Android集成WebSocket实现实时通信

一：首先build.gradle集成

implementation 'com.squareup.okhttp3:okhttp:3.11.0'

二：websocket代码

package com.xx.xx.websocket;
import androidx.annotation.Nullable;

import com.shuye.znsy.activity.MainActivity;

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.WebSocket;
import okhttp3.WebSocketListener;
import okio.ByteString;

public class WebSocketExample {

    private WebSocket webSocket;
    private OkHttpClient client;
    private MainActivity mainActivity;

    public WebSocketExample(MainActivity mainActivity) {
        this.mainActivity = mainActivity;
    }

    public void start() {
        client = new OkHttpClient();

        Request request = new Request.Builder()
                .url("ws://192.168.100.11:8001/wss/notice.sc")
                .build();

        webSocket = client.newWebSocket(request, new WebSocketListener() {
            @Override
            public void onOpen(WebSocket webSocket, okhttp3.Response response) {
                // 连接打开时的回调
                webSocket.send("连接已建立，你可以发送消息了。");
            }

            @Override
            public void onMessage(WebSocket webSocket, String text) {
                // 接收到文本消息时的回调
                System.out.println("接收到文本消息: " + text);
                // 调用MainActivity的appUpdate方法
                mainActivity.runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        mainActivity.appUpdata();
                    }
                });

            }

            @Override
            public void onMessage(WebSocket webSocket, ByteString bytes) {
                // 接收到二进制消息时的回调
                System.out.println("接收到二进制消息: " + bytes.hex());
            }

            @Override
            public void onClosing(WebSocket webSocket, int code, String reason) {
                // 即将关闭连接时的回调
                webSocket.close(1000, "关闭连接");
            }

            @Override
            public void onFailure(WebSocket webSocket, Throwable t, @Nullable Response response) {
                // 连接失败时的回调
                t.printStackTrace();
            }
        });
    }

    public void stop() {
        if (webSocket != null) {
            webSocket.close(1000, "正常关闭");
        }
    }
}

三：

MainActivity主类调用

protected void onCreate(Bundle savedInstanceState) {
       
        //其他代码
        
        WebSocketExample webSocketExample = new WebSocketExample(this);
        webSocketExample.start();


    }