Recent questions tagged objective

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objective c - How to record audio through an iPhone app?

I want to record audio in my iPhone app and once the audio is recorded I want a dialog box to open which asks for ... my app. How can I do so? 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 - Sorting an array of doubles or CLLocationDistance values on the iPhone

I'm trying to sort a list of CLLocationDistance values by closest distance (ascending order). I first converted ... values in ascending order? See Question&Answers more detail:os...

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

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549 views

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objective c - Dismissing UIPickerView with Done button on UIToolBar

I am just trying out which is better with regards to dismissing a UIPickerView -- a button on the navigation bar ... someone help me with 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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451 views

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objective c - Non-repeating arc4random_uniform

I've been trying to get non-repeating arc4random_uniform to work for ages now for my iPhone app. Been over ... harder. Thankful for any advice. See Question&Answers more detail:os...

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

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412 views

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objective c - How to obtain the selected text from another application?

I will soon be working on an application which needs to get the currently selected text in the frontmost ... nothing will be returned. See Question&Answers more detail:os...

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

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396 views

1 answer

objective c - Is "self" weak within a method in ARC?

I have a method that occasionally crashes. -(void)foo{ [self doSomething]; [self.delegate didFinish]; [self ... crash [self doSomethingElse]; } See Question&Answers more detail:os...

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

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417 views

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objective c - Check that the contents of one NSArray are all in another array

I have one NSArray with names in string objects like this:@[@"john", @"smith", @"alex", @"louis"], and ... the first array are in the second? See Question&Answers more detail:os...

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

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473 views

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objective c - Capture iPhone screen with status bar included?

I am looking for a way to capture a screenshot on the iPhone with the top status bar included, I am currently ... is just a blank 20px space). See Question&Answers more detail:os...

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

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446 views

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objective c - How to compare time

How to compare time in Objective C? if (nowTime > 9:00 PM) && (nowTime < 7:00 AM) { doSomething; } See Question&Answers more detail:os...

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

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532 views

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objective c - NSNotification VS KVO

I feel that i don't fully understand difference between KVO and NSNotification... They seem to be so similar... ... context:@"Color-change" ]; See Question&Answers more detail:os...

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

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645 views

1 answer

objective c - How to add a Map annotation on MKMapView?

Hey, im trying to add an annotation on my map. How can i do it? Heres my code: - (void)abreMapa:( ... self.view addSubview:mapa]; } 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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632 views

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objective c - CGImageRef Memory leak

I'm having a memory leak when using this custom method which returns a CGImageRef. I can't release "cgImage" ... app crashes. return cgImage; } See Question&Answers more detail:os...

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

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487 views

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objective c - iphone uiscrollview and uiimageview - setting initial zoom

I use the following code to load an image into an scroll view. The image always loads at 100% zoom. ... self; [scrollView addSubview:imageView]; See Question&Answers more detail:os...

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

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605 views

1 answer

objective c - Unescaped control characters in NSJSONSerialization

I have this JSON http://www.progmic.com/ielts/retrive.php that I need to parse. When I do it with ... The easiest way? 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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417 views

1 answer

objective c - Creating a base-64 string from NSData

How is it possible to get a base64 string from an NSData instance? See Question&Answers more detail:os...

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

0 votes

474 views

1 answer

objective c - "image not found" Error while using Custom FrameWork

I created my own framework for one of my cocoa application. I added that framework to my project and called a ... help me, 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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465 views

1 answer

objective c - Getting the Action of UIGestureRecognizer in iOS

I have printed a UITableviewCell's gesture in - tableView:didSelectRowAtIndexPath method in NSLog as < ... you 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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588 views

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objective c - UISearchController Search Bar Position Drops 64 points

The search bar is appearing exactly 64 points too low: All of the other frames are exactly correct. Edit: - It ... view to occupy the full view. See Question&Answers more detail:os...

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

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516 views

1 answer

objective c - How can I receive touches using tvOS?

How can I receive touches using tvOS with the simulator? We need know touch position. UIPress - have no it! -(void) ... event { // Works fine! } See Question&Answers more detail:os...

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

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587 views

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objective c - Getting Mac Model number in Cocoa

I'm making a OS X app where I need to get the Mac model, for example: iMac11,3 MacBook3,1 And so on. Is there any class, or function to get 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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471 views

1 answer

objective c - What use cases are there for defining a new root class?

We know that in Objective-C there are two main root classes: NSObject and NSProxy. There are other roots (mainly ... -case where it's necessary? See Question&Answers more detail:os...

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

0 votes

488 views

1 answer

objective c - Pragma to explicitly enable ARC?

Is there a #pragma (or otherwise some construct) to explicitly enable automatic reference counting (ARC) in an ... memory. 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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409 views

1 answer

objective c - How we can set the Light Content style of Status Bar in iOS 9 for whole application?

I want to apply Light Content style to the whole application. Following method is deprecated in iOS 9 without ... should have the same 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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495 views

1 answer

objective c - How to find what day of the week for any given date using Cocoa

I'm trying to figure out what day (i.e. Monday, Friday...) of any given date (i.e. Jun 27th, 2009) 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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541 views

1 answer

objective c - Formatting seconds into hh:ii:ss

I have app that is a basic timer. It tracks the number of seconds the app has run. I want to convert it so the ... for the rest of the time. MS See Question&Answers more detail:os...

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

0 votes

428 views

1 answer

objective c - Is it possible to have a "#pragma mark" hierarchy?

I use #pragma mark - Description frequently to organize my methods in Xcode. However, I find that sometimes ... aPrivateMethod Is this possible? See Question&Answers more detail:os...

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

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504 views

1 answer

objective c - Sprite Kit change anchorpoint but keep physicsbody centered

I have a lot of different sprite nodes with a physicsbody the same size as the object. For positioning I ... have so many different objects. See Question&Answers more detail:os...

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

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500 views

1 answer

objective c - XCode deployment error: 'NSInvalidArgumentException', Could not find a storyboard named 'MainStoryboard'

Like many of the prior 'MainStoryboard missing in NSBundle' questions, I've got the same prompt but have found ... works. How should I proceed? See Question&Answers more detail:os...

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

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