Recent questions tagged objective

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objective c - Recording custom overlay on iPhone

I'm interested in recording a video with a custom overlay which would end up in the video itself. They could ... any iPhone devices/SDK ? 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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380 views

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objective c - All exception break point is stopping for no reason on simulator

This is very annoying, every time I'm trying to debug on the simulator with "all exception break point", app stops for ... ) + 178 at main.m:17 See Question&Answers more detail:os...

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

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503 views

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objective c - what is difference between alloc and allocWithZone:?

From forum discussion , seem like that the big difference is performance factor, allocWithZone: will alloc memory ... allocWithZone: ? 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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506 views

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objective c - Reachability airplane mode (3G) vs. Wifi

I know the Reachability code will provide if the phone has access to Wifi or 3G network. However, if the ... Help would greatly be 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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518 views

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objective c - How to play a video with MPMoviePlayerController

I'm using this code to play a video streaming from the apple site - (IBAction)playMovie:(UIButton *)sender { ... How can I solve this error? See Question&Answers more detail:os...

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

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397 views

1 answer

objective c - How to reorder MKMapView annotations array

I'd like to reorder the array of annotations shown on a map in order to create a next/prev button ... reorder the MKMapKit annotations array? See Question&Answers more detail:os...

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

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459 views

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objective c - Dealloc Not Running When Dismissing Modal View from Block

Strange one here, dealloc is not being called when dismissed from inside a block. Code: [[NSNotificationCenter ... make any difference. 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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633 views

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objective c - How to convert a classic HFS path into a POSIX path

I am reading old files that still use HFS style paths, such as VolumeName:Folder:File. I need to convert ... solution for the inverse operation. See Question&Answers more detail:os...

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

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487 views

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objective c - Set NSAttributedString to UITextView

I want to set NSAttributedString to UITextView; how do I go about doing that? See Question&Answers more detail:os...

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

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819 views

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objective c - NSTask launch path not accessible

I am using the following code in my Cocoa project to call a script I made. The script is in the same ... [5023:a0f] launch path not accessible See Question&Answers more detail:os...

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

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586 views

1 answer

objective c - How can I get all supported screen resolutions on mac OSX Swift

I want a code that 1)grabs my current screen resolution, (solved). For example : to get current screen display ... C code will be also useful See Question&Answers more detail:os...

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

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341 views

1 answer

objective c - Check whether time falls between two time iOS

I have two times let say 8.40am and 4.00pm, What i want to do is, want to check whether current time falls ... "Sorry, we are closed!"); } See Question&Answers more detail:os...

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

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459 views

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objective c - How to properly handle CF objects created at the beginning of the program and deleted at the end

I put I declared @property (nonatomic) ABAddressBookRef addressBook; as the property of the class extension -(void) ... want to add or remove See Question&Answers more detail:os...

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

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631 views

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objective c - How to set the date and time programmatically in iOS

I have a requirement in which we need to programmatically set the date and time (or sync the time) from a ... which says we cannot 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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501 views

1 answer

objective c - XCode dylib looking in /usr/lib

I created a dylib in XCode. I set the installtion directory to @rpath. Then I created a test project in which ... that makes any sense)? Thanks! See Question&Answers more detail:os...

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

0 votes

423 views

1 answer

objective c - ObjectiveC: if (obj) {...} AND if (obj != nil) {...}, which is better?

I've seen a lot of ObjC code which do: obj = [[SomeObject alloc] init]; if (obj) { /// ... } but as I ... (or NULL) happen to be defined as 0? See Question&Answers more detail:os...

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

0 votes

427 views

1 answer

objective c - Keep getting nil from dequeueReusableCellWithIdentifier?

I've created a prototype cell with identifier "mainViewTableCell" in storyboard file and connected the main table view ... you all in advance. See Question&Answers more detail:os...

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

0 votes

803 views

1 answer

objective c - How can I programmatically get the Bluetooth MAC address of an iPhone?

I'm trying to do some proximity detection of iPhones but I need to get their Bluetooth MAC address programmatically ... paired with the iPhone. See Question&Answers more detail:os...

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

0 votes

442 views

1 answer

objective c - iOS 8 [UIApplication sharedApplication].scheduledLocalNotifications empty

i'm trying to update my app to iOS 8. In a function i schedule a local notification (i've already checked ... Could someone help me? some ideas? See Question&Answers more detail:os...

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

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564 views

1 answer

objective c - Google Maps iOS SDK: How do I get accurate latitude and longitude coordinates from a camera's visibleRegion?

EDIT: This is now a confirmed bug with this SDK I'm using version 1.1.1.2311 of the Google Maps for iOS SDK, ... me figure out which one it is? See Question&Answers more detail:os...

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

0 votes

694 views

1 answer

objective c - NSMutableAttributedStrings - objectAtIndex:effectiveRange:: Out of bounds

I'm trying to add some fancy text to a label, but I've run into some problems with the NSMutableAttributedString ... What the label looks like: See Question&Answers more detail:os...

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

0 votes

615 views

1 answer

objective c - Detect permission of media library ios

In my app, I want to detect that if user give the permission to his media library or not. User may ... can change Media Library permissions. See Question&Answers more detail:os...

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

0 votes

564 views

1 answer

objective c - Customizing the iPhone keyboard

Is there a way to modify or make your own iPhone keyboard so that you can type in unsupported languages? See Question&Answers more detail:os...

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

0 votes

592 views

1 answer

objective c - JavaScript alert() not working in embedded WebView

When embedding WebView in an application and loading html-pages in it, JavaScripts alert()/confirm()/etc. do not work. ... () et al, but how? See Question&Answers more detail:os...

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

0 votes

553 views

1 answer

objective c - NSTextField - White text on black background, but black cursor

I've setup an NSTextField with text color as white, and the background color as (black despite not rendering the ... like it cannot be edited. See Question&Answers more detail:os...

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

0 votes

592 views

1 answer

objective c - How to stop a video in AVPlayer?

I am using this code to play video file using avplayer how do I stop it [videoView setHidden:NO]; NSArray ... //[self.videoPlayer release]; See Question&Answers more detail:os...

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

0 votes

397 views

1 answer

objective c - How to set image to UIImage

How can I set image to UIImage object. For example: UIImage *img = [[UIImage alloc] init]; [img setImage: ... in viewDidLoad method. Any ideas? See Question&Answers more detail:os...

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

0 votes

502 views

1 answer

objective c - Why use id when we can just use NSObject?

I know that when we want to create an unknown value object we use id. However, I'm curious that why did ... Does anyone know why? 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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