Java tutorial
/** * Copyright (C) 2010-2012 Regis Montoya (aka r3gis - www.r3gis.fr) * This file is part of CSipSimple. * * CSipSimple 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. * If you own a pjsip commercial license you can also redistribute it * and/or modify it under the terms of the GNU Lesser General Public License * as an android library. * * CSipSimple 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 CSipSimple. If not, see <http://www.gnu.org/licenses/>. */ package com.csipsimple.wizards.impl; import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.text.Editable; import android.text.TextUtils; import android.text.TextWatcher; import android.view.View; import android.view.View.OnClickListener; import android.widget.EditText; import android.widget.ImageView; import android.widget.Toast; import com.csipsimple.R; import com.csipsimple.api.SipProfile; import com.csipsimple.utils.Log; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import java.io.BufferedReader; import java.io.InputStreamReader; import java.lang.ref.WeakReference; import java.net.Socket; import java.net.URL; import java.util.regex.Matcher; import java.util.regex.Pattern; public class MondotalkCreate extends Activity implements OnClickListener, TextWatcher { private final static String API_KEY = "{7EB11554-7BAD-D25D-1D17-B070D4AC459F}"; private static final String THIS_FILE = "MondotalkCreate"; private ImageView captchaImg; private View captchaProgress; private EditText firstName; private EditText lastName; private EditText emailAddr; private EditText countryCode; private EditText phone; private EditText captcha; private ProgressDialog progressDialog; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.w_mondotalk_create); findViewById(R.id.cancel_bt).setOnClickListener(this); findViewById(R.id.save_bt).setOnClickListener(this); captchaImg = (ImageView) findViewById(R.id.cw_captcha_img); captchaProgress = findViewById(R.id.cw_captcha_progress); firstName = (EditText) findViewById(R.id.cw_first_name); lastName = (EditText) findViewById(R.id.cw_last_name); emailAddr = (EditText) findViewById(R.id.cw_email); countryCode = (EditText) findViewById(R.id.cw_country_code); phone = (EditText) findViewById(R.id.cw_phone); captcha = (EditText) findViewById(R.id.cw_captcha); firstName.addTextChangedListener(this); emailAddr.addTextChangedListener(this); captcha.addTextChangedListener(this); // Ok, crappy thread creation to retrieve captcha in bg Thread t = new Thread() { public void run() { retrieveCaptcha(); }; }; t.start(); canSave(); } @Override protected void onDestroy() { super.onDestroy(); if (captchaBitmap != null) { captchaBitmap.recycle(); } } @Override public void onClick(View v) { int id = v.getId(); if (id == R.id.cancel_bt) { setResult(RESULT_CANCELED); finish(); } else if (id == R.id.save_bt) { if (canSave()) { progressDialog = ProgressDialog.show(this, getResources().getText(R.string.create_account), getResources().getText(R.string.loading), true); Thread t = new Thread() { public void run() { saveOnline(getEditTextValue(firstName), getEditTextValue(lastName), getEditTextValue(emailAddr), getEditTextValue(phone), getEditTextValue(countryCode), getEditTextValue(captcha)); }; }; t.start(); } } } private final static int MSG_CAPTCHA_LOADED = 0; private final static int MSG_SAVE_DONE = 1; private final static int MSG_SAVE_ERROR = 2; private Handler mHander = new MondotalkHandler(this); private static class MondotalkHandler extends Handler { WeakReference<MondotalkCreate> w; MondotalkHandler(MondotalkCreate wizard) { w = new WeakReference<MondotalkCreate>(wizard); } public void dispatchMessage(Message msg) { MondotalkCreate wizard = w.get(); if (wizard == null) { return; } switch (msg.what) { case MSG_CAPTCHA_LOADED: if (wizard.captchaBitmap != null && wizard.captchaImg != null) { wizard.captchaImg.setImageBitmap(wizard.captchaBitmap); wizard.captchaImg.setVisibility(View.VISIBLE); wizard.captchaProgress.setVisibility(View.GONE); } break; case MSG_SAVE_DONE: if (wizard.progressDialog != null) { wizard.progressDialog.dismiss(); } AccountCreationResult res = (AccountCreationResult) msg.obj; Intent it = wizard.getIntent(); it.putExtra(SipProfile.FIELD_USERNAME, res.username); it.putExtra(SipProfile.FIELD_DATA, res.password); wizard.setResult(RESULT_OK, it); wizard.finish(); break; case MSG_SAVE_ERROR: if (wizard.progressDialog != null) { wizard.progressDialog.dismiss(); } Toast toast = Toast.makeText(wizard, (String) msg.obj, Toast.LENGTH_LONG); toast.show(); break; } }; }; private String captchaKey = ""; private String captchaUrl = ""; private Bitmap captchaBitmap = null; private Pattern soapResultPattern = Pattern.compile("^.*<result xsi:type=\"xsd:string\">(.*)</result>.*$"); private boolean retrieveCaptcha() { String ip; try { Socket socket = new Socket("api001.mondotalk.com", 80); ip = socket.getLocalAddress().toString(); } catch (Exception e) { Log.e(THIS_FILE, "Can't get local ip address", e); ip = "127.0.0.1"; } try { // No SOAP lib.... bourrinage ! String requestURL = "https://api001.mondotalk.com/webservices/captcha.php"; HttpPost httpPost = new HttpPost(requestURL); httpPost.addHeader("SOAPAction", "\"Captcha\""); httpPost.addHeader("Content-Type", "text/xml"); // prepare POST body String body = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<SOAP-ENV:Envelope " + " SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" " + " xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\"" + " xmlns:xsi=\"http://www.w3.org/1999/XMLSchema-instance\" " + " xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"" + " xmlns:xsd=\"http://www.w3.org/1999/XMLSchema\" >" + "<SOAP-ENV:Body>" + "<Captcha SOAP-ENC:root=\"1\">" + "<v1 xsi:type=\"xsd:string\">" + API_KEY + "</v1>" + "<v2 xsi:type=\"xsd:string\">" + ip + "</v2>" + "<v3 xsi:type=\"xsd:string\">520</v3>" + "<v4 xsi:type=\"xsd:string\">200</v4>" + "</Captcha>" + "</SOAP-ENV:Body>" + "</SOAP-ENV:Envelope>"; // set POST body HttpEntity entity; entity = new StringEntity(body); httpPost.setEntity(entity); HttpClient httpClient = new DefaultHttpClient(); // Create a response handler HttpResponse httpResponse = httpClient.execute(httpPost); if (httpResponse.getStatusLine().getStatusCode() == 200) { InputStreamReader isr = new InputStreamReader(httpResponse.getEntity().getContent()); BufferedReader br = new BufferedReader(isr); String line = null; while ((line = br.readLine()) != null) { if (!TextUtils.isEmpty(line)) { Matcher matcher = soapResultPattern.matcher(line); if (matcher.matches()) { String strValue = matcher.group(1).trim(); if (!TextUtils.isEmpty(strValue)) { String[] strValues = strValue.split("\\|"); if (strValues.length > 1) { captchaUrl = strValues[0]; captchaKey = strValues[1]; } } break; } } } if (TextUtils.isEmpty(captchaKey)) { return false; } Log.d(THIS_FILE, "Captcha retrieved " + captchaKey + " and " + captchaUrl); captchaBitmap = BitmapFactory.decodeStream((new URL(captchaUrl)).openConnection().getInputStream()); mHander.sendEmptyMessage(MSG_CAPTCHA_LOADED); } else { Log.e(THIS_FILE, "Something went wrong while retrieving the captcha webservice "); } } catch (Exception e) { Log.e(THIS_FILE, "Something went wrong while retrieving the captcha", e); } return false; } /** * Client side form validation. * * @return true if the form is valid for save */ private boolean canSave() { boolean isValid = true; isValid &= checkEmptyText(firstName); isValid &= checkEmptyText(emailAddr); isValid &= checkEmptyText(captcha); // Update the status of the save button findViewById(R.id.save_bt).setEnabled(isValid); return isValid; } /** * Get the value of an edit text a safe way * @param txt The edit text to get value of * @return the Text value of the edit text */ private String getEditTextValue(EditText txt) { if (txt == null) { return ""; } String res = txt.getText().toString(); if (TextUtils.isEmpty(res)) { return ""; } return res; } private boolean checkEmptyText(EditText txt) { if (TextUtils.isEmpty(txt.getText().toString())) { txt.setError("Empty"); return false; } txt.setError(null); return true; } private class AccountCreationResult { final String username; final String password; AccountCreationResult(String uname, String pwd) { username = uname; password = pwd; } } private boolean saveOnline(String firstName, String lastName, String contactEmail, String contactPhone, String countryCode, String captcha) { try { // No SOAP lib.... bourrinage ! String requestURL = "https://api001.mondotalk.com/webservices/createaccount.php"; HttpPost httpPost = new HttpPost(requestURL); httpPost.addHeader("SOAPAction", "\"CreateAccount\""); httpPost.addHeader("Content-Type", "text/xml"); // prepare POST body String body = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "<SOAP-ENV:Envelope " + " SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" " + " xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\"" + " xmlns:xsi=\"http://www.w3.org/1999/XMLSchema-instance\" " + " xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"" + " xmlns:xsd=\"http://www.w3.org/1999/XMLSchema\" >" + "<SOAP-ENV:Body>" + "<CreateAccount SOAP-ENC:root=\"1\">" + "<v1 xsi:type=\"xsd:string\">" + API_KEY + "</v1>" + "<v2 xsi:type=\"xsd:string\">" + firstName + "</v2>" + "<v3 xsi:type=\"xsd:string\">" + lastName + "</v3>" + "<v4 xsi:type=\"xsd:string\">" + contactEmail + "</v4>" + "<v5 xsi:type=\"xsd:string\">" + contactPhone + "</v5>" + "<v6 xsi:type=\"xsd:string\">" + countryCode + "</v6>" + "<v7 xsi:type=\"xsd:string\">" + captcha + "</v7>" + "<v8 xsi:type=\"xsd:string\">" + captchaKey + "</v8>" + "</CreateAccount>" + "</SOAP-ENV:Body>" + "</SOAP-ENV:Envelope>"; // set POST body HttpEntity entity; entity = new StringEntity(body); httpPost.setEntity(entity); HttpClient httpClient = new DefaultHttpClient(); // Create a response handler HttpResponse httpResponse = httpClient.execute(httpPost); if (httpResponse.getStatusLine().getStatusCode() == 200) { InputStreamReader isr = new InputStreamReader(httpResponse.getEntity().getContent()); BufferedReader br = new BufferedReader(isr); String line = null; String username = ""; String password = ""; while ((line = br.readLine()) != null) { if (!TextUtils.isEmpty(line)) { Matcher matcher = soapResultPattern.matcher(line); if (matcher.matches()) { String strValue = matcher.group(1).trim(); if (!TextUtils.isEmpty(strValue)) { String[] strValues = strValue.split("\\|"); if (strValues.length > 1) { username = strValues[0]; password = strValues[1]; } } break; } } } Log.d(THIS_FILE, "Account created " + username); if (TextUtils.isEmpty(username) || TextUtils.isEmpty(password)) { mHander.sendMessage( mHander.obtainMessage(MSG_SAVE_ERROR, "Invalid datas to create the account")); return false; } AccountCreationResult res = new AccountCreationResult(username, password); mHander.sendMessage(mHander.obtainMessage(MSG_SAVE_DONE, res)); return true; } else { Log.e(THIS_FILE, "Something went wrong while retrieving the captcha webservice "); } } catch (Exception e) { Log.e(THIS_FILE, "Can't create account", e); } mHander.sendMessage(mHander.obtainMessage(MSG_SAVE_ERROR, "Error while creating the account")); return false; } @Override public void afterTextChanged(Editable s) { canSave(); } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // Nothing to do } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // Nothing to do } }