Downloaded 13 times
![INITIALIZERS
[[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStyleGrouped];
UITableView(frame: CGRectZero, style: .Grouped)
[UIColor colorWithRed:0.5 green:0.0 blue:0.5 alpha:1.0];
UIColor(red: 0.5, green: 0.0, blue: 0.5, alpha: 1.0)](https://image.slidesharecdn.com/swift-objc-151103000226-lva1-app6891/75/Swift-Objective-C-Interop-11-2048.jpg)
![METHODS
[myTableView insertSubview:mySubview atIndex:2];
myTableView.insertSubview(mySubview, atIndex: 2)](https://image.slidesharecdn.com/swift-objc-151103000226-lva1-app6891/75/Swift-Objective-C-Interop-12-2048.jpg)
![NSOBJECT SUBCLASSES
class SimpleNSObject: NSObject {
}
#import "InteropTest-Swift.h"
- (void)test {
SimpleNSObject *simple2 = [[SimpleNSObject alloc] init];
}](https://image.slidesharecdn.com/swift-objc-151103000226-lva1-app6891/75/Swift-Objective-C-Interop-18-2048.jpg)
![SWIFT ROOT CLASS
@objc public class Simple {
public class func newInstance() -> Simple {
return Simple()
}
}
#import "InteropTest-Swift.h"
- (void)test {
Simple *simple = [Simple newInstance];
}](https://image.slidesharecdn.com/swift-objc-151103000226-lva1-app6891/75/Swift-Objective-C-Interop-19-2048.jpg)
Uploaded byMake School
Swift Objective-C Interop
This document discusses combining Swift and Objective-C code. It covers importing Objective-C frameworks and classes into Swift projects, calling Objective-C code from Swift, and enabling Objective-C features in Swift classes through the dynamic keyword. The document also discusses calling Swift code from Objective-C by generating a bridging header, and how to define Swift classes and properties for Objective-C compatibility.
More Related Content
Swift Objective-C Interop
- 2.
- 3. AGENDA Using Objective-C fromSwift Using Swift from Objective-C Objective-C Behavior in Swift Classes
- 4.
- 5. APPLE FRAMEWORKS No additionalsetup required! import UIKit import Foundation
- 6. OBJECTIVE-C WITHIN SAMETARGET Add Objective-C files to the Bridging-Header Bridging-Header needs to be referenced in build settings Project- Bridging- Header.h A.swift B.swift MyObj.h Car.h MyObj.m Car.m
- 7. THIRD PARTY FRAMEWORKS Ifframework is built as a module: No additional setup required import Parse
- 8. THIRD PARTY FRAMEWORKS Ifframework is written in Obj-C And framework is not built as a module Add framework header to bridging-header: #ifndef Makestagram_Makestagram_Bridging_Header_h #define Makestagram_Makestagram_Bridging_Header_h #import <Parse/Parse.h> #endif
- 9.
- 10. CALLING OBJ-C FROMSWIFT Most syntax translates almost 1-1 Special rules for initializers
- 11. INITIALIZERS [[UITableView alloc] initWithFrame:CGRectZerostyle:UITableViewStyleGrouped]; UITableView(frame: CGRectZero, style: .Grouped) [UIColor colorWithRed:0.5 green:0.0 blue:0.5 alpha:1.0]; UIColor(red: 0.5, green: 0.0, blue: 0.5, alpha: 1.0)
- 12.
- 13.
- 14. OPTIONALITY IN OBJ-C Sincelatest release of Objective-C we can specify whether values can be nil or not For unaudited APIs: Implicitly unwrapped Optionals by default!
- 15. OPTIONALITY IN OBJ-C //unaudited version -> generates warning + (UIView *)createViewWithName:(NSString *)name; // return value and argument are non-optional + (__nonnull UIView *)createViewWithNameSwiftier:(__nonnull NSString *)name; // return value and argument are optional + (__nullable UIView *)createViewWithNameSwiftierNullable:(__nullable NSString *)name;
- 16.
- 17. SWIFT WITHIN SAMETARGET AppName -Swift.h A.swift B.swift MyObj.h Car.h MyObj.m Car.m
- 18. NSOBJECT SUBCLASSES class SimpleNSObject:NSObject { } #import "InteropTest-Swift.h" - (void)test { SimpleNSObject *simple2 = [[SimpleNSObject alloc] init]; }
- 19. SWIFT ROOT CLASS @objcpublic class Simple { public class func newInstance() -> Simple { return Simple() } } #import "InteropTest-Swift.h" - (void)test { Simple *simple = [Simple newInstance]; }
- 20.
- 21. OBJECTIVE-C BEHAVIOR IN SWIFTCLASSES class User { dynamic var name: String dynamic func setUp() { //... } } Use the dynamic keyword to enable Objective-C features such as KVO and performSelector:
- 22. ADDITIONAL RESOURCES Using Swiftwith Cocoa and Objective-C (Apple) Mike Ash Talk: Swift and C Russ Bishop Talk: Unsafe Swift