CODEWITHSUNDEEP
iosxcodeswiftinterfacecode-generation
Sweeper
Sweeper

Reputation: 272760

How to make Xcode automatically conform to a protocol

When I use a prototype table view, I always have to conform to the protocol TableViewDataSource. I always forget what methods I need to implement, so I have to look at the source of the protocol every time. This is really time consuming.

I think Xcode must have a feature that automatically implements the needed methods for you, right? Just like IntelliJ IDEA, Eclipse, and Visual Studio.

I want to know where can I find this feature. If there's isn't, is there a workaround for this? At least I don't have to open the source code of the protocol each time I conform to it.

If you don't understand what I mean, here's some code:

I have a protocol

protocol Hello {
    func doStuff ()
}

When I conform to it,

class MyClass: Hello {

}

I often don't remember the names of the methods that I need to implement. If Xcode has a feature that turns the above code, into this:

class MyClass: Hello {
    func doStuff () {
        code
    }
}

Now you understand what I mean? I just want to ask where to find such a feature.

Upvotes: 24

Views: 16215

Answers (5)

Maschina
Maschina

Reputation: 926

Very similar to Amjad's post, Xcode 9/10 brings the functionality to add missing protocol requirements right from within the code editor.

Just "right click" on the class name: "Refactor" --> "Add Missing Protocol Requirements" enter image description here

Upvotes: 3

Amjad Tubasi
Amjad Tubasi

Reputation: 382

Xcode 9 : you can add missing Protocol Requirements by add new shortcut to your Key Bindings Set

  1. From the top Xcode menu (top left) choose Preferences.
  2. Choose Key Binding.
  3. Search about protocol. you will find Command called Refactor -> Add Missing Protocol Requirements
  4. Press on Key column then add your shortcut. ex: cmd + shift + M

Now you can add missing Protocol Requirements by clicking on class name name (or his extension) then press your shortcut

enter image description here

Upvotes: 15

Krunal
Krunal

Reputation: 79726

Xcode 9, takes care of implementation of mandatory methods of Swift Datasource & Delegates.

Look at these snapshots, with example of UICollectionViewDataSource:

Indicating warning to implement protocol methods:

enter image description here

By clicking on 'Fix' button, it has added all mandatory methods:

enter image description here

Upvotes: 6

chedabob
chedabob

Reputation: 5881

Xcode won't do it for you.

If you look at the documentation for the protocol, it's clearly marked which functions you have to implement:

https://developer.apple.com/library/ios/documentation/UIKit/Reference/UITableViewDataSource_Protocol/

Upvotes: -3

Hamza Ansari
Hamza Ansari

Reputation: 3084

Well if i understood your problem then here is a workaround:

try to define methods with protocol as prefix like here hello then you'll not have to remember the methods just start typing protocol name and XCODE will prompt you with all available methods see here:

enter image description here

And if you want autocomplete protocol try Snippets

Upvotes: 7

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