Recent questions tagged objective

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objective c - UITabBarController Rotation Issues in ios 6

Ack! I had my tabbar rotation issues resolved finally in iOS 5, but iOS 6 and xcode seem to have broken things. ... it for a while Thanks, Zack See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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623 views

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objective c - How can I get the iOS device CPU architecture in runtime

Is there a way to identify the iOS device CPU architecture in runtime? Thank you. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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345 views

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objective c - Saving a NSArray

I would like to save an NSArray either as a file or possibly use user defaults. Here's what I am hoping to do. ... if so how should I do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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332 views

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objective c - iOS: Compare two NSDate-s without time portion

I want to compare two dates: date1 and date2 2011-06-06 12:59:48.994 Project[419:707] firstDate:2011-06-06 ... in the NSLog null values, why?? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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471 views

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objective c - Alternate Icon in iOS 10.3

I have the info on how to set up alternate icons in iOS 10.3 adding the key in the Info.plist. However, ... s the rule on the alternate ones? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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307 views

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objective c - xcode 6 IB_DESIGNABLE- not loading resources from bundle in Interface builder

I am trying to make a custom control that updates live in Interface Builder using the new IB_DESIGNABLE option ... drawInRect:self.bounds]; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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354 views

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objective c - How to know exactly when a UIScrollView's scrolling has stopped?

In short, I need to know exactly when the scrollview stopped scrolling. By 'stopped scrolling', I mean the ... the speed to something random. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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878 views

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objective c - Default value of BOOL

What is the default value of a BOOL variable in Objective-C? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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642 views

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objective c - NSString - Convert to pure alphabet only (i.e. remove accents+punctuation)

I'm trying to compare names without any punctuation, spaces, accents etc. At the moment I am doing the ... this more efficient. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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objective c - myView.frame.origin.x = value; does not work - But why?

I know that I can't use this: myView.frame.origin.x = 25.0; and that I have to use this instead: ... required as left operand of assignment". See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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401 views

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objective c - iOS storyboard passing data navigationViewController

I have problem with proper passing data between view's but not in standard way. Picture describing ... have independent Navigation Controllers? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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514 views

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objective c - How to correctly present a popover from a UITableViewCell with UIPopoverArrowDirectionRight or UIPopoverArrowDirectionLeft

I always try to present a popover from a cell inside a tableView this way: [myPopover presentPopoverFromRect:cell ... detailView of a splitView. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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433 views

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objective c - Find which child view was tapped when using UITapGestureRecognizer

How do I know on which of the the child views an event occurred when using UIGestureRecognizers? According to the ... will be the parent view. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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372 views

1 answer

objective c - Drawing incrementally in a UIView (iPhone)

As far as I have understood so far, every time I draw something in the drawRect: of a UIView, the ... (context); } Thanks everyone! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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430 views

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objective c - Xcode: Delete line hot-key

I'm looking for a way to map some hot-keys to "delete the line that my cursor is on" in Xcode. I ... the same thing if possible. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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417 views

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objective c - Why is this dispatch_sync() call freezing?

I'm using the Kiwi testing framework to test an authentication method in my app. The test freezes at a call to ... , if anyone has any hints. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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445 views

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objective c - Keep iphone active while running program

how to set iPhone device to stay active ( to not lock ) while my app is running ? Any idea See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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285 views

1 answer

objective c - Why do all backgrounds disappear on UITableViewCell select?

My current project's UITableViewCell behavior is baffling me. I have a fairly straightforward subclass of UITableViewCell. ... I correct this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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338 views

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objective c - iOS8 - constraints ambiguously suggest a height of zero

Has anyone got any idea how to debug this? Warning once only: Detected a case where constraints ambiguously suggest a ... seem to be happy... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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403 views

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objective c - How to implement an accordion view for an iPhone SDK app?

Has anyone seen an implementation of an "accordion" (maybe called "animated outline") view for the iPhone? I found ... to know it's possible! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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272 views

1 answer

objective c - UIWebView dones't resize correctly when orientation change?

I have add a webview,a titleLabel and a coverflowView on a viewcontroller's view as its subviews, I want it to ... //透明 [super viewDidLoad]; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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482 views

1 answer

objective c - Code sample for capturing audio from a Mac in Cocoa and saving to file?

I'm due to work on a small application that captures audio from the Mac's Audio Queue and needs to save it ... , agnostic of the input source. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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291 views

1 answer

objective c - Animate infinite scrolling of an image in a seamless loop

Currently I have an image of clouds of 2048x435 that scrolls across a Landscaped oriented UIImageView of 1024x435 ... [super viewDidLoad]; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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399 views

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objective c - Making some code only run once

I have some code that I would like to run only once in my MainViewController. It should run every time the user starts ... = 1; } } Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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405 views

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objective c - In Cocoa do you prefer NSInteger or int, and why?

NSInteger/NSUInteger are Cocoa-defined replacements for the regular built-in types. Is there any benefit to using the ... / 64-bit platforms? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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604 views

1 answer

objective c - ios 11 UITabBar UITabBarItem positioning issue

I have built my app using new Xcode 9 beta for ios 11. I have found an issue with UITabBar where items are ... the left most corner of an iPad. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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436 views

1 answer

objective c - Finding file's size

In my iPhone app I am using the following code to find a file's size. Even though the file exists, ... int fileSize = [fileAttributes fileSize]; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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495 views

1 answer

objective c - How to identify previous view controller in navigation stack

I have 2 seperate navigationcontrollers, one with RootViewController A and the other with RootViewController B. I am able to ... to A or B? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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