How to create an interface in Swift

Question

i want to create functionality like interface in swift, my goal is when i call another class suppose i'm calling API and the response of that class i want to reflect in to my current screen, in android interface is used to achieve but what should i use in swift for that? can anyone help me with example. the code for android is given below...

public class ExecuteServerReq {
    public GetResponse getResponse = null;

    public void somemethod() {
        getResponse.onResponse(Response);
    } 
    public interface GetResponse {
        void onResponse(String objects);
    }
}


ExecuteServerReq executeServerReq = new ExecuteServerReq();

executeServerReq.getResponse = new ExecuteServerReq.GetResponse() {
    @Override
    public void onResponse(String objects) {
    }
}

in swift protocol works as interface.Google protocol in swift. — Tushar Sharma
– Tushar Sharma, Commented Aug 31, 2017 at 5:52
@Jaypraksh Sing countless tutorials and solutions on stack are already present please google . — Tushar Sharma
– Tushar Sharma, Commented Aug 31, 2017 at 5:56

Surjeet Rajput · Accepted Answer · 2017-08-31 05:58:11Z

41

Instead of interface swift have Protocols.

A protocol defines a blueprint of methods, properties, and other requirements that suit a particular task or piece of functionality. The protocol can then be adopted by a class, structure, or enumeration to provide an actual implementation of those requirements. Any type that satisfies the requirements of a protocol is said to conform to that protocol.

lets take an exam .

protocol Animal {
    func canSwim() -> Bool
}

and we have a class that confirm this protocol name Animal

class Human : Animal {
   func canSwim() -> Bool {
     return true
   }
}

for more go to - https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/Protocols.html

answered Aug 31, 2017 at 5:58

Surjeet Rajput

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maxmitz · Accepted Answer · 2022-12-15 12:56:22Z

8

You are looking for `Protocols'. Interfaces are the same as protocols in Swift.

protocol Shape {
    func shapeName() -> String
}

class Circle: Shape {
    func shapeName() -> String {
        return "circle"
    }
  
}

class Triangle: Shape {
    func shapeName() -> String {
        return "triangle"
    }
}

class and struct both can implements the protocol.

edited Dec 15, 2022 at 12:56

maxmitz

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answered Aug 31, 2017 at 9:44

Jaydeep Vora

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