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iOS 3.x support in Xcode 4

Is it possible to write apps that support iOS 3.x versions using Xcode 4? If so, how? And does Apple have any official recommendations on app backwards-compatibility?

How to URL Decode in iOS – Objective C

The stringByReplacingPercentEscapesUsingEncoding method is not working properly as it’s not decoding special symbols that dont start with a % character, i.e., the + character. Does anyone know of a better method to do this in iOS? Here’s what I’m currently using: NSString *path = [@”path+with+spaces” stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; And here’s an example of the output: path+with+spaces

No identities are available for signing Xcode 5

I have an error “No identities are available for signing” when try to validate my app in Xcode 5. I tried all: Recreate certificates and provisioning profiles, all methods which have been described on this site and another resources; I’m confused, because when I try to distribute my app as Ad-hoc, it successfully create and […]

How do I create a 1px line in Interface Builder?

Note, I’m looking to make a 1px line, not a 1pt line. Meaning it should be 1px regardless of screen scale (so 0.5pt on Retina devices). I can do this programmatically, but can I do it in the Interface Builder? For example I cannot set a UIView to have a height of less than 1. […]

UITableView dynamic cell heights only correct after some scrolling

I have a UITableView with a custom UITableViewCell defined in a storyboard using auto layout. The cell has several multiline UILabels. The UITableView appears to properly calculate cell heights, but for the first few cells that height isn’t properly divided between the labels. After scrolling a bit, everything works as expected (even the cells that […]

How is a .dSYM file created?

I’m working on an app with another developer and they just submitted a release to the app store that was built on their computer. In order to make a build on my machine (that belongs to the same git commit), I have to alter the path to one of the libraries we use in my […]

UIImage with rounded corners

I have read several posts already. And almost everyone suggest using QuartzCore/QuartzCore.h with layer.cornerRadius I have tried this method and some more methods. Well, everything works fine when an image doesn’t move. But in my project I always move my images. If I add corner radius or a shadow the image movement is no longer […]

what happens to NSLog info when running on a device?

what happens to NSLog info when running on a device? Where does the text go? Does it get saved? Is it therefore a big overhead when running on a device, or does it effectively get sent to null?

Generating an unsigned IPA iOS application

Is it possible to create an unsigned iOS app, .ipa file? We have an enterprise customer that requires an unsigned IPA file of our iOS application, which they will then sign with their MAM product. If it’s possible, how can I do this?

Cordova iOS plugins not found

I recently upgraded to Cordova 2.9.0 from 2.3.0. After following all the upgrade instructions, I was able to get the app to launch in the simulator. However, in Xcode I see the following errors: ERROR: Plugin ‘Device’ not found, or is not a CDVPlugin. Check your plugin mapping in config.xml. -[CDVCommandQueue executePending] [Line 103] FAILED […]