Java tutorial
/* * Copyright 2011-2012 the original author or authors. * * 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/>. */ package piuk.blockchain.android.ui.dialogs; import java.io.IOException; import java.lang.ref.WeakReference; import java.net.MalformedURLException; import java.net.URL; import java.util.ArrayList; import java.util.List; import org.apache.commons.io.IOUtils; import piuk.EventListeners; import piuk.blockchain.android.Constants; import piuk.blockchain.android.R; import piuk.blockchain.android.WalletApplication; import piuk.blockchain.android.ui.AbstractWalletActivity; import piuk.blockchain.android.ui.PinEntryActivity; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; import android.app.ProgressDialog; import android.content.DialogInterface; import android.content.SharedPreferences.Editor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.os.Bundle; import android.os.Handler; import android.preference.PreferenceManager; import android.support.v4.app.DialogFragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.view.ContextThemeWrapper; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.view.WindowManager; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; /** * @author Andreas Schildbach */ public final class NewAccountDialog extends DialogFragment { private static final String FRAGMENT_TAG = NewAccountDialog.class.getName(); private static List<WeakReference<NewAccountDialog>> fragmentRefs = new ArrayList<WeakReference<NewAccountDialog>>(); private WalletApplication application; public static Bitmap loadBitmap(String url) throws MalformedURLException, IOException { Bitmap bitmap = null; final byte[] data = IOUtils.toByteArray(new URL(url).openStream()); BitmapFactory.Options options = new BitmapFactory.Options(); bitmap = BitmapFactory.decodeByteArray(data, 0, data.length, options); return bitmap; } public static void hide() { for (WeakReference<NewAccountDialog> fragmentRef : fragmentRefs) { if (fragmentRef != null && fragmentRef.get() != null) { try { fragmentRef.get().dismissAllowingStateLoss(); } catch (Exception e) { e.printStackTrace(); } } } } public void refreshCaptcha(View view) { final ImageView captchaImage = (ImageView) view.findViewById(R.id.captcha_image); new Thread(new Runnable() { public void run() { try { final Bitmap b = loadBitmap("https://" + Constants.BLOCKCHAIN_DOMAIN + "/kaptcha.jpg"); captchaImage.post(new Runnable() { public void run() { captchaImage.setImageBitmap(b); } }); } catch (Exception e) { captchaImage.post(new Runnable() { public void run() { Activity activity = getActivity(); if (activity == null) return; Toast.makeText(activity, R.string.toast_error_downloading_captcha, Toast.LENGTH_LONG) .show(); } }); e.printStackTrace(); } } }).start(); } public static NewAccountDialog show(final FragmentManager fm, WalletApplication application) { final DialogFragment prev = (DialogFragment) fm.findFragmentById(R.layout.new_account_dialog); final FragmentTransaction ft = fm.beginTransaction(); if (prev != null) { prev.dismiss(); ft.remove(prev); } ft.addToBackStack(null); final NewAccountDialog newFragment = instance(); newFragment.application = application; newFragment.show(ft, FRAGMENT_TAG); return newFragment; } @Override public void onCancel(DialogInterface dialog) { WelcomeDialog.show(getFragmentManager(), getActivity(), application); } static NewAccountDialog instance() { final NewAccountDialog fragment = new NewAccountDialog(); fragmentRefs.add(new WeakReference<NewAccountDialog>(fragment)); return fragment; } @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { super.onCreateDialog(savedInstanceState); final FragmentActivity activity = getActivity(); final LayoutInflater inflater = LayoutInflater.from(activity); final Builder dialog = new AlertDialog.Builder(new ContextThemeWrapper(activity, R.style.Theme_Dialog)) .setTitle(R.string.new_account_title); final View view = inflater.inflate(R.layout.new_account_dialog, null); dialog.setView(view); final Button createButton = (Button) view.findViewById(R.id.create_button); final TextView password = (TextView) view.findViewById(R.id.password); final TextView password2 = (TextView) view.findViewById(R.id.password2); final TextView captcha = (TextView) view.findViewById(R.id.captcha); refreshCaptcha(view); createButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { final WalletApplication application = (WalletApplication) getActivity().getApplication(); if (password.getText().length() < 11 || password.getText().length() > 255) { Toast.makeText(application, R.string.new_account_password_length_error, Toast.LENGTH_LONG) .show(); return; } if (!password.getText().toString().equals(password2.getText().toString())) { Toast.makeText(application, R.string.new_account_password_mismatch_error, Toast.LENGTH_LONG) .show(); return; } if (captcha.getText().length() == 0) { Toast.makeText(application, R.string.new_account_no_kaptcha_error, Toast.LENGTH_LONG).show(); return; } final ProgressDialog progressDialog = ProgressDialog.show(getActivity(), "", getString(R.string.creating_account), true); progressDialog.show(); final Handler handler = new Handler(); new Thread() { @Override public void run() { try { try { application.generateNewWallet(); } catch (Exception e1) { throw new Exception("Error Generating Wallet"); } application.getRemoteWallet().setTemporyPassword(password.getText().toString()); if (!application.getRemoteWallet().remoteSave(captcha.getText().toString())) { throw new Exception("Unknown Error Inserting wallet"); } EventListeners.invokeWalletDidChange(); handler.post(new Runnable() { public void run() { try { progressDialog.dismiss(); dismiss(); Toast.makeText(getActivity().getApplication(), R.string.new_account_success, Toast.LENGTH_LONG).show(); PinEntryActivity.clearPrefValues(application); Editor edit = PreferenceManager .getDefaultSharedPreferences(application.getApplicationContext()) .edit(); edit.putString("guid", application.getRemoteWallet().getGUID()); edit.putString("sharedKey", application.getRemoteWallet().getSharedKey()); AbstractWalletActivity activity = (AbstractWalletActivity) getActivity(); if (edit.commit()) { application.checkWalletStatus(activity); } else { throw new Exception("Error saving preferences"); } } catch (Exception e) { e.printStackTrace(); application.clearWallet(); Toast.makeText(getActivity().getApplication(), e.getLocalizedMessage(), Toast.LENGTH_LONG).show(); } } }); } catch (final Exception e) { e.printStackTrace(); application.clearWallet(); handler.post(new Runnable() { public void run() { progressDialog.dismiss(); refreshCaptcha(view); captcha.setText(null); Toast.makeText(getActivity().getApplication(), e.getLocalizedMessage(), Toast.LENGTH_LONG).show(); } }); } } }.start(); } }); Dialog d = dialog.create(); WindowManager.LayoutParams lp = new WindowManager.LayoutParams(); lp.dimAmount = 0; lp.width = WindowManager.LayoutParams.FILL_PARENT; lp.height = WindowManager.LayoutParams.WRAP_CONTENT; d.show(); d.getWindow().setAttributes(lp); d.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); return d; } }