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; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import org.apache.commons.io.IOUtils; import piuk.EventListeners; import piuk.blockchain.android.R; import piuk.blockchain.android.WalletApplication; import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.ProgressDialog; import android.content.DialogInterface; import android.content.SharedPreferences.Editor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.os.Handler; import android.preference.PreferenceManager; import android.support.v4.app.DialogFragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; /** * @author Andreas Schildbach */ public final class NewAccountFragment extends DialogFragment { private static final String FRAGMENT_TAG = NewAccountFragment.class.getName(); 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 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://blockchain.info/kaptcha.jpg"); captchaImage.post(new Runnable() { public void run() { captchaImage.setImageBitmap(b); } }); } catch (Exception e) { captchaImage.post(new Runnable() { public void run() { Toast.makeText(getActivity().getApplication(), R.string.toast_error_downloading_captcha, Toast.LENGTH_LONG).show(); } }); e.printStackTrace(); } } }).start(); } public static NewAccountFragment 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 NewAccountFragment newFragment = instance(); newFragment.application = application; newFragment.show(ft, FRAGMENT_TAG); return newFragment; } @Override public void onCancel(DialogInterface dialog) { WelcomeFragment.show(getFragmentManager(), application); } static NewAccountFragment instance() { final NewAccountFragment fragment = new NewAccountFragment(); return fragment; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { final View view = inflater.inflate(R.layout.new_account_dialog, null); 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() < 10 || 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 { if (!application.getRemoteWallet().isNew()) return; application.getRemoteWallet().setTemporyPassword(password.getText().toString()); if (!application.getRemoteWallet().remoteSave(captcha.getText().toString())) { throw new Exception("Unknown Error inserting wallet"); } EventListeners.invokeWalletDidChange(); application.hasDecryptionError = false; handler.post(new Runnable() { public void run() { progressDialog.dismiss(); dismiss(); Toast.makeText(getActivity().getApplication(), R.string.new_account_success, Toast.LENGTH_LONG).show(); Editor edit = PreferenceManager .getDefaultSharedPreferences(application.getApplicationContext()) .edit(); edit.putString("guid", application.getRemoteWallet().getGUID()); edit.putString("sharedKey", application.getRemoteWallet().getSharedKey()); edit.putString("password", password.getText().toString()); if (edit.commit()) { application.checkIfWalletHasUpdatedAndFetchTransactions(); } else { Activity activity = (Activity) getActivity(); final Builder dialog = new AlertDialog.Builder(activity); dialog.setTitle(R.string.error_pairing_wallet); dialog.setMessage("Error saving preferences"); dialog.setNeutralButton(R.string.button_dismiss, null); dialog.show(); } } }); } catch (final Exception e) { e.printStackTrace(); 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(); } }); return view; } /* @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { super.onCreateDialog(savedInstanceState); System.out.println("On Create Dialog"); final FragmentActivity activity = getActivity(); final Builder dialog = new AlertDialog.Builder(activity) .setTitle(R.string.new_account_title); Dialog _dialog = dialog.create(); _dialog.setOnCancelListener(new OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { System.out.print("On Cancel"); WelcomeFragment.show(getFragmentManager(), (WalletApplication) activity.getApplication()); } }); _dialog.setOnDismissListener(new OnDismissListener() { @Override public void onDismiss(DialogInterface dialog) { System.out.print("On Dismiss"); WelcomeFragment.show(getFragmentManager(), (WalletApplication) activity.getApplication()); } }); return _dialog; }*/ }