echo plugin

https://capacitorjs.com/docs/ios/custom-code

ios/App/App.xcodeproj/project.pbxproj

@@ -8,6 +8,8 @@
 
 /* Begin PBXBuildFile section */
 		2FAD9763203C412B000D30F8 /* config.xml in Resources */ = {isa = PBXBuildFile; fileRef = 2FAD9762203C412B000D30F8 /* config.xml */; };
+		3A0D18CA2BCEE83000D03305 /* EchoPlugin.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A0D18C92BCEE83000D03305 /* EchoPlugin.swift */; };
+		3A0D18CD2BCEE86800D03305 /* EchoPlugin.m in Sources */ = {isa = PBXBuildFile; fileRef = 3A0D18CC2BCEE86800D03305 /* EchoPlugin.m */; };
 		4D22ABE92AF431CB00220026 /* CapApp-SPM in Frameworks */ = {isa = PBXBuildFile; productRef = 4D22ABE82AF431CB00220026 /* CapApp-SPM */; };
 		50379B232058CBB4000EE86E /* capacitor.config.json in Resources */ = {isa = PBXBuildFile; fileRef = 50379B222058CBB4000EE86E /* capacitor.config.json */; };
 		504EC3081FED79650016851F /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 504EC3071FED79650016851F /* AppDelegate.swift */; };
@@ -19,6 +21,9 @@
 
 /* Begin PBXFileReference section */
 		2FAD9762203C412B000D30F8 /* config.xml */ = {isa = PBXFileReference; lastKnownFileType = text.xml; path = config.xml; sourceTree = "<group>"; };
+		3A0D18C92BCEE83000D03305 /* EchoPlugin.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EchoPlugin.swift; sourceTree = "<group>"; };
+		3A0D18CB2BCEE86700D03305 /* App-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "App-Bridging-Header.h"; sourceTree = "<group>"; };
+		3A0D18CC2BCEE86800D03305 /* EchoPlugin.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = EchoPlugin.m; sourceTree = "<group>"; };
 		50379B222058CBB4000EE86E /* capacitor.config.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = capacitor.config.json; sourceTree = "<group>"; };
 		504EC3041FED79650016851F /* App.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = App.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		504EC3071FED79650016851F /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
@@ -60,13 +65,16 @@
 		504EC3061FED79650016851F /* App */ = {
 			isa = PBXGroup;
 			children = (
-				50379B222058CBB4000EE86E /* capacitor.config.json */,
+				3A0D18CB2BCEE86700D03305 /* App-Bridging-Header.h */,
 				504EC3071FED79650016851F /* AppDelegate.swift */,
-				504EC30B1FED79650016851F /* Main.storyboard */,
 				504EC30E1FED79650016851F /* Assets.xcassets */,
-				504EC3101FED79650016851F /* LaunchScreen.storyboard */,
-				504EC3131FED79650016851F /* Info.plist */,
+				50379B222058CBB4000EE86E /* capacitor.config.json */,
 				2FAD9762203C412B000D30F8 /* config.xml */,
+				3A0D18CC2BCEE86800D03305 /* EchoPlugin.m */,
+				3A0D18C92BCEE83000D03305 /* EchoPlugin.swift */,
+				504EC3131FED79650016851F /* Info.plist */,
+				504EC3101FED79650016851F /* LaunchScreen.storyboard */,
+				504EC30B1FED79650016851F /* Main.storyboard */,
 				50B271D01FEDC1A000F3C39B /* public */,
 			);
 			path = App;
@@ -106,7 +114,7 @@
 				TargetAttributes = {
 					504EC3031FED79650016851F = {
 						CreatedOnToolsVersion = 9.2;
-						LastSwiftMigration = 1100;
+						LastSwiftMigration = 1530;
 						ProvisioningStyle = Automatic;
 					};
 				};
@@ -154,6 +162,8 @@
 			buildActionMask = 2147483647;
 			files = (
 				504EC3081FED79650016851F /* AppDelegate.swift in Sources */,
+				3A0D18CA2BCEE83000D03305 /* EchoPlugin.swift in Sources */,
+				3A0D18CD2BCEE86800D03305 /* EchoPlugin.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -291,8 +301,10 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = EW3E677XMJ;
 				INFOPLIST_FILE = App/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -304,6 +316,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = me.begehr.capacitorsample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+				SWIFT_OBJC_BRIDGING_HEADER = "App/App-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
@@ -313,8 +327,10 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = EW3E677XMJ;
 				INFOPLIST_FILE = App/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -325,6 +341,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = me.begehr.capacitorsample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "";
+				SWIFT_OBJC_BRIDGING_HEADER = "App/App-Bridging-Header.h";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};

ios/App/App.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,15 @@
+{
+  "originHash" : "cc5c8fd0002bb367887e77c3546d22b9a24af4298dae9781fb5085dc16409e10",
+  "pins" : [
+    {
+      "identity" : "capacitor-swift-pm",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/ionic-team/capacitor-swift-pm.git",
+      "state" : {
+        "branch" : "main",
+        "revision" : "8a46dff3a8292761df1bded13a508da1c85859e8"
+      }
+    }
+  ],
+  "version" : 3
+}

ios/App/App/App-Bridging-Header.h

@@ -0,0 +1,4 @@
+//
+//  Use this file to import your target's public headers that you would like to expose to Swift.
+//
+

ios/App/App/EchoPlugin.m

@@ -0,0 +1,13 @@
+//
+//  EchoPlugin.m
+//  App
+//
+//  Created by Anton Begehr on 16.04.24.
+//
+
+#import <Foundation/Foundation.h>
+#import <Capacitor/Capacitor.h>
+
+CAP_PLUGIN(EchoPlugin, "Echo",
+    CAP_PLUGIN_METHOD(echo, CAPPluginReturnPromise);
+)

ios/App/App/EchoPlugin.swift

@@ -0,0 +1,22 @@
+//
+//  EchoPlugin.swift
+//  App
+//
+//  Created by Anton Begehr on 16.04.24.
+//
+
+import Capacitor
+
+@objc(EchoPlugin)
+public class EchoPlugin: CAPPlugin {
+    @objc override public func load() {
+        debugPrint("EchoPlugin.load()")
+    }
+
+    @objc func echo(_ call: CAPPluginCall) {
+        debugPrint("EchoPlugin.echo()")
+        let value = call.getString("value") ?? ""
+        debugPrint("EchoPlugin.echo - value: \(value)")
+        call.resolve(["value": value])
+    }
+}

src/js/capacitor-welcome.js

@@ -1,15 +1,19 @@
-import { SplashScreen } from '@capacitor/splash-screen';
-import { Camera } from '@capacitor/camera';
+import { SplashScreen } from "@capacitor/splash-screen";
+import { Camera } from "@capacitor/camera";
+import Echo from "./echo";
+
+const { value } = await Echo.echo({ value: "Hello World!" });
+console.log("Response from native:", value);
 
 window.customElements.define(
-  'capacitor-welcome',
+  "capacitor-welcome",
   class extends HTMLElement {
     constructor() {
       super();
 
       SplashScreen.hide();
 
-      const root = this.attachShadow({ mode: 'open' });
+      const root = this.attachShadow({ mode: "open" });
 
       root.innerHTML = `
     <style>
@@ -92,32 +96,37 @@ window.customElements.define(
     connectedCallback() {
       const self = this;
 
-      self.shadowRoot.querySelector('#take-photo').addEventListener('click', async function (e) {
-        try {
-          const photo = await Camera.getPhoto({
-            resultType: 'uri',
-          });
+      self.shadowRoot
+        .querySelector("#take-photo")
+        .addEventListener("click", async function (e) {
+          try {
+            const { value } = await Echo.echo({ value: "Take photo!" });
+            console.log("Response from native:", value);
 
-          const image = self.shadowRoot.querySelector('#image');
-          if (!image) {
-            return;
-          }
+            const photo = await Camera.getPhoto({
+              resultType: "uri",
+            });
 
-          image.src = photo.webPath;
-        } catch (e) {
-          console.warn('User cancelled', e);
-        }
-      });
+            const image = self.shadowRoot.querySelector("#image");
+            if (!image) {
+              return;
+            }
+
+            image.src = photo.webPath;
+          } catch (e) {
+            console.warn("User cancelled", e);
+          }
+        });
     }
   }
 );
 
 window.customElements.define(
-  'capacitor-welcome-titlebar',
+  "capacitor-welcome-titlebar",
   class extends HTMLElement {
     constructor() {
       super();
-      const root = this.attachShadow({ mode: 'open' });
+      const root = this.attachShadow({ mode: "open" });
       root.innerHTML = `
     <style>
       :host {

src/js/echo.js

@@ -0,0 +1,5 @@
+import { registerPlugin } from "@capacitor/core";
+
+const Echo = registerPlugin("Echo");
+
+export default Echo;