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I am new to Xcode. I have a series of sports apps that are designed to easily switch out the data for different teams. The data is in html. To create an app for a new team, I duplicate the parent app, rename it, and switch out the data files. The new app crashes when I press a button. I get the following response:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: ' -[NSSet setByAddingObject:]: object cannot be nil'*
When I run an Exception Breakpoint, it leads me to this line:
removable = [removable setByAddingObject:oteam];
I am confused because this line of code is not an issue in the parent app at all. The 2 apps' code looks identical, but the offspring app crashes. Any ideas?
The error message indicates that oteam is nil.
Objective-C collections
(arrays, dictionaries, sets) cannot hold nil elements, therefore
[removable setByAddingObject:oteam];
crashes if oteam == nil.
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I am having a small issue in my application. I have it to where when the user presses the facebook button the SLComposeViewController pops up with text in it that I have preset. That is where my problem comes in. I would like it to say I just climbed and then at the end, whatever climb that they pressed into. Example: I just climbed Mount Everest. The I just climbed part I can get to show up, but when I try and use stringWithFormat it gives me an error which I will post below, along with my code. The climb title is set a a label in my DVC with this line self.titleLabel.text = self.climbTitle;
Line with problem:
[mySLComposerSheet setInitialText:NSString stringWithFormat:#"%#Climbed", [_climbTitle];
Error:
DetailViewController.m:79:39: Unexpected interface name 'NSString': expected expression
I hope I have worded this question appropriately and have given enough context for everyone to understand my issue, if I haven't, please inform me and I will correct it.
Thanks
It should be [NSString stringWithFormat:#"%#Climbed", _climbTitle];
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What does this error mean and how to handle it?
I suspect it happens when I load images from a web service with WEBClass and during that time I push some VC that needs other data from the WEBClass. This class is a shared instance. Could that be a possible reason?
Open the Product menu in Xcode, select Edit scheme and then choose the Diagnostics tab. There you have Enable Zombie Objects. Once selected and run, the debugger will point you to the object that is causing a trouble.
Product > Edit Scheme > Diagnostics > Enable Zombie Objects
And try to reproduce the crash.
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What are all bad things doing it?
What will happen if changing properties on it?
Will it go in some kind of recursion?
Basically the app would go into an endless recursion and crash eventually, as soon as you try and show it.
More on that, at this fine article by Mike Ash - https://www.mikeash.com/pyblog/friday-qa-2014-01-10-lets-break-cocoa.html
Will crash: "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't add self as subview'"
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I've a tabbar application with three tabs. On third tab there is a navigation controller and account setup is done there. Once the account setup is complete, I pop all the controllers on that tab and change the selected tab to first. But after then when I select the tab to third, application crash with message "message sent to deallocated instance 0x15d17cc0". This issue occurs only on iOS 7 and not happening on iOS 6 or below.
Add Exception Breakpoint from Breakpoint Navigator and find what that instance is. Most probably your problem is a simple memory management problem and it will be fixed when you autorelease that instance instead of retaining at first.
Edit: Also you can look at this great answer
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i was creating an app that have sliding menu. it reads data from rss using xml parsing and reads data from dashboard using JSon.
my problem is that i got EXC_BAD_ACCESS in main.m and in debug area, there is no exception log...
features are works perfectly. but suddenly app crashes with this exception.
am using Xcode 5 with arc.
is this any kind of memory issue. how can i resolve this?
i read some article related to memory management. but that are not much helpful...
pls help me....
You can try to add "Symbolic Breakpoint" and check where is the problem
This is instruction how to set breakpoint in xCode 5
Too little information to solve problems
This could be because:
The pointer used to point to memory that was ok, but its chunk was deallocated.
The pointer is corrupt.
Read this.