Recent questions tagged objective

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objective c - How can I create my own methods which take a block as an argument and which I can call later?

How can I create my own methods which take a block as an argument and which I can call later? I have tried ... NSLog(@"inside creator"); } @end See Question&Answers more detail:os...

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

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831 views

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objective c - How to change an iOS device volume programmatically?

Is there a way to change the device volume programmatically? maybe using audio session? See Question&Answers more detail:os...

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

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534 views

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objective c - NSMapTable and NSMutableDictionary differences

Is an NSMapTable the same as an NSMutableDictionary except for allowing keys to be pointers? Does it differ in memory management? See Question&Answers more detail:os...

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

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823 views

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objective c - iOS5 TabBar Fonts and Color

I have customized the TabBar appearance such UIImage *tabBackground = [[UIImage imageNamed:@"tab-bar-bg.png" ... unselected text colors? 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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529 views

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objective c - How can I get a list of all windows, currently on the screen, in swift?

How can I get a list of all windows, currently on the screen, in swift? (all examples are preceded ... I doing something fundamentally 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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635 views

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objective c - URL scheme for opening native calendar with specific date

I have found the sample code to open calendar from my app, but i can't open at a specific date. NSString* ... ideas what am i'm doing 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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405 views

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objective c - Why is there an NSInteger?

If NSInteger is just like a regular int then why does it exist and what is its purpose in being called NSInteger ... having a report for 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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420 views

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objective c - Xcode 4 adding dylib

I am trying to create and then add the dylib to a project. I created it by using the "Cocoa-Library" template ... error. What am I doing 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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objective c - How to evaluate the string equation in ios

Is there way to solve the string equations in ios ? For example Input: NSString * str =@"1+2"; Output: ... and get expected result! Please help! See Question&Answers more detail:os...

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

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336 views

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objective c - Why can't categories have instance variables?

I understand we can use associative references to invoke ivar-like behavior in categories. But what's the ... breaking whatever it breaks. See Question&Answers more detail:os...

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

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321 views

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objective c - CoreData - one-to-many modeled relationship comes out as one-to-one

I am new to Core Data modeling, and I am having a hard time understanding how one-to-many relationships ... Task? Thanks for any suggestions! See Question&Answers more detail:os...

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

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635 views

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objective c - Get ppi of iPhone / iPad / iPod Touch at runtime

Anyone know if there's a way to get the screen density (ppi) of the device at runtime? It'd be nice to not ... switches it up in the future... See Question&Answers more detail:os...

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

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316 views

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objective c - Automatically @synthesized properties in Xcode 4.4

From the Xcode 4.4 release notes: The compiler automatically calls @synthesize by default for unimplemented @properties ... typing so far)? See Question&Answers more detail:os...

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

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419 views

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objective c - NSLocalizedString with format

How would I use NSLocalizedString for this string: [NSString stringWithFormat:@"Is %@ still correct for %@ tap ... of items", nil)]; See Question&Answers more detail:os...

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

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347 views

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objective c - How to post images with text in facebook integration in Iphone sdk

Here Iam having a problem.Actually I implemented the facebook integration in my application and I need to post ... will be much 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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582 views

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objective c - Is there any function to retrieve the path associated with an inode?

I am writing a utility that walks a directory tree on Mac OS X (10.6 and higher) and tries to detect changes ... between a move and a delete. See Question&Answers more detail:os...

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

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379 views

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objective c - Pass all arguments of a method into NSLog

I print out something to the console using NSLog(). Is there a way to pass all the current method's ... out automatically. Is that 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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479 views

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objective c - iOS-8 and later - UITableView inside an UIAlertController

I know how to add any Custom UI inside UIAlertView by using accessoryView like UITableView but I am ... with clear understanding. See Question&Answers more detail:os...

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

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345 views

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objective c - Dynamically resize label in iOS 7

In iOS 6, I am using : CGSize labelSize = [self.text sizeWithFont:self.font constrainedToSize:size lineBreakMode:self ... I should be using? See Question&Answers more detail:os...

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

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466 views

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objective c - symbol(s) not found in XCode, Cocoa application

Though I've done some development in Java and and a little in C(++), I'm totally new to Apple's ... your own Objective C apps. Cheers! See Question&Answers more detail:os...

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

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348 views

1 answer

objective c - Consuming OSX mouse/trackpad events with an event tap

I'm trying to add an event trap to enable/disable event from my magic trackpad. I thought this would be ... than returning null should work). See Question&Answers more detail:os...

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

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303 views

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objective c - ObjC: How to compile static library that includes optional classes that depend on a third party library

I'm trying to find the best way to package a static library(lets call it Lib1) that includes an optional ... build that does not include ClassA 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 - how to get current location lat long in ios 8?

my issue is not get current location latitude and longitude in ios 8. i tried to set key in . ... .locationManager startUpdatingLocation]; } } See Question&Answers more detail:os...

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

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488 views

1 answer

objective c - Easy way to get size of folder (ObjC/Cocoa)?

Right now I'm using this code to get the size of a folder: NSArray *contents; NSEnumerator *enumerator; NSString ... size of a folder? 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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697 views

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objective c - How to use Accessibility with sandboxed app?

OS X have a nice feature such as Accessibility API, which allow to control some system elements and another ... Store together, but how? See Question&Answers more detail:os...

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

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385 views

1 answer

objective c - How to enable FinderSync Extension in macOS System Preferences

I am integrating FinderSync Extension in my Cocoa Application to show badges in files and folders. Look at ... Preference using second scenario? See Question&Answers more detail:os...

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

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284 views

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objective c - Receive remote control events without audio

Here is some background information, otherwise skip ahead to the question in bold. I am building an app and I would ... to what I need to know. See Question&Answers more detail:os...

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

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420 views

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objective c - Live Bytes vs Real Memory in Activity Monitor on iOS

I'm working on an iOS app that will create a lot of small objects and floats, and trying to get an idea for ... t grow to more than about 500KB. See Question&Answers more detail:os...

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

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