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OBJECTIVE-C QUESTIONS

Passing data into a table view controller from a menu selection in a storyboard
Passing data into a table view controller from a menu selection in a storyboard
seems to work fine I believe the right way to get the data to your view controller is to use the prepareForSegue:sender: function from the originating view controller. If you implement this function in the view controller where you have your menu, it
TAG : objective-c
Date : January 11 2021, 03:32 PM , By : bdurbin
Get position in class hierarchy
Get position in class hierarchy
like below fixes the issue Is the a way to get the number of ancestors for an instance of class? E.g. a class of type UITouch would be of level 2 as it inherits from NSObject.
TAG : objective-c
Date : January 10 2021, 01:57 PM , By : Guid
How do I call an Objective C function?
How do I call an Objective C function?
it helps some times How to call a function in Objective C? For example: , To call this method from within the same class you would call :
TAG : objective-c
Date : January 10 2021, 01:47 PM , By : Mighty Mac
Concise description of how .h and .m files interact in objective c?
Concise description of how .h and .m files interact in objective c?
With these it helps People who come from other environments always seem to belive that something complicated is happening with the .c, .m, and .h files used in C and Objective-C programming.Actually, its very, VERY simple.
TAG : objective-c
Date : January 10 2021, 01:45 PM , By : n3txpert
How to figure out that two apps are on the same device on macOS(Alternative of identifierForVendor in macOS)
How to figure out that two apps are on the same device on macOS(Alternative of identifierForVendor in macOS)
should help you out In our app we access the system serial number. We use it to try prevent multiple users using the same account + for debug purposes (so not for ads or anything, our app has none). We also have code to access the hardware uuid but t
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user116330
[_LSDefaults sharedInstance]: unrecognized selector sent to class 0x1f36e3dd8
[_LSDefaults sharedInstance]: unrecognized selector sent to class 0x1f36e3dd8
help you fix your problem Do you use the UMCCommon or UMCAnalytics? This seems to the UMCCommon Component Bug in iOS13。 I have update to the UMCCommon 2.1.1，It disappeared.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : cthulhup
how to detect tvOS is jailbroken using swift
how to detect tvOS is jailbroken using swift
it should still fix some issue You can check if any of these files exist (Cydia stuff): /private/var/lib/cydia /var/cache/apt /var/lib/apt /var/lib/cydia
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Laques
Why does the direct dispatch version leak under ARC? (and how can I fix that?)
Why does the direct dispatch version leak under ARC? (and how can I fix that?)
I hope this helps . ARC assumes that a method whose name starts with new returns a +1 retain count.Your Client *client variable is __strong by default.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user183289
Having to cast to id to invoke isKindOfClass
Having to cast to id to invoke isKindOfClass
like below fixes the issue The problem is that your SwiftProtocol does not inherit from NSObject(Protocol) therefore the Obj-C compiler does not know that there is a method called isKindOfClass:.Using id basically means you don't want any type checki
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Justin Bowers
How to handle multiple alerts firing at the same time
How to handle multiple alerts firing at the same time
Any of those help Hi you can present only one Alert at a time. if you want more in chain so first dismiss exist Alerts. Here is Sample please check and update.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : James Lupiani
AVPlayerViewController - How to display always playback controls
AVPlayerViewController - How to display always playback controls
I wish this help you That's not possible. There is not any Public API of AVPlayerViewController to keep playback controls visible all time. You must have to make your own custom playback controls for this i.e. play button, seekbar, duration label etc
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : mlapida
Why am I allowed to write and use methods in an implementation that aren't declared in the header file in Objective-C?
Why am I allowed to write and use methods in an implementation that aren't declared in the header file in Objective-C?
hop of those help? The method declarations in the class interfaces are there for the compiler (to suppress warnings), since method lookup in Objective-C is done at runtime, and not compile time.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user187301
Reading Alias files
Reading Alias files
like below fixes the issue Check out BDAlias. This is a nice Cocoa wrapper around Alias.http://github.com/rentzsch/bdalias
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Ohad Barzilay
NSMutableArray accessing issue
NSMutableArray accessing issue
may help you . since you never allocate, retain, copy, etc. button you should not be releasing itjust get rid of the [button release]s
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user94076
How to order a window to front if you are not in the Application in Objective-C
How to order a window to front if you are not in the Application in Objective-C
will be helpful for those in need As you've discovered, changing the window order within your application does not have any impact on which application is active. You can bring your application to the foreground by activating it:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Mark W
What is the use of extern in declaring constants?
What is the use of extern in declaring constants?
hop of those help? The extern keywords forces the compiler to treat the statement as a declaration rather than a definition. In other words, extern prevents the compiler from reserving space for the variable. Thus, only the compilation unit which doe
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : ffmmjj
Why is Objective-C not very popular outside of the Apple community?
Why is Objective-C not very popular outside of the Apple community?
this one helps. Another way of thinking about this question might be: why did C++, rather than Objective-C, become the "Object-Oriented C"?I learned C++ in 1991, and remember that C++ seemed like the hot thing while Objective-C was this weird little
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : enginecrew
Can I assign array size using NSMutableArray?
Can I assign array size using NSMutableArray?
I think the issue was by ths following , The capacity field is seldom useful. The array will be expanded on demand anyway.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Kirks
incorrect variable value outside main()
incorrect variable value outside main()
around this issue You're shadowing a global variable with a local one. If the intent is to use the global testString, you shouldn't re-declare it with "NSString*".
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Aki Björklund
How to concatenate two float values in Objective-C?
How to concatenate two float values in Objective-C?
may help you . If you want a string with the string representation of two floats concatenated, try:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Mariocki
return nil for dateFromString call of NSDateFormatter
return nil for dateFromString call of NSDateFormatter
may help you . I am getting nil returned for the date variable in the below code. I can't find any problem with the date format, can anyone help? , Try
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : OllieDoodle
How to compare string with float? in Objective C
How to compare string with float? in Objective C
Does that help The == operator only makes sense when the two types are compatible, which is not the case between strings and floats. One side must be explicitly converted to the other.You may convert the NSString into a float:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user158193
How to use Calibri font?
How to use Calibri font?
I wish this helpful for you You want to use custom font in your application so first you can add the font in your project bundle then store font in to plist like this way..
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : mhedberg
CoreData many-to-many relationship NSPredicate Exceptions
CoreData many-to-many relationship NSPredicate Exceptions
Hope this helps First, seeing your data model would be helpful but I am guessing you are doing something like:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : jay
Objective-C Framework PSMTabBarControl does not work - NSTabView Tabs with Style
Objective-C Framework PSMTabBarControl does not work - NSTabView Tabs with Style
it helps some times I've ported a version of it and updated it all to work with IB 3.0+.http://codaset.com/robertjpayne/psmtabbarcontrol/
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : hammer_1968
How to use Doxygen with Xcode?
How to use Doxygen with Xcode?
With these it helps The parser is telling you XML is not well formed, but that error usually shows because nothing has been generated BEFORE running docsetutil. First thing should be to go over the many lines of console output and look for warnings,
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : John Tate
Creating Custom Twitter Application
Creating Custom Twitter Application
With these it helps Best place to start is here: http://apiwiki.twitter.com/
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : marocchino
Fastest way to iterate through an NSArray with objects and keys
Fastest way to iterate through an NSArray with objects and keys
wish of those help The fastest way to iterate over an NSArray would be to use fast enumeration. I your case this would be:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : jch
Why does my UIWebView not Allow User Interaction?
Why does my UIWebView not Allow User Interaction?
wish helps you You should really be loading this from a nib, but if you're going to create it programmatically, you probably want to add this to loadView:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : nickthecook
How can I compare two dates, return a number of days
How can I compare two dates, return a number of days
will help you From Apple's example, basically use an NSCalendar:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Timbo
Extract values between parenthesis from NSString
Extract values between parenthesis from NSString
hop of those help? Just to be complete:If you are absolutely sure of the format of your output you can use the array methods:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Eran Yahav
How do browsers know there is an RSS feed present for a given URL
How do browsers know there is an RSS feed present for a given URL
Does that help Web pages that have an associated feed will have an alternate link with one of the feed MIME types:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user185283
How to add info button to UIToolbar
How to add info button to UIToolbar
wish helps you You need to create a UIButton of type UIButtonTypeInfoLight (or, depending on your toolbar color UIButtonTypeInfoDark). You'd then use this button as the custom view for a UIBarButtonItem:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Paolo
Cocoa: getting a Table View cell to send action messages
Cocoa: getting a Table View cell to send action messages
To fix the issue you can do AFAIK, the cells in an NSTableView won't send action messages out to your application, they're sent to the NSTableView so it can update its data. NSTableView itself tries to be pretty clever and update your data directly,
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Aires
releasing arrays objective-c
releasing arrays objective-c
around this issue release only applies to Objective-C objects. A C style array (like you have there) is just some stack memory. In your case, it looks like you're using it to store 3x3=9 Objective-C objects in it. If you want to release them all, you
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Schmidt
UIScrollView with pages enabled and device rotation/orientation changes (MADNESS)
UIScrollView with pages enabled and device rotation/orientation changes (MADNESS)
it fixes the issue Is it necessary to have a separate UIViewController (PageViewController) for every page in your UIScrollView? Why not let your MainViewController take care of this.Resizing your views (and your UI in general) after rotating the dev
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : MJRider
"incomplete universal character name" with stringWithUTF8String
"incomplete universal character name" with stringWithUTF8String
seems to work fine \U and \u are not the same thing. The \U escape expects 8 (hex) digits instead of 4.This should work:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : pdkent
What is the main difference between framework and dynamic library
What is the main difference between framework and dynamic library
I wish this helpful for you At its heart, an OS X framework is a dynamically linked library. The Framework is a special directory structure called a "framework bundle" that contains one or more versions of the dynamically linked library, as well as d
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Carter
get type of NSNumber
get type of NSNumber
This might help you I recommend using the -[NSNumber objCType] method.It allows you to do:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : kokok13
How to make a blue button with white text?
How to make a blue button with white text?
I hope this helps . It sounds like your button is of the UIButtonTypeRoundedRect type. The link below should answer your question.Is it even possible to change a UIButtons background color?
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Anonymous
NSString (hex) to bytes
NSString (hex) to bytes
wish help you to fix your issue Fastest NSString category implementation that I could think of (cocktail of some examples):
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : jch
Memory leak in NSMutableArray allocation
Memory leak in NSMutableArray allocation
wish of those help It is standard procedure that objects returned from methods (in your case, contactsArray) are autoreleased before returning. You could either return [contactsArray autorelease]; or create it already autoreleased with [NSMutableArra
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user179938
NSCFString leak inVolving NSString
NSCFString leak inVolving NSString
hope this fix your issue That means that the object allocated at that point is leaked. In this case, most likely because you over-retained it somewhere and failed to release it.You need to carefully examine the lifespan of that particular string and
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Boris
NSCFArray leak in the NSMutablearray allocation
NSCFArray leak in the NSMutablearray allocation
With these it helps Your code will allocate a new instance of filteredListContent every time reloadTable is called, which will usually happen several times during the lifetime of your application. This causes a leak because the old instances are not
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Kiltec
How to use NSURLDownload
How to use NSURLDownload
I think the issue was by ths following , NSURLDownload not on iPhone see the note:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Alpinfish
How to enlarge dynamically an UILabel (label and font size)?
How to enlarge dynamically an UILabel (label and font size)?
With these it helps All you need to do is apply an affine transform to the UILabel object.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user87225
App crashes after a few seconds
App crashes after a few seconds
should help you out You haven't implemented your -timerFinished method declared in the header. In addition to declaring it in the header file, you need to provide the implementation of it, even if it's empty.Your app is crashing because the timer fir
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user176691
Undocumented Mac Calls
Undocumented Mac Calls
Does that help It's not altogether unheard-of, but if you're going to use them in release software, you need to make absolutely sure you have your shit together and test every version of OS X extensively before it comes out — because yes, Apple could
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : RichAA
How do I release an object allocated in a different AutoReleasePool?
How do I release an object allocated in a different AutoReleasePool?
seems to work fine First get a general understanding of the objective c memory management. You are confusing a lot of different things here. For example you don't have to retain the m_object since alloc already sets up the retain count with 1. Also n
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : jgood
How to edit Selection indicator in UIPicker?
How to edit Selection indicator in UIPicker?
Any of those help This is not a feature of UIPickerView in the disclosed API. The screenshot you show is either drawing the "hrs", "min", "sec" labels itself or is using an undisclosed API (possibly overriding the _UIPickerViewSelectionBar).It would
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : fedorafennec
How can I make the Tab key move focus out of a NSTextView?
How can I make the Tab key move focus out of a NSTextView?
wish help you to fix your issue You could implement -textView:doCommandBySelector: in your text view's delegate:
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user179445
How do I add Applescript support to my Cocoa application?
How do I add Applescript support to my Cocoa application?
may help you . If you want to send AppleScript from your application and need a sandboxed app, you need to create a temporary entitlement
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Nathan Good
Is there a Javadoc-like plugin for Xcode that automatically generates the doc template?
Is there a Javadoc-like plugin for Xcode that automatically generates the doc template?
hop of those help? The script here http://www.duckrowing.com/2011/05/14/using-the-doxygen-helper-in-xcode-4/ does exactly what you want.EDIT: Here is an updated version of the Script: https://github.com/premosystems/DoxygenXCodeHelper
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Sebastian Gift
UIKeyBoard resize on orientation change to landscape
UIKeyBoard resize on orientation change to landscape
around this issue I have this problem too, all I can think of is dismissing the keyboard and reshowing it (resign and then become first responder again). But that seems very unsatisfactory.Note also you should be converting the rect from screen coord
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Jim Davis
wait for CLLocationManager to finish before tweeting
wait for CLLocationManager to finish before tweeting
To fix the issue you can do You could register listeners in your class that implements the CLLocationManagerDelegate. For example,
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Ken
Difference between char *foo vs (char *)foo in Objective-C
Difference between char *foo vs (char *)foo in Objective-C
this one helps. There are two places your first expression can appear. The first is as a variable definition. By itself, char *foo is defining a variable - a pointer to char named foo. In the context of a function definition it defines the type of on
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : MikeW
Objective C / iPhone: How to add a timer to let the text update?
Objective C / iPhone: How to add a timer to let the text update?
it helps some times I want to write an application that allow user to count down the time. The time will be displayed using label. I want to update the label every second, how can I do it? or which API is suitable for me to do this? thz in advance.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : jim
how to keep the UIActivityIndicator "floating" above the UITable?
how to keep the UIActivityIndicator "floating" above the UITable?
Any of those help It all depends where you are placing the UIActivityIndicator. You need to give more detail or show some code. I assume you are putting the activity indicator in a UITableViewCell and then the activity indicator moves with the cell.I
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : user160048
How to remove subviews to release more memory
How to remove subviews to release more memory
it fixes the issue use clear cache concept for this. for more https://github.com/thest1/LazyList.
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : mlapida
Deallocating NSMutableArray of custom objects
Deallocating NSMutableArray of custom objects
Hope that helps I don't think you understand how memory management in Cocoa works. The array will retain the objects you add to it, and it will release them by itself when the array no longer needs them (such as when you release the array).In other w
TAG : objective-c
Date : January 02 2021, 06:48 AM , By : Der Ketzer

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