObjects:@"ONE", @"TWO", nil]; NSLog(@"I am an %@ and have %d items", [myArray className], [myArray count]); However, I can't get this to work, the closest I can come up with it to use class, is className wrong, did it get removed, just curious? NSArray *myArray = [NSArray arrayWithObjects:@"ONE", @"TWO", nil]; NSLog(@"I am an %@ and have %d items", [myArray class], [myArray count]); Gary

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  • Show image from url in uiimageview

    - by skiria
    I try to show a image in my iphone app but it doesn't show. I connect in IB and I check to show a local image, it workd good. I also check the url from image and it is ok. I use the next code: NSURL *imageURL = [NSURL URLWithString: aVideo.urlThumbnail]; NSData *imageData = [NSData dataWithContentsOfURL:imageURL]; UIImage *image = [UIImage imageWithData:imageData]; imageView.image = image; and //Video.h NSString *urlThumbnail; and this is my code on the view. - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [tableView reloadData]; } - (void)viewDidLoad { [super viewDidLoad]; NSURL *imageURL = [NSURL URLWithString: aVideo.urlThumbnail]; NSData *imageData = [NSData dataWithContentsOfURL:imageURL]; UIImage *image = [UIImage imageWithData:imageData]; imageView.image = image; }

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  • incorrect variable value outside main()

    - by cru3l
    i have this code #import <Foundation/Foundation.h> int testint; NSString *teststring; int Test() { NSLog(@"%d",testint); NSLog(@"%@",teststring); } int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; testint = 5; NSString *teststring = [[NSString alloc] initWithString:@"test string"]; Test(); [pool drain]; return 0; } in output i have: 5 (null) why Test function doesn't see correct teststring value? What should I do, to have correct "test string" in output?

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  • Download and Archive Web Pages on the iPhone

    - by Stefan
    Hi, how do I download and archive full web pages (HTML, CSS, JS, images) on the iPhone? I know how to download the single files. But is there any existing approach to get all files (e.g. all included javascripts), which are linked with a particular web page?

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  • using KVO to update an NSTableView filtered by an NSPredicate

    - by KingRufus
    My UI is not updating when I expect it to. The application displays "projects" using a view similar to iTunes -- a source list on the left lets you filter a list (NSTableView) on the right. My filters update properly when they are examining any simple field (like name, a string), but not for arrays (like tags). I'm removing a tag from one of my objects (from an NSMutableArray field called "tags") and I expect it to disappear from the list because it no longer matches the predicate that is bound to my table's NSArrayController. ProjectBrowser.mm: self.filter = NSPredicate* srcPredicate = [NSPredicate predicateWithFormat:@"%@ IN %K", selectedTag, @"tags"]; Project.mm: [self willChangeValueForKey:@"tags"]; [tags removeAllObjects]; [self didChangeValueForKey:@"tags"]; I've also tried this, but the result is the same: [[self mutableArrayValueForKey:@"tags"] removeAllObjects]; Interface Builder setup: a ProjectBrowser object is the XIB's File Owner an NSArrayController (Project Controller) has its Content Array bound to "File's Owner".projects Project Controller's filter predicate is bound to "File's Owner".filter NSTableView's column is bound to "Project Controller".name

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  • UIAcceleration filtering

    - by Ilya
    Hi, I found the following piece of code in apple guidelines: - (void)accelerometer:(UIAccelerometer*)accelerometer didAccelerate:(UIAcceleration*)acceleration { //Use a basic low-pass filter to only keep the gravity in the accelerometer values accel[0] = acceleration.x * kFilteringFactor + accel[0] * (1.0 - kFilteringFactor); accel[1] = acceleration.y * kFilteringFactor + accel[1] * (1.0 - kFilteringFactor); accel[2] = acceleration.z * kFilteringFactor + accel[2] * (1.0 - kFilteringFactor); } What does it exactly do? What is this low-pass filter? Why do I have to apply it? Thank you in advance.

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  • Syncing Online Content with iPhone Application

    - by PF1
    Hi Everyone: I am looking for some way to sync a online XML file with my iPhone application and only download the newest changed items. Each item is marked with a date attribute, so I assume this is possible. I have heard that Core Data can accomplish this task, but I am unsure of the suggested method and how to approach implementing it. Thanks for any help.

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