Java tutorial
/* * Copyright (C) 2017 IOTA Foundation * * Authors: pinpong, adrianziser, saschan * * 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 org.iota.wallet.ui.adapter; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.content.ContextCompat; import android.support.v4.view.ViewPager; import android.support.v7.widget.RecyclerView; import android.util.SparseBooleanArray; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageButton; import android.widget.TextView; import com.github.aakira.expandablelayout.ExpandableLayoutListenerAdapter; import com.github.aakira.expandablelayout.ExpandableRelativeLayout; import com.simplecityapps.recyclerview_fastscroll.views.FastScrollRecyclerView; import org.apache.commons.lang3.math.NumberUtils; import org.greenrobot.eventbus.EventBus; import org.iota.wallet.R; import org.iota.wallet.helper.Constants; import org.iota.wallet.helper.Utils; import org.iota.wallet.helper.price.AlternateValueManager; import org.iota.wallet.helper.price.AlternateValueUtils; import org.iota.wallet.helper.price.ExchangeRateNotAvailableException; import org.iota.wallet.model.Transaction; import org.knowm.xchange.currency.Currency; import java.util.ArrayList; import java.util.ConcurrentModificationException; import java.util.List; import butterknife.BindView; import butterknife.ButterKnife; import jota.utils.IotaUnitConverter; public class TangleExplorerTransactionsCardAdapter extends RecyclerView.Adapter<TangleExplorerTransactionsCardAdapter.ViewHolder> implements FastScrollRecyclerView.SectionedAdapter { private final Context context; private final SparseBooleanArray expandState = new SparseBooleanArray(); private List<Transaction> transactions; public TangleExplorerTransactionsCardAdapter(Context context, List<Transaction> listItems) { this.context = context; this.transactions = listItems; for (int i = 0; i < listItems.size(); i++) { expandState.append(i, false); } } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_tangle_explorer_transactions, parent, false); return new ViewHolder(v); } @NonNull @Override public String getSectionName(int position) { return String.valueOf(position + 1); } @Override public void onBindViewHolder(final ViewHolder holder, int position) { int adapterPosition = holder.getAdapterPosition(); Transaction transaction = getItem(adapterPosition - 1); holder.setIsRecyclable(true); holder.hashLabel.setText(transaction.getHash()); holder.addressLabel.setText(transaction.getAddress()); holder.valueLabel .setText(IotaUnitConverter.convertRawIotaAmountToDisplayText(transaction.getValue(), false)); try { Currency currency = Utils.getConfiguredAlternateCurrency(context); String text = AlternateValueUtils.formatAlternateBalanceText( new AlternateValueManager(context).convert(transaction.getValue(), currency), currency); holder.alternativeValueLabel.setText(text); } catch (ExchangeRateNotAvailableException e) { holder.alternativeValueLabel.setText(R.string.na); } if (transaction.getValue() < 0) { holder.valueLabel.setTextColor(ContextCompat.getColor(context, R.color.flatRed)); } else if (transaction.getValue() > 0) { holder.valueLabel.setTextColor(ContextCompat.getColor(context, R.color.flatGreen)); } holder.tagLabel.setText(transaction.getTag()); holder.timestampLabel.setText(Utils.timeStampToDate(transaction.getTimestamp())); holder.bundleLabel.setText(transaction.getBundle()); if (transaction.getPersistence() == null) { holder.persistenceLabel.setVisibility(View.GONE); } else { holder.persistenceLabel.setVisibility(View.VISIBLE); holder.persistenceLabel.setText(context.getResources() .getString(transaction.getPersistence() ? R.string.card_label_persistence_yes : R.string.card_label_persistence_no)); } holder.expandableLayout.setExpanded(expandState.get(adapterPosition)); holder.expandableLayout.invalidate(); } private Transaction getItem(int position) { return transactions.get(position + 1); } @Override public int getItemCount() { return transactions.size(); } public void setAdapterList(List<Transaction> coolTransactions) { this.transactions = coolTransactions; notifyDataSetChanged(); } public void filter(final List<Transaction> coolTransactions, String searchText) { final String sText = searchText.toLowerCase(); final List<Transaction> filteredCoolTransactionList = new ArrayList<>(); new Thread(() -> { try { for (Transaction coolTransaction : coolTransactions) { List<String> list = new ArrayList<>(); list.add(coolTransaction.getAddress().toLowerCase()); list.add(coolTransaction.getBundle().toLowerCase()); list.add(coolTransaction.getHash().toLowerCase()); list.add(String.valueOf(coolTransaction.getValue()).toLowerCase()); list.add(coolTransaction.getTag().toLowerCase()); for (String str : list) { if (str.trim().contains(sText)) { filteredCoolTransactionList.add(coolTransaction); break; } } } ((Activity) context).runOnUiThread(() -> setAdapterList(filteredCoolTransactionList)); } catch (ConcurrentModificationException e) { e.printStackTrace(); } }).start(); } class ViewHolder extends RecyclerView.ViewHolder { @BindView(R.id.item_et_hash) TextView hashLabel; @BindView(R.id.item_et_address) TextView addressLabel; @BindView(R.id.item_et_value) TextView valueLabel; @BindView(R.id.item_et_alternate_value) TextView alternativeValueLabel; @BindView(R.id.item_et_tag) TextView tagLabel; @BindView(R.id.item_et_timestamp) TextView timestampLabel; @BindView(R.id.item_et_bundle) TextView bundleLabel; @BindView(R.id.item_et_persistence) TextView persistenceLabel; @BindView(R.id.item_et_expand_button) ImageButton expandButton; @BindView(R.id.item_et_expand_layout) ExpandableRelativeLayout expandableLayout; private ViewHolder(View itemView) { super(itemView); ButterKnife.bind(this, itemView); itemView.setOnClickListener(v -> { ViewPager viewPager = ((Activity) context).findViewById(R.id.tangle_explorer_tab_viewpager); viewPager.setCurrentItem(1); Bundle bundle = new Bundle(); bundle.putString(Constants.TANGLE_EXPLORER_SEARCH_ITEM, hashLabel.getText().toString()); EventBus.getDefault().post(bundle); }); expandableLayout.collapse(); expandButton.setOnClickListener(view -> expandableLayout.toggle()); expandableLayout.setListener(new ExpandableLayoutListenerAdapter() { @Override public void onPreOpen() { expandButton.setImageResource(R.drawable.ic_expand_less); expandState.put(getAdapterPosition(), true); } @Override public void onPreClose() { expandButton.setImageResource(R.drawable.ic_expand_more); expandState.put(getAdapterPosition(), false); } }); } } }