Recent questions tagged objective

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objective c - iPhone development: pointer being freed was not allocated

i got this message from the debugger: Pixture(1257,0xa0610500) malloc: *** error for object 0x21a8000: pointer ... ); return blendedImage; } See Question&Answers more detail:os...

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

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objective c - Apple Mach-O linker and multiple "undefined symbols" error using OpenCV

I am currently a real beginner in Objective C, and I am developing an app using the framework OpenCV. I am ... an objective C++ projet ? See Question&Answers more detail:os...

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

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objective c - iOS6 UICollectionView and UIPageControl - How to get visible cell?

While studying iOS6 new features I got a question about UICollectionView. I am currently testing it with Flow ... guys can understand me! See Question&Answers more detail:os...

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

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objective c - How to reliably detect if an external keyboard is connected on iOS 9?

Previous to iOS 9, the most reliable method of determining whether an external keyboard is connected was to listen for ... be used with iOS 9? See Question&Answers more detail:os...

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

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objective c - dispatch_sync on main queue hangs in unit test

I was having some trouble unit testing some grand central dispatch code with the built in Xcode unit testing framework ... causes this to hang? See Question&Answers more detail:os...

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

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384 views

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objective c - UIActivityViewController for Facebook not Showing Default Text

I am using a UIActivityViewController which provides some default text and a link. With all social mediums (sms ... com/docs/apps/review/prefill See Question&Answers more detail:os...

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

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objective c - Add/Delete UITableViewCell with animation?

I know this might sound like a dumb question, but I have looked every where. How can I do this? I ... post some code samples. Thanks! Coulton See Question&Answers more detail:os...

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

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objective c - Check whether or not the current thread is the main thread

Is there any way to check whether or not the current thread is the main thread in Objective-C? I want to do ... from other thread!"); } } See Question&Answers more detail:os...

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

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objective c - How to make a smooth, rounded, volume-like OS X window with NSVisualEffectView?

I'm currently trying to make a window that looks like the Volume OS X window: To make this, I have my ... to make the corners smoother? Thanks See Question&Answers more detail:os...

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

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objective c - What is Protocol Oriented Programming in Swift? What added value does it bring?

From Apple's own website: "At the heart of Swift's design are two incredibly powerful ideas: protocol- ... answers here are somewhat abstract. See Question&Answers more detail:os...

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

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427 views

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objective c - iOS7 excessive navigationbar button padding

I'm experiencing excessive UIBarButtonItem padding/spacing when using the LeftBarItems and RightBarItems (see image below). ... 's causing 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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objective c - Current view controller from AppDelegate?

Is there a way to get the current view controller from the AppDelegate? I know there is rootViewController, but that's not what I'm looking for. See Question&Answers more detail:os...

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

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376 views

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objective c - Where's the iPhone MIME type database?

I have a program for the iPhone that is supposed to be doing intelligent things (picking out appropriate icons for ... phone. Does this exist? See Question&Answers more detail:os...

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

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502 views

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objective c - On iOS8, displaying my app in landscape mode will hide the status bar but on iOS 7 the status bar is displayed on both orientations

I want the status bar to be displayed in both orientations in iOS 8; it's being displayed properly in iOS 7. ... Why is iOS 8 doing 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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524 views

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objective c - Create UITextRange from NSRange

I need to find the pixel-frame for different ranges in a textview. I'm using the - (CGRect)firstRectForRange:( ... I need. Thanks in advance. See Question&Answers more detail:os...

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

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323 views

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objective c - How to customize UIActionSheet? iOS

Is it possible to create an ActionSheet that have a label between two buttons like this image? See Question&Answers more detail:os...

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

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586 views

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objective c - I want to allow invalid SSL certificates with AFNetworking

I want to allow invalid SSL certificates. My main code is below: myClient = [[MyClient alloc] init]; [myClient ... issues/189 Please help me... See Question&Answers more detail:os...

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

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574 views

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objective c - How to mimic Keyboard animation on iOS 7 to add "Done" button to numeric keyboard?

I had been doing something like this to mimic the keyboard animation on older version of iOS. CGRect ... the Keyboard display animation. See Question&Answers more detail:os...

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

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391 views

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objective c - Check if object is Class type

I have a method that receives a NSArray of Class objects and I need to check if they all are Class type ... be true for the NSObject check See Question&Answers more detail:os...

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

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451 views

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objective c - Chaining Core Animation animations

Which is the most elegant and modular way to chain animation in a Core Animation context? I mean to do animations ... doesn't seem to work.. See Question&Answers more detail:os...

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

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451 views

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objective c - iOS 7 - Keyboard animation

I'm trying to understand the new keyboard animation in iOS 7.0 on the iPhone 5 Simulator. I want to resize ... unknown value, what should I do? See Question&Answers more detail:os...

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

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492 views

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objective c - How to split string into substrings on iOS?

I received an NSString from the server. Now I want to split it into the substring which I need. How to ... 10 characters from the 6th character. See Question&Answers more detail:os...

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

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819 views

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objective c - How can I get rid of an "unused variable" warning in Xcode?

I understand exactly why unused variable warnings occur. I don't want to suppress them in general, because they are ... if such a thing exists. See Question&Answers more detail:os...

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

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348 views

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objective c - Extending Functionality of Magic Mouse: Do I Need a kext?

I recently purchased a Magic Mouse. It is fantastic and full of potential. Unfortunately, it is seriously ... Thanks in advance! -Sastira 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

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objective c - Core Data unique attributes

Is it possible to make a Core Data attribute unique, i.e. no two MyEntity objects can have the same myAttribute? I ... the iPhone 3.1.2 SDK. See Question&Answers more detail:os...

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

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546 views

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objective c - Passing parameters to the method called by a NSTimer

How can I pass a parameter to the method called by a NSTimer? My timer looks like this: [NSTimer ... fine thanks for the help. See Question&Answers more detail:os...

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

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377 views

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objective c - how to remove subviews from scrollview?

how do i remove all subviews from my scrollview... i have a uiview and a button above it in the ... ] objectAtIndex:0] removeFromSuperview]; } See Question&Answers more detail:os...

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

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479 views

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objective c - Facebook iOS8 SDK build module error for FBSDKCoreKit

I am trying to add the Facebook SDK to my iOS 8 Objective-C app in Xcode. I did the install according to ... has seemed missing. I'm stumped. See Question&Answers more detail:os...

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

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