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())
}编译时优化:通过AOT编译将跨平台代码转换为原生二进制
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