Android之Socket通訊
阿新 • • 發佈：2018-11-26
Android裡面使用Socket與伺服器之間進行通訊：
首先建立一個SocThread類
package com.junto.sockettest; import android.content.Context; import android.content.SharedPreferences; import android.os.Handler; import android.os.Message; import android.util.Log; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.net.UnknownHostException; /** * Created by WangJinyong on 2018/6/30. */ public class SocThread extends Thread { private String ip = "114.116.64.184"; private int port = 9667; private String TAG = "socket thread"; private int timeout = 10000; public Socket client = null; PrintWriter out; BufferedReader in; public boolean isRun = true; Handler inHandler; Handler outHandler; Context ctx; private String TAG1 = "===Send==="; SharedPreferences sp; public SocThread(Handler handlerin, Handler handlerout, Context context) { inHandler = handlerin; outHandler = handlerout; ctx = context; Log.i(TAG, "建立執行緒socket"); } /** * 連線socket伺服器 */ public void conn() { try { initdate(); Log.i(TAG, "連線中……"); client = new Socket(ip, port); client.setSoTimeout(timeout);// 設定阻塞時間 Log.i(TAG, "連線成功"); in = new BufferedReader(new InputStreamReader( client.getInputStream())); out = new PrintWriter(new BufferedWriter(new OutputStreamWriter( client.getOutputStream())), true); Log.i(TAG, "輸入輸出流獲取成功"); } catch (UnknownHostException e) { Log.i(TAG, "連線錯誤UnknownHostException 重新獲取"); e.printStackTrace(); conn(); } catch (IOException e) { Log.i(TAG, "連線伺服器io錯誤"); e.printStackTrace(); } catch (Exception e) { Log.i(TAG, "連線伺服器錯誤Exception" + e.getMessage()); e.printStackTrace(); } } public void initdate() { sp = ctx.getSharedPreferences("SP", ctx.MODE_PRIVATE); ip = sp.getString("ipstr", ip); port = Integer.parseInt(sp.getString("port", String.valueOf(port))); Log.i(TAG, "獲取到ip埠:" + ip + ";" + port); } /** * 實時接受資料 */ @Override public void run() { Log.i(TAG, "執行緒socket開始執行"); conn(); Log.i(TAG, "1.run開始"); String line = ""; while (isRun) { try { if (client != null) { Log.i(TAG, "2.檢測資料"); while ((line = in.readLine()) != null) { Log.i(TAG, "3.getdata" + line + " len=" + line.length()); Log.i(TAG, "4.start set Message"); Message msg = inHandler.obtainMessage(); msg.obj = line; inHandler.sendMessage(msg);// 結果返回給UI處理 Log.i(TAG1, "5.send to handler"); } } else { Log.i(TAG, "沒有可用連線"); conn(); } } catch (Exception e) { Log.i(TAG, "資料接收錯誤" + e.getMessage()); e.printStackTrace(); } } } /** * 傳送資料 * * @param mess */ public void Send(String mess) { try { if (client != null) { Log.i(TAG1, "傳送" + mess + "至" + client.getInetAddress().getHostAddress() + ":" + String.valueOf(client.getPort())); out.println(mess); out.flush(); Log.i(TAG1, "傳送成功"); Message msg = outHandler.obtainMessage(); msg.obj = mess; msg.what = 1; outHandler.sendMessage(msg);// 結果返回給UI處理 } else { Log.i(TAG, "client 不存在"); Message msg = outHandler.obtainMessage(); msg.obj = mess; msg.what = 0; outHandler.sendMessage(msg);// 結果返回給UI處理 Log.i(TAG, "連線不存在重新連線"); conn(); } } catch (Exception e) { Log.i(TAG1, "send error"); e.printStackTrace(); } finally { Log.i(TAG1, "傳送完畢"); } } /** * 關閉連線 */ public void close() { try { if (client != null) { Log.i(TAG, "close in"); in.close(); Log.i(TAG, "close out"); out.close(); Log.i(TAG, "close client"); client.close(); } } catch (Exception e) { Log.i(TAG, "close err"); e.printStackTrace(); } } }
通訊的Activity類Client
client的XML佈局檔案package com.junto.sockettest; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; /** * Created by WangJinyong on 2018/6/30. */ public class Client extends Activity { private String TAG = "===Client==="; private TextView tv1 = null; Handler mhandler; Handler mhandlerSend; EditText edtsendms; Button btnsend; private String sendstr = ""; private Context ctx; SocThread socketThread; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.client); tv1 = (TextView) findViewById(R.id.tv1); btnsend = (Button) findViewById(R.id.button1); ctx = Client.this; edtsendms = (EditText) findViewById(R.id.editText1); mhandler = new Handler() { @Override public void handleMessage(Message msg) { try { Log.i(TAG, "mhandler接收到msg=" + msg.what); if (msg.obj != null) { // byte[] objStr2 = (byte[]) msg.obj; // Log.e("tag","objStr2="+objStr2); String s = msg.obj.toString(); if (s.trim().length() > 0) { Log.i(TAG, "mhandler接收到obj=" + s); Log.i(TAG, "開始更新UI"); tv1.append("Server:" + s); Log.i(TAG, "更新UI完畢"); } else { Log.i(TAG, "沒有資料返回不更新"); } } } catch (Exception ee) { Log.i(TAG, "載入過程出現異常"); ee.printStackTrace(); } } }; mhandlerSend = new Handler() { @Override public void handleMessage(Message msg) { try { Log.i(TAG, "mhandlerSend接收到msg.what=" + msg.what); String s = msg.obj.toString(); if (msg.what == 1) { tv1.append("\n ME: " + s + " 傳送成功"); } else { tv1.append("\n ME: " + s + " 傳送失敗"); } } catch (Exception ee) { Log.i(TAG, "載入過程出現異常"); ee.printStackTrace(); } } }; startSocket(); btnsend.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // 傳送資料 Log.i(TAG, "準備傳送資料"); sendstr = edtsendms.getText().toString().trim(); socketThread.Send(sendstr); } }); } public void startSocket() { socketThread = new SocThread(mhandler, mhandlerSend, ctx); socketThread.start(); } private void stopSocket() { socketThread.isRun = false; socketThread.close(); socketThread = null; Log.i(TAG, "Socket已終止"); } @Override protected void onStart() { super.onStart(); Log.e(TAG, "start onStart~~~"); } @Override protected void onRestart() { super.onRestart(); Log.e(TAG, "start onRestart~~~"); startSocket(); } @Override protected void onResume() { super.onResume(); Log.e(TAG, "start onResume~~~"); } @Override protected void onPause() { super.onPause(); Log.e(TAG, "start onPause~~~"); } @Override protected void onStop() { super.onStop(); Log.e(TAG, "start onStop~~~"); stopSocket(); } @Override protected void onDestroy() { super.onDestroy(); Log.e(TAG, "start onDestroy~~~"); } }
在AndroidManifest.xml新增網路許可權：<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:text="接收到的資訊" /> <TextView android:id="@+id/tv1" android:layout_width="150dp" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:layout_weight="0.25" android:text="" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:text="請輸入傳送內容" /> <EditText android:id="@+id/editText1" android:layout_width="match_parent" android:layout_height="wrap_content" android:ems="10"> <requestFocus /> </EditText> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="傳送" /> </LinearLayout> </LinearLayout>
<uses-permission android:name="android.permission.INTERNET"/>