Recent questions tagged objective

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I am mapping Json Data from Server using Restkit and I am Displaying those data by fetching from db. There is a ... ; data: <fault>) Any idea See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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558 views

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objective c - keyDown not being called

I have a custom NSView called SurfaceView. It is the contentView of a NSWindow and it handles basic ... [window makeFirstResponder:mainView]; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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525 views

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objective c - UITableView - Directly setting tableHeaderView property vs. Implementing -viewForHeaderInSection method

What's the difference between directly setting the tableHeaderView/tableFooterView properties: UIView *headerView = [[ ... return headerView; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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422 views

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objective c - Why NSNumber points to the same address when value are equals?

Given the following code: int firstInt, secondInt; firstInt = 5; secondInt = 5; NSNumber *firstNumber = [ ... as expected. Thanks, Jérémy See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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568 views

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objective c - Setting delegate to nil in dealloc

In Objective-C, I understand that if an object sets itself as the delegate of another object, it should set that ... is the purpose of that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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570 views

1 answer

objective c - sprite kit sprite not being colorized

I'm trying to colorize a spriteNode (in this case its named background) using sprite kit but cant get the color ... sprites and it never works. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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580 views

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objective c - using ARC, lifetime qualifier assign and unsafe_unretained

i'm a little confused about these two qualifiers... With ARC instead of using weak (i.e. if I need support ... can find only a few rows here See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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576 views

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objective c - Why does this create a memory leak (iPhone)?

//creates memory leak self.editMyObject = [[MyObject alloc] init]; //does not create memory leak MyObject *temp = ... a way to free the memory? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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600 views

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objective c - Why NSNotFound isn't -1 but NSIntegerMax

NSNotFound is defined as NSIntegerMax, which has different values on 32-bit and 64-bit, this brings a lot ... these results are inconsistent. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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527 views

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objective c - Sort characters in NSString into alphabetical order

I'm trying to re-arrange words into alphabetical order. For example, tomato would become amoott, or stack ... the NSString object itself? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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772 views

1 answer

objective c - Get NSWindow* from CGWindowListCopyWindowInfo

I have accomplished listing all the windows (in z order from front to back I think/hope) using ... that would be awesome! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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469 views

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objective c - Errors when making circular reference imports

My program was running fine, but I changed something and now it has over 48 errors. I think I know the problem ... } -(IBAction) aOpenWeb; @end See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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400 views

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objective c - SKPhysicsBody bodyWithPolygonFromPath memory leaks

I have a strange memory leaks when creating Sprite Kit physics bodies with custom shapes. This is how my ... I'm doing something wrong. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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536 views

1 answer

objective c - iOS - Custom table cell not full width of UITableView

I may be going about this wrong. So I have created a UITableView that essentially has ... setSelectionStyle:UITableViewCellSelectionStyleNone]; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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519 views

1 answer

objective c - iphone UIAlertView Modal

Is it possible to present a UIAlertView and not continue executing the rest of the code in that method until the ... alert? Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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509 views

1 answer

objective c - Better way to convert NSArray of NSNumbers to array of NSStrings

I have an NSArray consisting of NSNumbers and I want to convert this to an NSArray of NSStrings, by getting the ... this. Do you know one? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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309 views

1 answer

objective c - Adding a delegate to a custom UITableViewCell (bad access error)

I'm trying to add a custom delegate to a custom UITableViewCell of mine. On this cell I have a button which ... for all of your support anyhow! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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936 views

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objective c - NSBundle pathForResource returns nil

I've been trying to load a simple text file in a unit test for an iOS app. NSString* resourcePath = [[ ... Any help is very much apprechiated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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843 views

1 answer

objective c - Converting NSObject to NSDictionary

Hello I a class of type NSObject: ProductDetails *details = [[ProductDetails alloc] init]; details.name ... /convert-nsobject-to-nsdictionary See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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objective c - What is difference between self.timer = nil vs [self.timer invalidate] in iOS?

Can anyone explain me self.timer=nil vs [self.timer invalidate]? What exactly happens at the memory location of ... I will update that too. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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777 views

1 answer

objective c - How to retrieve a file/resource in a iOS framework bundle from a main program?

I use methods about creating a universal binary framework for iOS development to distribute a library. I would also ... Returns nil Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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419 views

1 answer

objective c - Is it dangerous to set off an autoreleased NSOperationQueue?

I have a task that takes a rather long time and should run in the background. According to the documentation, ... and take theTask with it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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382 views

1 answer

objective c - iOS7 Core Location not updating

I have a very simple app example that initialises and updates the users location.. On device it successfully throws ... has changed since iOS7? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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506 views

1 answer

objective c - NSDictionary keys sorted by value numerically

I store names as keys and scores as values into an NSDictionary for saving in NSUserDefaults. I then ... :@selector(compare:)]; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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581 views

1 answer

objective c - UITableViewCell selection Storyboard segue is slow - double tapping works though

I have a UITableViewController in a Storyboard. I have the selection of my UITableViewCell prototype trigger a segue to ... issue to me... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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525 views

1 answer

objective c - Why subclass NSObject?

What is the purpose/use of NSObject in Objective-C? I see classes that extend NSObject like this: ... declaring inheritance from NSObject? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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472 views

1 answer

objective c - simulator name is shown with id instead of os name in Xcode 6.2

I've installed additional ios simulators(7.1) just after installing Xcode 6.2 and now the simulator names look like ... do I change the names? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

469 views

1 answer

objective c - Override ringer volume in iPhone apps

I have built an app that plays lots of sounds the easy way: AudioServicesPlaySystemSound(someSoundID); When I use ... my application's volume? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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