Android QuickJS 是一款轻量级的 JavaScript 引擎,用于 Android 平台上的嵌入式应用开发。要在 Android QuickJS 中处理 WebSocket 连接,您需要使用 QuickJS 的 C API 来创建和管理 WebSocket 客户端。以下是一个简单的示例,展示了如何在 Android QuickJS 中处理 WebSocket 连接:
build.gradle
文件中添加以下依赖项:dependencies {
implementation 'com.chaojiying:quickjs-android:1.0.0'
}
WebSocketHandler.java
。在这个类中,我们将使用 QuickJS 的 C API 来处理 WebSocket 连接。import com.chaojiying.quickjs.JavaScriptEngine;
import com.chaojiying.quickjs.JSValue;
import com.chaojiying.quickjs.QuickJS;
import com.chaojiying.quickjs.WebSocket;
public class WebSocketHandler {
private JavaScriptEngine engine;
private WebSocket webSocket;
public WebSocketHandler() {
engine = new JavaScriptEngine();
webSocket = new WebSocket(engine);
}
public void connect(String url) {
webSocket.connect(url, new WebSocket.Listener() {
@Override
public void onOpen(WebSocket webSocket) {
super.onOpen(webSocket);
JSValue globalObject = engine.getGlobalObject();
JSValue ws = engine.eval("WebSocket").asObject();
engine.setProperty(globalObject, "WebSocket", ws);
engine.eval("window.WebSocket = WebSocket");
}
@Override
public void onMessage(WebSocket webSocket, String message) {
super.onMessage(webSocket, message);
JSValue globalObject = engine.getGlobalObject();
engine.callFunction(globalObject, "onMessage", message);
}
@Override
public void onClose(WebSocket webSocket, int code, String reason) {
super.onClose(webSocket, code, reason);
JSValue globalObject = engine.getGlobalObject();
engine.callFunction(globalObject, "onClose", code, reason);
}
@Override
public void onError(WebSocket webSocket, String error) {
super.onError(webSocket, error);
JSValue globalObject = engine.getGlobalObject();
engine.callFunction(globalObject, "onError", error);
}
});
}
public void send(String message) {
webSocket.send(message);
}
public void close() {
webSocket.close();
}
public void release() {
webSocket.close();
engine.release();
}
}
WebSocket
对象来处理 WebSocket 连接。例如,在 MainActivity.java
中:import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
private WebSocketHandler webSocketHandler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webSocketHandler = new WebSocketHandler();
webSocketHandler.connect("wss://your-websocket-url");
}
@Override
protected void onDestroy() {
super.onDestroy();
webSocketHandler.close();
webSocketHandler.release();
}
}
在这个示例中,我们创建了一个 WebSocketHandler
类,用于处理 WebSocket 连接。在 onCreate
方法中,我们连接到 WebSocket 服务器,并在 onDestroy
方法中关闭连接并释放资源。在 JavaScript 代码中,您可以使用 WebSocket
对象来处理 WebSocket 连接。