Recent questions tagged objective

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objective c - Hiding NSLog output coming from precompiled library

I am using a precompiled library I don't have the source of and it's printing a lot of debug logs. Is ... output from just a specific library? See Question&Answers more detail:os...

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

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986 views

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objective c - NSDate from NSString

I've read the DateFormatting guide and I'm still not able to get a working formatter. NSString *string ... = [dateFormat dateFromString:string]; See Question&Answers more detail:os...

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

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866 views

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objective c - Printing UIImage using AirPrint causes cut-off content

I am printing out a UIImage using AirPrint but the margins aren't correct. This is what it ... :YES completionHandler:completionHandler]; See Question&Answers more detail:os...

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

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741 views

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objective c - Pass Index Number between UITableView List segue

When I click a certain list item in my UITableView, I want to pass the index of the item that I clicked ... .currentIndex = indexPath.row; } } See Question&Answers more detail:os...

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

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751 views

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objective c - Hide status bar in iOS without removing its view

I want to hide status bar in my iPhone app on a button press and I want to show it again on pressing another ... hidden and there is no jump. See Question&Answers more detail:os...

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

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804 views

1 answer

objective c - How to stop current NSOperation?

I'm using NSOperationQueue, and NSOperation for running some function on background click. But I want to be ... to stop immediately. 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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682 views

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objective c - Duplicate Symbol Error

I'm not sure what I did but I added an IBOutlet to display an additional attribute in a TableView cell. When ... be wrong though). Any 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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759 views

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objective c - Quick way to sum a property of all objects within an NSSet?

I thought there was a way to quickly ask a NSSet to poll its members and return a sum of say an NSInteger ... . Does the better way exist? See Question&Answers more detail:os...

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

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956 views

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objective c - is it possible to combine non-ARC and ARC project code?

Is it possible to combine ARC and non-ARC projects? I haven't really tried it yet but this is the scenario: We ... project's view to the tab. See Question&Answers more detail:os...

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

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888 views

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objective c - Do NSString objects need to be alloc and init?

Noob question: I'm currently under the impression that when you want to create an object, you need to alloc and ... explain why this is so? See Question&Answers more detail:os...

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

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862 views

1 answer

objective c - Remove launch screen, Xcode 7

I can find a bunch of answers from pre-2014 about removing the launch/splash screen by removing the line "Launch ... in Objective-C by the 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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811 views

1 answer

objective c - Subclassing UIAlertController

With pre-iOS 8 we had to use the UIAlertView and UIActionSheet Which we weren't allowed to mess with the ... approve or reject our applications? See Question&Answers more detail:os...

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

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757 views

1 answer

objective c - DynamoDB auto incremented ID & server time (iOS SDK)

Is there an option in DynammoDB to store auto incremented ID as primary key in tables? I also need to store ... at" like fields. 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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740 views

1 answer

objective c - OpenSans font not working in iOS simulator

I'd like to use the OpenSans font on a UILabel, but it's not showing up in the iOS simulator. All that ... what is causing this bizarre 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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976 views

1 answer

objective c - “Expected method body” error

I had my application working fine, then without doing anything, out of nowhere I got 2 errors in appDelegate ... ) UIWindow *window; @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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1.1k views

1 answer

objective c - Count Number of Rows in a SQLite Database

I'm trying the following code to count the number of rows in my SQLite database table, but it throws an exception. ... (@"Error Counting"); } } See Question&Answers more detail:os...

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

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822 views

1 answer

objective c - Is literal creation of an NSMutableDictionary less efficient than the class helper method?

Is it appreciably more efficient to create an NSMutableDictionary using a constructor [NSMutableDictionary ... mutableCopy]; See Question&Answers more detail:os...

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

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1.2k views

1 answer

objective c - Accent insensitive string comparison?

Is there any way to do an accent insensitive string comparison? For example, é == e? I couldn't find any ... :. Any help is greatly appreciated. See Question&Answers more detail:os...

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

0 votes

1.2k views

1 answer

objective c - UIPopoverPresentationController should have a non-nil sourceView or barButtonItem set before the presentation occurs on iOS 9

I'm trying to show a popup using a custom UIPopoverPresentationController class. But it crashes with the error(< ... here? Appreciate your 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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936 views

1 answer

objective c - Using -setImage on NSButton

I am trying to make an image an button (NSButton) in a Cocoa application, below is the code I am trying ... an image. Thanks in advance! See Question&Answers more detail:os...

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

0 votes

799 views

1 answer

objective c - iPhone XMLParser help

I am needing to parse an XML file for my app and I dont have any clue how to do it. I went through one ... too. (the XML file is about 8MB) See Question&Answers more detail:os...

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

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820 views

1 answer

objective c - Change font size without Change UITextView attributedText

I try to change a font size in my UITextView and every time I change the attributedText was restore to ... .font.fontName size:textSize]; See Question&Answers more detail:os...

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

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834 views

1 answer

objective c - importing one Xcode project into another

I am trying to import one of my xcode projects into another, and I was just wondering if there were some best ... to make this happen? 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

1 answer

objective c - NSString Unicode display

I want to look at the display of a number of Unicodes using a forLoop. However the compiler doesn't ... universal character name u00B } 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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827 views

1 answer

objective c - iOS AVPlayer cant play 240 fps video

I recorded a 240 fps video after changing the AVCaptureDeviceFormat. If I save that video in the ... playerController.player = feedVideoPlayer; See Question&Answers more detail:os...

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

0 votes

691 views

1 answer

objective c - Where and how should I instantiate an object which will be used globally in an IOS app?

For simplicity's sake, lets say I am making a stopwatch application for ios5. I have a class called stopwatch ... ios applications. Thank you! See Question&Answers more detail:os...

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

0 votes

725 views

1 answer

objective c - iPhone SDK: How do I pass an array of values from a ViewController onto other ViewController?

I tried creating a method like below in SecondViewController: -(void)setValue:(NSMutableArray*)array { //NSMutableArray ... 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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769 views

1 answer

objective c - NSURLConnection needs a NSRunLoop to execute?

I'm trying to fetch the contents of a URL from a method called connect. It reads its configuration settings and attempts ... is: %@", string); } See Question&Answers more detail:os...

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

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