Recent questions tagged objective

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objective c - How to add TextView 320*460 in UIAlertView iPhone

I am showing EULA at the start with UIAlertView having Accept button. I have successfully followed answer on Problem ... way. 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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objective c - headphone plug-in plug-out event when audio route doesn't change - iOS

I'm working on iPad. I would like to detect when user plug-out headphone. First I used a listener on the ... } Hope it will help someone ! 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 - iOS framework with dependencies

I have created two iOS .frameworks they both compile perfectly my structure is as follows: iPadProject - framework1 ... with "signal SIGABRT" 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 - iOS - open photo from photo album in my app

I would like to let users browse photos in their photo albums, tap the action button, and share/open selected ... use to achieve this behavior? 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 - UISearchBar Search table row with text, subtext and image

I've noticed that in order to do a search of a table, a copy of that data must be inserted to a ... subtext and image in that particular cell. 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 - JSON array for picker view iPhone

I am getting this data from JSON web services List ARRAY: ( { assets = ( { identity = 34DL3611; systemId = ... (@"GroupSystemID: %@", systemid); 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 - Why is NSDateFormatter returning nil?

To be more precise this is not working for me: NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [ ... ; prevday is returning 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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objective c - Text in file should not be overwritten

I am using the following code to write in a file. fileName = [[NSBundle mainBundle] pathForResource: @"user" ... the problem with the code? 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 - Why not enforce strict singleton application delegate object to use in NIBs?

I just ran myself round in circles, all coming down to having instantiated an app delegate object in a secondary ... same as [NSApp delegate] 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 - Manage the number of active tasks in a background NSURLSession

It seems that when you enqueue too many tasks (say, hundreds) on a background NSURLSession, it doesn't work well ... small fixed number, say 10? 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 - `unrecognized selector sent to instance <OBJ_ADR>`after sending `dismissViewControllerAnimated:completion` to a UIViewController

Lots of similar questions but non with a solution that works in my case. I try to write a simple ... selector sent to instance 0x6c3adf0 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 - Create an URI for an application

I want to have an URI for my app. For example, if my app's name is "GetIt": getit:// Is there an easy way to create 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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objective c - Pressing UIButton results in Unrecognized Selector error

I have a button in my UIView that is created like so: UIBarButtonItem *editButton = [[UIBarButtonItem alloc] ... ' Why is this happening? 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 - Getting the Leftmost Bit

I have a 5 bit integer that I'm working with. Is there a native function in Objective-C that will let me ... return 8 or the position. 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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objective c - Calling a Method on Watchkit

I attended to a watchkit hackathon yesterday and I had some problems regarding calling a method on an NSObject class ... The error I get 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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objective c - iOS Dropbox SDK - Cannot upload or get metadata

This app used to work properly, but now I cannot upload a file or get metadata. Whenever I try to upload ... ] linkFromController: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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objective c - Cydia App Documents Folder Not Created

I have been working on a Core Data iOS app that works perfectly through Apple's "channels" - iOS simulator & ... I created? 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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objective c - the effect on retain count of performSelector:withObject:afterDelay:inModes

A simple program: -(void)doSomething { NSLog(@"self rc=%d", [self retainCount]); [self performSelector:@selector(doMe ... to and stay at 2? 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 - CloudKit Batch Fetches?

Using CloudKit, how can I fetch my results in batches? I know that the default fetch limit it 100 results ... fetch the subsequent 100 results? See Question&Answers more detail:os...

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

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1.1k views

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objective c - How to stop/handle UI Operations in iOS when app moves to background state?

My app can be launched via UIApplicationLaunchOptionsLocalNotificationKey in the background. In that case the usual ... seems tedious. See Question&Answers more detail:os...

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

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1.1k views

1 answer

objective c - NSDateComponents weekOfYear returns wrong value

NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierISO8601]; [calendar setTimeZone:[NSTimeZone ... s bug? 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 - iOS CFStringTransform and ?

I'm working on an iOS app in which I have to list and sort people names. I've some problem with ... find the documentation? Thanks a lot. 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 - iOS 13 UIAlertController - Color change in attributedMessage and attributedTitle doesn't work

Color change in attributedMessage and attributedTitle doesn't work. Is there a solution for it? Works well on ... animated:YES completion: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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objective c - Obj-C introspection: How can a method reference its own selector?

I wish to write a macro, to be used within any method, which references the method's selector. I do not wish ... Is there some 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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948 views

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objective c - UIAlertView in iOS8 appearing off-center, mis-placed, only portion of the screen dimmed

I'm building an iPad app on iOS8, landscape, upgrading from iOS7. I've replaced UIAlertView (deprecated) ... show the alert while backgrounded 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 determine if I have a pointer to released object?

In a function I am processing an object which may be corrupted sometimes, at runtime, can I somehow determine ... not my object is corrupted? See Question&Answers more detail:os...

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

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960 views

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objective c - 100 <= x <= 150 as argument in if (), acting funny

I have an if statement followed by several else if statements. All of the if/else if statements have an ... Any help is appreciated. 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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1.0k views

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objective c - Setting size to custom iOS font doesnt work

I am using some custom fonts in my iphone app. They are displayed correctly, but i cant change their size. Here ... label. What could be 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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