Recent questions tagged IPhone

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iphone - Customize UIPickerView's Skin with images

I am developing an iPhone application. Where in, I want to have UIPickerView as in the image. Is it possible to ... ? 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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403 views

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iphone - How to create the required certificates for iOS Development?

I have registered for the Apple Developer Program and I am now able to login into the portal. I am a very ... on my Mac. 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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444 views

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iphone - In App Purchase

in the App Store Review Guidelines is stated in section that "Apps using IAP to purchase physical goods or ... my assumptions correct? BR STeN See Question&Answers more detail:os...

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

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706 views

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iphone - Unicode Character Not Showing

I want to display the "infinity" symbol using CGContextSelectFont(context, "HelveticaNeue", textSize, kCGEncodingMacRoman); ... I am using? See Question&Answers more detail:os...

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

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470 views

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iphone - How to customise EKEventEditViewController

I am using default EKEventEditViewController in my App and I want to customize it, currently it shows all fields that ... how can I do 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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521 views

1 answer

iphone - render to floating point texture under iOS

The iPad now supports the OES_texture_half_float extension. Unfortunately I'm having trouble binding a floating- ... something incorrectly? See Question&Answers more detail:os...

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

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488 views

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iphone - Size Classes in iOS 7

I created a new app in Xcode 6 using Size Classes. After testing with iOS 7, I can't figure out how to get ... on the device rotation in iOS 8. See Question&Answers more detail:os...

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

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523 views

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iphone - Streaming with an AVAudioplayer

In order to load a sound file, I have the following code in my application : - (id) init:(NSString*) ... for sounds. thx for 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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422 views

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iphone - Is parentViewController always a Navigation controller?

I was kind of scratching my head at this a week ago, and now with a little bit more Cocoa experience ... (in this case, Page1ViewController). See Question&Answers more detail:os...

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

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495 views

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iphone - White page when loading while using jQuery Mobile

We're using jQuery Mobile 1.3.2 for a mobile HTML5 app at www.tekiki.com. (Check from an iPhone, or ... the loading screen to the first page. 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

1 answer

iphone - Releasing renderInContext result within a loop

I have a method which is called in a loop, that looks something like this: NSAutoreleasePool *pool = [[ ... alternative suggestions please :)? See Question&Answers more detail:os...

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

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515 views

1 answer

iphone - drawing text using CGContextShowTextAtPoint but text shown is inverted,

- (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSelectFont(context, "Arial", ... !! 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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560 views

1 answer

iphone - how to create custom tableViewCell from xib

I want to create a custom TableViewCell on which I want to have UITextField with editing possibility. So I created ... test"; return cell; } 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

iphone - Is it possible to show a tooltip in an iOS app?

I want to show a tooltip whenever user clicks an image in my app. I just want to know whether it is possible to show tooltip in 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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584 views

1 answer

iphone - why is "error:&error" used here (objective-c)

why is "error:&error" used here (objective-c) NSError *error = nil; NSArray *array = [moc ... effectively pass-by-reference anyway? See Question&Answers more detail:os...

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

0 votes

501 views

1 answer

iphone - Wake up an app at a specific time in iOS

I need to build an application that will have an alarm clock function - meaning that the user will be able ... iOS offer this behavior? Thanks! See Question&Answers more detail:os...

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

0 votes

867 views

1 answer

iphone - Page count of UICollectionView with paging in iOS

Consider a UICollectionView with flow layout and paging enabled (by setting pagingEnabled to YES). What would be the ... or the layout changes)? See Question&Answers more detail:os...

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

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455 views

1 answer

iphone - Data Protection on iOS

If targetting iOS 4, you can use the Data Protection APIs. If you have 'Full' protection, does this ... the NSData data protection options? See Question&Answers more detail:os...

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

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714 views

1 answer

iphone - Segue is being executed twice

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { self.selectedClubState = ... happening? See Question&Answers more detail:os...

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

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501 views

1 answer

iphone - IOS 4.3 UINavigationBar tintColor Leaks

In IOS4.3 if I set navigationBar.tintColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:1]; ... , you can see the UIDeviceRGBColor leak See Question&Answers more detail:os...

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

0 votes

559 views

1 answer

iphone - UINavigationController's back button disappears?

I notice something strange happens to one of my view controller: the back button disappears, yet it's possible to ... real device. Any ideas? See Question&Answers more detail:os...

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

0 votes

671 views

1 answer

iphone - NSDateFormatter +dateFormatFromTemplate:options:locale: BUG?

Please see below codes and output. NSDateComponents *dateComponents = [[[NSDateComponents alloc] init] autorelease]; [ ... ? Please 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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454 views

1 answer

iphone - When should you NOT use the asterisk (*) when declaring a variable in Objective C

I have just started learning objective c and the asterisk is giving me some trouble. As I look through sample ... you use the variable for? See Question&Answers more detail:os...

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

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577 views

1 answer

iphone - creating custom camera with square view on iOS

I am trying to create a custom camera experience on iOS and the following code snippet is as far as I got. ... a single view project on Xcode 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

iphone - UINavigationController navigation stack problems in landscape mode

I have an iPhone application that I am currently converting to a universal binary to work with the iPad. I have ... How do I fix this problem? See Question&Answers more detail:os...

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

0 votes

504 views

1 answer

iphone - Prefilled version of Core Data?

My app involves getting a large json file via the internet, and then parsing it into Core Data. Thats fine, ... can decide to refresh it later. See Question&Answers more detail:os...

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

0 votes

664 views

1 answer

iphone - How do you copy a CALayer?

How can you make an NSArray full of multiple instances of a CALayer (all with the same frame, contents etc)? ... later on in that class.) See Question&Answers more detail:os...

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

0 votes

491 views

1 answer

iphone - Prevent Splash Screen from showing after returning from background

I've noticed something that happens in every app i develop. It's usually not a concern but in this specific ... problem for this specific 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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