Java tutorial
/* * Copyright (C) 2012-2016 The Android Money Manager Ex Project Team * * 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 com.money.manager.ex.investment.watchlist; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.support.v7.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ImageView; import android.widget.SimpleCursorAdapter; import android.widget.Spinner; import android.widget.Toast; import com.afollestad.materialdialogs.DialogAction; import com.afollestad.materialdialogs.MaterialDialog; import com.crashlytics.android.answers.Answers; import com.crashlytics.android.answers.CustomEvent; import com.mikepenz.google_material_typeface_library.GoogleMaterial; import com.mikepenz.iconics.IconicsDrawable; import com.mikepenz.mmex_icon_font_typeface_library.MMXIconFont; import com.money.manager.ex.Constants; import com.money.manager.ex.account.AccountEditActivity; import com.money.manager.ex.R; import com.money.manager.ex.core.AnswersEvents; import com.money.manager.ex.core.UIHelper; import com.money.manager.ex.datalayer.AccountRepository; import com.money.manager.ex.datalayer.StockFields; import com.money.manager.ex.datalayer.StockHistoryRepository; import com.money.manager.ex.log.ErrorRaisedEvent; import com.money.manager.ex.datalayer.StockRepository; import com.money.manager.ex.domainmodel.Account; import com.money.manager.ex.investment.ISecurityPriceUpdater; import com.money.manager.ex.investment.PriceCsvExport; import com.money.manager.ex.investment.QuoteProviders; import com.money.manager.ex.investment.SecurityPriceUpdaterFactory; import com.money.manager.ex.investment.events.AllPricesDownloadedEvent; import com.money.manager.ex.investment.events.PriceDownloadedEvent; import com.money.manager.ex.investment.events.PriceUpdateRequestEvent; import com.money.manager.ex.servicelayer.AccountService; import com.money.manager.ex.settings.InvestmentSettings; import com.money.manager.ex.sync.SyncManager; import com.shamanland.fonticon.FontIconDrawable; import org.greenrobot.eventbus.EventBus; import org.greenrobot.eventbus.Subscribe; import org.parceler.Parcels; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.List; import info.javaperformance.money.Money; import timber.log.Timber; /** * The main fragment for the watchlist. Contains the list and everything else. * Not sure why it was done in two fragments. Probably because the list can not have additional items? */ public class WatchlistFragment extends Fragment { private static final String KEY_ACCOUNT_ID = "WatchlistFragment:AccountId"; private static final String KEY_ACCOUNT = "WatchlistFragment:Account"; /** * @param accountId ID Account to be display * @return instance of Watchlist fragment with transactions for the given account. */ public static WatchlistFragment newInstance(int accountId) { WatchlistFragment fragment = new WatchlistFragment(); Bundle args = new Bundle(); args.putInt(KEY_ACCOUNT_ID, accountId); fragment.setArguments(args); fragment.setFragmentName(WatchlistFragment.class.getSimpleName() + "_" + Integer.toString(accountId)); return fragment; } private WatchlistItemsFragment mDataFragment; private String mFragmentName; private StockRepository mStockRepository; private Account mAccount; // price update counter. Used to know when all the prices are done downloading. private int mUpdateCounter; private int mToUpdateTotal; private WatchlistViewHolder viewHolder; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); loadAccount(); if ((savedInstanceState != null)) { mAccount = Parcels.unwrap(savedInstanceState.getParcelable(KEY_ACCOUNT)); } mUpdateCounter = 0; Answers.getInstance().logCustom(new CustomEvent(AnswersEvents.Watchlist.name())); } @Override public void onStart() { super.onStart(); EventBus.getDefault().register(this); } @Override public void onStop() { super.onStop(); EventBus.getDefault().unregister(this); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if ((savedInstanceState != null)) { mAccount = Parcels.unwrap(savedInstanceState.getParcelable(KEY_ACCOUNT)); } if (container == null) return null; View view = inflater.inflate(R.layout.fragment_account_transactions, container, false); if (mAccount == null) { loadAccount(); } this.viewHolder = new WatchlistViewHolder(); initializeListHeader(inflater); // manage fragment FragmentTransaction transaction = getChildFragmentManager().beginTransaction(); mDataFragment = WatchlistItemsFragment.newInstance(); // set arguments and preferences of fragment Bundle arguments = new Bundle(); arguments.putInt(WatchlistItemsFragment.KEY_ACCOUNT_ID, getAccountId()); mDataFragment.setArguments(arguments); mDataFragment.setListHeader(this.viewHolder.mListHeader); mDataFragment.setAutoStarLoader(false); // add fragment transaction.replace(R.id.fragmentMain, mDataFragment, getFragmentName()); transaction.commit(); // refresh user interface if (mAccount != null) { setImageViewFavorite(); } setHasOptionsMenu(true); // initializeSwipeToRefresh(view); return view; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); // hide the title ActionBar actionBar = getActionBar(); if (actionBar != null) { actionBar.setDisplayShowTitleEnabled(false); } } @Override public void onResume() { super.onResume(); initializeAccountsSelector(); selectCurrentAccount(); // restart loader reloadData(); } // Menu /** * Called once when the menu is being created. */ @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); // add options menu for watchlist inflater.inflate(R.menu.menu_watchlist, menu); // custom icons UIHelper uiHelper = new UIHelper(getActivity()); IconicsDrawable icon; MenuItem menuItem; menuItem = menu.findItem(R.id.menu_update_prices); if (menuItem != null) { icon = uiHelper.getIcon(GoogleMaterial.Icon.gmd_file_download); menuItem.setIcon(icon); } menuItem = menu.findItem(R.id.menu_export_prices); if (menuItem != null) { icon = uiHelper.getIcon(GoogleMaterial.Icon.gmd_share); menuItem.setIcon(icon); } menuItem = menu.findItem(R.id.menu_purge_history); if (menuItem != null) { icon = uiHelper.getIcon(GoogleMaterial.Icon.gmd_content_cut); menuItem.setIcon(icon); } // call create option menu of fragment mDataFragment.onCreateOptionsMenu(menu, inflater); } /** * Handle menu item click. * Update prices. * @param item Menu item selected * @return indicator whether the selection was handled */ @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); switch (itemId) { case R.id.menu_update_prices: confirmPriceUpdate(); break; case R.id.menu_export_prices: exportPrices(); break; case R.id.menu_purge_history: purgePriceHistory(); break; case R.id.menu_change_provider: changePriceProvider(); break; default: break; } return super.onOptionsItemSelected(item); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putParcelable(KEY_ACCOUNT, Parcels.wrap(mAccount)); } // Events @Subscribe public void onEvent(AllPricesDownloadedEvent event) { reloadData(); } @Subscribe public void onEvent(PriceDownloadedEvent event) { onPriceDownloaded(event.symbol, event.price, event.date); } @Subscribe public void onEvent(PriceUpdateRequestEvent event) { onPriceUpdateRequested(event.symbol); } @Subscribe public void onEvent(ErrorRaisedEvent event) { new UIHelper(getActivity()).showToast(event.message); } /** * Start Loader to retrieve data */ public void reloadData() { if (mDataFragment != null) { mDataFragment.reloadData(); } } public String getFragmentName() { return mFragmentName; } public void setFragmentName(String fragmentName) { this.mFragmentName = fragmentName; } // Private /** * Called from asynchronous task when a first price is downloaded. * @param symbol Stock symbol * @param price Stock price * @param date Date of the price */ private void onPriceDownloaded(String symbol, Money price, Date date) { // prices updated. if (TextUtils.isEmpty(symbol)) return; // update the current price of the stock. StockRepository repo = getStockRepository(); repo.updateCurrentPrice(symbol, price); // update price history record. StockHistoryRepository historyRepo = mDataFragment.getStockHistoryRepository(); historyRepo.addStockHistoryRecord(symbol, price, date); mUpdateCounter += 1; if (mUpdateCounter == mToUpdateTotal) { completePriceUpdate(); } } /** * Price update requested from the securities list context menu. * @param symbol Stock symbol for which to fetch the price. */ private void onPriceUpdateRequested(String symbol) { // reset counter & max. mToUpdateTotal = 1; mUpdateCounter = 0; // http://stackoverflow.com/questions/1005073/initialization-of-an-arraylist-in-one-line List<String> symbols = new ArrayList<>(); symbols.add(symbol); ISecurityPriceUpdater updater = SecurityPriceUpdaterFactory.getUpdaterInstance(getActivity()); updater.downloadPrices(symbols); // result received via onEvent. } /** * refresh UI, show favorite icon */ private void setImageViewFavorite() { if (mAccount.getFavorite()) { this.viewHolder.imgAccountFav.setBackgroundResource(R.drawable.ic_star); } else { this.viewHolder.imgAccountFav.setBackgroundResource(R.drawable.ic_star_outline); } } private void changePriceProvider() { // show the list with provider choices. Preselect the current one. InvestmentSettings settings = new InvestmentSettings(getActivity()); QuoteProviders currentProvider = settings.getQuoteProvider(); int currentIndex = QuoteProviders.indexOf(currentProvider); new MaterialDialog.Builder(getActivity()).title(R.string.quote_provider).items(QuoteProviders.names()) .itemsCallbackSingleChoice(currentIndex, new MaterialDialog.ListCallbackSingleChoice() { @Override public boolean onSelection(MaterialDialog dialog, View itemView, int which, CharSequence text) { //change provider QuoteProviders newProvider = QuoteProviders.valueOf(text.toString()); InvestmentSettings settings = new InvestmentSettings(getActivity()); settings.setQuoteProvider(newProvider); return true; } }).show(); } private void completePriceUpdate() { // this call is made from async task so have to get back to the main thread. getActivity().runOnUiThread(new Runnable() { @Override public void run() { // refresh the data. mDataFragment.reloadData(); // notify about db file change. new SyncManager(getActivity()).dataChanged(); } }); } private StockRepository getStockRepository() { if (mStockRepository == null) { mStockRepository = new StockRepository(getActivity()); } return mStockRepository; } private String[] getAllShownSymbols() { int itemCount = mDataFragment.getListAdapter().getCount(); String[] result = new String[itemCount]; for (int i = 0; i < itemCount; i++) { Cursor cursor = (Cursor) mDataFragment.getListAdapter().getItem(i); String symbol = cursor.getString(cursor.getColumnIndex(StockFields.SYMBOL)); result[i] = symbol; } return result; } private void exportPrices() { PriceCsvExport export = new PriceCsvExport(getActivity()); boolean result = false; try { String prefix; if (mAccount != null) { prefix = mAccount.getName(); } else { prefix = getActivity().getString(R.string.all_accounts); } result = export.exportPrices(mDataFragment.getListAdapter(), prefix); } catch (IOException ex) { Timber.e(ex, "exporting stock prices"); } // todo: e result. (?) } private void confirmPriceUpdate() { new MaterialDialog.Builder(getContext()).title(R.string.download) .icon(FontIconDrawable.inflate(getContext(), R.xml.ic_question)) .content(R.string.confirm_price_download).positiveText(android.R.string.ok) .onPositive(new MaterialDialog.SingleButtonCallback() { @Override public void onClick(@NonNull MaterialDialog dialog, @NonNull DialogAction which) { // get the list of symbols String[] symbols = getAllShownSymbols(); mToUpdateTotal = symbols.length; mUpdateCounter = 0; // update security prices ISecurityPriceUpdater updater = SecurityPriceUpdaterFactory .getUpdaterInstance(getContext()); updater.downloadPrices(Arrays.asList(symbols)); // results received via event dialog.dismiss(); } }).negativeText(android.R.string.cancel).onNegative(new MaterialDialog.SingleButtonCallback() { @Override public void onClick(@NonNull MaterialDialog dialog, @NonNull DialogAction which) { dialog.dismiss(); } }).build().show(); } private int getAccountId() { if (mAccount == null) { return Constants.NOT_SET; } return mAccount.getId(); } private ActionBar getActionBar() { if (!(getActivity() instanceof AppCompatActivity)) return null; AppCompatActivity activity = (AppCompatActivity) getActivity(); ActionBar actionBar = activity.getSupportActionBar(); return actionBar; } private Spinner getAccountsSpinner() { // get from custom view, not the menu. ActionBar actionBar = getActionBar(); if (actionBar == null) return null; Spinner spinner = (Spinner) actionBar.getCustomView().findViewById(R.id.spinner); return spinner; } private void initializeAccountsSelector() { ActionBar actionBar = getActionBar(); if (actionBar == null) return; actionBar.setDisplayShowTitleEnabled(false); actionBar.setCustomView(R.layout.spinner); actionBar.setDisplayShowCustomEnabled(true); Spinner spinner = getAccountsSpinner(); if (spinner == null) return; // Load accounts into the spinner. AccountService accountService = new AccountService(getActivity()); accountService.loadInvestmentAccountsToSpinner(spinner, true); // e account switching. spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { // switch account. Cursor cursor = (Cursor) adapterView.getItemAtPosition(i); Account account = Account.from(cursor); int accountId = account.getId(); switchAccount(accountId); } @Override public void onNothingSelected(AdapterView<?> adapterView) { } }); } private void initializeListHeader(LayoutInflater inflater) { this.viewHolder.mListHeader = (ViewGroup) inflater.inflate(R.layout.fragment_watchlist_header, null, false); // favorite icon this.viewHolder.imgAccountFav = (ImageView) this.viewHolder.mListHeader .findViewById(R.id.imageViewAccountFav); // set listener click on favorite icon for change image this.viewHolder.imgAccountFav.setOnClickListener(new OnClickListener() { public void onClick(View v) { mAccount.setFavorite(!mAccount.getFavorite()); AccountRepository repo = new AccountRepository(getActivity()); boolean saved = repo.save(mAccount); if (!saved) { Toast.makeText(getActivity(), getActivity().getResources().getString(R.string.db_update_failed), Toast.LENGTH_LONG).show(); } else { setImageViewFavorite(); } } }); // Edit account this.viewHolder.imgGotoAccount = (ImageView) this.viewHolder.mListHeader .findViewById(R.id.imageViewGotoAccount); this.viewHolder.imgGotoAccount.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(getActivity(), AccountEditActivity.class); intent.putExtra(AccountEditActivity.KEY_ACCOUNT_ID, getAccountId()); intent.setAction(Intent.ACTION_EDIT); startActivity(intent); } }); } // private void initializeSwipeToRefresh(View view) { // final SwipeRefreshLayout layout = (SwipeRefreshLayout) view.findViewById(R.id.swipeLayout); // // layout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { // @Override // public void onRefresh() { // // update prices // // todo: do not display the manual progress binaryDialog // String[] symbols = getAllShownSymbols(); // ISecurityPriceUpdater updater = SecurityPriceUpdaterFactory // .getUpdaterInstance(getContext()); // updater.downloadPrices(Arrays.asList(symbols)); // // layout.setRefreshing(false); // } // }); // } private void loadAccount() { Bundle args = getArguments(); if (args == null) return; if (!args.containsKey(KEY_ACCOUNT_ID)) return; int accountId = args.getInt(KEY_ACCOUNT_ID); this.mAccount = new AccountRepository(getActivity()).load(accountId); } private void purgePriceHistory() { new MaterialDialog.Builder(getContext()).title(R.string.purge_history) .icon(FontIconDrawable.inflate(getContext(), R.xml.ic_question)) .content(R.string.purge_history_confirmation).positiveText(android.R.string.ok) .onPositive(new MaterialDialog.SingleButtonCallback() { @Override public void onClick(@NonNull MaterialDialog dialog, @NonNull DialogAction which) { StockHistoryRepository history = new StockHistoryRepository(getActivity()); int deleted = history.deleteAllPriceHistory(); if (deleted > 0) { new SyncManager(getActivity()).dataChanged(); Toast.makeText(getActivity(), getActivity().getString(R.string.purge_history_complete), Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getActivity(), getActivity().getString(R.string.purge_history_failed), Toast.LENGTH_SHORT).show(); } dialog.dismiss(); } }).negativeText(android.R.string.cancel).onNegative(new MaterialDialog.SingleButtonCallback() { @Override public void onClick(@NonNull MaterialDialog dialog, @NonNull DialogAction which) { dialog.dismiss(); } }).build().show(); } /** * Select the current account in the accounts dropdown. */ private void selectCurrentAccount() { Spinner spinner = getAccountsSpinner(); if (spinner == null) return; // find account SimpleCursorAdapter adapter = (SimpleCursorAdapter) spinner.getAdapter(); if (adapter == null) return; Cursor cursor = adapter.getCursor(); int position = Constants.NOT_SET; for (int i = 0; i < adapter.getCount(); i++) { cursor.moveToPosition(i); String accountIdString = cursor.getString(cursor.getColumnIndex(Account.ACCOUNTID)); int accountId = Integer.parseInt(accountIdString); if (accountId == getAccountId()) { position = i; break; } } spinner.setSelection(position); } private void switchAccount(int accountId) { if (accountId == getAccountId()) return; // switch account. Reload transactions. mAccount = new AccountRepository(getActivity()).load(accountId); mDataFragment.accountId = accountId; mDataFragment.reloadData(); // hide account details bar if all accounts are selected if (accountId == Constants.NOT_SET) { /* Can't remove header view once it has been added. Ref: http://stackoverflow.com/questions/13603888/remove-header-from-listview */ // mDataFragment.getListView().removeHeaderView(mListHeader); // mListHeader.setVisibility(View.GONE); /* Just hide the contents and the row will automatically shrink (but not disappear). */ this.viewHolder.mListHeader.findViewById(R.id.headerRow).setVisibility(View.GONE); } else { if (mDataFragment.getListView().getHeaderViewsCount() == 0) { mDataFragment.getListView().addHeaderView(this.viewHolder.mListHeader); } // mListHeader.setVisibility(View.VISIBLE); this.viewHolder.mListHeader.findViewById(R.id.headerRow).setVisibility(View.VISIBLE); } } }