Android Open Source - foodroid Login

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.wmc.ReservationClient;
/*w  ww .j  a  v  a 2  s  . c o m*/
import java.io.IOException;
import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.graphics.Color;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.AbsoluteLayout;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class Login extends Activity {
  TextView msg;
  CheckBox chkSaveInput;
  boolean registerMode = false;
  String Server;
  DatabaseHelper db;
  EditText username;
  SharedPreferences.OnSharedPreferenceChangeListener listener;
  SharedPreferences prefs;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.login);

    prefs = PreferenceManager.getDefaultSharedPreferences(this);
    SharedPreferences.Editor editor = prefs.edit();
    editor.putString("loginpref", "false");
    editor.commit();

    listener = new SharedPreferences.OnSharedPreferenceChangeListener() {
      public void onSharedPreferenceChanged(
          SharedPreferences sharedPreferences, String key) {
        if (key.equals("loginpref")) {
          if (sharedPreferences.getString("loginpref", "").equals(
              "true")) {
            SharedPreferences.Editor editor = sharedPreferences
                .edit();
            editor.putBoolean("SaveInput", chkSaveInput.isChecked());
            editor.putString("login", username.getText().toString());
            editor.putString("loginpref", "");
            editor.commit();

            EndLogin();
          }
        }

      }
    };
    prefs.registerOnSharedPreferenceChangeListener(listener);
    EditText name = (EditText) findViewById(R.id.txtName);
    name.setVisibility(View.INVISIBLE);

    TextView lblName = (TextView) findViewById(R.id.TextViewName);
    lblName.setVisibility(View.INVISIBLE);

    // Typeface font = Typeface.createFromAsset(getAssets(),
    // "BNAZANIN.TTF");
    // lblName.setTypeface(font);

    TextView lblMessage = (TextView) findViewById(R.id.txtMessage);
    lblMessage.setTextColor(Color.BLACK);

    AbsoluteLayout loginLayout = (AbsoluteLayout) findViewById(R.id.loginLayout);
    loginLayout.setBackgroundColor(Color.RED);

    chkSaveInput = (CheckBox) findViewById(R.id.checkBoxSaveInput);

    Resources res = getResources();
    Server = res.getString(R.string.Server);

    db = new DatabaseHelper(this);
  }

  @Override
  protected void onPause() {

    super.onPause();
    prefs.unregisterOnSharedPreferenceChangeListener(listener);
  }

  public void EndLogin() {

    Intent intent = this.getIntent();
    this.setResult(RESULT_OK, intent);
    this.finish();
  }

  public void login(View v) throws Exception {
    if (!registerMode) {
      EditText username = (EditText) findViewById(R.id.txtUserName);
      EditText password = (EditText) findViewById(R.id.txtPassword);

      if (Utility.isNetworkAvailable(this)) {
        HttpClient client = new DefaultHttpClient();
        HttpGet getMethod = new HttpGet("http://" + Server
            + "/RestaurantReservation/resources/login/"
            + username.getText().toString() + "/"
            + password.getText().toString());
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        try {
          String responseBody = client.execute(getMethod,
              responseHandler);
          String result = getWebServiceResult(responseBody);

          if (result.equals("success")) {

            SharedPreferences prefs = PreferenceManager
                .getDefaultSharedPreferences(this);
            SharedPreferences.Editor editor = prefs.edit();
            editor.putBoolean("SaveInput", chkSaveInput.isChecked());
            editor.putString("login", username.getText().toString());
            editor.commit();

            Intent intent = this.getIntent();
            // intent.putExtra("SOMETHING", "EXTRAS");
            this.setResult(RESULT_OK, intent);
            this.finish();
          } else {
            msg = (TextView) findViewById(R.id.txtMessage);
            msg.setText("??? ?????? ?? ??? ???? ??? ???? ??? ????");
          }
        } catch (ClientProtocolException e) {
          e.printStackTrace();
        } catch (IOException e) {
          e.printStackTrace();
        }
      } else {
        Utility.sendSMS("log/" + username.getText().toString() + "/"
            + password.getText().toString(), this);
      }
    }
    // register mode
    else {
      if (Utility.isNetworkAvailable(this)) {
        EditText name = (EditText) findViewById(R.id.txtName);
        EditText username = (EditText) findViewById(R.id.txtUserName);
        EditText password = (EditText) findViewById(R.id.txtPassword);

        HttpClient client = new DefaultHttpClient();
        HttpGet getMethod = new HttpGet("http://" + Server
            + "/RestaurantReservation/resources/register/"
            + username.getText().toString() + "/"
            + password.getText().toString() + "/"
            + name.getText().toString());
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        try {
          String responseBody = client.execute(getMethod,
              responseHandler);
          responseBody = responseBody.replace("&lt;", "<")
              .replace("&gt;", ">").replace("&amp;", "&");
          String result = getWebServiceResult(responseBody);

          if (result.equals("success")) {
            String[] fields = { "Username", "Password", "Name" };
            String[] values = { username.getText().toString(),
                password.getText().toString(),
                name.getText().toString() };
            db.InsertRow("user", fields, values);

            SharedPreferences prefs = PreferenceManager
                .getDefaultSharedPreferences(this);
            SharedPreferences.Editor editor = prefs.edit();
            editor.putBoolean("SaveInput", chkSaveInput.isChecked());
            editor.putString("login", username.getText().toString());
            editor.commit();

            Intent intent = this.getIntent();
            this.setResult(RESULT_OK, intent);
            this.finish();
          } else if (result.equals("Duplicate")) {
            msg = (TextView) findViewById(R.id.txtMessage);
            msg.setText("??? ?????? ?????? ?? ????");
          } else {
            msg = (TextView) findViewById(R.id.txtMessage);
            msg.setText("??? ?? ?????? ?? ????");
          }
        } catch (ClientProtocolException e) {
          e.printStackTrace();
        } catch (IOException e) {
          e.printStackTrace();
        }
      } else
        Toast.makeText(this, "??? ?????? ?? ???????", Toast.LENGTH_LONG)
            .show();
    }

  }

  public void register(View v) {
    registerMode = true;

    msg = (TextView) findViewById(R.id.txtMessage);
    msg.setText("");

    EditText name = (EditText) findViewById(R.id.txtName);
    name.setVisibility(View.VISIBLE);
    TextView lblName = (TextView) findViewById(R.id.TextViewName);
    lblName.setVisibility(View.VISIBLE);

    Button btnLogin = (Button) findViewById(R.id.buttonLogin);
    btnLogin.setText("??? ???");

    Button btnRegister = (Button) findViewById(R.id.buttonRegister);
    btnRegister.setVisibility(View.INVISIBLE);
  }

  String getWebServiceResult(String raw) throws Exception {
    String value = "";
    String result = "";
    DocumentBuilder builder = DocumentBuilderFactory.newInstance()
        .newDocumentBuilder();
    Document doc = builder.parse(new InputSource(new StringReader(raw)));
    NodeList res = doc.getElementsByTagName("string");

    for (int i = 0; i < res.getLength(); i++) {
      Element re = (Element) res.item(i);
      value = "";
      for (int j = 0; j < re.getChildNodes().getLength(); j++)
        value += re.getChildNodes().item(j).getNodeValue();
      result = value;
    }
    return result;
  }

}
Java Source Code List
