Recent questions tagged iphone

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iphone - How to check if a directory exists in Objective-C

I guess this is a beginner's problem, but I was trying to check if a directory exists in my Documents folder on the ... exists..."); } } } See Question&Answers more detail:os...

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

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613 views

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iphone - Framework not found AudioUnit

Been banging my head agains the wall for awhile now. My Xcode project went a little haywire while refactoring, ... .framework is also included. See Question&Answers more detail:os...

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

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565 views

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iphone - How do I change returnKeyType while editing?

How can I change the return key on the iPhone while it is editing. I know about myTextField.returnKeyType = ... while it is still editing? See Question&Answers more detail:os...

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

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562 views

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iphone - Day Name From NSDate?

I would like to show the name of day in my iPhone application and i don't found the solution. Thanks for 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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398 views

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iphone - Are instance variables set to nil by default in Objective-C?

I'm sorting out some memory issues with my iPhone app and I've just been thinking about some basics. If I setup ... ]; [super dealloc]; } @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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607 views

1 answer

iphone - Core Data NSPredicate checking for BOOL value

I am currently having an issue pulling all data from db whereby i.e 1 parameter is TRUE. I am using ... appreciate some help. Many 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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426 views

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iphone - How do I kill/suspend/close an asyncronous block in GCD?

I've implemented a block that is dispatched asynchronously using GCD as follows: __block BOOL retValue; dispatch_async( ... a timeout to them? See Question&Answers more detail:os...

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

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530 views

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iphone - Persistent UIBarButtonItem in UIToolbar?

I've been developing an iPhone app that uses a UIToolbar (in the context of a UINavigationController) to display a small ... it's still no 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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506 views

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iphone - Customizing an UITableViewCell subclass

I would want to create a custom UITableViewCell which should have a different appearance than the default implementation ... method 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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435 views

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iphone - How to make iPhoneHTTPServer secure server

I am very new to iPhone development. I downloaded the iPhoneHTTPServer application from bellow link. https://github.com ... ; } return result; } See Question&Answers more detail:os...

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

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442 views

1 answer

iphone - How do i add this sharing button? IOS8 with swift

I want there to be a button in my app, that when it is pressed, this(See image below) Pops up. How do i ... , animated: true, completion: nil) } See Question&Answers more detail:os...

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

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526 views

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iphone - Core Data Table View Section Sort by weekdays using NSSortDescriptor

I'm currently trying to sort my array of objects into day order so they can be grouped in the correct order i ... default: break; } 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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645 views

1 answer

iphone - How do I determine if a coordinate is in the currently visible map region?

I have a list of several hundred locations and only want to display an MKPinAnnotation for those locations currently on ... in a different 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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446 views

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iphone - Show / Hide tab bar

Everyone I have a problem and I have been searching the solution but could not find any. I am working on ... showing its contents. Best 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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436 views

1 answer

iphone - App Crashing when using large images on iOS 4.0

I've been having a problem to show large images on a scrollview, the images are 2,4 - 4,7 MB. It runs fine ... me nuts. Since now thanks a lot! 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 - UIWebView - stringByEvaluatingJavaScriptFromString - not changing text box value

Why doesn't this code work? It shows the Google screen but it doesn't change the text box value. I confirmed that the ... ')[1].value='test';"]; 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

1 answer

iphone - Contents of UIScrollView shifted after dismissing ModalViewController

I have a paged scrollview. Each page has a viewcontroller (buttonViewController) that manages a grid of buttons. ... causing the move though. See Question&Answers more detail:os...

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

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563 views

1 answer

iphone - How to find out carrier signal strength programmatically

Here is the code that I have used to find out carrier signal strength: int getSignalStrength() { void * ... it returning positive values always? See Question&Answers more detail:os...

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

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591 views

1 answer

iphone - current location without using gps

hai Can we know current location without using gps? Is it 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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467 views

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iphone - UITableView Drawing Problems When ReloadData Is Called

I have a pretty large list of 'items' (up to 250 entries) which is constantly changing. The list is ... would be freaking awesome, 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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381 views

1 answer

iphone - Change NSFetchedResultsController on SegmentedControl change

I've got a UITableView which is filled using a Core Data NSFetchedResultsController. I've now added a ... } return __fetchedResultsController; } See Question&Answers more detail:os...

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

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468 views

1 answer

iphone - Drifting yaw angle after moving fast

In my current project I ran into trouble regarding the quaternion provided by Core Motion's CMAttitude. I put ... drifting away from origin. See Question&Answers more detail:os...

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

0 votes

565 views

1 answer

iphone - Change Google Maps' Selected Marker or change marker's color? [iOS]

I am wondering if there is a way to change the color or image of the selected marker and then change it ... Anything helps. 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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596 views

1 answer

iphone - How to handle socket connection's events when app is in background?

I want use the following function even when app is in background? - (void)stream:(NSStream *)theStream ... :handleEvent called in background? See Question&Answers more detail:os...

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

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451 views

1 answer

iphone - How to remove the last unicode symbol from NSString

I have implemented a custom keyboard associated with a text field, so when the user presses the delete button, I ... able to figure out what. 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 - Change the text of a UILabel (UIBarButtonItem) on a toolbar programmatically

I'm a beginner iPhone developer. My code is the following: UIBarButtonItem *fixedSpace = [[UIBarButtonItem alloc] ... English. Greetings, Luca. 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

1 answer

iphone - Vector like drawing for zoomable UIScrollView

I have a zoomable UIScrollView with some CATextLayers and simple CALayers in it. They get rendered fine but the ... ;) Thanks in advance. See Question&Answers more detail:os...

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

0 votes

395 views

1 answer

iphone - How to add a contact from my app to the iOS address book

I would like to add the ability to save a contact (phone number, name, address and email) in the iOS address ... application! 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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