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• How to position a UIToolbar at the top of the screen?

  - by Mr_Nizzle

  I've figured out how to hide the navigation bar and then show the toolbar it has built-in but the toolbar appears at the bottom os the screen how can i position the toolbar on the top of the scren? here's some of my code UIBarButtonItem *yesterday = [[UIBarButtonItem alloc]initWithTitle:@"Yesterday" …

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• encoding and decoding of a string using base128 in iphone sdk?

  - by monish

  Hi guys, Can Anyone help me in encoding and decoding a string using base128 with a sample code. Anyone's help will be much appreciated. Thank you, Monish.

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• CSV parser with low memory footprint for iPhone

  - by catlan

  After testing my app with Instruments I realized that the current CSV parser I use has a huge memory footprint. Does anybody have a recommendation for one with a low memory footprint?

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• Clean bindings with structs

  - by andyvn22

  I have a model class for which it makes quite a lot of sense to have NSSize and NSPoint instance variables. This is lovely. I'm trying to create an editing interface for this object. I'd like to bind to size.width and whatnot. This, of course, doesn't work. What's the cleanest, most Cocoa-y solution to this problem? Of course I could write…

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• Can I mix OpenglES with standard Cocoa widgets on an iPhone app?

  - by ruibm

  In case this is possible, it would be nice to see some examples! Thanks, rui

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• label in my tabel celll

  - by ven in Iphone world

  hi this is lak.. thank you for your fast feedback but that not worked for me i am using labels in table.. UILabel *label1 = (UILabel *) [cell viewWithTag:1]; label1.backgroundColor = [UIColor clearColor]; label1.text=aStation.station_name; label1.textColor = [UIColor colorWithRed:0.76 green:0.21 blue:0.07 alpha:1.0]; [label1 setFont:[UIFont…

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• Why can't I access the facebook friends list after reopening a session in ios

  - by user1532390

  I am upgrading to the facebook 3.0 sdk for ios. Things went well, until I tried to open an existing session after relaunching the application. I am trying to access the list of friends for the facebook user. if ([[FBSession activeSession] isOpen]) { [request startWithCompletionHandler:^(FBRequestConnection *connection, id result,…

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• Getting random objects from an array, and if the objects are the same, get a new object.

  - by XcodeDev

  Hi, I have made a jokes application, where the user generates a joke and the joke will display in a UILabel. However I am trying to randomise the jokes show, but I do not want to show the same joke twice. Please could you tell me how I could do this. I am using the code below to try and do that, but it seems that it is not working. …

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• How Do I create a synchronous version of NSURLConnection

  - by quinn

  I am using NSURLConnection inside of an NSIncrementalStore to synchronize my NSManagedObject with rest based web service built in Rails. I am aware of +sendSynchronousRequest:returningResponse:error but my understanding is that will not allow me to access such things as the HTTP response status code which I will need to properly…

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• Keeping window of another application active while still receiving mouse events from another window'

  - by hishamk

  Is there a way to have my app's window receive keyboard and/or mouse events (i.e. user clicking on window's buttons) while still retaining focus to another, unrelated app? I've tried configuring my window at different levels, including [myWindow setLevel:NSPopUpMenuWindowLevel] to no avail.

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• Cocoa - NSFileManager removeItemAtPath Not Working

  - by Kevin

  Hey there everyone, I am trying to delete a file, but somehow nsfilemanager will not allow me to do so. I do use the file in one line of code, but once that action has been ran, I want the file deleted. I have logged the error code and message and I get error code: 4 and the message: "text.txt" could not be removed Is there…

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• Getting Object allocation at UIBarButtons

  - by Rani

  Hi guys, I'm getting allocation at UIBarbutton that i added to toolbar. masterviewcontroller.h UIBarButtonItem *markReadItems; UIBarButtonItem *markUnReadItems; UIBarButtonItem *refreshItems masterviewcontroller.m -(id)init{ if(self = [super init]){ refreshItems = [[UIBarButtonItem alloc]…

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• How to identify four sided polygon (not rectangle) collision detection?

  - by Chandan Shetty SP

  I am developing 2D game for iPhone, for that I need to handle collision detection. My need is: I have two polygons, each is a four-sided polygon (not a rectangle), I need to check whether they are collided or not.

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• What type of file do i use for NSMutableDictionary withcontentofURL?

  - by user347741

  I want to fill a NSMutableDictionary with content out of a URL File. What type file must it be and how must it be structured? NSMutableDictionary *myMutableDictionary = [[NSMutableDictionary alloc] initWithContentsOfURL:[NSURL URLWithString:@"http://example.com/list.txt"]];

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• Cocoa Touch best practice for capturing/logging/diagnosing crashes

  - by Dylan

  As I get closer to releasing my first public iPhone app I'm concerned about catching crashes in the field. I'm curious to hear how others have gone about this. I'm not sure what's possible outside of the debugger. Is all lost with an EXC_BAD_ACCESS or can I still catch it and get something useful…

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• How do you keep text from wrapping in an NSTableView using NSAttributedString

  - by Justin

  I have an NSTableView that has 2 columns, one for an icon and the other for two lines of text. In the second column, the text column, I have some larger text that is for the name of an item. Then I have a new line and some smaller text that describes the state of the item. When the name becomes…

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• Dynamically changing background color of a UIView

  - by EricM

  Hello- Here's my setup. I have a viewcontroller that I'm creating and adding as a subview. The viewcontroller presents some options that a user can chose from. The viewcontroller is being pushed in response to a "long press" gesture. Within the viewcontroller, I added a child UIView to group…

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• rotating circle with swipe question

  - by Joe

  Okay so I'm making something that basically works as a knob, but only half on the screen -- so I just need horizontal swipes to cause it to rotate. I have it nearly all sorted with one exception: if you change direction of your swipe in mid-swipe, the rotation doesn't change direction. I even…

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• Why is autorelease especially dangerous/expensive for iPhone applications?

  - by e.James

  I'm looking for a primary source (or a really good explanation) to back up the claim that the use of autorelease is dangerous or overly expensive when writing software for the iPhone. Several developers make this claim, and I have even heard that Apple does not recommend it, but I have not…

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• Where should I remove a notification observer?

  - by nevan

  I set up a notification observer in my view controll init method like so: [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(saveState) name:UIApplicationWillResignActiveNotification …

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• UItableView Problem in deleting items from database

  - by Arun Sharma

  Hi All, I am using in UitableView database.My table view works successfully (add single item,add multiple item,delete all) only problem is there when i want to delete single item for this i using Uitableview edit option. so how i add database method for deleting single item from…

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• What can I read from the iPad Camera Connection Kit?

  - by HELVETICADE

  I'm building a small controller device that I'd like to partner with a computer. I've settled on using OSC out from my custom built hardware and am pretty satisfied with what I can get from WOscLib. Two goals I'd like to achieve are portability and a very ratio between…

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• Read Text File in Document Folder - Iphone SDK

  - by Kevin

  Hello everyone I have this code below: NSString *fileName = [[NSUserDefaults standardUserDefaults] objectForKey:@"recentDownload"]; NSString *fullPath = [NSBundle pathForResource:fileName ofType:@"txt" inDirectory:[NSHomeDirectory()…

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• Why call autorelease for iVar definition in init method?

  - by iFloh

  Hi, I just familiarise myself with the CLLocationManager and found several sample class definitions that contain the following init method: - (id) init { self = [super init]; if (self != nil) { self.locationManager =…

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• Graphical glitches when adding cells and scrolling with UITableView

  - by Daniel I-S

  I am using a UITableView to display the results of a series of calculations. When the user hits 'calculate', I wish to add the latest result to the screen. This is done by adding a new cell to a 'results' section. The UITableViewCell…

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