안드로이드 서버 클라이언트 통신 예제

안녕하세요 꼬로미입니다

안드로이드 프로그래밍 네트워크 서버/클라이언트 통신 예제입니다

서버는 Java Project를 생성해 작성

클라이언트, XML은 안드로이드 프로젝트에서 작성

서버 (Java Project)

public class ServerTest { public static void main(String[] args) throws IOException{ ServerSocket serverSocket = null; Socket clientSocket = null; PrintWriter out = null; BufferedReader in = null; serverSocket = new ServerSocket(5555); try { clientSocket = serverSocket.accept(); System.out.println("Client connect"); out = new PrintWriter(clientSocket.getOutputStream(), true); in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream())); while (true) { String inputLine = null; inputLine = in.readLine(); System.out.println("클라이언트로부터 받은 문자열 : " + inputLine); out.println(inputLine); if (inputLine.equals("quit")) break; } out.close(); in.close(); clientSocket.close(); serverSocket.close(); } catch (Exception e){ e.printStackTrace(); } } }

클라이언트 (Android Project)

public class MainActivity extends Activity { private Socket socket; BufferedReader socket_in; PrintWriter socket_out; EditText input; Button button; TextView output; String data; @Override public void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.main); input = (EditText) findViewById(R.id.input); button = (Button) findViewById(R.id.button); output = (TextView) findViewById(R.id.output); button.setOnClickListener(new OnClickListener() { public void onClick(View v) { String data = input.getText().toString(); Log.w("NETWORK", " " + data); if(data != null) { socket_out.println(data); } } }); Thread worker = new Thread() { public void run() { try { socket = new Socket("222.104.147.163", 5555); socket_out = new PrintWriter(socket.getOutputStream(), true); socket_in = new BufferedReader(new InputStreamReader(socket.getInputStream())); } catch (IOException e) { e.printStackTrace(); } try { while (true) { data = socket_in.readLine(); output.post(new Runnable() { public void run() { output.setText(data); } }); } } catch (Exception e) { } } }; worker.start(); } @Override protected void onStop() { // TODO Auto-generated method stub super.onStop(); try { socket.close(); } catch (IOException e) { e.printStackTrace(); } } }

XML

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical" >     <EditText         android:id="@+id/input"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text=""         android:ems="10"         android:singleLine="true" >         <requestFocus />     </EditText>     <Button         android:id="@+id/button"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:text="INPUT" />     <TextView         android:id="@+id/output"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="TextView" /> </LinearLayout>

실행화면

123을 입력해 INPUT 버튼을 눌러 콘솔창에서 123이란 문자열을 클라이언트로부터 받음