android - 投稿データアンドロイドをphpに送信しない

Question

メールと名前と電話番号をサーバーphpに同時に送信したいという問題があります

私が取り組んでいる解決策はありますか?

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public class MainActivity extends Activity {

EditText name;
EditText email;
EditText tlf;
Button btn;
string resultat=null;
InputStream is = null;
StringBuilder sb = null ;
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.home_layout);
    name= (EditText)findViewById(R.id.name);
    email = (EditText)findViewById(R.id.email);
    tlf = (EditText)findViewById(R.id.tlf);
    btn = (Button)findViewById(R.id.btn);
}
public void envoyerMessage (View v){
    HttpClient client= new DefaultHttpClient();
    HttpPost post=new HttpPost("http://xxxxcom/app.php");
    String  nam = name.getText().toString();
    String  mail = email.getText().toString();
    String  fon = tlf.getText().toString();
    if(log.length() >0){
        try {
            List<NameValuePair> donnees = new ArrayList<NameValuePair>(1);
            donnees.add(new BasicNameValuePair("id", nam ));
            donnees.add(new BasicNameValuePair("mal", mail ));
            donnees.add(new BasicNameValuePair("fn", fon ));
            post.setEntity(new UrlEncodedFormEntity(donnees));
            client.execute(post);
            login.setText("");
            Toast.makeText(this, "valid login", Toast.LENGTH_SHORT).show();

ありがとう