iphone

Using GraphicsServices.h/GSEvent as well as compiling CLI iPhone tools with Xcode

I sent this to KennyTM (has all the private framework headers on GitHub) but I figured I'd ask here too just in case someone has some good ideas or any way to help me out. I'm trying to write a command line utility that sends GSEvents to operate the keyboard, touch/drag elements onscreen, and operate hardware buttons (volume, home, slee...

Converting from RGB to HSL with Objective C

I'm quite new to objective c but have been programming for a while. I started creating a function that would convert from RGB to HSL and back again but I get a feeling it is way too long and headed in the wrong direction. Does anyone know of a simple way to perform this conversion? ...

iPhone SQLite Password Field Encryption

Good Afternoon Guys and Girls, Hopefully this will be a quick and easy question. I am building an App that requires the user to input their login details for an online service that it links to. Multiple login details can be added and saved as the user may have several accounts that they would like to switch between. These details will...

Creating Drill-Down Detail UITableView from JSON NSDictionary

I'm have a load of trouble finding out how to do this, I want to show this in a UITableDetailView (Drill-Down style) with each item in a different cell. All of the things I've read all show how to load a single image on the detail instead of showing as a UITableView. Does the dictionary have to have "children" in order to load correctl...

iphone/ipad dev - how to launch the system settings app programmatically

In the settings -> general, there is a switch to turn on/off the location services. In the Maps app, when location services is off, if the user click on the find me button, it pops up an alert and asks the user to turn on location services in the settings. It then exits the app and launch the settings app. How can I do that programmatica...

Objective-C: Scope problems cellForRowAtIndexPath

Update: It seems to be a problem with the scope of the "results." titleForHeaderInSection seems to be unaware of the "results" arrays content. Will post once I find a solution just in case anyone stumbles across this with the same problem. How would I set each individual row in cellForRowAtIndexPath to the results of an array populated...

Benchmarking a particular method in Objective-C

I have a critical method in an Objective-C application that I need to optimize as much as possible. I first need to take some easy benchmarks on this one single method so I can compare my progress as I optimize. What is the easiest way to track the execution time of a given method in, say, milliseconds, and print that to console. ...

PRoblems Running Core Plot Tuorial

I am following the tutorial here about core plot here.... http://www.switchonthecode.com/tutorials/using-core-plot-in-an-iphone-application I am getting errors with the following lines of code //SAYING INCOMPATIBLE TYPE FOR AURGUMENT 1 'setMajorIntervalLength' axisSet.xAxis.majorIntervalLength = [NSDecimalNumber decimalNumberWithString...

Core Data - Fetch Related Records

Hi all, I have a Core Data object called Car that has a one-to-many relationship with another Core Data object called Claims (i.e., one Car has many Claims). I've created the entities in the data model editor, and am able to list, edit, and work with the Car objects. What I can't figure out is this: given a Car, how to get an array of...

Problem importing Quartz framework

I have added the Quartz framework to my project, but when I compile I get the following errors: ld: framework not found Quartz Command /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1 ...

How do I detect shake while movie is playing?

I have an iphone app where I am able to shake and play a random file with MPMoviePlayerController. But while the Movie Player is on the screen, it is unable to detect a shake. How can I get the Movie Player to detect shakes while playing? Thanks for your help! ...

Retaining objects in game iphone

Hello - I am trying to create a game and have run into what is probably a pretty easy problem to solve. As the player goes through the game, many objects (Vehicle) will be added and removed. The Vehicles get added to an array called currentVehiclesMutableArray. My problem is I cant figure out how to retain a Vehicle so that it remai...

Great UIKit/Objective-C code snippets

New to Objective-C iPhone/iPod touch/iPad development, but I'm starting to discover lots of power in one-liners of code such as this: [UIApplication sharedApplication].applicationIconBadgeNumber = 10; Which will display that distinctive red notification badge on your app iphone with the number 10. Please share you favorite one or two...

get data from online once and then viewable offline

Okay, I want to have an app that takes phone numbers from an online database and displays them in a table view. When the user is not online, I want them to still be able to see the numbers they already got from the database in the table view. If the user manages to go back online, the database updates the view. My question is, is this po...

Identifying iPhone OS's on a Network and Sending Push Notifications

tldr; Can you identify devices on your network as an iPhone OS device easily? Can you send push notifications to devices identified as using the iPhone OS on your network without a a target app? Is is possible to identify which devices on a network are using the iPhone OS? With this information, is it possible to send push notificatio...

NSString: EOL and rangeOfString issues

Could someone please tell me if I am missing something here... I am trying to parse individual JSON objects out of a data stream. The data stream is buffered in a regular NSString, and the individual JSON objects are delineated by a EOL marker. if([dataBuffer rangeOfString:@"\n"].location != NSNotFound) { NSString *tmp = [dataBuffer ...

Rotating and Moving a UIImageView (CocoaTouch)

This code works to rotate: CGAffineTransform transform = CGAffineTransformMakeRotation(radians(lastAngle++)); anImage.transform = transform; and this code works to move my UIImageView CGRect frame = [anImage frame]; frame.origin.x+=1; frame.origin.y+=1; [anImage setFrame:frame]; but when I combine them, the image str...

Can I learn the iPhone SDK and complete an app by September?

Hi everyone, I'm wondering if it's realistically possible to learn the iPhone SDK and complete an app by the end of this summer. The app shouldn't be too difficult, it would just interact with my site's API and essentially just fetch, create, and edit resources. I already have a little experience with the SDK (and I'm comfortable with Ob...

How can I launch QuickTime from my app?

I am trying to load a video from the web, but am having trouble getting it to appear in QuickTime. I can only hear the audio. I would like it to launch QuickTime. - (void)loadView { NSURL *movieURL = [NSURL URLWithString:@"http://movies.apple.com/media/us/mac/getamac/2009/apple-mvp-biohazard_suit-us-20090419_480x272.mov"]; if ...

Sorting text and attached images in MFMailCompositeViewController?

In the app I'm currently writing I'd like to populate the message body of an e-mail with a combination of text and images. It took me forever to find out that in order to get an embedded image, you had to have bold tags in the message body (...uhhh, yeah), otherwise the image just shows up as an attachment. But now I have the problem t...