Recent questions tagged Objective

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objective c - XCode Documentation - Offline Reading

Is it possible to have the iOS and OSX documentation available for offline reading? If so, how? See Question&Answers more detail:os...

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

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874 views

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objective c - containerURLForSecurityApplicationGroupIdentifier returns nil on iOS Simulator

Context With iOS8 and extensions Apple introduced the App group containers (more info here). Problem We use it through ... any way to fix 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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517 views

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objective c - Possible to Subclass UILocalNotification and Change Default "Close" Button Text and Method?

Searching for a way to change the "Close" button text/functionality of a UILocalNotification... I've found that it ... please) we see on screen? See Question&Answers more detail:os...

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

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550 views

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objective c - How do I export text from iOS application to desktop PC?

Lets say I have written an application for iOS which allows the user to enter some text and save it. ... possible, what are the alternatives? See Question&Answers more detail:os...

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

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782 views

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objective c - How do I clear a cell completely when I reuse it?

When I call [table reloaddata]; The cells get redrawn with new data, but my UILabels get messed up because they ... they are no longer visible. See Question&Answers more detail:os...

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

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772 views

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objective c - Why does isEqualToString not work for NSString?

I am trying to code the login process for an iPhone app in XCode. The problem is with the NSString ... loginbutton.enabled = FALSE; } See Question&Answers more detail:os...

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

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885 views

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objective c - Why is my object not key value coding-compliant?

Trying to use key-value coding to set a value on my object: [engine setValue:[NSNumber numberWithInt:horsePower ... key value coding-compliant? See Question&Answers more detail:os...

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

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819 views

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objective c - Xcode: How to change Image on Touching at an Image (same Position)?

Simply, I have placed an image with the Interface Builder in a UIView. Now I want to run a method/function when ... imageNamed:@"t_1_4.jpg"]; } See Question&Answers more detail:os...

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

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666 views

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objective c - Height of UIWebView minus 44px programmatically?

Is it possible to set the height of a UIWebView by doing something like this.. [webView.height: ... from the bottom, programmatically. See Question&Answers more detail:os...

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

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616 views

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objective c - How do I speed up iOS transitions and segues?

Is it possible to set a property application-wide to double the speed of transitions within an iOS app? See Question&Answers more detail:os...

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

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557 views

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objective c - NSURL returns Invalid Summary when merging WAV files

I'm trying to merge 2 .wav files inside of an Objective-C project. The idea is that i want it to give this output ... me if i'm wrong on 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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540 views

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objective c - iOS: TapGestureRecognizer Issues

So I have an app that behaves like a photo gallery and I'm implementing the ability for the user to delete ... help is much 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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740 views

1 answer

objective c - How do I pick and record video using UIImagePickerController for iPhone?

I want to pick a video from iPhone for my application for uploading on the Web. I am using the UIImagePickerController ... I get it as video? See Question&Answers more detail:os...

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

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770 views

1 answer

objective c - How do you remove parentheses words within a string using NSRegularExpression?

I am not too familiar with regex and so I been having some getting this to work with Apple's NSRegularExpression ... string using" Thanks 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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568 views

1 answer

objective c - Running arbitrary code at runtime

I know this is an odd question, but I'm wondering if this is possible. Is there any method by which code ( ... or am I just wasting my 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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604 views

1 answer

objective c - Callback function of output unit of audio graph - can't read data

I am trying to capture the input data stream to the output unit in an audio graph so I can write it to a file ... . What am I doing wrong 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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769 views

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objective c - ceil() not working as I expected

I'm trying to divide one number by another and then immediately ceil() the result. These would normally be variables, ... a loss at this point. See Question&Answers more detail:os...

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

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604 views

1 answer

objective c - XCode: application->iPod Run/Build not uploading app

Xcode says it builds and finished running on my iPod except the app is not on my iPod. Using Xcode 4.2.1 ... , and still get the same problems. 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 - Center UIButton programmatically

I have a UIButton which i add programmatically. No problems here, it stetches as it should and looks good ... ]; return footerView; } See Question&Answers more detail:os...

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

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828 views

1 answer

objective c - Custom AlertView With Background

Everybody, I need to set one image on UIAlertView.. I have attached my UIAlertview with image prob.. i have ... need only image with alert.. See Question&Answers more detail:os...

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

0 votes

754 views

1 answer

objective c - Refresh NSManagedObjectContext

I am writing a WatchKit extension for an iPhone application. I share Core Data using App Groups. This is ... NSManagedObject doesn't support it. See Question&Answers more detail:os...

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

0 votes

604 views

1 answer

objective c - Download font .ttf file from web and store on iPhone

Is it possible to download .ttf file from web and store it on iPhone. Then use that for for labels and all other ... it and use as font. 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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601 views

1 answer

objective c - Custom UITableViewCell with reuseIdentifier without Style?

In my tableview, I need a bunch (5-6 types) of different cells. All have the same visual layout for ... provide it is through the initializer? See Question&Answers more detail:os...

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

0 votes

658 views

1 answer

objective c - Reliable access and modify captured camera frames under SceneKit

I try to add a B&W filter to the camera images of an ARSCNView, then render colored AR objects over it. I' ... the camera feed reliably to BW? 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

1 answer

objective c - different coloured polygon overlays

is it possible to create different coloured polygons on a map view using the following method? -(MKOverlayView *) ... and the other to yellow? See Question&Answers more detail:os...

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

0 votes

649 views

1 answer

objective c - App States with BOOL flags

I've got 5 states in my app, and I use BOOL flags to mark them. But it isn't straightforward, because I ... and more Apple-way. Answer below. See Question&Answers more detail:os...

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

0 votes

692 views

1 answer

objective c - Custom AlertView With Background

Everybody, I need to set one image on UIAlertView.. I have attached my UIAlertview with image prob.. i have ... need only image with alert.. See Question&Answers more detail:os...

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

0 votes

634 views

1 answer

objective c - Iterate through photo library on OS X?

I'm trying to iterate through a user's photo library on OS X. On iOS, I would use the Photos framework ... works for the current Photos 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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