从android应用程序发送数据到mysql

Question

我正在尝试将一些数据发送到MySQL数据库，并且不起作用，我已经放置了一些log.e来控制问题。我返回“无效的IP地址”，加上我收到错误“NetworkOnMainThreadException”我看了几个解决方案，但找不到合适的东西。谢谢你的帮助。

public class AgregarPalabra extends Activity {
String palabraIngles;
String palabraSpain;
InputStream is=null;
String result=null;
String line=null;
int code;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.agregar);
    final EditText ingles=(EditText) findViewById(R.id.inputIngles);
    final EditText spain=(EditText) findViewById(R.id.inputSpain);
    Button agregar=(Button) findViewById(R.id.btnAgregar);
    agregar.setOnClickListener(new View.OnClickListener() { 
    @Override
    public void onClick(View v) {
    palabraIngles = ingles.getText().toString();
    palabraSpain = spain.getText().toString();
    insert();
    }
});
}
public void insert() {
   ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
   nameValuePairs.add(new BasicNameValuePair("ingles",palabraIngles));
   nameValuePairs.add(new BasicNameValuePair("spain",palabraSpain));
   String url = "http://localhost/agregar.php";
    try {
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(url);
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = httpclient.execute(httppost); 
        HttpEntity entity = response.getEntity();
        is = entity.getContent();
        Log.e("pass 1", "connection success ");
} catch(Exception e) {
    Log.e("Fail 1", e.toString());
    Log.e("INFO", palabraIngles);
    Log.e("INFO", palabraSpain);
    Toast.makeText(getApplicationContext(), "Invalid IP Address",
    Toast.LENGTH_LONG).show();
} try {
        BufferedReader reader = new BufferedReader (new InputStreamReader(is,"iso-8859-1"),8);
        StringBuilder sb = new StringBuilder();
        while ((line = reader.readLine()) != null)
    {
            sb.append(line + "\n");
        }
        is.close();
        result = sb.toString();
    Log.e("pass 2", "connection success ");
}
    catch(Exception e)
{
        Log.e("Fail 2", e.toString());
} try {
        JSONObject json_data = new JSONObject(result);
        code=(json_data.getInt("code"));

        if(code==1)
        {
           Toast.makeText(getBaseContext(), "Inserted Successfully",
           Toast.LENGTH_SHORT).show();
        } else {
             Toast.makeText(getBaseContext(), "Sorry, Try Again",
             Toast.LENGTH_LONG).show();
        }
} catch(Exception e){
        Log.e("Fail 3", e.toString());
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}}