Need to have an NSTextField with a text limit of 4 characters maximum and show always in upper case but can't figure out a good way of achieving that. I've tried to do it through a binding with a validation method but the validation only gets called when the control loses first responder and that's no good. Temporarly I made it work by ...
I'd like to use properties for my instance variables, but in many cases, I only want the class itself to have access to the setter. I was hoping I could do something like this: Foo.h: @interface Foo { NSString *bar; } @property (readonly) NSString *bar; @end Foo.m: #import "Foo.h" @interface Foo () @property (copy) NSString *bar...
I'm making a simple tab bar iPhone application. It has two tabs, one with a UIWebView and the other with a few text fields to hold settings, and a button to save the settings. What I want to do is reload the UIWebView when the user clicks save on the settings tab/view. I already have it saving the settings, I just need to figure out h...
Hello All, When I try to edit texts in my iphone application (UITextfield), it auto-corrects my input. Could you let me know how can I disable this? Thanks. ...
Ok, here goes. I've completed a Cocoa foundation-tool that calculates mean absolute deviation of random integers (Just as a learning project). I've moved the calculation into a function called "findMeanAbsoluteDeviation()" It accepts a NSMutableArray of NSNumber objects to preform calculations. Anyways. So this works all fine and dandy...
I want to build my iphone application only using device ID without connecting the device to my apple PC.Can i do this?If yes then how can i do that. please give me some instruction on it. ...
I've got a float value from an accelerometer which looks like this: -3.04299553323 I'd like to get -3.04 for example. Is there an easy way for rounding that float value? Edit: http://stackoverflow.com/questions/752817/rounding-numbers-in-objective-c ...
Hi to all I am developing one application. In that I have toolbar on keyboard. But I want that when I press keys, the key values should be displayed in toolbar textfield. So if anyone knows kindly reply. ...
I'm dealing with an undocumented API that I'm trying to do a bit of reverse engineering on - don't worry this isn't malicious, just trying to fulfill a use case in a creative way. I've got a pointer to a C structure. Is there a way for me to determine by examining the memory how many members this structure has? Their values? I suspec...
I've been looking for some concrete scenarios for when NSOperation on the iPhone is an ideal tool to use in an application. To my understanding, this is a wrapper around writing your own threaded code. I haven't seen any Apple demo apps using it, and I'm wondering if I'm missing out on a great tool instead of using NSThread. The ideal s...
Hi Im working on an iPhone application and want to represent money ($) amounts. I can't use float because they introduce certain amount of rounding errors. What can I use? Im thinking of defining my own Money class and store dollars and pennies as NSInteger internally. @interface Money : NSObject { //$10.25 is stored as dollas=10 ...
I'm using the singleton pattern in several places in an application, and I'm getting memory leak errors from clang when analyzing the code. static MyClass *_sharedMyClass; + (MyClass *)sharedMyClass { @synchronized(self) { if (_sharedMyClass == nil) [[self alloc] init]; } return _sharedMyClass; } // clang error: Object ...
Say I have a large number (integer or float) like 12345 and I want it to look like 12,345. How would I accomplish that? I'm trying to do this for an iPhone app, so something in Objective-C or C would be nice. ...
I have a feeling that this is stupid question, but I'll ask anyway... I have a collection of NSDictionary objects whose key/value pairs correspond to a custom class I've created, call it MyClass. Is there an easy or "best practice" method for me to basically do something like MyClass * instance = [ map NSDictionary properties to MyClass...
I followed the Core Data tutorial at http://macresearch.org/cocoa-scientists-part-xxiii-itunes-ifying-core-data-app The finished application displays data in an NSTableView. Is the ordering of the data persistent as well? And is there a way that you can allow drag and drop rearrangements to the order of the records? I am thinking ab...
I am having issues with adding a header to NSMutableURlRequest, the problem is that when I add the header below "Authorization" it does not show up. However if I replace my instance variable "auth" below with a static string exp (@"asdadsadsadga") it the "Authorization" header will show up. I am pretty lost at this point. NSURL *url = [...
Hi, I have a problem, how can we retrieve the array data stored in plist file. The plist file and source code is as shown below, ------------------------plist File------------------------- <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">...
I'm making an iPhone application that has my own custom text view that can display multi-formatted text and I need to interact with the keyboard somehow. Right now I am using a hidden UITextField and the delegate method textField:shouldChangeCharactersInRange:replacementString: to get the typed characters. However this feels kludgy and I...
I understand having one asterisk * is a pointer, what does having two ** mean? I stumble upon this from the documentation: - (NSAppleEventDescriptor *)executeAndReturnError:(NSDictionary **)errorInfo ...
I am developing one application. In that I want to detect through coding that "is iphone on silent mode or not?". I am developing it by using cocoa with objective-c. If anyone knows it kindly reply. ...