Go to File -> New -> File… , a window will appear in which you will select “Objective-C File” , name the file however you choose, then select Create. A pop-up will appear asking you if you want to create a bridging header like in the image bellow. Choose “Create Bridging Header” and voila, you a have it.
How do I use the Objective-C bridging header in Swift?
In your Objective-C bridging header, import every Objective-C header you want to expose to Swift. In Build Settings, in Swift Compiler - General, make sure the Objective-C Bridging Header build setting has a path to the bridging header file.
What is a header in Objective-C?
This file is an Objective-C header that declares the Swift interfaces in your target, and you can think of it as an umbrella header for your Swift code. You don’t need to do anything special to create the generated header—just import it to use its contents in your Objective-C code.
How do I create a bridging header in Xcode?
If you accept, Xcode creates the bridging header file along with the file you were creating, and names it by using your product module name followed by "-Bridging-Header.h". Alternatively, you can create a bridging header yourself by choosing File > New > File > [ operating system] > Source > Header File.
How do I import an Objective-C file into Swift?
Alternatively, you can create a bridging header yourself by choosing File > New > File > [ operating system] > Source > Header File. Edit the bridging header to expose your Objective-C code to your Swift code: In your Objective-C bridging header, import every Objective-C header you want to expose to Swift.
How do you create a bridging header in Objective-C?
To create an Objective-C bridging header file, all you need to do is drag some Objective-C code into your Swift project – Xcode should prompt you with the message "Would you like to configure an Objective-C bridging header?" Click "Creating Bridging Header" and you'll see a file called YourProjectName-Bridging-Header.
How do you make a bridging header H?
How to create a Swift Bridging Header ManuallyAdd a new file to Xcode (File > New > File), then select “Source” and click “Header File“.Name your file “YourProjectName-Bridging-Header. ... Create the file.Navigate to your project build settings and find the “Swift Compiler – Code Generation” section.More items...
How do you find the bridging header?
1 AnswerFirst go to project build setting,Then search Swift in in the search box.After that you will find a Objective C Bridging Header option in Swift Compiler Code Generation Area.Add the bridging header path for this Objective C Bridging Header Option.Path should be Given as.
How do you use bridging headers in framework?
As the error states, bridging headers are not allowed in Frameworks. The Importing Code from Within the Same Framework Target section of the Mix & Match apple documentation hints at this. As they say, you need to "In your umbrella header file, import every Objective-C header you want to expose to Swift".
What is #import in Objective-C?
#import and #include are preprocessor directives for bringing in the contents of a header to a file. #include is replaced by the contents of the header directly, while #import is only replaced by the contents of the header the first time that header is imported.
Is Swift or Objective-C better?
Swift is easier to read and easier to learn than Objective-C. Objective-C is over thirty years old, and that means it has a more clunky syntax. Swift streamlines code and more closely resembles readable English, similar to languages like C#, C++, JavaScript, Java, and Python.
What is an umbrella header?
The umbrella header is the 'master' header file for a framework. Its use is that you can write #import
What is Objective-C interoperability?
Using Objective-C code in Swift To use Objective-C code in Swift, it is only necessary to import Objective-C header file in bridging header file to expose it to Swift. If you are working on a framework, you will need to import Objective-C in umbrella header since bridging headers are not available for frameworks.
How do you call Swift in Objective-C?
Call Swift from Objective-CIn your Objective-C project, create a new Swift file. You are prompted to add a bridging header if you don't already have one. Accept this prompt. ... Import the new Swift header (
What is a bridging header?
Its correct to say, Bridging header allows user to use Objective-C classes/files in their swift code in same project. A Swift bridging header allows you to communicate with your old Objective-C classes from your Swift classes.
How do you remove a bridging header?
Go to Build Settings of your project, find Objective-C Bridging Header row and remove its contents. This works, and in case anyone ends up with a lot of new errors with NSObject after removing this, check to make sure that you have 'import foundation' in your classes that inherit from NSObject.
How do you pass code between Objective-C and Swift?
Import Code Within a Framework TargetUnder Build Settings, in Packaging, make sure the Defines Module setting for that framework target is set to Yes.Import the Swift code from that framework target into any Objective-C . m file within that target using this syntax and substituting the appropriate names:
How do you make a bridging header H in Swift?
Alternatively, you can create a bridging header yourself by choosing File > New > File > [operating system] > Source > Header File. Edit the bridging header to expose your Objective-C code to your Swift code: In your Objective-C bridging header, import every Objective-C header you want to expose to Swift.
What is the role of bridging header in iOS project?
Que : What is the use of bridging header? Its correct to say, Bridging header allows user to use Objective-C classes/files in their swift code in same project. A Swift bridging header allows you to communicate with your old Objective-C classes from your Swift classes.
How do you remove a bridging header?
Go to Build Settings of your project, find Objective-C Bridging Header row and remove its contents. This works, and in case anyone ends up with a lot of new errors with NSObject after removing this, check to make sure that you have 'import foundation' in your classes that inherit from NSObject.
What is an umbrella header?
The umbrella header is the 'master' header file for a framework. Its use is that you can write #import
Create Your Swift Application
Begin by creating your Swift Application or using an existing one. In the screenshot provided below, I’ve created a project and gave it a name, as well as switched the language to Swift.
Adding our Framework to be Accessed in Swift Files
Once the project is created, select “Linked Frameworks and Libraries” and hit the + button as shown below then, add in TelerikUI.framework. Note: This assumes that you have already downloaded and installed UI for iOS .
Create the Bridging Header and Configure our Project
Now that we have the TelerikUI.framework added to our project, we need to simply add an “Empty Objective-C File” to our project. Go to File -> New -> File and select Objective-C File as shown below:
Using UI for iOS in Swift
We can now switch over to our ViewController.swift or whatever file we would like to use the Telerik framework in and add some code. In this sample, I’m going to create a simple chart to make sure my project has recognized that I’ve added UI for iOS.
Wrap-Up
I hope this post gave you a look at how easy it is to useTelerik UI for iOS in your next Swift Application. While I only covered the chart, this can be applied to all of our controls such as ListView, DataForm, Alert, Calendar, SideDrawer and more! Feel free to download a trial of Telerik UI for iOS and checkout our new DataForm and Alert controls.
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