This tag should be used only on questions that are about Objective-C features or depends on code in the language. The tags "cocoa" and "cocoa-touch" should be used to ask about Apple's frameworks or classes. Use the related "iOS" and "OS X" for issues specific to those platforms.

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apple mach-O linker error but not if one class remvode from project membership

I'm getting apple mach-O linker error when building my app. But when I remove my project as a target membership of one of my classes, it works fine except I need to have my class in my project of ...
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7 views

NSFetchResultController with UICollectionView issue with indexes/cells on update and delete action

First time that I'm using UICollectionView, and I'm having some difficulties. Especially with updating and deleting cells (will focus on delete here, hopefully the came cause), with data from a ...
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6 views

Problems binding NSImageWell to Core Data

I have created a NSTableView and added an NSImageWell to one of the columns. I am now binding that column to the Core Data array controller arrangedObjects with the 'icon' key path (the field storing ...
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2answers
23 views

iphone - didSelectRowAtIndexPath: only being called after long press on custom cell

I am creating one table view based application. I have created a custom table cell for table, that contains 2 labels, 1 image and 1 button. The table view Data source method is working properly. I am ...
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12 views

Finding Path to Current Desktop Picture

During the pre-sandbox era, there was a way of finding the file path to the current desktop picture. I think one could use Defaults to read com.apple.desktop.plist (Library > Preferences) to see the ...
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21 views

Add new contacts into iphone Blocked List

Can we add new contacts into iphone blocked list category using the Core telephony framework in ios 7? Please suggest
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0answers
15 views

Why the Textfields and Buttons are not showing on right place when running on simulator?

when using UIStoryboard, i put some UITextFields and UIbuttons on View of my ViewController , by drag-and-drop, now when i run this on simulator all the Textfields and Buttons are tend to ...
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1answer
17 views

Update uipopover height when cell is added

I have a table view (without scrolling) inside a UIPopoverController which has 4 cells. And sometimes it needs to have an extra cell (1 max). If I am animating the adding and subtracting of that ...
2
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1answer
17 views

Algorithm or math to project a GIF file size?

I have a user's animated gif file that is about 10mb. I'd like to allow users to upload it and let me host it on my server, but I'd like to rescale it to fit a maximum file size of 5mb to conserve ...
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1answer
37 views

Lotto breaker program whats the equation

I was curious as to what it would take to mathematically solve lotto. Just For Fun. So I decided to find out exactly how many tickets I would need to buy, if I wanted to win the next Week's Lotto. ...
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5 views

AVCaptureScreenInput and kCGWindowListOptionOnScreenBelowWindow

I am doing screen capture with AVCaptureScreenInput. The app has a window with configuration options. I want to record the screen but not record the window in the recorder application. Quicktime does ...
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0answers
33 views

How to add UIBarbuttonitem different on navigationbar in each tabbar item iOS

I push Viewcontroller (viewcontroller 1) that including uitabbarcontroller has 3 viewcontroller (tabitem 1, tabitem 2, tabitem 3) .Now i want in each tabbaritem has different UIBarbuttonitem on ...
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28 views

How to make editable UITextField [on hold]

in reference to This Question a piece of code would be really helpfull. I am using UIStoryboards and ARC. ...Thanks
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27 views

Store past states of NSMutableArray in another NSMutableArray

I need to create an array that keeps track of the history of an existing array. I am doing this by storing the tracked array into another: [array2 addObject: array1]; As array1, changes I want ...
2
votes
1answer
27 views

How do I use strong and weak with sibling objects (either can be the parent) in Objective-C ARC?

I have two Objective-C objects that relate to each other in some way. You may think of this as a two-way relationship. With ARC, I understand that the parent should hold a strong reference to its ...

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