Recent questions tagged objective

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objective c - How to open camera while I click the UIButton in iPhone?

I am trying to open the camera when I click the UIbutton in iPhone app. I want to store the captured image in a location that I specify. See Question&Answers more detail:os...

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

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433 views

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objective c - Get iPhone phone number label from Address Book

So I have a method to get all the contact phone numbers from the address book on the iPhone, but is there a ... ); [phoneNumber release]; } } See Question&Answers more detail:os...

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

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517 views

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objective c - Date/Time parsing in iOS: how to deal (or not deal) with timezones?

I have an ASP.NET MVC 3 website that communicates with my iOS app via JSON. As part of the objects sent in ... NSDate object I can use in iOS. See Question&Answers more detail:os...

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

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490 views

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objective c - UITableVIew header without bouncing when pull down

I have a UITableView which I am able to add a header view to fairly easily. Many apps (like Facebook, ... even the headerView bounces as well 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 - Replicating the style of the iOS Mail App's Compose Function

I'm building an app on iOS 8 and am looking to replicate the functionality of iOS's mail application when ... of the view controllers? 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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421 views

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objective c - Run multiple AVCaptureSessions or add multiple inputs

I want to display the stream of the front and the back facing camera of an iPad2 in two UIViews next to ... how to stream from both cameras? See Question&Answers more detail:os...

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

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421 views

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objective c - Conditionally following a segue

In my app I have a login screen. When connecting a segue from the login button to the next (table) view ... cause I need a navigation bar.. See Question&Answers more detail:os...

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

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502 views

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objective c - Keep NSThread alive and run NSRunLoop on it

So I'm starting a new NSThread that I want to be able to use later by calling performSelector:onThread:.... ... go about this the right 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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397 views

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objective c - How to implement the NSFastEnumeration protocol?

I have a class and I want my class to confirm to the NSFastEnumeration Protocol. I've read the documentation but ... return and how it works? See Question&Answers more detail:os...

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

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573 views

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objective c - Toll-free bridging and pointer access in Swift

I am porting an App from Objective-C to Swift and I need to use the following method: ... after the CFStreamCreatePairWithSocketToHost call? See Question&Answers more detail:os...

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

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427 views

1 answer

objective c - Added whitespace in UIWebview - removing UIWebView whitespace in iOS7 & iOS8

Im loading local html files, since iOS7 there is added white space on top in the UIWebView.(I cant post an ... and JSON. edit: updated Image See Question&Answers more detail:os...

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

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638 views

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objective c - Printing an NSString

What's the correct way to print an NSString in Objective-C? A lot of examples use NSLog(), but according to the ... 't "feel" like the solution. See Question&Answers more detail:os...

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

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673 views

1 answer

objective c - How do I tell when a UIWebView is done rendering (not loading)?

I know when its done loading... (webViewDidFinishLoad), but I want to use [webView.layer renderInContext: ... is arbitrary and brittle. See Question&Answers more detail:os...

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

0 votes

578 views

1 answer

objective c - Detecting UITableView scrolling

I've subclassed UITableView (as KRTableView) and implemented the four touch-based methods (touchesBegan, touchesEnded, ... up or down? See Question&Answers more detail:os...

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

0 votes

576 views

1 answer

objective c - Screen capture video in iOS programmatically

I'm trying to create a UIView that allows a user to tap a button in i and record the screen (not make a ... be simpler than it is. Thanks, Doug See Question&Answers more detail:os...

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

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448 views

1 answer

objective c - NSURLConnection leak?

i have set up a nsurl which grabs the data from http. when i run instrument, it says i have a leak ... instance elsewhere [KMLdata release]; } See Question&Answers more detail:os...

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

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663 views

1 answer

objective c - How to compare two UIColor which have almost same shade or range in iOS?

I have a condition in my app where user can choose 3 colors, but those colors should not match with each ... how to compare the similar colors. See Question&Answers more detail:os...

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

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387 views

1 answer

objective c - How do I create and cancel unique UILocalNotification from a custom class?

Currently I have a timer with an alarm (local notification). I want to create a timer class from this code to ... right one. 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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401 views

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objective c - How to create my own bundle in Xcode, for iPhone application

I am having some difficulty creating a bundle for my application, and placing files in the bundle. For example ... care while creating a bundle? See Question&Answers more detail:os...

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

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410 views

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objective c - Point in Tilt Direction - iPhone

In my cocos2d game, I have my player sprite and I want to have him move in the direction I tilt my ... rotation value if that helps. 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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624 views

1 answer

objective c - Show subtitles with an AVFoundation AVPlayer on OS X

I'm trying to display subtitles when playing video using AVFoundation on OS X. I've looked through the documentation ... included in the API... See Question&Answers more detail:os...

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

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479 views

1 answer

objective c - Test Driven Design for iPhone Native apps

I'm experimenting with the iPhone SDK and doing some TDD ala Dr. Nic's rbiPhoneTest project. I'm ... @expectedReq, data end 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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527 views

1 answer

objective c - How to create and get return Value from Cocoa Dialog?

In my application, I want to create a dialog box with one text field, and a button, through which I can ... find any predefined method for 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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428 views

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objective c - CocoaPods/Podspec and *.framework

CocoaPods question: I have created a framework bundled with a static library inside, depending on AFNetworking and a ... . Is this possible? See Question&Answers more detail:os...

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

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543 views

1 answer

objective c - How to find available memory in iPhone programmatically?

I'd like to know how to find programmatically available memory in iPhone from Objective-C? See Question&Answers more detail:os...

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

0 votes

461 views

1 answer

objective c - How to upload a UIImage to S3 with AWS iOS SDK v2

The README page in Github (https://github.com/aws/aws-sdk-ios-v2) already has an example to upload an ... (using something like AFNetworking)? See Question&Answers more detail:os...

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

0 votes

463 views

1 answer

objective c - Is it possible to design NSCell subclasses in Interface Builder?

I'm trying to subclass NSCell for use in a NSTableView. The cell I want to create is fairly complicated so it ... possible? How do I do it? See Question&Answers more detail:os...

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

0 votes

419 views

1 answer

objective c - How do I animate in/out a gaussian blur effect in iOS?

For the whole iOS 7 feel, I want to apply a blur effect to a specific portion of the screen to obfuscate it, ... the blur is half applied, etc.) See Question&Answers more detail:os...

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

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