init

build/android/Taskfile.yml

@@ -0,0 +1,237 @@
+version: '3'
+
+includes:
+  common: ../Taskfile.yml
+
+vars:
+  APP_ID: '{{.APP_ID | default "com.wails.app"}}'
+  MIN_SDK: '21'
+  TARGET_SDK: '34'
+  NDK_VERSION: 'r26d'
+
+tasks:
+  install:deps:
+    summary: Check and install Android development dependencies
+    cmds:
+      - go run build/android/scripts/deps/install_deps.go
+    env:
+      TASK_FORCE_YES: '{{if .YES}}true{{else}}false{{end}}'
+    prompt: This will check and install Android development dependencies. Continue?
+
+  build:
+    summary: Creates a build of the application for Android
+    deps:
+      - task: common:go:mod:tidy
+      - task: generate:android:bindings
+        vars:
+          BUILD_FLAGS:
+            ref: .BUILD_FLAGS
+      - task: common:build:frontend
+        vars:
+          BUILD_FLAGS:
+            ref: .BUILD_FLAGS
+          PRODUCTION:
+            ref: .PRODUCTION
+      - task: common:generate:icons
+    cmds:
+      - echo "Building Android app {{.APP_NAME}}..."
+      - task: compile:go:shared
+        vars:
+          ARCH: '{{.ARCH | default "arm64"}}'
+    vars:
+      BUILD_FLAGS: '{{if eq .PRODUCTION "true"}}-tags production,android -trimpath -buildvcs=false -ldflags="-w -s"{{else}}-tags android,debug -buildvcs=false -gcflags=all="-l"{{end}}'
+    env:
+      PRODUCTION: '{{.PRODUCTION | default "false"}}'
+
+  compile:go:shared:
+    summary: Compile Go code to shared library (.so)
+    cmds:
+      - |
+        NDK_ROOT="${ANDROID_NDK_HOME:-$ANDROID_HOME/ndk/{{.NDK_VERSION}}}"
+        if [ ! -d "$NDK_ROOT" ]; then
+          echo "Error: Android NDK not found at $NDK_ROOT"
+          echo "Please set ANDROID_NDK_HOME or install NDK {{.NDK_VERSION}} via Android Studio"
+          exit 1
+        fi
+
+        # Determine toolchain based on host OS
+        case "$(uname -s)" in
+          Darwin) HOST_TAG="darwin-x86_64" ;;
+          Linux)  HOST_TAG="linux-x86_64" ;;
+          *)      echo "Unsupported host OS"; exit 1 ;;
+        esac
+
+        TOOLCHAIN="$NDK_ROOT/toolchains/llvm/prebuilt/$HOST_TAG"
+
+        # Set compiler based on architecture
+        case "{{.ARCH}}" in
+          arm64)
+            export CC="$TOOLCHAIN/bin/aarch64-linux-android{{.MIN_SDK}}-clang"
+            export CXX="$TOOLCHAIN/bin/aarch64-linux-android{{.MIN_SDK}}-clang++"
+            export GOARCH=arm64
+            JNI_DIR="arm64-v8a"
+            ;;
+          amd64|x86_64)
+            export CC="$TOOLCHAIN/bin/x86_64-linux-android{{.MIN_SDK}}-clang"
+            export CXX="$TOOLCHAIN/bin/x86_64-linux-android{{.MIN_SDK}}-clang++"
+            export GOARCH=amd64
+            JNI_DIR="x86_64"
+            ;;
+          *)
+            echo "Unsupported architecture: {{.ARCH}}"
+            exit 1
+            ;;
+        esac
+
+        export CGO_ENABLED=1
+        export GOOS=android
+
+        mkdir -p {{.BIN_DIR}}
+        mkdir -p build/android/app/src/main/jniLibs/$JNI_DIR
+
+        go build -buildmode=c-shared {{.BUILD_FLAGS}} \
+          -o build/android/app/src/main/jniLibs/$JNI_DIR/libwails.so
+    vars:
+      BUILD_FLAGS: '{{if eq .PRODUCTION "true"}}-tags production,android -trimpath -buildvcs=false -ldflags="-w -s"{{else}}-tags android,debug -buildvcs=false -gcflags=all="-l"{{end}}'
+
+  compile:go:all-archs:
+    summary: Compile Go code for all Android architectures (fat APK)
+    cmds:
+      - task: compile:go:shared
+        vars:
+          ARCH: arm64
+      - task: compile:go:shared
+        vars:
+          ARCH: amd64
+
+  package:
+    summary: Packages a production build of the application into an APK
+    deps:
+      - task: build
+        vars:
+          PRODUCTION: "true"
+    cmds:
+      - task: assemble:apk
+
+  package:fat:
+    summary: Packages a production build for all architectures (fat APK)
+    cmds:
+      - task: compile:go:all-archs
+      - task: assemble:apk
+
+  assemble:apk:
+    summary: Assembles the APK using Gradle
+    cmds:
+      - |
+        cd build/android
+        ./gradlew assembleDebug
+        cp app/build/outputs/apk/debug/app-debug.apk "../../{{.BIN_DIR}}/{{.APP_NAME}}.apk"
+        echo "APK created: {{.BIN_DIR}}/{{.APP_NAME}}.apk"
+
+  assemble:apk:release:
+    summary: Assembles a release APK using Gradle
+    cmds:
+      - |
+        cd build/android
+        ./gradlew assembleRelease
+        cp app/build/outputs/apk/release/app-release-unsigned.apk "../../{{.BIN_DIR}}/{{.APP_NAME}}-release.apk"
+        echo "Release APK created: {{.BIN_DIR}}/{{.APP_NAME}}-release.apk"
+
+  generate:android:bindings:
+    internal: true
+    summary: Generates bindings for Android
+    sources:
+      - "**/*.go"
+      - go.mod
+      - go.sum
+    generates:
+      - frontend/bindings/**/*
+    cmds:
+      - wails3 generate bindings -f '{{.BUILD_FLAGS}}' -clean=true
+    env:
+      GOOS: android
+      CGO_ENABLED: 1
+      GOARCH: '{{.ARCH | default "arm64"}}'
+
+  ensure-emulator:
+    internal: true
+    summary: Ensure Android Emulator is running
+    silent: true
+    cmds:
+      - |
+        # Check if an emulator is already running
+        if adb devices | grep -q "emulator"; then
+          echo "Emulator already running"
+          exit 0
+        fi
+
+        # Get first available AVD
+        AVD_NAME=$(emulator -list-avds | head -1)
+        if [ -z "$AVD_NAME" ]; then
+          echo "No Android Virtual Devices found."
+          echo "Create one using: Android Studio > Tools > Device Manager"
+          exit 1
+        fi
+
+        echo "Starting emulator: $AVD_NAME"
+        emulator -avd "$AVD_NAME" -no-snapshot-load &
+
+        # Wait for emulator to boot (max 60 seconds)
+        echo "Waiting for emulator to boot..."
+        adb wait-for-device
+
+        for i in {1..60}; do
+          BOOT_COMPLETED=$(adb shell getprop sys.boot_completed 2>/dev/null | tr -d '\r')
+          if [ "$BOOT_COMPLETED" = "1" ]; then
+            echo "Emulator booted successfully"
+            exit 0
+          fi
+          sleep 1
+        done
+
+        echo "Emulator boot timeout"
+        exit 1
+    preconditions:
+      - sh: command -v adb
+        msg: "adb not found. Please install Android SDK and add platform-tools to PATH"
+      - sh: command -v emulator
+        msg: "emulator not found. Please install Android SDK and add emulator to PATH"
+
+  deploy-emulator:
+    summary: Deploy to Android Emulator
+    deps: [package]
+    cmds:
+      - adb uninstall {{.APP_ID}} 2>/dev/null || true
+      - adb install "{{.BIN_DIR}}/{{.APP_NAME}}.apk"
+      - adb shell am start -n {{.APP_ID}}/.MainActivity
+
+  run:
+    summary: Run the application in Android Emulator
+    deps:
+      - task: ensure-emulator
+      - task: build
+        vars:
+          ARCH: x86_64
+    cmds:
+      - task: assemble:apk
+      - adb uninstall {{.APP_ID}} 2>/dev/null || true
+      - adb install "{{.BIN_DIR}}/{{.APP_NAME}}.apk"
+      - adb shell am start -n {{.APP_ID}}/.MainActivity
+
+  logs:
+    summary: Stream Android logcat filtered to this app
+    cmds:
+      - adb logcat -v time | grep -E "(Wails|{{.APP_NAME}})"
+
+  logs:all:
+    summary: Stream all Android logcat (verbose)
+    cmds:
+      - adb logcat -v time
+
+  clean:
+    summary: Clean build artifacts
+    cmds:
+      - rm -rf {{.BIN_DIR}}
+      - rm -rf build/android/app/build
+      - rm -rf build/android/app/src/main/jniLibs/*/libwails.so
+      - rm -rf build/android/.gradle

build/android/app/build.gradle

@@ -0,0 +1,63 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    namespace 'com.wails.app'
+    compileSdk 34
+
+    buildFeatures {
+        buildConfig = true
+    }
+
+    defaultConfig {
+        applicationId "com.wails.app"
+        minSdk 21
+        targetSdk 34
+        versionCode 1
+        versionName "1.0"
+
+        // Configure supported ABIs
+        ndk {
+            abiFilters 'arm64-v8a', 'x86_64'
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+        debug {
+            debuggable true
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
+    }
+
+    // Source sets configuration
+    sourceSets {
+        main {
+            // JNI libraries are in jniLibs folder
+            jniLibs.srcDirs = ['src/main/jniLibs']
+            // Assets for the WebView
+            assets.srcDirs = ['src/main/assets']
+        }
+    }
+
+    // Packaging options
+    packagingOptions {
+        // Don't strip Go symbols in debug builds
+        doNotStrip '*/arm64-v8a/libwails.so'
+        doNotStrip '*/x86_64/libwails.so'
+    }
+}
+
+dependencies {
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.webkit:webkit:1.9.0'
+    implementation 'com.google.android.material:material:1.11.0'
+}

build/android/app/proguard-rules.pro

@@ -0,0 +1,12 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+
+# Keep native methods
+-keepclasseswithmembernames class * {
+    native <methods>;
+}
+
+# Keep Wails bridge classes
+-keep class com.wails.app.WailsBridge { *; }
+-keep class com.wails.app.WailsJSBridge { *; }

build/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- Internet permission for WebView -->
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.WailsApp"
+        android:usesCleartextTraffic="true"
+        tools:targetApi="31">
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:configChanges="orientation|screenSize|keyboardHidden"
+            android:windowSoftInputMode="adjustResize">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

build/android/app/src/main/java/com/wails/app/MainActivity.java

@@ -0,0 +1,198 @@
+package com.wails.app;
+
+import android.annotation.SuppressLint;
+import android.os.Bundle;
+import android.util.Log;
+import android.webkit.WebResourceRequest;
+import android.webkit.WebResourceResponse;
+import android.webkit.WebSettings;
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.webkit.WebViewAssetLoader;
+import com.wails.app.BuildConfig;
+
+/**
+ * MainActivity hosts the WebView and manages the Wails application lifecycle.
+ * It uses WebViewAssetLoader to serve assets from the Go library without
+ * requiring a network server.
+ */
+public class MainActivity extends AppCompatActivity {
+    private static final String TAG = "WailsActivity";
+    private static final String WAILS_SCHEME = "https";
+    private static final String WAILS_HOST = "wails.localhost";
+
+    private WebView webView;
+    private WailsBridge bridge;
+    private WebViewAssetLoader assetLoader;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        // Initialize the native Go library
+        bridge = new WailsBridge(this);
+        bridge.initialize();
+
+        // Set up WebView
+        setupWebView();
+
+        // Load the application
+        loadApplication();
+    }
+
+    @SuppressLint("SetJavaScriptEnabled")
+    private void setupWebView() {
+        webView = findViewById(R.id.webview);
+
+        // Configure WebView settings
+        WebSettings settings = webView.getSettings();
+        settings.setJavaScriptEnabled(true);
+        settings.setDomStorageEnabled(true);
+        settings.setDatabaseEnabled(true);
+        settings.setAllowFileAccess(false);
+        settings.setAllowContentAccess(false);
+        settings.setMediaPlaybackRequiresUserGesture(false);
+        settings.setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW);
+
+        // Enable debugging in debug builds
+        if (BuildConfig.DEBUG) {
+            WebView.setWebContentsDebuggingEnabled(true);
+        }
+
+        // Set up asset loader for serving local assets
+        assetLoader = new WebViewAssetLoader.Builder()
+                .setDomain(WAILS_HOST)
+                .addPathHandler("/", new WailsPathHandler(bridge))
+                .build();
+
+        // Set up WebView client to intercept requests
+        webView.setWebViewClient(new WebViewClient() {
+            @Nullable
+            @Override
+            public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
+                String url = request.getUrl().toString();
+                Log.d(TAG, "Intercepting request: " + url);
+
+                // Handle wails.localhost requests
+                if (request.getUrl().getHost() != null &&
+                        request.getUrl().getHost().equals(WAILS_HOST)) {
+
+                    // For wails API calls (runtime, capabilities, etc.), we need to pass the full URL
+                    // including query string because WebViewAssetLoader.PathHandler strips query params
+                    String path = request.getUrl().getPath();
+                    if (path != null && path.startsWith("/wails/")) {
+                        // Get full path with query string for runtime calls
+                        String fullPath = path;
+                        String query = request.getUrl().getQuery();
+                        if (query != null && !query.isEmpty()) {
+                            fullPath = path + "?" + query;
+                        }
+                        Log.d(TAG, "Wails API call detected, full path: " + fullPath);
+
+                        // Call bridge directly with full path
+                        byte[] data = bridge.serveAsset(fullPath, request.getMethod(), "{}");
+                        if (data != null && data.length > 0) {
+                            java.io.InputStream inputStream = new java.io.ByteArrayInputStream(data);
+                            java.util.Map<String, String> headers = new java.util.HashMap<>();
+                            headers.put("Access-Control-Allow-Origin", "*");
+                            headers.put("Cache-Control", "no-cache");
+                            headers.put("Content-Type", "application/json");
+
+                            return new WebResourceResponse(
+                                "application/json",
+                                "UTF-8",
+                                200,
+                                "OK",
+                                headers,
+                                inputStream
+                            );
+                        }
+                        // Return error response if data is null
+                        return new WebResourceResponse(
+                            "application/json",
+                            "UTF-8",
+                            500,
+                            "Internal Error",
+                            new java.util.HashMap<>(),
+                            new java.io.ByteArrayInputStream("{}".getBytes())
+                        );
+                    }
+
+                    // For regular assets, use the asset loader
+                    return assetLoader.shouldInterceptRequest(request.getUrl());
+                }
+
+                return super.shouldInterceptRequest(view, request);
+            }
+
+            @Override
+            public void onPageFinished(WebView view, String url) {
+                super.onPageFinished(view, url);
+                Log.d(TAG, "Page loaded: " + url);
+                // Inject Wails runtime
+                bridge.injectRuntime(webView, url);
+            }
+        });
+
+        // Add JavaScript interface for Go communication
+        webView.addJavascriptInterface(new WailsJSBridge(bridge, webView), "wails");
+    }
+
+    private void loadApplication() {
+        // Load the main page from the asset server
+        String url = WAILS_SCHEME + "://" + WAILS_HOST + "/";
+        Log.d(TAG, "Loading URL: " + url);
+        webView.loadUrl(url);
+    }
+
+    /**
+     * Execute JavaScript in the WebView from the Go side
+     */
+    public void executeJavaScript(final String js) {
+        runOnUiThread(() -> {
+            if (webView != null) {
+                webView.evaluateJavascript(js, null);
+            }
+        });
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        if (bridge != null) {
+            bridge.onResume();
+        }
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        if (bridge != null) {
+            bridge.onPause();
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (bridge != null) {
+            bridge.shutdown();
+        }
+        if (webView != null) {
+            webView.destroy();
+        }
+    }
+
+    @Override
+    public void onBackPressed() {
+        if (webView != null && webView.canGoBack()) {
+            webView.goBack();
+        } else {
+            super.onBackPressed();
+        }
+    }
+}

build/android/app/src/main/java/com/wails/app/WailsBridge.java

@@ -0,0 +1,214 @@
+package com.wails.app;
+
+import android.content.Context;
+import android.util.Log;
+import android.webkit.WebView;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * WailsBridge manages the connection between the Java/Android side and the Go native library.
+ * It handles:
+ * - Loading and initializing the native Go library
+ * - Serving asset requests from Go
+ * - Passing messages between JavaScript and Go
+ * - Managing callbacks for async operations
+ */
+public class WailsBridge {
+    private static final String TAG = "WailsBridge";
+
+    static {
+        // Load the native Go library
+        System.loadLibrary("wails");
+    }
+
+    private final Context context;
+    private final AtomicInteger callbackIdGenerator = new AtomicInteger(0);
+    private final ConcurrentHashMap<Integer, AssetCallback> pendingAssetCallbacks = new ConcurrentHashMap<>();
+    private final ConcurrentHashMap<Integer, MessageCallback> pendingMessageCallbacks = new ConcurrentHashMap<>();
+    private WebView webView;
+    private volatile boolean initialized = false;
+
+    // Native methods - implemented in Go
+    private static native void nativeInit(WailsBridge bridge);
+    private static native void nativeShutdown();
+    private static native void nativeOnResume();
+    private static native void nativeOnPause();
+    private static native void nativeOnPageFinished(String url);
+    private static native byte[] nativeServeAsset(String path, String method, String headers);
+    private static native String nativeHandleMessage(String message);
+    private static native String nativeGetAssetMimeType(String path);
+
+    public WailsBridge(Context context) {
+        this.context = context;
+    }
+
+    /**
+     * Initialize the native Go library
+     */
+    public void initialize() {
+        if (initialized) {
+            return;
+        }
+
+        Log.i(TAG, "Initializing Wails bridge...");
+        try {
+            nativeInit(this);
+            initialized = true;
+            Log.i(TAG, "Wails bridge initialized successfully");
+        } catch (Exception e) {
+            Log.e(TAG, "Failed to initialize Wails bridge", e);
+        }
+    }
+
+    /**
+     * Shutdown the native Go library
+     */
+    public void shutdown() {
+        if (!initialized) {
+            return;
+        }
+
+        Log.i(TAG, "Shutting down Wails bridge...");
+        try {
+            nativeShutdown();
+            initialized = false;
+        } catch (Exception e) {
+            Log.e(TAG, "Error during shutdown", e);
+        }
+    }
+
+    /**
+     * Called when the activity resumes
+     */
+    public void onResume() {
+        if (initialized) {
+            nativeOnResume();
+        }
+    }
+
+    /**
+     * Called when the activity pauses
+     */
+    public void onPause() {
+        if (initialized) {
+            nativeOnPause();
+        }
+    }
+
+    /**
+     * Serve an asset from the Go asset server
+     * @param path The URL path requested
+     * @param method The HTTP method
+     * @param headers The request headers as JSON
+     * @return The asset data, or null if not found
+     */
+    public byte[] serveAsset(String path, String method, String headers) {
+        if (!initialized) {
+            Log.w(TAG, "Bridge not initialized, cannot serve asset: " + path);
+            return null;
+        }
+
+        Log.d(TAG, "Serving asset: " + path);
+        try {
+            return nativeServeAsset(path, method, headers);
+        } catch (Exception e) {
+            Log.e(TAG, "Error serving asset: " + path, e);
+            return null;
+        }
+    }
+
+    /**
+     * Get the MIME type for an asset
+     * @param path The asset path
+     * @return The MIME type string
+     */
+    public String getAssetMimeType(String path) {
+        if (!initialized) {
+            return "application/octet-stream";
+        }
+
+        try {
+            String mimeType = nativeGetAssetMimeType(path);
+            return mimeType != null ? mimeType : "application/octet-stream";
+        } catch (Exception e) {
+            Log.e(TAG, "Error getting MIME type for: " + path, e);
+            return "application/octet-stream";
+        }
+    }
+
+    /**
+     * Handle a message from JavaScript
+     * @param message The message from JavaScript (JSON)
+     * @return The response to send back to JavaScript (JSON)
+     */
+    public String handleMessage(String message) {
+        if (!initialized) {
+            Log.w(TAG, "Bridge not initialized, cannot handle message");
+            return "{\"error\":\"Bridge not initialized\"}";
+        }
+
+        Log.d(TAG, "Handling message from JS: " + message);
+        try {
+            return nativeHandleMessage(message);
+        } catch (Exception e) {
+            Log.e(TAG, "Error handling message", e);
+            return "{\"error\":\"" + e.getMessage() + "\"}";
+        }
+    }
+
+    /**
+     * Inject the Wails runtime JavaScript into the WebView.
+     * Called when the page finishes loading.
+     * @param webView The WebView to inject into
+     * @param url The URL that finished loading
+     */
+    public void injectRuntime(WebView webView, String url) {
+        this.webView = webView;
+        // Notify Go side that page has finished loading so it can inject the runtime
+        Log.d(TAG, "Page finished loading: " + url + ", notifying Go side");
+        if (initialized) {
+            nativeOnPageFinished(url);
+        }
+    }
+
+    /**
+     * Execute JavaScript in the WebView (called from Go side)
+     * @param js The JavaScript code to execute
+     */
+    public void executeJavaScript(String js) {
+        if (webView != null) {
+            webView.post(() -> webView.evaluateJavascript(js, null));
+        }
+    }
+
+    /**
+     * Called from Go when an event needs to be emitted to JavaScript
+     * @param eventName The event name
+     * @param eventData The event data (JSON)
+     */
+    public void emitEvent(String eventName, String eventData) {
+        String js = String.format("window.wails && window.wails._emit('%s', %s);",
+                escapeJsString(eventName), eventData);
+        executeJavaScript(js);
+    }
+
+    private String escapeJsString(String str) {
+        return str.replace("\\", "\\\\")
+                .replace("'", "\\'")
+                .replace("\n", "\\n")
+                .replace("\r", "\\r");
+    }
+
+    // Callback interfaces
+    public interface AssetCallback {
+        void onAssetReady(byte[] data, String mimeType);
+        void onAssetError(String error);
+    }
+
+    public interface MessageCallback {
+        void onResponse(String response);
+        void onError(String error);
+    }
+}

build/android/app/src/main/java/com/wails/app/WailsJSBridge.java

@@ -0,0 +1,142 @@
+package com.wails.app;
+
+import android.util.Log;
+import android.webkit.JavascriptInterface;
+import android.webkit.WebView;
+import com.wails.app.BuildConfig;
+
+/**
+ * WailsJSBridge provides the JavaScript interface that allows the web frontend
+ * to communicate with the Go backend. This is exposed to JavaScript as the
+ * `window.wails` object.
+ *
+ * Similar to iOS's WKScriptMessageHandler but using Android's addJavascriptInterface.
+ */
+public class WailsJSBridge {
+    private static final String TAG = "WailsJSBridge";
+
+    private final WailsBridge bridge;
+    private final WebView webView;
+
+    public WailsJSBridge(WailsBridge bridge, WebView webView) {
+        this.bridge = bridge;
+        this.webView = webView;
+    }
+
+    /**
+     * Send a message to Go and return the response synchronously.
+     * Called from JavaScript: wails.invoke(message)
+     *
+     * @param message The message to send (JSON string)
+     * @return The response from Go (JSON string)
+     */
+    @JavascriptInterface
+    public String invoke(String message) {
+        Log.d(TAG, "Invoke called: " + message);
+        return bridge.handleMessage(message);
+    }
+
+    /**
+     * Send a message to Go asynchronously.
+     * The response will be sent back via a callback.
+     * Called from JavaScript: wails.invokeAsync(callbackId, message)
+     *
+     * @param callbackId The callback ID to use for the response
+     * @param message The message to send (JSON string)
+     */
+    @JavascriptInterface
+    public void invokeAsync(final String callbackId, final String message) {
+        Log.d(TAG, "InvokeAsync called: " + message);
+
+        // Handle in background thread to not block JavaScript
+        new Thread(() -> {
+            try {
+                String response = bridge.handleMessage(message);
+                sendCallback(callbackId, response, null);
+            } catch (Exception e) {
+                Log.e(TAG, "Error in async invoke", e);
+                sendCallback(callbackId, null, e.getMessage());
+            }
+        }).start();
+    }
+
+    /**
+     * Log a message from JavaScript to Android's logcat
+     * Called from JavaScript: wails.log(level, message)
+     *
+     * @param level The log level (debug, info, warn, error)
+     * @param message The message to log
+     */
+    @JavascriptInterface
+    public void log(String level, String message) {
+        switch (level.toLowerCase()) {
+            case "debug":
+                Log.d(TAG + "/JS", message);
+                break;
+            case "info":
+                Log.i(TAG + "/JS", message);
+                break;
+            case "warn":
+                Log.w(TAG + "/JS", message);
+                break;
+            case "error":
+                Log.e(TAG + "/JS", message);
+                break;
+            default:
+                Log.v(TAG + "/JS", message);
+                break;
+        }
+    }
+
+    /**
+     * Get the platform name
+     * Called from JavaScript: wails.platform()
+     *
+     * @return "android"
+     */
+    @JavascriptInterface
+    public String platform() {
+        return "android";
+    }
+
+    /**
+     * Check if we're running in debug mode
+     * Called from JavaScript: wails.isDebug()
+     *
+     * @return true if debug build, false otherwise
+     */
+    @JavascriptInterface
+    public boolean isDebug() {
+        return BuildConfig.DEBUG;
+    }
+
+    /**
+     * Send a callback response to JavaScript
+     */
+    private void sendCallback(String callbackId, String result, String error) {
+        final String js;
+        if (error != null) {
+            js = String.format(
+                    "window.wails && window.wails._callback('%s', null, '%s');",
+                    escapeJsString(callbackId),
+                    escapeJsString(error)
+            );
+        } else {
+            js = String.format(
+                    "window.wails && window.wails._callback('%s', %s, null);",
+                    escapeJsString(callbackId),
+                    result != null ? result : "null"
+            );
+        }
+
+        webView.post(() -> webView.evaluateJavascript(js, null));
+    }
+
+    private String escapeJsString(String str) {
+        if (str == null) return "";
+        return str.replace("\\", "\\\\")
+                .replace("'", "\\'")
+                .replace("\n", "\\n")
+                .replace("\r", "\\r");
+    }
+}

build/android/app/src/main/java/com/wails/app/WailsPathHandler.java

@@ -0,0 +1,118 @@
+package com.wails.app;
+
+import android.net.Uri;
+import android.util.Log;
+import android.webkit.WebResourceResponse;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.webkit.WebViewAssetLoader;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * WailsPathHandler implements WebViewAssetLoader.PathHandler to serve assets
+ * from the Go asset server. This allows the WebView to load assets without
+ * using a network server, similar to iOS's WKURLSchemeHandler.
+ */
+public class WailsPathHandler implements WebViewAssetLoader.PathHandler {
+    private static final String TAG = "WailsPathHandler";
+
+    private final WailsBridge bridge;
+
+    public WailsPathHandler(WailsBridge bridge) {
+        this.bridge = bridge;
+    }
+
+    @Nullable
+    @Override
+    public WebResourceResponse handle(@NonNull String path) {
+        Log.d(TAG, "Handling path: " + path);
+
+        // Normalize path
+        if (path.isEmpty() || path.equals("/")) {
+            path = "/index.html";
+        }
+
+        // Get asset from Go
+        byte[] data = bridge.serveAsset(path, "GET", "{}");
+
+        if (data == null || data.length == 0) {
+            Log.w(TAG, "Asset not found: " + path);
+            return null; // Return null to let WebView handle 404
+        }
+
+        // Determine MIME type
+        String mimeType = bridge.getAssetMimeType(path);
+        Log.d(TAG, "Serving " + path + " with type " + mimeType + " (" + data.length + " bytes)");
+
+        // Create response
+        InputStream inputStream = new ByteArrayInputStream(data);
+        Map<String, String> headers = new HashMap<>();
+        headers.put("Access-Control-Allow-Origin", "*");
+        headers.put("Cache-Control", "no-cache");
+
+        return new WebResourceResponse(
+                mimeType,
+                "UTF-8",
+                200,
+                "OK",
+                headers,
+                inputStream
+        );
+    }
+
+    /**
+     * Determine MIME type from file extension
+     */
+    private String getMimeType(String path) {
+        String lowerPath = path.toLowerCase();
+
+        if (lowerPath.endsWith(".html") || lowerPath.endsWith(".htm")) {
+            return "text/html";
+        } else if (lowerPath.endsWith(".js") || lowerPath.endsWith(".mjs")) {
+            return "application/javascript";
+        } else if (lowerPath.endsWith(".css")) {
+            return "text/css";
+        } else if (lowerPath.endsWith(".json")) {
+            return "application/json";
+        } else if (lowerPath.endsWith(".png")) {
+            return "image/png";
+        } else if (lowerPath.endsWith(".jpg") || lowerPath.endsWith(".jpeg")) {
+            return "image/jpeg";
+        } else if (lowerPath.endsWith(".gif")) {
+            return "image/gif";
+        } else if (lowerPath.endsWith(".svg")) {
+            return "image/svg+xml";
+        } else if (lowerPath.endsWith(".ico")) {
+            return "image/x-icon";
+        } else if (lowerPath.endsWith(".woff")) {
+            return "font/woff";
+        } else if (lowerPath.endsWith(".woff2")) {
+            return "font/woff2";
+        } else if (lowerPath.endsWith(".ttf")) {
+            return "font/ttf";
+        } else if (lowerPath.endsWith(".eot")) {
+            return "application/vnd.ms-fontobject";
+        } else if (lowerPath.endsWith(".xml")) {
+            return "application/xml";
+        } else if (lowerPath.endsWith(".txt")) {
+            return "text/plain";
+        } else if (lowerPath.endsWith(".wasm")) {
+            return "application/wasm";
+        } else if (lowerPath.endsWith(".mp3")) {
+            return "audio/mpeg";
+        } else if (lowerPath.endsWith(".mp4")) {
+            return "video/mp4";
+        } else if (lowerPath.endsWith(".webm")) {
+            return "video/webm";
+        } else if (lowerPath.endsWith(".webp")) {
+            return "image/webp";
+        }
+
+        return "application/octet-stream";
+    }
+}

build/android/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/main_container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <WebView
+        android:id="@+id/webview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+</FrameLayout>

build/android/app/src/main/res/values/colors.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="wails_blue">#3574D4</color>
+    <color name="wails_blue_dark">#2C5FB8</color>
+    <color name="wails_background">#1B2636</color>
+    <color name="white">#FFFFFFFF</color>
+    <color name="black">#FF000000</color>
+</resources>

build/android/app/src/main/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Wails App</string>
+</resources>

build/android/app/src/main/res/values/themes.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="Theme.WailsApp" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/wails_blue</item>
+        <item name="colorPrimaryVariant">@color/wails_blue_dark</item>
+        <item name="colorOnPrimary">@android:color/white</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor">@color/wails_background</item>
+        <item name="android:navigationBarColor">@color/wails_background</item>
+        <!-- Window background -->
+        <item name="android:windowBackground">@color/wails_background</item>
+    </style>
+</resources>

build/android/build.gradle

@@ -0,0 +1,4 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    id 'com.android.application' version '8.7.3' apply false
+}

build/android/gradle.properties

@@ -0,0 +1,26 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. For more details, visit
+# https://developer.android.com/build/optimize-your-build#parallel
+# org.gradle.parallel=true
+
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

build/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

build/android/gradlew

@@ -0,0 +1,248 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

build/android/gradlew.bat

@@ -0,0 +1,93 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

build/android/main_android.go

@@ -0,0 +1,11 @@
+//go:build android
+
+package main
+
+import "github.com/wailsapp/wails/v3/pkg/application"
+
+func init() {
+	// Register main function to be called when the Android app initializes
+	// This is necessary because in c-shared build mode, main() is not automatically called
+	application.RegisterAndroidMain(main)
+}

build/android/scripts/deps/install_deps.go

@@ -0,0 +1,151 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+func main() {
+	fmt.Println("Checking Android development dependencies...")
+	fmt.Println()
+
+	errors := []string{}
+
+	// Check Go
+	if !checkCommand("go", "version") {
+		errors = append(errors, "Go is not installed. Install from https://go.dev/dl/")
+	} else {
+		fmt.Println("✓ Go is installed")
+	}
+
+	// Check ANDROID_HOME
+	androidHome := os.Getenv("ANDROID_HOME")
+	if androidHome == "" {
+		androidHome = os.Getenv("ANDROID_SDK_ROOT")
+	}
+	if androidHome == "" {
+		// Try common default locations
+		home, _ := os.UserHomeDir()
+		possiblePaths := []string{
+			filepath.Join(home, "Android", "Sdk"),
+			filepath.Join(home, "Library", "Android", "sdk"),
+			"/usr/local/share/android-sdk",
+		}
+		for _, p := range possiblePaths {
+			if _, err := os.Stat(p); err == nil {
+				androidHome = p
+				break
+			}
+		}
+	}
+
+	if androidHome == "" {
+		errors = append(errors, "ANDROID_HOME not set. Install Android Studio and set ANDROID_HOME environment variable")
+	} else {
+		fmt.Printf("✓ ANDROID_HOME: %s\n", androidHome)
+	}
+
+	// Check adb
+	if !checkCommand("adb", "version") {
+		if androidHome != "" {
+			platformTools := filepath.Join(androidHome, "platform-tools")
+			errors = append(errors, fmt.Sprintf("adb not found. Add %s to PATH", platformTools))
+		} else {
+			errors = append(errors, "adb not found. Install Android SDK Platform-Tools")
+		}
+	} else {
+		fmt.Println("✓ adb is installed")
+	}
+
+	// Check emulator
+	if !checkCommand("emulator", "-list-avds") {
+		if androidHome != "" {
+			emulatorPath := filepath.Join(androidHome, "emulator")
+			errors = append(errors, fmt.Sprintf("emulator not found. Add %s to PATH", emulatorPath))
+		} else {
+			errors = append(errors, "emulator not found. Install Android Emulator via SDK Manager")
+		}
+	} else {
+		fmt.Println("✓ Android Emulator is installed")
+	}
+
+	// Check NDK
+	ndkHome := os.Getenv("ANDROID_NDK_HOME")
+	if ndkHome == "" && androidHome != "" {
+		// Look for NDK in default location
+		ndkDir := filepath.Join(androidHome, "ndk")
+		if entries, err := os.ReadDir(ndkDir); err == nil {
+			for _, entry := range entries {
+				if entry.IsDir() {
+					ndkHome = filepath.Join(ndkDir, entry.Name())
+					break
+				}
+			}
+		}
+	}
+
+	if ndkHome == "" {
+		errors = append(errors, "Android NDK not found. Install NDK via Android Studio > SDK Manager > SDK Tools > NDK (Side by side)")
+	} else {
+		fmt.Printf("✓ Android NDK: %s\n", ndkHome)
+	}
+
+	// Check Java
+	if !checkCommand("java", "-version") {
+		errors = append(errors, "Java not found. Install JDK 11+ (OpenJDK recommended)")
+	} else {
+		fmt.Println("✓ Java is installed")
+	}
+
+	// Check for AVD (Android Virtual Device)
+	if checkCommand("emulator", "-list-avds") {
+		cmd := exec.Command("emulator", "-list-avds")
+		output, err := cmd.Output()
+		if err == nil && len(strings.TrimSpace(string(output))) > 0 {
+			avds := strings.Split(strings.TrimSpace(string(output)), "\n")
+			fmt.Printf("✓ Found %d Android Virtual Device(s)\n", len(avds))
+		} else {
+			fmt.Println("⚠ No Android Virtual Devices found. Create one via Android Studio > Tools > Device Manager")
+		}
+	}
+
+	fmt.Println()
+
+	if len(errors) > 0 {
+		fmt.Println("❌ Missing dependencies:")
+		for _, err := range errors {
+			fmt.Printf("   - %s\n", err)
+		}
+		fmt.Println()
+		fmt.Println("Setup instructions:")
+		fmt.Println("1. Install Android Studio: https://developer.android.com/studio")
+		fmt.Println("2. Open SDK Manager and install:")
+		fmt.Println("   - Android SDK Platform (API 34)")
+		fmt.Println("   - Android SDK Build-Tools")
+		fmt.Println("   - Android SDK Platform-Tools")
+		fmt.Println("   - Android Emulator")
+		fmt.Println("   - NDK (Side by side)")
+		fmt.Println("3. Set environment variables:")
+		if runtime.GOOS == "darwin" {
+			fmt.Println("   export ANDROID_HOME=$HOME/Library/Android/sdk")
+		} else {
+			fmt.Println("   export ANDROID_HOME=$HOME/Android/Sdk")
+		}
+		fmt.Println("   export PATH=$PATH:$ANDROID_HOME/platform-tools:$ANDROID_HOME/emulator")
+		fmt.Println("4. Create an AVD via Android Studio > Tools > Device Manager")
+		os.Exit(1)
+	}
+
+	fmt.Println("✓ All Android development dependencies are installed!")
+}
+
+func checkCommand(name string, args ...string) bool {
+	cmd := exec.Command(name, args...)
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	return cmd.Run() == nil
+}

build/android/settings.gradle

@@ -0,0 +1,18 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "WailsApp"
+include ':app'