Java tutorial
/* * Shares Analysis * Copyright (C) 2016 Adithya J * * 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.adithya321.sharesanalysis.fragments; import android.app.DatePickerDialog; import android.app.Dialog; import android.content.DialogInterface; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.design.widget.FloatingActionButton; import android.support.v4.app.Fragment; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.helper.ItemTouchHelper; import android.util.Log; 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.view.WindowManager; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.DatePicker; import android.widget.EditText; import android.widget.Spinner; import android.widget.Toast; import com.adithya321.sharesanalysis.R; import com.adithya321.sharesanalysis.activities.ShareSalesDetailActivity; import com.adithya321.sharesanalysis.adapters.ShareSalesAdapter; import com.adithya321.sharesanalysis.database.DatabaseHandler; import com.adithya321.sharesanalysis.database.Purchase; import com.adithya321.sharesanalysis.database.Share; import com.adithya321.sharesanalysis.recyclerviewdrag.OnStartDragListener; import com.adithya321.sharesanalysis.recyclerviewdrag.SimpleItemTouchHelperCallback; import com.adithya321.sharesanalysis.utils.AndroidUtils; import com.adithya321.sharesanalysis.utils.StringUtils; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.List; import java.util.Locale; import io.realm.Realm; public class ShareSalesFragment extends Fragment implements OnStartDragListener { private DatabaseHandler databaseHandler; private List<Share> sharesList; private int year_start, month_start, day_start; private RecyclerView salesRecyclerView; private ShareSalesAdapter shareSalesAdapter; private MenuItem actionProgressItem, actionRefreshItem; private ItemTouchHelper mItemTouchHelper; @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { ViewGroup root = (ViewGroup) inflater.inflate(R.layout.fragment_share_sales, container, false); databaseHandler = new DatabaseHandler(getContext()); salesRecyclerView = (RecyclerView) root.findViewById(R.id.sales_recycler_view); setRecyclerViewAdapter(); FloatingActionButton sellShareFab = (FloatingActionButton) root.findViewById(R.id.sell_share_fab); sellShareFab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final Dialog dialog = new Dialog(getContext()); dialog.setTitle("Sell Share Holdings"); dialog.setContentView(R.layout.dialog_sell_share_holdings); dialog.getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT); dialog.show(); final Spinner spinner = (Spinner) dialog.findViewById(R.id.existing_spinner); ArrayList<String> shares = new ArrayList<>(); for (Share share : sharesList) { shares.add(share.getName()); } ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_spinner_item, shares); spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(spinnerAdapter); Calendar calendar = Calendar.getInstance(); year_start = calendar.get(Calendar.YEAR); month_start = calendar.get(Calendar.MONTH) + 1; day_start = calendar.get(Calendar.DAY_OF_MONTH); final Button selectDate = (Button) dialog.findViewById(R.id.select_date); selectDate.setText(new StringBuilder().append(day_start).append("/").append(month_start).append("/") .append(year_start)); selectDate.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Dialog dialog = new DatePickerDialog(getActivity(), onDateSetListener, year_start, month_start - 1, day_start); dialog.setOnDismissListener(new DialogInterface.OnDismissListener() { @Override public void onDismiss(DialogInterface dialog) { selectDate.setText(new StringBuilder().append(day_start).append("/") .append(month_start).append("/").append(year_start)); } }); dialog.show(); } }); Button sellShareBtn = (Button) dialog.findViewById(R.id.sell_share_btn); sellShareBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Purchase purchase = new Purchase(); purchase.setId(databaseHandler.getNextKey("purchase")); purchase.setName(spinner.getSelectedItem().toString()); String stringStartDate = year_start + " " + month_start + " " + day_start; DateFormat format = new SimpleDateFormat("yyyy MM dd", Locale.ENGLISH); try { Date date = format.parse(stringStartDate); purchase.setDate(date); } catch (Exception e) { Toast.makeText(getActivity(), "Invalid Date", Toast.LENGTH_SHORT).show(); return; } EditText quantity = (EditText) dialog.findViewById(R.id.no_of_shares); try { purchase.setQuantity(Integer.parseInt(quantity.getText().toString())); } catch (Exception e) { Toast.makeText(getActivity(), "Invalid Number of Shares", Toast.LENGTH_SHORT).show(); return; } EditText price = (EditText) dialog.findViewById(R.id.selling_price); try { purchase.setPrice(Double.parseDouble(price.getText().toString())); } catch (Exception e) { Toast.makeText(getActivity(), "Invalid Selling Price", Toast.LENGTH_SHORT).show(); return; } purchase.setType("sell"); databaseHandler.addPurchase(spinner.getSelectedItem().toString(), purchase); setRecyclerViewAdapter(); dialog.dismiss(); } }); } }); return root; } private DatePickerDialog.OnDateSetListener onDateSetListener = new DatePickerDialog.OnDateSetListener() { @Override public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { year_start = year; month_start = monthOfYear + 1; day_start = dayOfMonth; } }; private void setRecyclerViewAdapter() { sharesList = databaseHandler.getShares(); shareSalesAdapter = new ShareSalesAdapter(getContext(), sharesList); shareSalesAdapter.setOnItemClickListener(new ShareSalesAdapter.OnItemClickListener() { @Override public void onItemClick(View itemView, int position) { Share share = sharesList.get(position); startActivity(new Intent(getActivity(), ShareSalesDetailActivity.class).putExtra("name", share.getName())); } }); salesRecyclerView.setAdapter(shareSalesAdapter); salesRecyclerView.setLayoutManager(new LinearLayoutManager(getContext())); salesRecyclerView.setHasFixedSize(true); salesRecyclerView.setAdapter(shareSalesAdapter); salesRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); ItemTouchHelper.Callback callback = new SimpleItemTouchHelperCallback(shareSalesAdapter); mItemTouchHelper = new ItemTouchHelper(callback); mItemTouchHelper.attachToRecyclerView(salesRecyclerView); if (AndroidUtils.isNetworkConnected(getContext())) new CurrentShareValue().execute(); } private class CurrentShareValue extends AsyncTask<Void, Double, Void> { private String currentShareValue; private DatabaseHandler db; private List<Share> shares; @Override protected void onPreExecute() { try { actionProgressItem.setVisible(true); actionRefreshItem.setVisible(false); } catch (Exception e) { Log.e("CurrentShareValue Pre", e.toString()); } } @Override protected Void doInBackground(Void... params) { db = new DatabaseHandler(getContext()); shares = db.getShares(); try { for (int i = 0; i < shares.size(); i++) { Share share = shares.get(i); String code = StringUtils.getCode(share.getName()); String url = "https://in.finance.yahoo.com/q?s=" + code + ".NS"; Document document = Jsoup.connect(url).followRedirects(true).get(); try { currentShareValue = document.getElementById("yfs_l84_" + code.toLowerCase() + ".ns").html(); Realm realm = db.getRealmInstance(); realm.beginTransaction(); share.setCurrentShareValue(Double.parseDouble(currentShareValue)); realm.copyToRealmOrUpdate(share); realm.commitTransaction(); } catch (Exception e) { Log.e("CurrentShareValue do1", e.toString()); } } } catch (Exception e) { Log.e("CurrentShareValue do2", e.toString()); } return null; } @Override protected void onPostExecute(Void aVoid) { try { shareSalesAdapter.notifyDataSetChanged(); actionProgressItem.setVisible(false); actionRefreshItem.setVisible(true); } catch (Exception e) { Log.e("CurrentShareValue Post", e.toString()); } } } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.share_sales, menu); actionProgressItem = menu.findItem(R.id.action_progress); actionRefreshItem = menu.findItem(R.id.action_refresh); actionProgressItem.setVisible(true); actionRefreshItem.setVisible(false); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == R.id.action_refresh) { if (AndroidUtils.isNetworkConnected(getContext())) new CurrentShareValue().execute(); } return super.onOptionsItemSelected(item); } @Override public void onStartDrag(RecyclerView.ViewHolder viewHolder) { mItemTouchHelper.startDrag(viewHolder); } @Override public void setUserVisibleHint(boolean isVisibleToUser) { super.setUserVisibleHint(isVisibleToUser); try { if (isVisibleToUser) setRecyclerViewAdapter(); } catch (Exception e) { Log.e("visibleToUser", e.toString()); } } @Override public void onResume() { super.onResume(); try { setRecyclerViewAdapter(); } catch (Exception e) { Log.e("onResume", e.toString()); } } }