Java tutorial
package com.coinomi.wallet.ui; /* * 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/>. */ import android.app.Dialog; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.content.DialogInterface; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v4.app.FragmentManager; import android.view.LayoutInflater; import android.view.View; import android.widget.TextView; import com.coinomi.core.coins.CoinID; import com.coinomi.core.coins.CoinType; import com.coinomi.core.util.GenericUtils; import com.coinomi.core.wallet.AbstractAddress; import com.coinomi.wallet.AddressBookProvider; import com.coinomi.wallet.R; import javax.annotation.Nonnull; import javax.annotation.Nullable; /** * @author Andreas Schildbach * @author John L. Jegutanis */ public final class EditAddressBookEntryFragment extends DialogFragment { private static final String FRAGMENT_TAG = EditAddressBookEntryFragment.class.getName(); private static final String KEY_COIN_ID = "coin_id"; private static final String KEY_ADDRESS = "address"; private static final String KEY_SUGGESTED_ADDRESS_LABEL = "suggested_address_label"; public static void edit(final FragmentManager fm, @Nonnull final AbstractAddress address) { edit(fm, address.getType(), address, null); } public static void edit(final FragmentManager fm, @Nonnull CoinType type, @Nonnull final AbstractAddress address) { edit(fm, type, address, null); } public static void edit(final FragmentManager fm, @Nonnull CoinType type, @Nonnull final AbstractAddress address, @Nullable final String suggestedAddressLabel) { final DialogFragment newFragment = EditAddressBookEntryFragment.instance(type, address, suggestedAddressLabel); newFragment.show(fm, FRAGMENT_TAG); } private static EditAddressBookEntryFragment instance(@Nonnull CoinType type, @Nonnull final AbstractAddress address, @Nullable final String suggestedAddressLabel) { final EditAddressBookEntryFragment fragment = new EditAddressBookEntryFragment(); final Bundle args = new Bundle(); args.putString(KEY_COIN_ID, type.getId()); args.putSerializable(KEY_ADDRESS, address); args.putString(KEY_SUGGESTED_ADDRESS_LABEL, suggestedAddressLabel); fragment.setArguments(args); return fragment; } private Context context; private ContentResolver contentResolver; @Override public void onAttach(final Context context) { super.onAttach(context); this.context = context; this.contentResolver = context.getContentResolver(); } @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { final Bundle args = getArguments(); final CoinType type = CoinID.typeFromId(args.getString(KEY_COIN_ID)); final AbstractAddress address = (AbstractAddress) args.getSerializable(KEY_ADDRESS); final String suggestedAddressLabel = args.getString(KEY_SUGGESTED_ADDRESS_LABEL); final LayoutInflater inflater = LayoutInflater.from(context); final Uri uri = AddressBookProvider.contentUri(context.getPackageName(), type).buildUpon() .appendPath(address.toString()).build(); final String label = AddressBookProvider.resolveLabel(context, address); final boolean isAdd = label == null; final DialogBuilder dialog = new DialogBuilder(context); final View view = inflater.inflate(R.layout.edit_address_book_entry_dialog, null); final TextView viewAddress = (TextView) view.findViewById(R.id.edit_address_book_entry_address); viewAddress.setText(GenericUtils.addressSplitToGroups(address)); final TextView viewLabel = (TextView) view.findViewById(R.id.edit_address_book_entry_label); viewLabel.setText(label != null ? label : suggestedAddressLabel); dialog.setView(view); final DialogInterface.OnClickListener onClickListener = new DialogInterface.OnClickListener() { @Override public void onClick(final DialogInterface dialog, final int which) { if (which == DialogInterface.BUTTON_POSITIVE) { final String newLabel = viewLabel.getText().toString().trim(); if (!newLabel.isEmpty()) { final ContentValues values = new ContentValues(); values.put(AddressBookProvider.KEY_LABEL, newLabel); if (isAdd) contentResolver.insert(uri, values); else contentResolver.update(uri, values, null, null); } else if (!isAdd) { contentResolver.delete(uri, null, null); } } else if (which == DialogInterface.BUTTON_NEUTRAL) { contentResolver.delete(uri, null, null); } dismiss(); } }; dialog.setPositiveButton(R.string.button_save, onClickListener); if (!isAdd) dialog.setNeutralButton(R.string.button_delete, onClickListener); dialog.setNegativeButton(R.string.button_cancel, onClickListener); return dialog.create(); } }