Recent questions tagged Cocoa

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cocoa - How to count the number of lines in an Objective-C string (NSString)?

I want to count the lines in an NSString in Objective-C. NSInteger lineNum = 0; NSString *string = @"abcde fghijk ... } Is there an easier way? See Question&Answers more detail:os...

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

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cocoa - NSWindowController windowDidLoad not called

I have a simple Cocoa app using a NSWindowController subclass. In the nib I have set: File Owner's class to my ... 't figure out what it is. See Question&Answers more detail:os...

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

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553 views

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cocoa touch - Showing UIBezierPath on view

In one of my methods i have this code: -(void)myMethod { UIBezierPath *circle = [UIBezierPath ... must be simple. 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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641 views

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cocoa touch - Can UIScrollView's deceleration rate be modified?

Since this question was originally asked, UIScrollView deceleration rate customization has been added via the decelerationRate ... to do 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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609 views

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cocoa - Get Certificates in Keychain

I've looked over the Security framework documentation but I can't seem to be able to find a way to get ... Are there methods to accomplish 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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803 views

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cocoa - Programmatically change Mac display brightness

How to change Mac display brightness from cocoa application? See Question&Answers more detail:os...

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

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717 views

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cocoa - Unique Identifier of a Mac?

On an iPhone I can use [[UIDevice currentDevice] uniqueIdentifier]; to get a string which identifies this device. Is ... . Can you 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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806 views

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cocoa - How to custom draw window title bar in Objective-C?

I'd like to customize the way I draw the window title bar on OS X. Specifically, I'd like to do ... provides, but neither seems appropriate. See Question&Answers more detail:os...

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

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686 views

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cocoa touch - Is there a way to capture the output of NSLog on an iPhone when not connected to a debugger?

I'm logging a bunch of data with NSLog(). Is there a way to capture the log data when my iPhone is not ... I go far away from my desk. See Question&Answers more detail:os...

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

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561 views

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cocoa touch - iPhone headphone jack - read in data?

I have a small device which connects to a battery powered monitor. When I turn the wheel on the device, the ... and isn't very straightforward. See Question&Answers more detail:os...

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

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671 views

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cocoa - NSLog 10b meaning?

Whenever I use NSLog(), it always shows this mysterious "10b" next to the process ID. I know that this is ... delme[38163:10b] Hello, World! See Question&Answers more detail:os...

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

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576 views

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cocoa - Maximum amount of objects in NSArray

What is the largest amount of objects I can put in my NSArray? See Question&Answers more detail:os...

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

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728 views

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cocoa touch - UITextView automatic scroll down

I have an UIView and I add a editable UITextView to it, UITextView *textView = [[UITextView alloc] initWithFrame: ... . Anybody got an idea? See Question&Answers more detail:os...

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

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607 views

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cocoa - Fast enumeration on an NSIndexSet

Can you fast enumerate a NSIndexSet? if not, what's the best way to enumerate the items in the set? See Question&Answers more detail:os...

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

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478 views

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cocoa - Hit Testing with CALayer using the alpha properties of the CALayer contents

I'm writing a game for Mac using Cocoa. I'm currently implementing hit testing and have founds that CALayer offers ... any way to do 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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454 views

1 answer

cocoa - Is releasing memory of Objective-c 2.0 properties required?

Something I have been wondering about properties for a while. When you are using properties, do you need ... @synthesize operation,link; @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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620 views

1 answer

cocoa - What are the new "iOS data protection APIs"?

If you Google "iphone data protection apis" you'll see a zillion hits based on press releases. If you check out ... for 3rd-party apps. TIA! See Question&Answers more detail:os...

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

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600 views

1 answer

cocoa - How to run an AppleScript from a sandboxed application on a Mac (OS X)

We are developing an application for the Mac App Store using Qt 5.2.0.Framework on MacOSX 10.9. Here is a ... is being delayed by this. 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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537 views

1 answer

cocoa - Swift: How to read standard output in a child process without waiting for process to finish

I have an external console application (on OS X) that emits a sequence of integers from 1 to 100 to ... the child process has completed. See Question&Answers more detail:os...

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

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464 views

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cocoa touch - iPhone - How do I know if the vibrate is on or off for iOS?

Do you know how I may know if the iPhone is on vibrate mode ? I don't find anything about this on the Web.. ... or not (vibrate on). Thank you. 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

1 answer

cocoa touch - Human friendly date descriptions with NSDate on iOS

I want to display NSDates in a "human-friendly way", such as "last week", or "a few days ago". ... is there already some library 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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488 views

1 answer

cocoa - NSOperation wait until asynchronous block executes

i need to put asynchronous operations into an operation queue, however, they need to execute on after the other 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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1.3k views

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cocoa - How to resize NSTextView according to its content?

I am trying to set an attributed string within NSTextView. I want to increase its height based on its content, ... not get any success :( 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

1 answer

cocoa touch - How can I retrieve the UDID on iOS?

I was wondering if it was possible to find out the UDID of the user's iPhone. Can someone shed some light? See Question&Answers more detail:os...

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

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662 views

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cocoa touch - NSAttributedString and Links on iOS

I am trying to add a hyperlink to certain parts of my text which is being handled and drawn ... NSMutableAttributedString and CoreText? 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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585 views

1 answer

cocoa - Draw grid lines in NSTableView only for populated rows?

How can I draw grid lines in an NSTableView only for rows that are populated? When I set the grid style mask to ... of sample code to do 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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627 views

1 answer

cocoa touch - Which Event When i close app in iOS?

I need to implement event when i close my app in iOS like following pic. I want to catch that event when i close ... . Which event i need to 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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614 views

1 answer

cocoa - NSTableView and drag and drop from Finder

I'm trying to implement drag and drop from the Finder into an NSTableView of my app. The setup uses an NSTableView ... . Where am I going 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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