Recent questions tagged objective

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objective c - How to set pitch of an audio file or recorded audio file in iphone sdk?

I am recoding a file or I have audio file I want to change the pitch and play the audio file. How can I ... of this. Thank you, Madan Mohan. See Question&Answers more detail:os...

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

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684 views

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objective c - ios - convert .m4a to .mp3 file programmatically

Here i have m4a format audio, I need to convert into mp3 format. for this I used the code as - (void) ... m4a to mp3 format.kindly help 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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526 views

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objective c - MBProgressHUD with NSURLConnection

I was trying to use MBProgressHUD with NSURLConnection. The example in Demo project of MBProgressHUD reports: - (IBAction) ... how to 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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446 views

1 answer

objective c - Huge images in iOS app without CATiledLayer?

I have an image at about 7000x6000px. I need this to be in a scrollview/imageView in my app, however this ... have any other solutions? 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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535 views

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objective c - Using OpenCV, how can I detect text orientation before performing OCR?

I'm using OpenCV within an iOS application. I'd like to perform OCR on some text, but I first need to determine ... How do I do that in OpenCV? 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 SDK: accessing indexed color PNG images

I'm interested in loading indexed-color PNG images in my iPhone application. Once they're loaded, I want to access ... me, 100 points are yours! 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 - Global events, the Mac App Store, and the sandbox

I'm working on an app where using global key-down events will be a requirement for its operation. Additionally, ... has access to global events? 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 - Return CATransform3D to map quadrilateral to quadrilateral

I'm trying to derive a CATransform3D that will map a quad with 4 corner points to another quad with 4 ... calculate the proper matrix, though. See Question&Answers more detail:os...

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

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454 views

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objective c - NSTableView Row Height based on NSStrings

Basically, I have an NSTableView with 1 collumn, and I'm inserting long strings into each row. However, not all ... for any help 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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436 views

1 answer

objective c - How to pass an argument to a method called in a NSTimer

I have a timer calling a method but this method takes one paramether: theTimer = [NSTimer scheduledTimerWithTimeInterval ... I use Invocation? See Question&Answers more detail:os...

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

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648 views

1 answer

objective c - iOS: Accessing device hardware audio volume control

I have implemented this streamer(https://github.com/DigitalDJ/AudioStreamer) inside my app and it runs fantastic, ... , any help is appreciated See Question&Answers more detail:os...

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

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569 views

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objective c - iPhone Accelerate Framework FFT vs Matlab FFT

I do not have much math background but part of the project I am working on requires the FFT of a single ... 14.000000 15.000000 16.000000 See Question&Answers more detail:os...

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

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766 views

1 answer

objective c - AEC ( Echo Cancellation Support ) in OSX Using AudioQueue

I am developing VOIP Application on OSX and iOS and will be using AudioQueue for Audio flow, what want to ... with Speex or any other library See Question&Answers more detail:os...

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

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387 views

1 answer

objective c - iOS 6.0+ autorotation for youtube embedded video

I want to only support vertical orientation throughout all the view controllers of my iOS app. However, I ... be greatly appreciated. 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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390 views

1 answer

objective c - Programming iOS: clarifications about Root View Controller

Through this question I would like to know if I understand well the notion of Root View ... through initWithRootViewController method? See Question&Answers more detail:os...

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

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429 views

1 answer

objective c - Capture Wi-Fi network changing event in iOS

Is there any way to capture the event occurs when a user connects to a particular WiFi network in iOS app. ... event of the connected SSID. See Question&Answers more detail:os...

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

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490 views

1 answer

objective c - Build Cocoa application Bundle with private dylib/framework

I use xcode 4 to build a cocoa application with a private dylib/framework. In my development Mac, I put the ... : /usr/local/lib/mylib.dylib See Question&Answers more detail:os...

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

0 votes

600 views

1 answer

objective c - Assertion failure in -[UITableView layoutSublayersOfLayer:]

I want to use an UISearchDisplayController on UIViewController, that includes an UITableView. I use Autolayout. When i try ... has no rows... See Question&Answers more detail:os...

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

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431 views

1 answer

objective c - NSArray: Remove objects with duplicate properties

I have an NSMutableArray that contains a few custom objects. Two of the objects have the same properties such as ... can I remove the duplicate? See Question&Answers more detail:os...

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

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410 views

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objective c - How do I collect key input in a video-game style Cocoa app?

I'm hacking on a simple Cocoa app to make blocks move around the screen like a video game. I need to detect key ... , I need to get arrow keys. See Question&Answers more detail:os...

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

0 votes

632 views

1 answer

objective c - Set AVAudioEngine Input and Output Devices

I've been playing around with Apple's shiny new AVFoundation library, but so far I've unable to set the ... have any experience with this? See Question&Answers more detail:os...

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

0 votes

468 views

1 answer

objective c - Google Sign In not working on iOS 10 Beta 7 with Xcode 8 beta 6

I have an app in the app store which worked perfectly fine till first few betas of iOS 10 (i am not exactly ... on iPhone 6s and iPhone 5s. See Question&Answers more detail:os...

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

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360 views

1 answer

objective c - Is there any way to list all swizzled methods in an iOS app?

I'm essentially looking for a way to detect when/what third party libraries swizzle. I recently ran into a ... first person to need 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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469 views

1 answer

objective c - How to update code using enabledRemoteNotificationTypes because it is "not supported in iOS 8"?

this is the code i used for the RemoteNotificationType: NSUInteger rntypes = [[UIApplication sharedApplication] ... me the solution. See Question&Answers more detail:os...

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

0 votes

566 views

1 answer

objective c - Why doesn't UIView.exclusiveTouch work?

In one of my iPhone projects, I have three views that you can move around by touching and dragging. However, I ... 'm missing here? Thanks, Eli See Question&Answers more detail:os...

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

0 votes

963 views

1 answer

objective c - How to detect a tap gesture in subviews

Quick question: how do i detect if a tap gesture recognizer is within a subview of the view it is added to? ... detect that it has been tapped? See Question&Answers more detail:os...

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

0 votes

412 views

1 answer

objective c - iOS HTTPS requests 101

NSURLConnection/CFURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9813) Very, very frustrating! I've been pulling ... a Node.js server See Question&Answers more detail:os...

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

0 votes

612 views

1 answer

objective c - UITableViewCell content overlaps delete button when in editing mode in iOS7

I am creating a UITableView with custom UITableViewCells. iOS 7's new delete button is causing some problems with the ... how can I fix 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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