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I have a Swift class:
class MyTextField : NSObject, UITextFieldDelegate {
var myField: UITextField
// no idea how to pass in my UITextField from Objective-C code
init (x: UITextField) {
myField = x;
}
}
I have added a property (not shown) so I could set myField, and everything is working.
Would like to use the init function, if only the syntax were not a complete mystery. Any ideas?
822
Overview. You can work with types declared in Swift from within the Objective-C code in your project by importing an Xcode-generated header file. 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.
Swift classes that are inherited from OBJC classes are bridged automatically. That means any class inherited from, for example, UIViewController is automatically seen in the OBJC runtime. If you're creating a class that doesn't inherit from anything, then make it an NSObject subclass, as you would in OBJC.
You can use Objective-C and Swift files together in a single project, no matter which language the project used originally. This makes creating mixed-language app and framework targets as straightforward as creating an app or framework target written in a single language.
An Objective-C function is declared using the following syntax: <return type> <function name> (<arg1 type> <arg1 name>, <arg2 type> <arg2 name>, ... ) Explanations of the various fields of the function declaration are as follows: <return type> - Specifies the data type of the result returned by the function.
Call it the same way you'd call an Obj-C initializer, so for your example, you'd call [[MyTextField alloc] initWithX:theTextField];.
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