我在PC上开发了一个服务器应用程序，android应用程序连接到该PC并返回一些值。 它们都运行良好，但问题是我发出命令后，应用程序停止向服务器发送任何内容，我必须重新连接。 我想一个while子句可以解决问题，但我不知道在哪里放它。
- 这是我的MainActivity Class
package com.example.homepageunu;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.app.AlertDialog;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.os.Build;
public class MainActivity extends ActionBarActivity {
AlertDialog ad;
public static String exportTxtbox;
private Editable ip_name;
private static String ip;
public static String SERVERIP; //= "192.168.0.103"; //your computer IP address
public static final int SERVERPORT = 2003;
private TCPClient mTcpClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
EditText txt_name = (EditText) findViewById(R.id.input_IP);
ip_name = txt_name.getEditableText();
SERVERIP = ip_name.toString();
new Thread(new connectTask()).start();
Intent intent = new Intent(this, DisplayMessageActivity.class);
startActivity(intent);
}
public class connectTask implements Runnable
{
public void run()
{
mTcpClient = new TCPClient(SERVERIP,SERVERPORT);
mTcpClient.startComm();
}
}
}
- 这是我的TCPclient类
package com.example.homepageunu;
import android.util.Log;
import android.widget.Toast;
import java.io.*;
import java.net.InetAddress;
import java.net.Socket;
import java.util.Arrays;
public class TCPClient {
public static String SERVERIP;
public static int SERVERPORT ;
private boolean bRunning;
public Socket mSocket ;
public static PrintWriter out;
public static final byte DATA = (byte) 254;
public static final byte COMMAND = (byte) 253;
public static final byte C_GET_HOST_RESOLUTION = 10;
public static final byte DATA_LENGTH = 10;
private static byte[] outbuff = new byte[DATA_LENGTH] ;
private static byte[] intbuff = new byte[DATA_LENGTH] ;
public TCPClient(String szServerip, int uiServerPort)
{
//Save desired ip and port
SERVERIP = szServerip;
SERVERPORT = uiServerPort;
bRunning = false;
}
public boolean startComm()
{
try
{
InetAddress serverAddr = InetAddress.getByName(SERVERIP);
//create a socket to make the connection with the server
mSocket = new Socket(serverAddr, 2003);
bRunning = true;
this.out = new PrintWriter(mSocket.getOutputStream(), true);
return true;
}
catch (Exception e)
{
Log.e("TCP", "S: Error", e);
return false;
}
finally
{
}
}
public boolean sendBytes(byte[] aub_BytesToSend)
{
if(bRunning)
{
try
{
OutputStream mOutStream = mSocket.getOutputStream();
InputStream mInstream = mSocket.getInputStream();
mOutStream.write(aub_BytesToSend);
mInstream.read(intbuff, 0, DATA_LENGTH);
Log.i("TCP", Arrays.toString(intbuff));
return true;
}
catch (IOException e)
{
e.printStackTrace();
return false;
}
}
else
{
return false;
}
}
public void waitForResponse()
{
}
public interface OnMessageReceived
{
public void messageReceived(String message);
}
}
- 这是我的DisplayMessageActivity类
package com.example.homepageunu;
import java.io.PrintWriter;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
public class DisplayMessageActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_message);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.display_message, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_display_message,
container, false);
return rootView;
}
}
public void modifyVolume(View view) {
Intent intent = new Intent(this, VolumeSetup.class);
startActivity(intent);
}
/*1*/ public void SetPlay(View view)
{
TCPClient.out.println("1");
}
/*2*/ public void SetForward(View view)
{
TCPClient.out.println("2");
}
/*3*/ public void SetBackward(View view)
{
TCPClient.out.println("3");
}
/*4*/ public void SetStartup(View view)
{
TCPClient.out.println("4");
}
/*5*/ public void SetVolUp(View view)
{
TCPClient.out.println("5");
}
/*6*/ public void SetVolDown(View view)
{
TCPClient.out.println("6");
}
/*7*/ public void SetMute(View view)
{
TCPClient.out.println("7");
}
/*1*/ public void SetStop(View view)
{
TCPClient.out.println("0");
}
}
- 这是我的IpActivity课程
package com.example.homepageunu;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
public class IpActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ip);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment()).commit();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.ip, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_ip, container,
false);
return rootView;
}
}
}