NS_SWIFT_NAME is an attribute in Objective-C that is used to specify a Swift-compatible name for an Objective-C symbol. When writing Objective-C code that needs to be accessed from Swift, it is often necessary to provide alternate names for Objective-C symbols that have names that do not conform to Swift’s naming conventions. For example, in Objective-C,
Computer users often have small secrets that they need to store securely. For example, most people manage numerous online accounts. Remembering a complex, unique password for each is impossible, but writing them down is both insecure and tedious. Users typically respond to this situation by recycling simple passwords across many accounts, which is also insecure.
This table is geared towards iOS developers who want to start working on android. You can refer this table whenever you are confused about what component to use in android, and also what tool to accomplish a task. I have tried to make it 1:1. So its easy to google the information needed. iOS Android
Method Swizzling is the ability that Objective-C Runtime gives us, to switch the implementation of an existing selector at runtime. I came across an article in NSHipster which does method swizzling. The link to the article is here https://nshipster.com/swift-objc-runtime/ For convenience or to work around a bug in a framework, or because there’s just no
It has to do the following: Ability to stop and start the timers on individual rows. Store the values of the rows when it goes out of display.
View the code on Gist.
For threaded code, locks are one of the traditional ways to synchronize access to resources that are shared between threads. However, the use of locks comes at a cost. Even in the non-contested case, there is always a performance penalty associated with taking a lock. And in the contested case, there is the potential for
Could not find a storyboard named ‘Main’ in bundle NSBundle </Users/spycar/Library/Application Support/iPhone Simulator/6.1/Applications/675F83FA-1A16-4C66- Solution: Goto Project settings – Info – Custom iOS Target Properties and then delete this key: Main storyboard file base name Basically xcode was trying to find the storyboard which wasn’t there.
Download the sample project here: https://github.com/kmdarshan/LearnKVO I have implemented a sample project with KVO explained. The two main methods to note are :
UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] init]; temporaryBarButtonItem.title = tmpString; // this is your text to be set self.navigationItem.backBarButtonItem = temporaryBarButtonItem;