Recent questions tagged iPhone

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iphone - Problem using NSURLRequest to POST data to server

I create an NSURLRequest to post my data in the iPhone application to a server to proceed the PHP script. My PHP ... issues. How can I fix it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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355 views

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iphone - Core Data vs. SQLite for SQL experienced developers

We're beginning development of an in-house app in the iPhone Enterprise developer program. Since it's close ... project justify us learning it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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346 views

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iphone - How to use iOS Reachability

I'm developing an iPhone app that uses the network. The iPhone communicate with my server via HTTP request ... currently there is no internet? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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433 views

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iphone - How to create a UIScrollView Programmatically?

Alright, so the key here is I'm not using IB at all, because the View I'm working with is created ... correctly? Thank you for your help! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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iphone - Handling touches inside UIWebview

I have created a subclass of UIWebView , and have implemented the touchesBegan, touchesMoved and touchesEnded methods ... UIWebView subclass ??? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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681 views

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iphone - How to wrap a Struct into NSObject

this is supposed to be trivial I think, but I can't find a way how to wrap a Struct variable into ... a struct into an NSMutableArray? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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605 views

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iphone - Slow start for AVAudioPlayer the first time a sound is played

I'm trying to eliminate startup lag when playing a (very short -- less than 2 seconds) audio file via ... them in low memory conditions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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302 views

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iphone - How to: Save order of tabs when customizing tabs in UITabBarController

I am having problems finding any other information than the docs for how to save the tab order for my ... something saved? :) Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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715 views

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iphone - How to crop the image using UIBezierPath?

I want to get the image from the UIBezierpath closed path(See the image). I draw the image on the UIView using ... )]; } [aPath closePath]; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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445 views

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iphone - UISwitch in a UITableView cell

How can I embed a UISwitch on a UITableView cell? Examples can be seen in the settings menu. My current ... ]; cell.accessoryView = mySwitch; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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506 views

1 answer

iphone - Is there any way at all that I can tell how hard the screen is being pressed

I want to find the pressure of the touch. I just don't know how to accomplish that result with out jailbreaking ... know How I would do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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iphone - When is UIViewController viewDidUnload called?

Note: This question is outdated-viewDidUnload is deprecated iOS 6. When does UIViewController's viewDidUnload ... manually? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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710 views

1 answer

iphone - Could not find a storyboard named 'Main' in bundle

I'm getting a strange error: 'Could not find a storyboard named 'Main' in bundle NSBundle' when trying to run ... for targets before iOS 6.0 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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452 views

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iphone - long polling in objective-C

I have an application that uses an API to get real time updates on the website. They use what they call a ... has to run in the background. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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409 views

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iphone - Make Background of UIView a Gradient Without Sub Classing

Is there a way to make the background of a UIView a gradient without subclassing it? I'd rather not use ... draw a gradient for the background. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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493 views

1 answer

iphone - NSMutableArray addObject: -[__NSArrayI addObject:]: unrecognized selector sent to instance

I have tried to initialize my NSMutableArray 100 ways from Sunday, and NOTHING is working for me. I tried setting ... idea what's going wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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495 views

1 answer

iphone - Animating UILabel Font Size Change

I am currently making an application that uses a custom View Controller container. Multiple views are on the screen ... .label sizeToFit]; }]; See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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423 views

1 answer

iphone - Getting RGB pixel data from CGImage

I am trying to access pixel data from a CGImage. I want to be able to access the RGB values as integers. I ... can work with them. Thanks, Rich See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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394 views

1 answer

iphone - Core Data and Core Location

I have a Core Data database with latitude and longitude properties. Is there a way to use Core Location's ... is there an easier way? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

1 answer

iphone - How To Create A Gallery on iOS

I'm starting to develop a simple application for iOS, and this application is a simple gallery of some photo ( ... resolution), am I right? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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458 views

1 answer

iphone - UISearchbar clearButton forces the keyboard to appear

I have a UISearchBar which acts as a live filter for a table view. When the keyboard is dismissed via ... any effect on the keyboard. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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562 views

1 answer

iphone - Change color of UISwitch in "off" state

I've learned that we can change the UISwitch button appearance in its "on" state, but is it also possible to ... UISwitch in the "off" state? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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592 views

1 answer

iphone - Draw Graph curves with UIBezierPath

I'm drawing a graph in my application. My problem is that I want to draw line joining vertex points as ... can suggest some alternative... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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326 views

1 answer

iphone - Difference between two NSDate objects -- Result also a NSDate

I have two NSDate objects and I want the difference between the two and the result should again be a ... use NSDateFormatter to localize it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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663 views

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iphone - White space before separator line into my TableView

I have a question about UITableView... I have a UITableViewController and I created a custom cell. When I ... remove this white left padding? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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509 views

1 answer

iphone - Disabling vertical scrolling in UIScrollView

There is an option in IB to uncheck vertical scrolling on a scrollview, but it doesnt seem to work. How can the ... in the code rather than IB? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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317 views

1 answer

iphone - Am I abusing UIViewController Subclassing?

In trying to figure out why viewWillAppear wasn't being called in my app I came across what may ... perceived functionality of UIViewController? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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374 views

1 answer

iphone - iOS 5: Curious about UIAppearance

On the tech talk 2011 I saw a speech about the new UIAppearance protocol. There is not a lot of documentation ... changes aren't taking place. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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