title: unfortunately has stopped android
body: <p>I have a problem. When I run my android program I have a error: "unfortunately has stopped android". Why I see this error when I run application? hear is my file:</p>
  
  <pre><code>enter code here
  import java.io.IOException;
  import java.io.PrintWriter;
  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;
  
  public class SimpleClientActivityActivity extends Activity {
  
  private Socket client;
  private PrintWriter printwriter;
  private EditText textField;
  private Button button;
  private String messsage;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.main);
  
   //textField = (EditText) findViewById(R.id.editText1); //reference to the text field
    button = (Button) findViewById(R.id.button1);   //reference to the send button
  
    //Button press event listener
    button.setOnClickListener(new View.OnClickListener() {
  
     public void onClick(View v) {
  
     //messsage = textField.getText().toString(); //get the text message on the text      field
      //textField.setText("");      //Reset the text field to blank
  
    try {
  
   client = new Socket("10.0.2.2", 4444);  //connect to server
   printwriter = new PrintWriter(client.getOutputStream(),true);
   printwriter.write(messsage);  //write the message to output stream
  
   printwriter.flush();
   printwriter.close();
   client.close();   //closing the connection
  
    } catch (UnknownHostException e) {
     e.printStackTrace();
    } catch (IOException e) {
     e.printStackTrace();
    }
    }
   });
  
   }
  }
  </code></pre>
  
  <p>I would like to send sms to PC server with my adnroid client</p>