Recent questions tagged objective

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objective c - Singleton pattern in objc, how to keep init private?

How can i make sure user do not call init, instead client should call sharedSingleton to get a shared instance ... ; return sharedSingleton; } } 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 - With autolayout, label position is reset when I change label text

I am developing a very simple application in Objective-c. In the app, the user can change a position of the ... and the label text has changed. 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 - NSAlert resize window

I have several NSAlert dialogs with different text. I want to adjust the alert window width to the text, so ... can resize the NSAlert window? 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 - Parsing XML data to NSMutableArray iOS - iPhone

This is the XML data: <Categorys> <Category> <categoryId>25</categoryId> <categoryName>My Photos</categoryName> < ... my code? :( 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 - How to compare the types of gestures on iOS?

I have three different gestures with two different types on one view. First is a ... UILongPressGestureRecognizer is triggered. See Question&Answers more detail:os...

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

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877 views

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objective c - Category conflicts

This recent question got me thinking about category conflicts, specifically involving the UIViewControllerRotation category ... ! 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 - How to get a correctly rotated UIImage from an ALAssetRepresentation?

I'm trying to get a correctly rotated UIImage from an ALAssetRepresentation using the fullScreenImage method. I have ... 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 - Unable to make view equal width to cell in iOS?

I am making a custom cell in iOS.I have added prototype cell.I m trying to add a view inside ... d/0B7RGQm8-8k24Q0tXUFZOLUZFQk0/view?usp=sharing 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 - Is there a difference between setting a property with the dot or the bracket syntax?

Given the property declaration below, does method (A) work in exactly the same way as method (B ... [self setYellowViewController:yellcon_New]; 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 resignFirstResponder from view controller

How to resignFirstResponder from uiviewcontroller object with is active. I have five textfields one,two,three,four, ... @All 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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762 views

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objective c - Cocoa: NSURLConnection not attempting an HTTP Request

I've had significant success with NSURL, NSURL[Mutable]Request, NSURLConnection with my iPhone applications. When trying to ... ]; return 0; } 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 - Debugger lldb says my object is nil when is not ?

Recently I upgraded my project settings in Xcode 4.3 and now I use the latest llvm debugger: lldb However ( ... the debugger is doing fine? See Question&Answers more detail:os...

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

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783 views

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objective c - Corelocation incorrect distances

I am developing an application which computes the distance traveled by the user. I am using CLLocationManager ... +0530 distance 994.432508 See Question&Answers more detail:os...

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

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639 views

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objective c - How to completely Logout of Facebook SDK Auth in iOS App

using FBSDKCoreKit 4.22.1 I have an app installed publicly, servicing multiple users during the day. A ... still create local storage entries 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 - Change OS X system volume programmatically

How can I change the volume programmatically from Objective-C? I found this question, Controlling OS X volume in ... decrease the volume to 50%? See Question&Answers more detail:os...

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

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805 views

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objective c - What describes NSNumberFormatter -maximumSignificantDigits?

There's no text in the documentation about what that means, but it sounds very important to understand in order ... digits" of a number? See Question&Answers more detail:os...

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

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785 views

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objective c - Convention for pointer *

Out of curiosity; why is convention for pointers in C languages like this: NSString *str = ... Wouldn't be ... the wheel or start flame war. See Question&Answers more detail:os...

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

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748 views

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objective c - What would be a good data structure for UITableView in grouped mode

Usually I store data in an array. Then, when cellForRowAtIndexPath is called I just look at row and select ... data in UITableView structure? 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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objective c - Setting .reuseIdentifier on a UICollectionViewCell

I have a particular UICollectionViewCell that I want to instantiate myself, and add to a UICollectionView. In ... collection view dequeue 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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817 views

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objective c - Avoid copying NSMutableArray for reading with multithreaded writes

I have a class that uses a mutable array that is modified once after a lot of reads (new items arrive). The ... to it when is being mutated? See Question&Answers more detail:os...

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

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840 views

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objective c - NSMetaDataQuery never calls back with NSMetadataQueryDidFinishGatheringNotification

For an iCloud plugin I'm writing, I subscribe my iCloud manager class to these iCloud NSMetaDataQuery observers: // ... you for your time :) See Question&Answers more detail:os...

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

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684 views

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objective c - NSTextField not calling delegate when inside an NSTableCellView

I have a fairly vanilla Source List (dragged out from the Object Library) in my app, with an NSTreeController as its ... ?"); return NO; } @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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1.0k views

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objective c - How to call the original method from swizzled one?

How to call the original method from swizzled one? The original method is replaced by the code: [[UIWindow class ... :(NSError**)error_; @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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675 views

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objective c - GCM IOS NotRegistered issue

I've been using GCM just fine for a long time already. One day it suddenly broke. The problem is that ... but I'm still getting NotRegistered. See Question&Answers more detail:os...

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

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854 views

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objective c - Change appearance of UIStepper

UIStepper is very convenient but I want to change the appearance of it, I need to have customized icon not ... achieve this? 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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737 views

1 answer

objective c - Modifying NSTextStorage attributes causes scroll view to jump around

I have implemented basic syntax highlighting by properly setting the NSTextStorage delegate of my NSTextView and changing ... 's causing 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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821 views

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objective c - NSNumberFormatter from 13000 to 13K

I would like to convert numbers to the shorter form using NSNumberFormatter. For example: From 23000 to get 23K. How ... not right way to go. See Question&Answers more detail:os...

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

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755 views

1 answer

objective c - get data from push notification when app is closed in iOS and app not running in background

When receive a push notification and my application is totally closed, how can handle this info? Only can get ... has not been read? See Question&Answers more detail:os...

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

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