Recent questions tagged objective

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objective c - iPhone how to get UITextField's text while typing?

I'm trying to show changes made to a UITextField on a separate UILabel. Is there a way to capture full ... each character entered? Thank you! See Question&Answers more detail:os...

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

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600 views

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objective c - Getting an object from an NSSet

If you can't get an object with objectAtIndex: from an NSSet then how do you retrieve objects? See Question&Answers more detail:os...

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

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400 views

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objective c - Measuring velocity via iPhone SDK

I need to implement a native iPhone app to measure the velocity of the phone (basically a speedometer). I know ... there's something out there. 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

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objective c - Hide NSWindow title bar

Is there a way to hide the titlebar in an NSWindow? I don't want to have to completely write a new ... work either. Any help is 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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444 views

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objective c - What are the alternatives to Core-Plot for drawing graphs in iPhone SDK

Are there any alternatives to Core-Plot for drawing graphs in iPhone SDK? I am having hard time integrating ... some alternatives to core-plot? See Question&Answers more detail:os...

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

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644 views

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objective c - Do you put #import s in .h or .m files?

I wonder about Objective-C style. I have FooClass.[hm] that depends on BarClass.[hm] for its implementation ( ... the common choice for 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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396 views

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objective c - NSOperation - Forcing an operation to wait others dynamically

I am trying to implement an operation queue and I have the following scenario: NSOperation A NSOperation B ... Thanks 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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453 views

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objective c - How to get real time video stream from iphone camera and send it to server?

I am using AVCaptureSession to capture video and get real time frame from iPhone camera but how can I send it ... any example please share here. See Question&Answers more detail:os...

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

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430 views

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objective c - Anonymous Category or "private" Category are they same?

Style-wise (and functionally, if there is any difference), for declaring private methods, which of these is ... () @interface MyClass(private) See Question&Answers more detail:os...

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

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469 views

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objective c - Use a fork of Restkit on github via CocoaPods?

restkit is using in a different way the oauth2 protocol, I need to change the code to be able to use ... instead of the official version? See Question&Answers more detail:os...

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

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392 views

1 answer

objective c - Any ReSharper equivalent for Xcode?

I'm a complete Xcode/Objective-C/Cocoa newbie but I'm learning fast and really starting to enjoy getting to grips with ... it can't help to ask. See Question&Answers more detail:os...

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

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508 views

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objective c - Hiding the master view controller with UISplitViewController in iOS8

I have an iOS7 application, which was based on the Xcode master-detail template, that I am porting to iOS8. One ... worked so far. 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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423 views

1 answer

objective c - How to change background color of UISearchBar in iOS7

How to change background color of UISearchBar in iOS7? not gray, I want to change color like my uinavigationbar ... color of 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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350 views

1 answer

objective c - NSFetchedResultsController with search

What is the best practice to filter the NSFetchedResultsController data? do i need to re-initialize it every ... NSString *)searchString; Thx. See Question&Answers more detail:os...

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

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471 views

1 answer

objective c - iPhone - UIImagePickerController -> save the image to app folder

I have an iPhone application using a UIImagePickerController. As sourceType I have UIImagePickerControllerSourceTypePhotoLibrary ... Regards. See Question&Answers more detail:os...

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

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493 views

1 answer

objective c - How to get localized Cancel, Done and etc?

UIBarButtonItem have identifiers like Cancel, Done and some others. They are shown as text to user. If user changes ... it would be very good. See Question&Answers more detail:os...

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

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461 views

1 answer

objective c - UITableView: hide header from empty section

i have a UITableView, that displays expenses from a current month (see screenshot): My problem is with the header ... } return rows; } sebastian See Question&Answers more detail:os...

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

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393 views

1 answer

objective c - Example of using Audio Queue Services

I am seeking an example of using Audio Queue Services. I would like to create a sound using a mathematical equation and then hear 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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401 views

1 answer

objective c - Can I use AVFoundation to stream downloaded video frames into an OpenGL ES texture?

I've been able to use AVFoundation's AVAssetReader class to upload video frames into an OpenGL ES texture. ... any way around the shortcoming. See Question&Answers more detail:os...

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

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632 views

1 answer

objective c - Move other windows on Mac OS X using Accessibility API

I'm trying to use the Accessibility API to change the position of other applications windows.What I wish to do ... (CFTypeRef *)&position); } See Question&Answers more detail:os...

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

0 votes

474 views

1 answer

objective c - Will An Associated Object Be Released Automatically?

Note: This other question seems relevant but it's not: When does an associated object get released? I'm ... get this to happen automatically? See Question&Answers more detail:os...

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

0 votes

420 views

1 answer

objective c - Xcode iPhone Programming: Loading a jpg into a UIImageView from URL

My app has to load an image from a http server and displaying it into an UIImageView How can i do that?? ... ! Thank you in advance. Antonio See Question&Answers more detail:os...

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

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419 views

1 answer

objective c - Core Data merge two Managed Object Context

My Cocoa/Application has a Managed Object Context on the main thread. When I need to update my data my program will: ... is NOT a good idea). 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 - Dynamic UIView height with auto layout in iOS 6

For the last couple of days I am trying to accomplish a fairly simple (at least it should be) layout using ... sample Xcode project from here. See Question&Answers more detail:os...

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

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434 views

1 answer

objective c - Avoiding, finding and removing memory leaks in Cocoa

Memory (and resource) leaks happen. How do you make sure they don't? What tips & techniques would you suggest ... resources and memory on GC) See Question&Answers more detail:os...

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

0 votes

551 views

1 answer

objective c - How to implement highlighting on UIImage like UIButton does when tapped?

I need to replicate the effect that the UIButton does on an image when tapped, the highlighting. See: The original ... . How to do this effect? See Question&Answers more detail:os...

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

0 votes

465 views

1 answer

objective c - iOS - Push notification alert is not shown when the app is running

I've integrated push notifications in my app. Users will receive push notification to join a group. When the user ... whether to join or not? See Question&Answers more detail:os...

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

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473 views

1 answer

objective c - UISplitViewController programmatically without nib/xib

I usually create my projects without IB-stuff. The first thing I do is to strip off all references to xibs, ... what I probably have missed? See Question&Answers more detail:os...

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

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