触点数字孪生,揭秘它的独特魅力
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2025-08-19
// 原生安卓模块(Kotlin) class HybridView(context: Context) : WebView(context) { init { settings.javaScriptEnabled = true addJavascriptInterface(JsBridge(), "NativeBridge") } inner class JsBridge { @JavascriptInterface fun getDeviceInfo(): String { return JSONObject().apply { put("platform", "Android") put("osVersion", Build.VERSION.RELEASE) put("uuid", Settings.Secure.getString( context.contentResolver, Settings.Secure.ANDROID_ID )) }.toString() } } } // JavaScript调用层 document.getElementById('getInfo').addEventListener('click', async () => { const deviceInfo = await window.NativeBridge.getDeviceInfo(); console.log('Device Info:', JSON.parse(deviceInfo)); });
// Flutter示例:集成原生地图组件 class NativeMapView extends StatelessWidget { final Function(Location) onLocationUpdate; const NativeMapView({super.key, required this.onLocationUpdate}); @override Widget build(BuildContext context) { return Platform.isAndroid ? AndroidView( viewType: 'plugins.example/native_map', creationParams: { 'initialZoom': 14.0, 'trackingMode': 'follow' }, creationParamsCodec: StandardMessageCodec(), onPlatformViewCreated: _onViewCreated, ) : UiKitView(...); } void _onViewCreated(int id) { const channel = MethodChannel('plugins.example/map_$id'); channel.setMethodCallHandler((call) async { if (call.method == 'locationUpdate') { final data = call.arguments as Map; onLocationUpdate(Location( data['lat'], data['lng'], accuracy: data['accuracy'] )); } }); } } // 对应原生安卓实现(Java) public class NativeMapPlugin implements PlatformView { private final MapView mapView; private final MethodChannel channel; public NativeMapPlugin(Context context, int id, Object args) { channel = new MethodChannel( registrar.messenger(), "plugins.example/map_" + id ); mapView = new MapView(context); mapView.setOnLocationChangedListener(location -> { Map<String, Object> data = new HashMap<>(); data.put("lat", location.getLatitude()); data.put("lng", location.getLongitude()); data.put("accuracy", location.getAccuracy()); channel.invokeMethod("locationUpdate", data); }); } }
// 跨平台文件系统API设计 const FileSystem = { readFile: async (path) => { if (window.isNativeApp) { // 调用原生实现 const base64Data = await window.NativeModules.FileSystem.read(path); return Buffer.from(base64Data, 'base64'); } else { // Web端实现 const res = await fetch(path); return res.arrayBuffer(); } }, writeFile: async (path, content) => { if (window.isNativeApp) { const base64 = Buffer.from(content).toString('base64'); return window.NativeModules.FileSystem.write(path, base64); } else { // 实现IndexedDB存储 const db = await openDB('fs', 1); await db.put('files', content, path); } } }; // 安卓原生实现(Kotlin) class FileSystemModule(private val context: Context) { @ReactMethod fun read(path: String, promise: Promise) { try { val file = File(context.filesDir, path) val bytes = Files.readAllBytes(file.toPath()) promise.resolve(Base64.encodeToString(bytes, Base64.DEFAULT)) } catch (e: Exception) { promise.reject("FILE_ERROR", e) } } @ReactMethod fun write(path: String, base64Data: String, promise: Promise) { val bytes = Base64.decode(base64Data, Base64.DEFAULT) File(context.filesDir, path).writeBytes(bytes) promise.resolve(null) } }
// 安卓端WebView线程优化 public class SafeWebView extends WebView { private static final ExecutorService jsExecutor = Executors.newFixedThreadPool(4, r -> { Thread t = new Thread(r); t.setPriority(Thread.NORM_PRIORITY - 1); return t; }); public void evaluateJsSafe(String script, ValueCallback<String> callback) { jsExecutor.execute(() -> { final CountDownLatch latch = new CountDownLatch(1); post(() -> { evaluateJavascript(script, result -> { latch.countDown(); callback.onReceiveValue(result); }); }); try { latch.await(2, TimeUnit.SECONDS); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } }); } } // Dart isolate通信优化 Future<Image> processImage(Image src) async { final receivePort = ReceivePort(); await Isolate.spawn(_isolateEntry, receivePort.sendPort); final sendPort = await receivePort.first as SendPort; final responsePort = ReceivePort(); sendPort.send({ 'image': src, 'port': responsePort.sendPort }); return await responsePort.first; } void _isolateEntry(SendPort mainSendPort) { final receivePort = ReceivePort(); mainSendPort.send(receivePort.sendPort); receivePort.listen((message) { final image = message['image'] as Image; final port = message['port'] as SendPort; // 执行耗时操作 final processed = _applyFilters(image); port.send(processed); }); }
// 安卓端模块化构建配置(build.gradle) android { dynamicFeatures = [':dynamic_feature'] } dependencies { implementation 'com.google.android.play:core:2.0.0' } // 动态模块加载 private val installManager = SplitInstallManagerFactory.create(this) fun loadFeature(moduleName: String) { val request = SplitInstallRequest.newBuilder() .addModule(moduleName) .build() installManager.startInstall(request) .addOnSuccessListener { Log.d("DynamicLoad", "Module $moduleName installed") launchFeature(moduleName) } .addOnFailureListener { e -> Log.e("DynamicLoad", "Install failed: ${e.message}") } } private fun launchFeature(moduleName: String) { val intent = when (moduleName) { "dynamic_feature" -> Intent(this, DynamicActivity::class.java) else -> throw IllegalArgumentException("Unknown module") } startActivity(intent) } // JavaScript热更新方案 class HotUpdater { constructor() { this.verison = localStorage.getItem('app_version') || '1.0.0'; } async checkUpdate() { const res = await fetch('/api/check-update?version=' + this.version); const { url, version } = await res.json(); if (version > this.version) { const script = await fetch(url); const newCode = await script.text(); // 安全执行更新代码 this.applyUpdate(newCode); localStorage.setItem('app_version', version); } } applyUpdate(code) { const fn = new Function('module', code); const newModule = { exports: {} }; fn(newModule); // 替换旧模块 require.cache['./updatedModule'] = newModule; } }
// 性能监控SDK class PerfMonitor { private metrics: Record<string, number> = {}; startTrace(name: string) { this.metrics[name] = performance.now(); } endTrace(name: string) { const duration = performance.now() - this.metrics[name]; this.sendMetric(name, duration); } private sendMetric(name: string, value: number) { navigator.sendBeacon('/api/metrics', JSON.stringify({ name, value, platform: window.platform, device: window.deviceId })); } } // 安卓端Native崩溃捕获 Thread.setDefaultUncaughtExceptionHandler { thread, ex -> val stackTrace = Log.getStackTraceString(ex) val logData = """ { "timestamp": ${System.currentTimeMillis()}, "model": "${Build.MODEL}", "os_ver": "${Build.VERSION.RELEASE}", "stacktrace": "$stackTrace" } """.trimIndent() File(cacheDir, "crash_log.json").writeText(logData) Process.killProcess(Process.myPid()) }
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