Java tutorial
/* * Copyright 2011-2014 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 cc.mintcoin.wallet.ui; import java.util.ArrayList; import javax.annotation.Nonnull; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.support.v4.widget.SimpleCursorAdapter; import android.support.v4.widget.SimpleCursorAdapter.ViewBinder; import android.text.ClipboardManager; import android.view.View; import android.widget.ListView; import android.widget.TextView; import com.actionbarsherlock.app.SherlockListFragment; import com.actionbarsherlock.view.ActionMode; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; import com.google.bitcoin.core.Address; import com.google.bitcoin.core.AddressFormatException; import com.google.bitcoin.core.Transaction; import com.google.bitcoin.uri.BitcoinURI; import cc.mintcoin.wallet.AddressBookProvider; import cc.mintcoin.wallet.Constants; import cc.mintcoin.wallet.PaymentIntent; import cc.mintcoin.wallet.R; import cc.mintcoin.wallet.ui.InputParser.StringInputParser; import cc.mintcoin.wallet.util.BitmapFragment; import cc.mintcoin.wallet.util.Qr; import cc.mintcoin.wallet.util.WalletUtils; /** * @author Andreas Schildbach */ public final class SendingAddressesFragment extends SherlockListFragment implements LoaderManager.LoaderCallbacks<Cursor> { private AbstractWalletActivity activity; private ClipboardManager clipboardManager; private LoaderManager loaderManager; private SimpleCursorAdapter adapter; private String walletAddressesSelection; private final Handler handler = new Handler(); private static final int REQUEST_CODE_SCAN = 0; @Override public void onAttach(final Activity activity) { super.onAttach(activity); this.activity = (AbstractWalletActivity) activity; this.clipboardManager = (ClipboardManager) activity.getSystemService(Context.CLIPBOARD_SERVICE); this.loaderManager = getLoaderManager(); } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); adapter = new SimpleCursorAdapter(activity, R.layout.address_book_row, null, new String[] { AddressBookProvider.KEY_LABEL, AddressBookProvider.KEY_ADDRESS }, new int[] { R.id.address_book_row_label, R.id.address_book_row_address }, 0); adapter.setViewBinder(new ViewBinder() { @Override public boolean setViewValue(final View view, final Cursor cursor, final int columnIndex) { if (!AddressBookProvider.KEY_ADDRESS.equals(cursor.getColumnName(columnIndex))) return false; ((TextView) view).setText(WalletUtils.formatHash(cursor.getString(columnIndex), Constants.ADDRESS_FORMAT_GROUP_SIZE, Constants.ADDRESS_FORMAT_LINE_SIZE)); return true; } }); setListAdapter(adapter); loaderManager.initLoader(0, null, this); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); setEmptyText(getString(R.string.address_book_empty_text)); } @Override public void onDestroy() { loaderManager.destroyLoader(0); super.onDestroy(); } @Override public void onActivityResult(final int requestCode, final int resultCode, final Intent intent) { if (requestCode == REQUEST_CODE_SCAN && resultCode == Activity.RESULT_OK) { final String input = intent.getStringExtra(ScanActivity.INTENT_EXTRA_RESULT); new StringInputParser(input) { @Override protected void handlePaymentIntent(final PaymentIntent paymentIntent) { // workaround for "IllegalStateException: Can not perform this action after onSaveInstanceState" handler.postDelayed(new Runnable() { @Override public void run() { if (paymentIntent.hasAddress()) EditAddressBookEntryFragment.edit(getFragmentManager(), paymentIntent.getAddress().toString()); else dialog(activity, null, R.string.address_book_options_scan_title, R.string.address_book_options_scan_invalid); } }, 500); } @Override protected void handleDirectTransaction(final Transaction transaction) { cannotClassify(input); } @Override protected void error(final int messageResId, final Object... messageArgs) { dialog(activity, null, R.string.address_book_options_scan_title, messageResId, messageArgs); } }.parse(); } } @Override public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) { inflater.inflate(R.menu.sending_addresses_fragment_options, menu); final PackageManager pm = activity.getPackageManager(); menu.findItem(R.id.sending_addresses_options_scan) .setVisible(pm.hasSystemFeature(PackageManager.FEATURE_CAMERA) || pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT)); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(final MenuItem item) { switch (item.getItemId()) { case R.id.sending_addresses_options_paste: handlePasteClipboard(); return true; case R.id.sending_addresses_options_scan: handleScan(); return true; } return super.onOptionsItemSelected(item); } private void handlePasteClipboard() { if (clipboardManager.hasText()) { final String input = clipboardManager.getText().toString().trim(); new StringInputParser(input) { @Override protected void handlePaymentIntent(final PaymentIntent paymentIntent) { if (paymentIntent.hasAddress()) EditAddressBookEntryFragment.edit(getFragmentManager(), paymentIntent.getAddress().toString()); else dialog(activity, null, R.string.address_book_options_paste_from_clipboard_title, R.string.address_book_options_paste_from_clipboard_invalid); } @Override protected void handleDirectTransaction(final Transaction transaction) { cannotClassify(input); } @Override protected void error(final int messageResId, final Object... messageArgs) { dialog(activity, null, R.string.address_book_options_paste_from_clipboard_title, messageResId, messageArgs); } }.parse(); } else { activity.toast(R.string.address_book_options_paste_from_clipboard_empty); } } private void handleScan() { startActivityForResult(new Intent(activity, ScanActivity.class), REQUEST_CODE_SCAN); } @Override public void onListItemClick(final ListView l, final View v, final int position, final long id) { activity.startActionMode(new ActionMode.Callback() { @Override public boolean onCreateActionMode(final ActionMode mode, final Menu menu) { final MenuInflater inflater = mode.getMenuInflater(); inflater.inflate(R.menu.sending_addresses_context, menu); return true; } @Override public boolean onPrepareActionMode(final ActionMode mode, final Menu menu) { final String label = getLabel(position); mode.setTitle(label); return true; } @Override public boolean onActionItemClicked(final ActionMode mode, final MenuItem item) { switch (item.getItemId()) { case R.id.sending_addresses_context_send: handleSend(getAddress(position)); mode.finish(); return true; case R.id.sending_addresses_context_edit: EditAddressBookEntryFragment.edit(getFragmentManager(), getAddress(position)); mode.finish(); return true; case R.id.sending_addresses_context_remove: handleRemove(getAddress(position)); mode.finish(); return true; case R.id.sending_addresses_context_show_qr: handleShowQr(getAddress(position)); mode.finish(); return true; case R.id.sending_addresses_context_copy_to_clipboard: handleCopyToClipboard(getAddress(position)); mode.finish(); return true; } return false; } @Override public void onDestroyActionMode(final ActionMode mode) { } private String getAddress(final int position) { final Cursor cursor = (Cursor) adapter.getItem(position); return cursor.getString(cursor.getColumnIndexOrThrow(AddressBookProvider.KEY_ADDRESS)); } private String getLabel(final int position) { final Cursor cursor = (Cursor) adapter.getItem(position); return cursor.getString(cursor.getColumnIndexOrThrow(AddressBookProvider.KEY_LABEL)); } }); } private void handleSend(final String address) { try { SendCoinsActivity.start(activity, PaymentIntent.fromAddress(address, null)); } catch (final AddressFormatException x) { // cannot happen, address was picked from address book throw new RuntimeException(x); } } private void handleRemove(final String address) { final Uri uri = AddressBookProvider.contentUri(activity.getPackageName()).buildUpon().appendPath(address) .build(); activity.getContentResolver().delete(uri, null, null); } private void handleShowQr(final String address) { final String uri = BitcoinURI.convertToBitcoinURI(address, null, null, null); final int size = (int) (256 * getResources().getDisplayMetrics().density); BitmapFragment.show(getFragmentManager(), Qr.bitmap(uri, size)); } private void handleCopyToClipboard(final String address) { clipboardManager.setText(address); activity.toast(R.string.wallet_address_fragment_clipboard_msg); } @Override public Loader<Cursor> onCreateLoader(final int id, final Bundle args) { final Uri uri = AddressBookProvider.contentUri(activity.getPackageName()); return new CursorLoader(activity, uri, null, AddressBookProvider.SELECTION_NOTIN, new String[] { walletAddressesSelection != null ? walletAddressesSelection : "" }, AddressBookProvider.KEY_LABEL + " COLLATE LOCALIZED ASC"); } @Override public void onLoadFinished(final Loader<Cursor> loader, final Cursor data) { adapter.swapCursor(data); } @Override public void onLoaderReset(final Loader<Cursor> loader) { adapter.swapCursor(null); } public void setWalletAddresses(@Nonnull final ArrayList<Address> addresses) { final StringBuilder builder = new StringBuilder(); for (final Address address : addresses) builder.append(address.toString()).append(","); if (addresses.size() > 0) builder.setLength(builder.length() - 1); walletAddressesSelection = builder.toString(); } }