![]() ![]() Swift for iOS development is a static-typed language which works with LLVM compiler and can reuse the existing code, eradicate unused resources, manage inline functions, and so on. ![]() Swift is an open-source language and the swift code can be portable on many more platforms than Objective-C was ever. Personally, I have seen the evolution of Swift since its first version was unveiled and I can say that between swift vs C, Swift supersedes Objective-C based on factors, like Open-Source In fact, Within the fight of swift or Objective-C for iOS, Various iOS apps like LinkedIn, Yahoo Weather, Hipmunk, and Lyft have already been upgraded from Objective-C to Swift, while many are planning to convert an Objective-C app to Swift. With this rise in popularity and exciting features, a lot of iOS application developers who were previously working with Obj-C has switched to Swift programming language. But the war of swift vs objective-C never mellows down. The programming language has managed to make its place in the chore of Top 10 Programming languages , sharing the position with its predecessor, Objective-C. He is passionate about Apple platform and is keen to learn new technologies introduced by Apple.Since its release back in 2014, Apple’s programming language Swift has undergone phenomenal growth. Muhammad Bilal is lead iOS App Developer at Techliance, a leading Custom Information Technology Services Company in United States. So, we can create wrapper classes in Swift and consume Objective C classes to provide the same functionality without rewriting anything. To conclude, the bridge header mechanism along with hidden swift file generated by XCode provides a way for Objective C and Swift classed to talk to each other and consume each other services. This is because unwrapping (!) is prone to errors. Resolve the optionality issue, by using if else or let guard statements, instead of unwrapping (!) the variables. For instance, to solve the double definition of variable issue, you will need to remove duplicate declarations. However, these issues can be addressed, and these tools save a lot of time and labour. Once you convert your application using these tools, you may still see some bugs and syntax errors like In that situation, you can use online and desktop converter tools to convert you Objective C app to a Swift app. Sometimes the project is huge in terms of source code and it takes a lot of time to change each individual file written in Objective C to swift that it seems easier to rewrite the whole project from scratch. In your swift classes where you want to access Objective C classes, so you will import the hidden Xcode generated file. Put the required Objective C header files in the created bridge header file to access these classes in Swift.ģ. ![]() ![]() When you create your swift file in an Objective C app, you will need to accept click on create bridge file.Ģ. Let us summarize this three-step process:ġ. Look at the Figure 5 given below.įigure 5 – Import the Xcode generated background Swift file into Objective-C classes to create Swift objects in Objective-C In the example I build, my project name is “Guilder” So the Xcode generated file name is “Guilder-swift.h”. The name of that file will be like “NameOfTheProject-swift.h” according to your project name. We will need to import that hidden (Xcode generated background file) Swift file into Objective C classes to create Swift objects in Objective C. To solve this issue, we will need the background file generated by Xcode when created the swift file in step 1. The bridge file allows Objective C classes to be imported swift classes but does not allow Swift class objects to be created in Objective C classes. Step 3: Import Xcode generated background Swift file to allow Swift objects in Objective-C At this stage, we can create objects of Objective C classes in Swift, however, if we try to create Swift classes objects in Objective C classes it will show an error. This bridge header file allows us to create Objective C objects in Swift classes. Figure 4 – Import the Header Files of Object-C in Bridging Header ![]()
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