使用 WiFi Direct 在客户端和服务器端发送和接收字符串

Question

我的应用程序是一个简单的 WiFi Direct 聊天。我可以连接两个设备，但我不知道我应该如何在双方发送和接收字符串（不是文件）（不仅仅是从客户端到服务器，如 developer example）

在双方：我只想要一个 EditText 和一个 Button，当点击时发送 EditText.getText() 到另一边
如果有人有完整的代码，请发给我一个link。非常感谢

Answer 1

Android 的 WiFiDirectServiceDiscovery sample project 这样做：

package com.example.android.wifidirect.discovery;

import android.os.Handler;
import android.util.Log;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

/**
 * Handles reading and writing of messages with socket buffers. Uses a Handler
 * to post messages to UI thread for UI updates.
 */
public class ChatManager implements Runnable {

    private Socket socket = null;
    private Handler handler;

    public ChatManager(Socket socket, Handler handler) {
        this.socket = socket;
        this.handler = handler;
    }

    private InputStream iStream;
    private OutputStream oStream;
    private static final String TAG = "ChatHandler";

    @Override
    public void run() {
        try {

            iStream = socket.getInputStream();
            oStream = socket.getOutputStream();
            byte[] buffer = new byte[1024];
            int bytes;
            handler.obtainMessage(WiFiServiceDiscoveryActivity.MY_HANDLE, this)
                    .sendToTarget();

            while (true) {
                try {
                    // Read from the InputStream
                    bytes = iStream.read(buffer);
                    if (bytes == -1) {
                        break;
                    }

                    // Send the obtained bytes to the UI Activity
                    Log.d(TAG, "Rec:" + String.valueOf(buffer));
                    handler.obtainMessage(WiFiServiceDiscoveryActivity.MESSAGE_READ,
                            bytes, -1, buffer).sendToTarget();
                } catch (IOException e) {
                    Log.e(TAG, "disconnected", e);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public void write(byte[] buffer) {
        try {
            oStream.write(buffer);
        } catch (IOException e) {
            Log.e(TAG, "Exception during write", e);
        }
    }

}

使用 WiFi Direct 在客户端和服务器端发送和接收字符串

Send and receive string in both client and server sides using WiFi Direct

android

chat

client-server

wifi-direct

wifip2p