Recent questions tagged objective

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objective c - Xcode 7 iOS 9 UITableViewCell Separator Inset issue

This is not a question, rather a solution to the problem I faced. In Xcode 7, when the ... .cellLayoutMarginsFollowReadableWidth = NO; } See Question&Answers more detail:os...

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

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349 views

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objective c - Dealing with duplicate contacts due to linked cards in iOS' Address Book API

Some beta-users of my upcoming app are reporting that the list of contacts contain a lot of duplicate records. I' ... hand. See my answer below See Question&Answers more detail:os...

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

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586 views

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objective c - Convert NSData bytes to NSString?

I'm trying to use the BEncoding ObjC class to decode a .torrent file. NSData *rawdata = [NSData dataWithContentsOfFile ... to be at fault.. See Question&Answers more detail:os...

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

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471 views

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objective c - Weak Reference to NSTimer Target To Prevent Retain Cycle

I'm using an NSTimer like this: timer = [NSTimer scheduledTimerWithTimeInterval:30.0f target:self selector:@selector(tick ... haven't seen this. See Question&Answers more detail:os...

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

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545 views

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objective c - Protocol versus Category

Can anyone explain the differences between Protocols and Categories in Objective-C? When do you use one over the other? See Question&Answers more detail:os...

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

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430 views

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objective c - How to write the method to execute after completion of two methods (ios)

I have 2 methods to be executed on a button click event say method1: and method2: .Both have network calls ... will be very helpful.Thank you See Question&Answers more detail:os...

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

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415 views

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objective c - How to segue back to a UIViewController that's already loaded?

I have a view on a storyboard the has a button to perform a certain action. To perform this action though, ... instance of the view controller? See Question&Answers more detail:os...

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

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481 views

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objective c - Xcode 7.3 cannot create __weak reference in file using manual reference counting

After updating to Xcode 7.3, it throws the error Cannot create __weak reference in file using manual reference ... anyone solved this issue? See Question&Answers more detail:os...

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

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485 views

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objective c - How to use iCloud to store and sync app files

I already have an iPhone App that stores data in a file in the local documents folder. Now I learnt about ... I only need some code examples. See Question&Answers more detail:os...

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

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390 views

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objective c - how to hide status bar when splash screen appears in iphone?

Is there a way to hide the status bar when showing splash screen in iPhone and then show again in application? See Question&Answers more detail:os...

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

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440 views

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objective c - How do I add Applescript support to my Cocoa application?

I am new to the world of Cocoa programming, and I want to add Applescript support to my application. The ... support to my Cocoa application? See Question&Answers more detail:os...

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

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535 views

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objective c - Difference between Xcode version (CFBundleShortVersionString) and build (CFBundleVersion)

In Xcode 4, I see this for my target summary: The "Version" input corresponds to CFBundleShortVersionString in the ... ", assuming one exists? See Question&Answers more detail:os...

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

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477 views

1 answer

objective c - How to get rid of the 'undeclared selector' warning

I want to use a selector on an NSObject instance without the need for an implemented protocol. For example, there's ... doable? How? Cheers, EP See Question&Answers more detail:os...

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

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337 views

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objective c - How to unit test my models now that I am using Core Data?

I have been developing an iphone application using a domain model, and have put off the persistence aspect of the ... with Core Data? Thanks. See Question&Answers more detail:os...

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

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625 views

1 answer

objective c - Command-line tool for converting PLIST to JSON?

Is there a command line tool available for converting .plist files to JSON? If not, what would be the approach ... and serialize that as JSON? See Question&Answers more detail:os...

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

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442 views

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objective c - iPhone Simulator location

Where on my machine is the iPhone simulator installed? I'm been trying to find where a test application I run in the simulator is stored. See Question&Answers more detail:os...

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

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496 views

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objective c - Xcode keeps asking for password to use the System Keychain

I'm running Xcode 4.3.2, under Lion 10.7.3, but every time I'm installing my iPhone app on the ... suggestions on how to solve this problem? See Question&Answers more detail:os...

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

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377 views

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objective c - How do I get the current version of my iOS project in code?

I would like to be able to get the current version of my iOS project/app as an NSString object without ... in the Project target summary. See Question&Answers more detail:os...

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

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561 views

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objective c - iOS 7 Translucent Modal View Controller

The App Store app on iOS 7 uses a frosted glass-type effect where it is possible to see the view behind. Is ... the button at the top-right. See Question&Answers more detail:os...

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

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307 views

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objective c - What Design Patterns are used on iOS other than MVC?

I need to know about the design patterns used in iPhone development other than MVC. Please reply with any sample ... with code snippet. Thanks. See Question&Answers more detail:os...

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

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397 views

1 answer

objective c - How to add sound while UIScrollview is scrolling in iphone sdk?

This is my code for adding sound while UIScrollview is scrolling in iPhone SDK. In this code, how to add the ... ; } [super viewDidLoad]; } See Question&Answers more detail:os...

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

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351 views

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objective c - xml parsing error while using wcf framework for web services

it's first time while iam working on wcf soap services for iOS application , em getting problem when trying to send ... </s:Body></s:Envelope> 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 - putting ivars into init

I have two view controllers: BSViewController which contains the source ivars number and array, and BSotherViewController ... array); } @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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459 views

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objective c - How to post message to Facebook wall from the iPhone SDK?

I am new to iPhone. My application connects to Facebook using the iPhone SDK, and I can post a default ... Facebook with your iPhone App. See Question&Answers more detail:os...

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

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471 views

1 answer

objective c - Why do I get this error when I try to pass a parameter in NSURL in iOS app?

This is what I have in a public method - (IBAction)methodName NSString *quoteNumber = [[self textBox] text]; NSURL ... 2 What am I doing 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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483 views

1 answer

objective c - Wait for completion block of writeImageToSavedPhotosAlbum by semaphore

In my app I open the camera by a picker and after the photo has been taken I'd like to safe it by the ... View and Core Data here... } See Question&Answers more detail:os...

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

0 votes

389 views

1 answer

objective c - Force asynchrounous Firebase query to execute synchronously?

I'm designing an app that uses firebase to store user information. Below, I'm trying to write a method that ... stored in the main firebase. See Question&Answers more detail:os...

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

0 votes

533 views

1 answer

objective c - iPhone SDK: Check validity of URLs with NSURL not working?

I'm trying to check if a given URL is valid and i'm doing it like this: - (BOOL)urlIsValid:(NSString *) ... tell me why? 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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