Android 模擬器和PC用sockets通訊

之前一直會用sockets來實現emulator和PC進行通訊，卡了幾天，最後請教其他人終於可以連接了。 錯誤原因是在IP和端口，IP要用本機IP（在CMD輸入ipconfig，注意：每次開機本機IP都不同，ADSL是動態IP），端口用emulator的名稱，5554或5556.java sever文件要另外建java工程運行，在Android工程運行不了java（run application）
客戶端代碼：

1. package com.yarin.android.Examples_08_04;
3. import java.io.BufferedReader;
4. import java.io.BufferedWriter;
5. import java.io.InputStreamReader;
6. import java.io.OutputStreamWriter;
7. import java.io.PrintWriter;
8. import java.net.InetAddress;
9. import java.net.Socket;
11. import android.app.Activity;
12. import android.os.Bundle;
13. import android.util.Log;
14. import android.view.View;
15. import android.view.View.OnClickListener;
16. import android.widget.Button;
17. import android.widget.EditText;
18. import android.widget.TextView;
20. public class Activity01 extends Activity
21. {
22. private final String DEBUG_TAG = "Activity01";
24. private TextView mTextView=null;
25. private EditText mEditText=null;
26. private Button mButton=null;
27. /** Called when the activity is first created. */
28. @Override
29. public void onCreate(Bundle savedInstanceState)
30. {
31. super.onCreate(savedInstanceState);
32. setContentView(R.layout.main);
34. mButton = (Button)findViewById(R.id.Button01);
35. mTextView=(TextView)findViewById(R.id.TextView01);
36. mEditText=(EditText)findViewById(R.id.EditText01);
38. //登陸
39. mButton.setOnClickListener(new OnClickListener()
40. {
41. public void onClick(View v)
42. {
43. Socket socket = null;
44. String message = mEditText.getText().toString() + "\r\n";
45. try
46. {
47. //創建Socket
48. socket = new Socket("116.29.27.138",5554); //查看本機IP,每次開機都不同
49. //socket=new Socket("192.168.1.110",50000);
50. //向服務器發送消息
51. PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);
52. out.println(message);
54. //接收來自服務器的消息
55. BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
56. String msg = br.readLine();
58. if ( msg != null )
59. {
60. mTextView.setText(msg);
61. }
62. else
63. {
64. mTextView.setText("數據錯誤!");
65. }
66. //關閉流
67. out.close();
68. br.close();
69. //關閉Socket
70. socket.close();
71. }
72. catch (Exception e)
73. {
74. // TODO: handle exception
75. Log.e(DEBUG_TAG, e.toString());
76. }
77. }
78. });
79. }
80. }

1. package com.yarin.android.Examples_08_04;
3. import java.io.BufferedReader;
4. import java.io.BufferedWriter;
5. import java.io.InputStreamReader;
6. import java.io.OutputStreamWriter;
7. import java.io.PrintWriter;
8. import java.net.InetAddress;
9. import java.net.Socket;
11. import android.app.Activity;
12. import android.os.Bundle;
13. import android.util.Log;
14. import android.view.View;
15. import android.view.View.OnClickListener;
16. import android.widget.Button;
17. import android.widget.EditText;
18. import android.widget.TextView;
20. public class Activity01 extends Activity
21. {
22. private final String DEBUG_TAG = "Activity01";
24. private TextView mTextView=null;
25. private EditText mEditText=null;
26. private Button mButton=null;
27. /** Called when the activity is first created. */
28. @Override
29. public void onCreate(Bundle savedInstanceState)
30. {
31. super.onCreate(savedInstanceState);
32. setContentView(R.layout.main);
34. mButton = (Button)findViewById(R.id.Button01);
35. mTextView=(TextView)findViewById(R.id.TextView01);
36. mEditText=(EditText)findViewById(R.id.EditText01);
38. //登陸
39. mButton.setOnClickListener(new OnClickListener()
40. {
41. public void onClick(View v)
42. {
43. Socket socket = null;
44. String message = mEditText.getText().toString() + "\r\n";
45. try
46. {
47. //創建Socket
48. socket = new Socket("116.29.27.138",5554); //查看本機IP,每次開機都不同
49. //socket=new Socket("192.168.1.110",50000);
50. //向服務器發送消息
51. PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);
52. out.println(message);
54. //接收來自服務器的消息
55. BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
56. String msg = br.readLine();
58. if ( msg != null )
59. {
60. mTextView.setText(msg);
61. }
62. else
63. {
64. mTextView.setText("數據錯誤!");
65. }
66. //關閉流
67. out.close();
68. br.close();
69. //關閉Socket
70. socket.close();
71. }
72. catch (Exception e)
73. {
74. // TODO: handle exception
75. Log.e(DEBUG_TAG, e.toString());
76. }
77. }
78. });
79. }
80. }