Xcode Missing Support Files iOS 12.2 (16E227)


This means that your system might not have any support files for iOS version 12.2. Solution 1: Upgrade Xcode and MacOSx You can upgrade your Xcode as well as MacOS version if there is any incompatibility Solution 2: Skip upgrading Xcode and MacOSx Download support files: https://github.com/iGhibli/iOS-DeviceSupport/blob/master/DeviceSupport/12.2%20(16E226).zipExtract the zip file.Copy to "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport".Rename 16E266 folder to … Continue reading Xcode Missing Support Files iOS 12.2 (16E227)

Application installation failed through Xcode


This application's application-identifier entitlement does not match that of the installed application. These values must match for an upgrade to be allowed. If you are trying to install an application which is already present in your phone which was downloaded from a different source, then this error will occur. An example could be as follows: … Continue reading Application installation failed through Xcode

iOS – Objective-C | Scale Image Size to Fullscreen


You may need to use the following imports (if needed, update your pod file accordingly) #import <UIImageView+WebCache.h> #import <UIView+CBFrameHelpers.h> Using UIImageView  // UIImageView * flyerImageView; define in .h file and connect to your imageview in .xib file  UIImage *_image = [UIImage imageNamed:@"some_image_name.png"];  [flyerImageView setImage:_image]; CGSize actualSize = image.size;  float scale = flyerImageView.frame.size.width / (float)actualSize.width; CGSize newSize = CGSizeApplyAffineTransform(actualSize, … Continue reading iOS – Objective-C | Scale Image Size to Fullscreen

Un-able to download application “” could not be installed at this time.


Well, this is quiet annoying error faced by a lot of iPhone users when downloading application to their  phones. There could be several reasons why this error could arrive. That is why it's not that easy to fix, specially, when you know don't exactly know where to look and start debugging from. Here are the … Continue reading Un-able to download application “” could not be installed at this time.

NSInvalidUnarchiveOperationException due to NSLayoutConstraint


Controller crash with the following error? Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: NSLayoutConstraint One quick solution:: Open the .xib file of that controller. click on the view and go to file inspector in the right pane. deselect auto layout. build and run the application. Works like a charm. 🙂  

NSUnknownKeyException’, reason: ‘[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key keyPath.’


Okay so here is just another annoying error I faced during development. Here is the error log NSUnknownKeyException', reason: '[<UILabel 0x17428340> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key keyPath.' Reason 1: Wrong or expired reference of the View(s) to the IBOutlet with the file owner. In interface builder you linked your … Continue reading NSUnknownKeyException’, reason: ‘[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key keyPath.’

Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[UILabel copyWithZone:]: unrecognized selector sent to instance [some_instance_id]


Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UILabel copyWithZone:]: unrecognized selector sent to instance This could be quite annoying bug for you when you know you have done nothing wrong. And your code is all so neat and clean. Well, it isn't actually. There is apparently no errors for you but when you compile … Continue reading Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[UILabel copyWithZone:]: unrecognized selector sent to instance [some_instance_id]

Setting up XAMPP and Your Project Folder


This is an introductory tutorial where we setup our first PHP-MySQL project using XAMPP. Follow the following steps to get started with web application development without any hassel. I want to keep everything simple and step by step guide for beginners. Step 1: Download XAMPP to your system:- Pick up the latest XAMPP installation version and … Continue reading Setting up XAMPP and Your Project Folder