Posts Tagged ‘xcode’

Get Crash Logs from your device

Posted in code on February 20th, 2015 by lucy – Be the first to comment

Have you had one of your apps crash on your device and you want to know why? Well look at the crash log. Get it from your device with these instructions.

Cocos2d V2 HD graphics labelling convention

Posted in code on June 12th, 2013 by lucy – Be the first to comment

GameBGiPad1.png          - For iPhone  
GameBGiPad1-hd.png       - For iPhone HD
GameBGiPad1-ipad.png     - For iPad  
GameBGiPad1-ipadhd.png   - For iPad HD


Posted in code on January 30th, 2013 by lucy – Be the first to comment

Real quick one, if you are trying to submit your app to iTunes through xcode and you find that the menu item Product->Build For->Build For Archiving is greyed out, then check your build target. It has to be IOS device, not one of the simulators.

Xcode – Could not launch app – No such file or directory Error.

Posted in code on November 20th, 2012 by lucy – 2 Comments

I’ve been expanding the amount of devices I have and returning to old code to try and sort out and update code that doesn’t run on newer IOS’s. While trying to compile Loopy Tunes, I came across the error  from Xcode, “could  not launch app, no such file or directory exists..” So here I found the solution due to one helpful blogger,

Orientation always in Portrait iOS6

Posted in code on October 1st, 2012 by admin – Be the first to comment

Right had to do a bit of research for this one, here is the fix I found that works from Natalie London


NSString *reqSysVer = @"6.0";
NSString *currSysVer = [[UIDevice currentDevice] systemVersion];

if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending){
    [window setRootViewController:viewController]; // This is for IOS6.....
    [window addSubview: viewController.view]; //This is for < IOS6....... (the old way)

In your ROOTVIEWCONTROLLER.m //will only be compiled for IOS6


- (NSUInteger) supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscape;

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
    return UIInterfaceOrientationLandscapeRight;

- (BOOL) shouldAutorotate {
    return YES;


- (NSUInteger) supportedInterfaceOrientations {
    return  UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown;

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
    return UIInterfaceOrientationPortrait;

- (BOOL) shouldAutorotate {
    return YES;

The page I got this from is

Creating an Ad Hoc version of your app

Posted in code on July 25th, 2012 by admin – Be the first to comment

I could write out how to do this, but I couldn’t do better than this post here.

And in case you need to know how to create your Ad Hoc Distribution Provisioning Profile, look at the Apple notes here

And if you want to know how to add devices for testing. Get the UDID from the iphone or ipad, and in the the IOS Provisioning Portal go to “devices”. Select “add devices” in the top right corner. Enter the device name and device ID and hit “submit”.


Posted in code on May 11th, 2012 by admin – Be the first to comment

Right so I get this one a lot, especially when I’m coding late at night and tired…which is most of the time. So, my main culprits are objects that I haven’t released in my dealloc method.

Especially look for anything that you created with ALLOC INIT, for example an array

[[NSMutableArray alloc] init]

You must, must, must release it.

Second most common is not removing the class from observing a Notification. So if you have something like

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(classMethod:) name:@"notificationName" object:nil];

Then again in your dealloc method, you must put this

[[NSNotificationCenter defaultCenter] removeObserver:self];

I’m sure there are more things, and I’ll add notes as I discover them.

xcode persistent data

Posted in code on May 8th, 2012 by admin – Be the first to comment

So you want to save some data to the users device for use in your app. The way to do it is thusly,

// declare your app data with whatever name you like
NSUserDefaults *yourAppData = [NSUserDefaults standardUserDefaults];

// retrieve your data with
NSString *myString = [yourAppData objectForKey:@"StringVariableName"];
int myInt = [yourAppData integerForKey:@"IntVariableName"];

// now if this is the first time the app has been run, these won't have any value,
// so it's probably best just to check they aren't null before you try to use them
    // then this is the first time it's been accessed
    // otherwise it has been created and has got a value so do whatever you need to with it here

// now to set data use the following

[yourAppData setObject:@"someStringData" forKey:@"StringVariableName"];
[yourAppData setInteger:2 forKey:@"IntVariableName"];

Load a class from String

Posted in code on May 3rd, 2012 by admin – Be the first to comment

I often need to dynamically load a class from a concatinated combination of strings and integers. So here is how you do it. In a game for example, you may have a LevelID stored in your appdelegate that changes at the game progresses, so I’ve made the example grabbing such a levelID from the delegate class.

YourAppDelegate *theDelegate = (YourAppDelegate*)[[UIApplication sharedApplication] delegate];
int LevelID = [theDelegate getLevelID];
NSString *levelToLoad = [NSString stringWithFormat:@"Level%i",LevelID];
Class newLevel = NSClassFromString(levelToLoad);

BAM, and it’s done.

Cocos2d scene transitions

Posted in code on May 1st, 2012 by admin – Be the first to comment

Easy Peasy, check out this link for how to and al available types.