Socket.io android java客户端接收消息和发送文件示例

比方说，我们将在列表视图中显示从服务器收到的消息.尝试{socket = IO.socket("http://192.168.1.10:3000");} catch (URISyntaxException e) {e.printStackTrace();}socket.on(Socket.EVENT_CONNECT, 新的 Emitter.Listener() {@覆盖公共无效调用(对象...参数){Log.d("ActivityName:", "socket已连接");//将您想要的任何内容发送到服务器socket.emit("登录", 一些);//socket.disconnect();}//这是来自服务器的发射}).on("someFunction", new Emitter.Listener() {@覆盖公共无效调用(对象...参数){//这个 argas[0] 可以是你从服务器发送的任何类型JSONArray obj = (JSONArray) args[0];字符串消息 = obj.toString();//如果要更改 UI 线程中的某些内容，则需要 runOnUiThreadrunOnUiThread(new Runnable() {公共无效运行(){//做一点事//mListData 是数组适配器mListData.add("Serversays" + " : " + " " + message);mListData.notifyDataSetChanged();lvList.setSelection(mListData.getCount() -1);}});}}).on(Socket.EVENT_DISCONNECT, new Emitter.Listener() {@覆盖公共无效调用(对象...参数){Log.d("ActivityName:", "socket 断开连接");}});套接字连接()；我们只能从主线程更新视图.您必须将更新 ui 的后台任务部分移动到主线程上.因此我们必须添加以下内容并在其中执行我们需要的任务.runOnUiThread(new Runnable(){@覆盖公共无效运行(){//做一点事}}希望它能为某人节省时间.Does anyone have any sample code which demonstrates receiving messages on the java client side for socket.io?Also, is there any example on sending a file/binary/picture over from the same socket.io java client? (basically sample code from java instead of javascript client)The version of android java client can be acquired here (this version claim that it can be used with socket.io 1.0 and later) (seems to be the most updated version)https://github.com/nkzawa/socket.io-client.javaCurrently the sample code which only allows me to initialize a connection, the server is able to get my incoming connection event and the java socket.io client is able to send out a basic emit message. However, there is no plain simple examples on how to acquire a message update from a server broadcast or emits from another website user.Sample code just for reference:package com.sample.d10132014a;import java.io.BufferedReader;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.URISyntaxException;import org.json.JSONException;import org.json.JSONObject;import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import com.github.nkzawa.socketio.client.*; // java socket io clientimport com.github.nkzawa.socketio.client.Socket;import com.github.nkzawa.emitter.Emitter;import com.github.nkzawa.engineio.client.*; // java engine io clientimport com.github.nkzawa.engineio.client.transports.*;public class MainActivity extends Activity { public static String internalPath; // internal storage path public static String fileName; // the file name private Socket socket; // socket object @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); try { socket = IO.socket("http://YOURSERVERIP:3000"); socket.connect(); // initiate connection to socket server socket.emit("chat message", "From Android to server: 1st outgoing message"); } catch (URISyntaxException e) { e.printStackTrace(); } socket.on(Socket.EVENT_CONNECT, new Emitter.Listener() { @Override public void call(Object... args) { Log.d("socketio", "socket connected"); socket.emit("chat message", "even connect: message sent from android to socketio server"); //socket.disconnect(); // why is there a disconnect here? } }).on("chat message", new Emitter.Listener() { @Override public void call(Object... arg0) { // TODO Auto-generated method stub JSONObject obj = (JSONObject)arg0[0]; Log.d("socketio", "message back: "+obj.toString()); Log.d("socketio", "incomming chat message: " + obj.toString() + arg0 + arg0[0] + arg0[1]); // trying to test which variable holds the message } }).on(Socket.EVENT_MESSAGE, new Emitter.Listener() { @Override public void call(Object... arg0) { // TODO Auto-generated method stub Log.d("socketio", "socket event message" + arg0); socket.emit("chat message", "android to server from event message"); } }); // 2nd segment test without connecting to 1 long method socket.on(Socket.EVENT_CONNECT_ERROR, new Emitter.Listener() { @Override public void call(Object... arg0) { // TODO Auto-generated method stub Log.d("socketio", "socket event connect error"); socket.emit("chat message", "android to server: socket event connect error"); } }); socket.on(Socket.EVENT_MESSAGE, new Emitter.Listener() { @Override public void call(Object... arg0) { // TODO Auto-generated method stub Log.d("socketio", "socket event message" + arg0); socket.emit("chat message", "android to server from event message"); } }); setContentView(R.layout.activity_main); } // ending onCreate method} // ending classThanks for reading 解决方案 Hy I am not sure if this is exactly what u are looking for, and there might be a chance that you have already solved it, regardless i would like to answer it as when i was browsing for a solution to my problem, i came across your question here but i couldnot find any answer, left me disappointed. As i have already solved my problem, i would like to share how i did it.My problem was i was receiving the message from the node.js server but i could only see that message in my logcat and i was really having a problem to print that message on my android application in the main UI thread.Lets say, we would show the message received from the server in the list view. try { socket = IO.socket("http://192.168.1.10:3000"); } catch (URISyntaxException e) { e.printStackTrace(); } socket.on(Socket.EVENT_CONNECT, new Emitter.Listener() { @Override public void call(Object... args) { Log.d("ActivityName: ", "socket connected"); // emit anything you want here to the server socket.emit("login", some); //socket.disconnect(); } // this is the emit from the server }).on("someFunction", new Emitter.Listener() { @Override public void call(Object... args) { // this argas[0] can have any type you send from the server JSONArray obj = (JSONArray) args[0]; String message = obj.toString(); // runOnUiThread is needed if you want to change something in the UI thread runOnUiThread(new Runnable() { public void run() { // do something //mListData is the array adapter mListData.add("Serversays" + " : " + " " + message); mListData.notifyDataSetChanged(); lvList.setSelection(mListData.getCount() -1); } }); } }).on(Socket.EVENT_DISCONNECT, new Emitter.Listener() { @Override public void call(Object... args) { Log.d("ActivityName: ", "socket disconnected"); } }); socket.connect();we can update views only from main thread. You have to move the portion of the background task that updates the ui onto the main thread.So we have to add the following and do our required task in there.runOnUiThread(new Runnable(){ @Override public void run() {//do something}}Hope it will save time for someone. 这篇关于Socket.io android java客户端接收消息和发送文件示例的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！