I’m trying to create a custom iOS plugin for an app built with Ionic + Capacitor 7. I migrated from Capacitor 5 to Capacitor 7.

Sources:

https://capacitorjs.com/docs/ios/custom-code#register-the-plugin

"App" Plugin Not Implemented on iOS After Upgrading Capacitor to Version 6

I followed the official documentation and created the Swift files inside ios/App/App/Sources/EchoPlugin/:

Echo.swift

import Foundation

@objc public class Echo: NSObject {
    @objc public func echo(_ value: String) -> String {
        print(value)
        return value
    }
}

EchoPlugin.swift

import Foundation
import Capacitor

@objc(EchoPlugin)
public class EchoPlugin: CAPPlugin, CAPBridgedPlugin {
    public let identifier = "EchoPlugin"
    public let jsName = "Echo"
    public let pluginMethods: [CAPPluginMethod] = [
        CAPPluginMethod(name: "echo", returnType: CAPPluginReturnPromise)
    ]

    private let implementation = Echo()

    @objc func echo(_ call: CAPPluginCall) {
        let value = call.getString("value") ?? ""
        call.resolve([
            "value": implementation.echo(value)
        ])
    }
}

MainViewController.swift

import UIKit
import Capacitor

class MainViewController: CAPBridgeViewController {
    override open func capacitorDidLoad() {
        bridge?.registerPluginInstance(EchoPlugin())
    }
}

And on the TypeScript side (src/app/plugins/EchoPlugin/index.ts):

import { registerPlugin } from '@capacitor/core';

export interface EchoPlugin {
  echo(options: { value: string }): Promise<{ value: string }>;
}

const Echo = registerPlugin<EchoPlugin>('Echo');

export default Echo;

When I call it from my app:

try {
      console.log('--- Testing Echo Plugin ---');
      
      const { value } = await Echo.echo({ value: 'Hello World!' });
      console.log('Response from native:', value);
    } catch (error) {
      console.error('Error calling Echo plugin:', error);
      
    }

Echo plugin is not implemented on ios

Is there any additional step required in Capacitor 7 for a local iOS plugin to be detected? Were there changes in how plugins are manually registered between Capacitor 5 and 7?

I have modified my MainViewController, but it never launches, so I cannot see this message.

import UIKit import Capacitor

class MainViewController: CAPBridgeViewController {

override open func capacitorDidLoad() {
  print(">>> EchoPlugin registrado en capacitorDidLoad")
  bridge?.registerPluginInstance(EchoPlugin().self)
  print(">>> EchoPlugin registrado en capacitorDidLoad")
}

}

If tried in Appdelegate: bridge = CAPBridge(self.window!) print("AppDelegate: didFinishLaunchingWithOptions")

    CAPBridge.registerPlugin(EchoPlugin.self) 

Show me 2 errors

Argument passed to call that takes no arguments

Type 'CAPBridge' has no member 'registerPlugin'