Java tutorial
/* * Copyright 2015 Udacity, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.jpventura.alexandria; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.view.MenuItemCompat; import android.support.v7.widget.ShareActionProvider; import android.util.Patterns; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import com.jpventura.alexandria.data.AlexandriaContract; import com.jpventura.alexandria.services.BookService; import com.jpventura.alexandria.services.DownloadImage; public class BookDetail extends Fragment implements LoaderManager.LoaderCallbacks<Cursor> { public static final String EAN_KEY = "EAN"; private final int LOADER_ID = 10; private View rootView; private String ean; private String bookTitle; private ShareActionProvider shareActionProvider; public BookDetail() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } @Override public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Bundle arguments = getArguments(); if (arguments != null) { ean = arguments.getString(BookDetail.EAN_KEY); getLoaderManager().restartLoader(LOADER_ID, null, this); } rootView = inflater.inflate(R.layout.fragment_full_book, container, false); rootView.findViewById(R.id.delete_button).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent bookIntent = new Intent(getActivity(), BookService.class); bookIntent.putExtra(BookService.EAN, ean); bookIntent.setAction(BookService.DELETE_BOOK); getActivity().startService(bookIntent); getActivity().getSupportFragmentManager().popBackStack(); } }); return rootView; } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.book_detail, menu); MenuItem menuItem = menu.findItem(R.id.action_share); shareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(menuItem); } @Override public android.support.v4.content.Loader<Cursor> onCreateLoader(int id, Bundle args) { return new CursorLoader(getActivity(), AlexandriaContract.BookEntry.buildFullBookUri(Long.parseLong(ean)), null, null, null, null); } @Override public void onLoadFinished(android.support.v4.content.Loader<Cursor> loader, Cursor data) { if (!data.moveToFirst()) { return; } bookTitle = data.getString(data.getColumnIndex(AlexandriaContract.BookEntry.TITLE)); ((TextView) rootView.findViewById(R.id.fullBookTitle)).setText(bookTitle); Intent shareIntent = new Intent(Intent.ACTION_SEND); shareIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT); shareIntent.setType("text/plain"); shareIntent.putExtra(Intent.EXTRA_TEXT, getString(R.string.share_text) + bookTitle); shareActionProvider.setShareIntent(shareIntent); String bookSubTitle = data.getString(data.getColumnIndex(AlexandriaContract.BookEntry.SUBTITLE)); ((TextView) rootView.findViewById(R.id.fullBookSubTitle)).setText(bookSubTitle); String desc = data.getString(data.getColumnIndex(AlexandriaContract.BookEntry.DESC)); ((TextView) rootView.findViewById(R.id.fullBookDesc)).setText(desc); String authors = data.getString(data.getColumnIndex(AlexandriaContract.AuthorEntry.AUTHOR)); String[] authorsArr = authors.split(","); ((TextView) rootView.findViewById(R.id.authors)).setLines(authorsArr.length); ((TextView) rootView.findViewById(R.id.authors)).setText(authors.replace(",", "\n")); String imgUrl = data.getString(data.getColumnIndex(AlexandriaContract.BookEntry.IMAGE_URL)); if (Patterns.WEB_URL.matcher(imgUrl).matches()) { new DownloadImage((ImageView) rootView.findViewById(R.id.fullBookCover)).execute(imgUrl); rootView.findViewById(R.id.fullBookCover).setVisibility(View.VISIBLE); } String categories = data.getString(data.getColumnIndex(AlexandriaContract.CategoryEntry.CATEGORY)); ((TextView) rootView.findViewById(R.id.categories)).setText(categories); if (rootView.findViewById(R.id.right_container) != null) { rootView.findViewById(R.id.backButton).setVisibility(View.INVISIBLE); } } @Override public void onLoaderReset(android.support.v4.content.Loader<Cursor> loader) { } @Override public void onPause() { super.onDestroyView(); if (MainActivity.IS_TABLET && rootView.findViewById(R.id.right_container) == null) { getActivity().getSupportFragmentManager().popBackStack(); } } }