Java tutorial
package org.hansel.myAlert; /*This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. Created by Javier Mejia @zenyagami zenyagami@gmail.com */ import java.util.Calendar; import org.hancel.http.HttpUtils; import org.hansel.myAlert.Log.Log; import org.hansel.myAlert.Utils.PreferenciasHancel; import org.hansel.myAlert.Utils.SimpleCrypto; import org.hansel.myAlert.Utils.Util; import org.hansel.myAlert.dataBase.UsuarioDAO; import org.json.JSONObject; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.annotation.SuppressLint; import android.annotation.TargetApi; import android.content.Context; import android.content.Intent; import android.os.AsyncTask; import android.os.Build; import android.os.Bundle; import android.text.TextUtils; import android.view.View; import android.view.View.OnClickListener; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import com.actionbarsherlock.view.MenuItem; public class Registro extends org.holoeverywhere.app.Activity { private EditText vUsuario; private EditText vPassword; private EditText vEmail; private String mUsuario; private String mPassword; private String mEmail; private UserCreateTask mAuthTask; private TextView errores; private View mLoginFormView; private View mLoginStatusView; private String mErrores; private TextView mLoginStatusMessageView; private UsuarioDAO usuarioDAO; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.registro_layout); getSupportActionBar().setDisplayHomeAsUpEnabled(true); vUsuario = (EditText) findViewById(R.id.reg_fullname); vPassword = (EditText) findViewById(R.id.reg_password); vEmail = (EditText) findViewById(R.id.reg_email); errores = (TextView) findViewById(R.id.err_registro); Button btnCreate = (Button) findViewById(R.id.btnRegister); btnCreate.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub AttempCreate(); } }); Button btnCancelar = (Button) findViewById(R.id.btnCancelar); btnCancelar.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent i = new Intent(Registro.this, Login.class); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); if (Util.isICS()) i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK); finish(); } }); usuarioDAO = new UsuarioDAO(this); usuarioDAO.open(); mLoginFormView = findViewById(R.id.reg_form); mLoginStatusView = findViewById(R.id.reg_status); mLoginStatusMessageView = (TextView) findViewById(R.id.reg_status_message); } protected void AttempCreate() { if (mAuthTask != null) { return; } //obtenemos datos mUsuario = vUsuario.getText().toString().trim(); mPassword = vPassword.getText().toString().trim(); mEmail = vEmail.getText().toString().trim(); // mEmailContacto = vEmailContacto.getText().toString(); boolean cancel = false; View focusView = null; // Check for a valid user. if (TextUtils.isEmpty(mUsuario)) { vUsuario.setError(getString(R.string.error_field_required)); focusView = vUsuario; cancel = true; } if (TextUtils.isEmpty(mPassword)) { vPassword.setError(getString(R.string.error_field_required)); focusView = vPassword; cancel = true; } if (TextUtils.isEmpty(mEmail)) { vEmail.setError(getString(R.string.error_field_required)); focusView = vEmail; cancel = true; } else if (!mEmail.contains("@")) { vEmail.setError("Correo no vlido"); focusView = vEmail; cancel = true; } /*if (TextUtils.isEmpty(mEmailContacto) ) { vEmail.setError(getString(R.string.error_field_required)); focusView = vEmailContacto; cancel = true; }else */ if (cancel) { // There was an error; don't attempt login and focus the first // form field with an error. focusView.requestFocus(); } else { //escondemos teclado try { ((InputMethodManager) this.getSystemService(Context.INPUT_METHOD_SERVICE)) .hideSoftInputFromWindow(vPassword.getWindowToken(), 0); } catch (Exception ex) { Log.v("Error al esconder teclado: " + ex.getMessage()); } // Show a progress spinner, and kick off a background task to // perform the user login attempt. mLoginStatusMessageView.setText(R.string.login_progress_signing_in); mAuthTask = new UserCreateTask(); mAuthTask.execute((Void) null); } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: finish(); break; } return super.onOptionsItemSelected(item); } /** * Shows the progress UI and hides the login form. */ @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2) private void showProgress(final boolean show) { // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow // for very easy animations. If available, use these APIs to fade-in // the progress spinner. if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) { int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime); mLoginStatusView.setVisibility(View.VISIBLE); mLoginStatusView.animate().setDuration(shortAnimTime).alpha(show ? 1 : 0) .setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE); } }); mLoginFormView.setVisibility(View.VISIBLE); mLoginFormView.animate().setDuration(shortAnimTime).alpha(show ? 0 : 1) .setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); } }); } else { // The ViewPropertyAnimator APIs are not available, so simply show // and hide the relevant UI components. mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE); mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE); } } @SuppressLint("DefaultLocale") public class UserCreateTask extends AsyncTask<Void, Void, Boolean> { @Override protected Boolean doInBackground(Void... arg0) { //conexion a la BD para obtener Login. try { String IMEI = Util.getIMEI(getApplicationContext()); String id = SimpleCrypto.md5(String.valueOf(Calendar.getInstance().getTimeInMillis())); JSONObject result = HttpUtils.Register(id, mUsuario, SimpleCrypto.md5(mPassword), mEmail, "", IMEI); try { if (result.optString("resultado").equals("ok")) { //parseamos data del ID JSONObject jObject = result.getJSONObject("descripcion"); int androidId = Integer.parseInt(jObject.getString("usr-id")); PreferenciasHancel.setDeviceId(getApplicationContext(), id); PreferenciasHancel.setUserId(getApplicationContext(), androidId); Util.insertNewTrackId(getApplicationContext(), 0); Util.setLoginOkInPreferences(getApplicationContext(), true); int idUsr = (int) usuarioDAO.Insertar(mUsuario, mPassword, mEmail); if (idUsr != 0) { return true; } } else if (result.optString("resultado").equals("error")) { JSONObject jObject = result.getJSONObject("descripcion"); mErrores = jObject.getString("usuario"); //buscamos el error: return false; } } catch (Exception e) { Log.v("Error al parsear Json: " + result); mErrores = "Error al obtener los datos"; return false; } return false; } catch (Exception ex) { mErrores = "Error al intentar la conexin"; Log.v("Error login: " + ex.getMessage()); } return false; } @Override protected void onPreExecute() { super.onPreExecute(); showProgress(true); findViewById(R.id.actions1).setVisibility(View.GONE); mErrores = ""; errores.setVisibility(View.GONE); } @Override protected void onPostExecute(final Boolean success) { mAuthTask = null; showProgress(false); if (success) { //mostramos el Intent //pasamos al siguiente paso Intent i = new Intent(getApplicationContext(), ConfigContactsActivity.class); i.putExtra("registro", true); /*Intent i = new Intent(getApplicationContext(),MainActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); */ startActivity(i); } else { errores.setVisibility(View.VISIBLE); findViewById(R.id.actions1).setVisibility(View.VISIBLE); errores.setText(mErrores); Toast.makeText(getApplicationContext(), "Error en login:\n" + mErrores, Toast.LENGTH_SHORT).show(); } } @Override protected void onCancelled() { mAuthTask = null; findViewById(R.id.actions1).setVisibility(View.VISIBLE); showProgress(false); } } }