android tcp server

(1)BYTE TO STRING

(2)STRING TO BYTE

(3)THREAD

(4)HANDLE

 

1. packagecom.FJICC.lzm;
2. importjava.util.ArrayList;
3. importjava.util.Enumeration;
4. importjava.io.BufferedReader;
5. importjava.io.IOException;
6. importjava.io.InputStream;
7. importjava.io.InputStreamReader;
8. importjava.io.OutputStream;
9. importjava.net.InetAddress;
10. importjava.net.NetworkInterface;
11. importjava.net.Socket;
12. importjava.net.ServerSocket;
14. importandroid.app.Activity;
15. importandroid.app.AlertDialog;
16. importandroid.app.Dialog;
17. importandroid.content.Context;
18. importandroid.content.DialogInterface;
19. importandroid.content.Intent;
20. importandroid.os.Bundle;
21. importandroid.os.Handler;
22. importandroid.os.Message;
23. importandroid.view.View;
24. importandroid.widget.Button;
25. importandroid.widget.EditText;
26. importandroid.widget.TextView;
29. publicclasstcp_serverextendsActivity{
31. privateButtonserverStart_btn;
32. privateButtonserverStop_btn;
33. privateTextViewreceivedata_tv;
34. privateButtonsetport_btn;
35. privateEditTextsenddata_et;
36. privateButtonsend_btn;
37. publicintPORT=8080;
38. publicHandlermHandler;
39. protectedstaticfinalintGUINOTIFIER=0x1234;
41. @Override
42. publicvoidonBackPressed(){
43. //TODOAuto-generatedmethodstub
44. super.onBackPressed();
45. Intenti=newIntent();
46. i.setClass(tcp_server.this,MainActivity.class);
47. startActivity(i);
48. finish();
49. }
50. @Override
51. protectedvoidonCreate(BundlesavedInstanceState){
52. //TODOAuto-generatedmethodstub
53. super.onCreate(savedInstanceState);
54. setContentView(R.layout.tcpserver_main);
56. serverStart_btn=(Button)findViewById(R.id.btnStart);
57. serverStop_btn=(Button)findViewById(R.id.btnStop);
58. setport_btn=(Button)findViewById(R.id.btnSet);
59. send_btn=(Button)findViewById(R.id.btnSend);
61. senddata_et=(EditText)findViewById(R.id.et_send);
62. receivedata_tv=(TextView)findViewById(R.id.tv_receive);
64. serverStart_btn.setOnClickListener(newButton.OnClickListener(){
65. @Override
66. publicvoidonClick(Viewv){
67. //TODOAuto-generatedmethodstub
68. serverStart_btn.setEnabled(false);
69. setport_btn.setEnabled(false);
70. serverStop_btn.setEnabled(true);
72. newThread()
73. {
74. @Override
75. publicvoidrun(){
76. //TODOAuto-generatedmethodstub
77. super.run();
78. ServerSocketserverSocket=null;
79. try{
80. //创建ServerSocket对象监听PORT端口
81. serverSocket=newServerSocket(PORT);
82. //接收tcp连接返回socket对象
83. Socketsocket=serverSocket.accept();
85. //获得输入流
86. InputStreaminputStream=socket.getInputStream();
87. ///////////////////////////////////////////////////////////////////////////////////////
88. //获得输出流
89. OutputStreamoutputStream=socket.getOutputStream();
90. byte[]byteBuffer=newbyte[1024];
91. inttemp=0;
92. Strings;
93. //读取接收到的数据
94. while((temp=inputStream.read(byteBuffer))!=-1)
95. {
96. outputStream.write(byteBuffer,0,temp);
97. //将byte转为string
98. //String(byte[],int,int)使用平台的缺省字符编码方式转换指定的字节子数组生成一新的String
99. s=newString(byteBuffer,0,temp);
101. //将string转byte
102. //byte[]bs=str.getBytes();
104. //定义一个message的变量m
105. Messagem=newMessage();
106. //消息的标记GUINOTIFIER在前面定义的
107. m.what=tcp_server.GUINOTIFIER;
108. //将要传送的数据传递给m.obj
109. m.obj=s;
110. //传送消息
111. tcp_server.this.mHandler.sendMessage(m);
112. }
113. //System.out.println(newString(byteBuffer,0,temp));
114. outputStream.flush();
115. socket.close();
116. serverSocket.close();
118. }catch(IOExceptione){
119. e.printStackTrace();
120. }
121. }
122. }.start();
123. }
124. });
126. //创建handler
127. mHandler=newHandler(){
128. publicvoidhandleMessage(Messagemsg){
129. switch(msg.what){//得到Handle的通知了这个时候你可以做相应的操作
130. casetcp_server.GUINOTIFIER://tcp_server是Activity的类名
131. //清空textView
132. receivedata_tv.setText("");
133. //设置textView显示内容
134. receivedata_tv.setText(msg.obj.toString());
135. break;
136. }
137. super.handleMessage(msg);
138. }
139. };
140. //结束TCP服务器
141. serverStop_btn.setOnClickListener(newButton.OnClickListener(){
142. @Override
143. publicvoidonClick(Viewv){
144. serverStart_btn.setEnabled(true);
145. setport_btn.setEnabled(true);
146. serverStop_btn.setEnabled(false);
148. Intenti=newIntent();
149. i.setClass(tcp_server.this,MainActivity.class);
150. startActivity(i);
151. finish();
152. }});
153. }
155. }
158. tcpserver_main.xml
159. <?xmlversion="1.0"encoding="UTF-8"?>
160. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
161. android:layout_width="fill_parent"
162. android:layout_height="fill_parent"
163. android:orientation="vertical">
165. <LinearLayout
166. android:layout_width="wrap_content"
167. android:layout_height="wrap_content"
168. android:layout_gravity="center_horizontal"
169. android:orientation="horizontal">
171. <Button
172. android:id="@+id/btnStart"
173. style="?android:attr/buttonStyleSmall"
174. android:layout_width="wrap_content"
175. android:layout_height="wrap_content"
176. android:text="开启服务"/>
178. <Button
179. android:id="@+id/btnStop"
180. style="?android:attr/buttonStyleSmall"
181. android:layout_width="wrap_content"
182. android:layout_height="wrap_content"
183. android:text="关闭服务"/>
185. <Button
186. android:id="@+id/btnSet"
187. style="?android:attr/buttonStyleSmall"
188. android:layout_width="wrap_content"
189. android:layout_height="wrap_content"
190. android:text="端口设置"/>
191. </LinearLayout>
193. <TextView
194. android:id="@+id/tv_receive"
195. android:layout_width="match_parent"
196. android:layout_height="wrap_content"
197. android:layout_weight="0.70"
198. android:text="TextView"/>
200. <EditText
201. android:id="@+id/et_send"
202. android:layout_width="match_parent"
203. android:layout_height="wrap_content"
204. android:ems="10"
205. android:inputType="textMultiLine">
207. <requestFocus/>
208. </EditText>
210. <Button
211. android:id="@+id/btnSend"
212. style="?android:attr/buttonStyleSmall"
213. android:layout_width="148dp"
214. android:layout_height="wrap_content"
215. android:layout_gravity="center_horizontal"
216. android:text="发送"/>
218. </LinearLayout>
222. <uses-permissionandroid:name="android.permission.INTERNET"/>