Recent questions tagged objective

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objective c - Reading text file with NSString:stringWithContentsOfFile?

Reading text file with NSString:stringWithContentsOfFile? NSString *txtFilePath = [[NSBundle mainBundle] pathForResource:@"help" ... 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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523 views

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objective c - UITextView with text less than 10 characters hangs iOS 9

Starting from iOS 9 (I used Xcode 7.0 beta 6 (7A192o)), an Objective-C app with UITextView will hang ... Is anyone also encountering this one?? 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 - How safe is information contained within iPhone app compiled code?

I was discussing this with some friends and we began to wonder about this. Could someone gain access to URLs or ... -API key and secret values See Question&Answers more detail:os...

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

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objective c - How to mix Qt, C++ and Obj-C/Cocoa

I have a pure C++/Qt project on a Mac, but I now find that I need to call a few methods only available ... i doing wrong in the example above? See Question&Answers more detail:os...

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

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568 views

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objective c - NSNotificationCenter vs delegation - which is faster?

I have read a lot about the pros and cons of each , and i know delegates are usually for one listener, and ... , or there is no relation ? See Question&Answers more detail:os...

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

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679 views

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objective c - Specify images for iPad in Xcode like @2x for iPhone 4

I have upgraded my current target to iPad and made a universal app and the time for adjusting my iphone ... and set the frame programmatically? See Question&Answers more detail:os...

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

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721 views

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objective c - How do I redirect all errors, including uncaught exceptions, NSLog calls, and other logs, to a log file on Mac OS X?

I am attempting to find a logging framework for a Cocoa application, written in ObjC. What I've attempted so far: ... using your debugger!!!"). See Question&Answers more detail:os...

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

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499 views

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objective c - How do you implement NSPageController to navigate through a webView's history

I have a webView-based app, but I want the user to be able to navigate it with swiping on the trackpad and magic ... 10.8 [webView goBack]; } } See Question&Answers more detail:os...

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

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552 views

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objective c - Block gets released whilst in NSDictionary (ARC)

I'm trying to retain a reference to a Block that's been passed in to my class by a method, to call ... and it was never being stored. See Question&Answers more detail:os...

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

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633 views

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objective c - UIPageViewController - how Can I jump to a particular page number?

I have spent almost 8 hours finding out how to jump to a particular page number in UIPageViewController... ... UIPageViewController.... ??? See Question&Answers more detail:os...

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

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566 views

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objective c - Default keyboard is not coming when Barcode Scanner Device is Connected by Bluetooth in IOS

I am facing issue with keyboard when barcode scanner device is connected using bluetooth. Flow: 1) I have turned ... . 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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744 views

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objective c - Is self.iVar necessary for strong properties with ARC?

If I declare a property strong, like so: @property (strong, nonatomic) UIView *iVar; When I'm setting it, ... confused on the above questions. See Question&Answers more detail:os...

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

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667 views

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objective c - iOS - Double tap on uibutton

I have a button and I'm testing the taps on it, with one tap it change a background color, with two ... button it works perfectly. 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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738 views

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objective c - ViewForAnnotation is not being called

I am trying to make a map, where I can see my current location, and see what the street is called. so ... should be purple of nothing at all See Question&Answers more detail:os...

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

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809 views

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objective c - MFMailComposeViewController throws an error only in iOS 9

I can't get MFMailComposeViewController to open without throwing a fatal error in iOS 9 Simulator. The same code ( ... of this error. 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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776 views

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objective c - what's the difference between NSManagedObjectContext reset and rollback?

The documentation says: - (void)reset Returns the receiver to its base state. Discussion All the receiver's ... does -reset actually do? See Question&Answers more detail:os...

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

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542 views

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objective c - Why isn't there Xcode for Windows?

Why can't Xcode be hacked to be able to run on Windows? Does Xcode have another programming methods? Also, ... not available in Windows? 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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855 views

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objective c - iOS 9 supportedInterfaceOrientations not working

I have a UIViewController with the following code: - (BOOL) shouldAutorotate { return NO; } -(NSUInteger) ... 's the issue 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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654 views

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objective c - How to override a superclass' property with more specific types?

The Scenario I have a situation where a base class called AbstractRequest has a delegate property of type id ... , is purely coincidental. See Question&Answers more detail:os...

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

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733 views

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objective c - Storyboard and custom init

I recently tried working with the MainStoryboard.storyboard within Xcode and so far It's going pretty good and I'm ... data; } return self; } See Question&Answers more detail:os...

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

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593 views

1 answer

objective c - Using NSLog for debugging

I have the following code snippet in my Xcode: NSString *digit [[sender titlelabel] text]; NSLog([digit]); ... does the message actually mean? See Question&Answers more detail:os...

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

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729 views

1 answer

objective c - How to use images asset catalog in cocoapod library for iOS

I have a cocoapod library which contains assets in 2 formats: a .storyboard XCode asset catalog .xcassets (with ... into any app? 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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383 views

1 answer

objective c - duplicate symbols for architectures in Xcode

Here is the error message I receive when compiling ... Ld /Users/ilia3546/Library/Developer/Xcode/DerivedData/ ... user quits the application and it begins the transition to...

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

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898 views

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objective c - Casting a CFDictionaryRef to NSDictionary?

I have the code (stripped down): CFDictionaryRef *currentListingRef; //declare currentListingRef here NSDictionary * ... to an NSDictionary? See Question&Answers more detail:os...

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

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521 views

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objective c - duplicate symbol _OBJC_METACLASS_$_ClassName

I am trying to run my cocos2d application and facing this error, as I have recently upgraded my sdk to ... /Objects-normal/i386/MenuScene.o See Question&Answers more detail:os...

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

0 votes

557 views

1 answer

objective c - Calculate distance between two locations using google map in iphone

I just want to calculate distance between two location . In which user can enter both the location's ... CLLocation using these addresses ? See Question&Answers more detail:os...

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

0 votes

494 views

1 answer

objective c - post link using facebook sdk on iphone

I have the demo facebook app and without any modification this is the code: SBJSON *jsonWriter = [[SBJSON new] ... app using the facebook sdk. See Question&Answers more detail:os...

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

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574 views

1 answer

objective c - iOS8 and iOS7 Push Notification Payload

Since iOS8 came up with interactive notification, is there any significant changes to make Payload to send push ... lower versions of iOS? See Question&Answers more detail:os...

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

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