Recent questions tagged objective

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objective c - NSLog() to both console and file

I would like to redirect NSog() to file, but still to see the output in console. I am aware that stderr ... written to both console and file. See Question&Answers more detail:os...

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

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352 views

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objective c - how do I set an existing NSDate's time?

how do I set an existing NSDate's time? That is I have a date (say current date/time), but then want to set ... case but rather "set" the time. See Question&Answers more detail:os...

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

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443 views

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objective c - How to show the inspector within your WKWebView based desktop app?

I'm looking for a way to show the inspector for a WKWebView inside my Mac app. With WebKit1 and WebView it ... 'm ok with using private stuff. See Question&Answers more detail:os...

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

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650 views

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objective c - Automatic Reference Counting: Pointer to non-const type 'NSError *' with no explicit ownership

In updating some of my code to be in compatible with the iOS 5 SDK, I attempted to refactor my code by using ... ." How might I fix 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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591 views

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objective c - tap gesture not recognized on uiimageview

I added two uiimageviews, one on another subview uiview (imageview1,imageview2). In the first view the top ... where the mistake is? See Question&Answers more detail:os...

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

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372 views

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objective c - Get array of property value of each object in another array without a for loop

This might be a basic question, but I can't seem to find an answer. Suppose I have an NSArray (carArray) with ... .color]; } 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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427 views

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objective c - How to get the last object of an NSArray

So I have an array which the amount of items could vary. I was wondering if there is anyway I can get the ... anyway that's better than 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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389 views

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objective c - How to erase some portion of a UIImageView's image on iOS?

I have a view with UIImageView and an image set to it. I want to erase the image as something like we do in ... ? Also, how do I undo erase? See Question&Answers more detail:os...

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

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329 views

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objective c - iOS - Notification of when a call is taking place?

Is it possible to be notified or detect when a GSM/CDMA call is taking place on an iOS handset? I have an ... call is taking place on a device? See Question&Answers more detail:os...

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

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413 views

1 answer

objective c - How do I update a progress bar in Cocoa during a long running loop?

I've got a while loop, that runs for many seconds and that's why I want to update a progress bar ( ... very much for any helpful answer. See Question&Answers more detail:os...

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

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381 views

1 answer

objective c - iPhone Development: how to use custom fonts?

I used a special font in my photoshop design, is it possible to use these fonts natively in the iphone app? or ... do you do with dynamic text? See Question&Answers more detail:os...

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

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511 views

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objective c - CMMotionManager and the Gyroscope on iPhone 4

I am trying to simply NSLog the output of the new iPhone 4 Gyroscope. But after reading the documentation ... much appreciated. Many 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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370 views

1 answer

objective c - How to programmatically add calendar subscriptions on iOS?

Via the settings panel of your iPhone, you can add a subscription to a remote .ics calendar format. I have a ... not a url scheme. Who knows? See Question&Answers more detail:os...

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

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331 views

1 answer

objective c - prepareForSegue is not called after performSegue:withIdentifier: with popover style

I have a universal app, where I am sharing the same controller for a IPad and IPhone storyboard. I have put a ... . 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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323 views

1 answer

objective c - What is the difference between releasing and autoreleasing?

I still have some unclear understand about release and autorelease. What are the difference between both of them? I have ... ]; [dialog show]; } See Question&Answers more detail:os...

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

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414 views

1 answer

objective c - iPhone: Weird space at the top of UINavigationController

I'm having a strange problem with adding a UINavigationController to my iPhone application. I add the controller as ... help? 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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502 views

1 answer

objective c - Capturing full screenshot with status bar in iOS programmatically

I am using this code to capture a screenshot and to save it to the photo album. -(void) ... 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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651 views

1 answer

objective c - Encryption with RSA public key on iOS

I write an iOS app to communicate with an existing server. The server generates RSA key pair(public key and ... not only the public key. See Question&Answers more detail:os...

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

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696 views

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objective c - How to create PLIST files programmatically in iphone

I was looking to create plist file in my application Documents folder programmatically in objective C. I created a ... and then read 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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288 views

1 answer

objective c - Single-Stage vs Two-Stage Animation for iPhone Apps?

What are single-state and two-stage animation for rotating an iPhone window? This is the "error" message I ... LaMarche) on the Swap Project. 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 - UISplitViewController: remove divider line

When using UISplitViewController on the iPad there's a black vertical divider line between the root and detail view ... remove this line? 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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457 views

1 answer

objective c - Why retain a static variable?

Isn't it unnecessary to retain a static variable since it stays around for the duration of the ... NSManagedObjectContext+MagicalRecord.m#L24-29 See Question&Answers more detail:os...

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

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515 views

1 answer

objective c - Obj-C: Memory Leak of Malloc 48 bytes in strdup frame

In my app, I have am receiving multiple memory leaks. The object is Malloc 48 bytes, and it always originates ... let me know. Regards, Nick See Question&Answers more detail:os...

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

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361 views

1 answer

objective c - Switch container view dynamically

I'm using a storyboard container view. So I have a view controller containing a container view. I have a ... . Any help gratefully received. See Question&Answers more detail:os...

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

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595 views

1 answer

objective c - Is it possible to filter an NSArray by class?

Is there a way construct a predicate to filter by class type? I currently loop through the array and check to ... Maybe there is a cleaner way? See Question&Answers more detail:os...

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

0 votes

386 views

1 answer

objective c - Call a class method from within that class

Is there a way to call a class method from another method within the same class? For example: +classMethodA{ ... to call classMethodA 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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310 views

1 answer

objective c - Singleton Instance vs Class Methods

While recently working with Objective-C and various libraries written in it, I've noticed two really popular ... , testability-wise? Thanks! See Question&Answers more detail:os...

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

0 votes

476 views

1 answer

objective c - Invalid Swift Support / The SwiftSupport folder is empty

Environment: Xcode 7 GM I uploaded iOS app successfully using Xcode without error. This app is written in ... is unchecked at Archive. See Question&Answers more detail:os...

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

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