android socket通信实例程序（下）

package real.client.com; import java.io.IOException; import java.io.PrintStream; import java.net.Socket; import java.net.UnknownHostException; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class RealclientActivity extends Activity { /* 服务器地址 */ private final String SERVER_HOST_IP = "192.168.1.100"; /* 服务器端口 */ private final int SERVER_HOST_PORT = 9500; private Button btnConnect; private Button btnSend; private EditText editSend; private Socket socket; private PrintStream output; public void toastText(String message) { Toast.makeText(this, message, Toast.LENGTH_LONG).show(); } public void handleException(Exception e, String prefix) { e.printStackTrace(); toastText(prefix + e.toString()); } /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); initView(); btnConnect.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { initClientSocket(); } }); btnSend.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View v) { sendMessage(editSend.getText().toString()); } }); } public void initView() { btnConnect = (Button)findViewById(R.id.btnConnect); btnSend = (Button)findViewById(R.id.btnSend); editSend = (EditText)findViewById(R.id.sendMsg); btnSend.setEnabled(false); editSend.setEnabled(false); } public void closeSocket() { try { output.close(); socket.close(); } catch (IOException e) { handleException(e, "close exception: "); } } private void initClientSocket() { try { /* 连接服务器 */ socket = new Socket(SERVER_HOST_IP, SERVER_HOST_PORT); /* 获取输出流 */ output = new PrintStream(socket.getOutputStream(), true, "utf-8"); btnConnect.setEnabled(false); editSend.setEnabled(true); btnSend.setEnabled(true); } catch (UnknownHostException e) { handleException(e, "unknown host exception: " + e.toString()); } catch (IOException e) { handleException(e, "io exception: " + e.toString()); } } private void sendMessage(String msg) { output.print(msg); } }