de.schildbach.wallet.litecoin.ui.WalletAddressFragment.java Source code

Introduction

Here is the source code for de.schildbach.wallet.litecoin.ui.WalletAddressFragment.java

Source

/*
 * Copyright 2011-2013 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/>.
 */

package de.schildbach.wallet.litecoin.ui;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.google.litecoin.core.Address;
import com.google.litecoin.uri.LitecoinURI;

import de.schildbach.wallet.litecoin.Constants;
import de.schildbach.wallet.litecoin.WalletApplication;
import de.schildbach.wallet.litecoin.util.BitmapFragment;
import de.schildbach.wallet.litecoin.util.NfcTools;
import de.schildbach.wallet.litecoin.util.WalletUtils;
import de.schildbach.wallet.litecoin.R;

/**
 * @author Andreas Schildbach
 */
public final class WalletAddressFragment extends Fragment {
    private FragmentActivity activity;
    private WalletApplication application;
    private SharedPreferences prefs;
    private Object nfcManager;

    private View litecoinAddressButton;
    private TextView litecoinAddressLabel;
    private ImageView litecoinAddressQrView;

    private Address lastSelectedAddress;

    private Bitmap qrCodeBitmap;

    @Override
    public void onAttach(final Activity activity) {
        super.onAttach(activity);

        this.activity = (FragmentActivity) activity;
        prefs = PreferenceManager.getDefaultSharedPreferences(activity);
        application = (WalletApplication) activity.getApplication();
    }

    @SuppressLint("InlinedApi")
    @Override
    public View onCreateView(final LayoutInflater inflater, final ViewGroup container,
            final Bundle savedInstanceState) {
        nfcManager = activity.getSystemService(Context.NFC_SERVICE);

        final View view = inflater.inflate(R.layout.wallet_address_fragment, container, false);
        litecoinAddressButton = view.findViewById(R.id.litecoin_address_button);
        litecoinAddressLabel = (TextView) view.findViewById(R.id.litecoin_address_label);
        litecoinAddressQrView = (ImageView) view.findViewById(R.id.litecoin_address_qr);

        litecoinAddressButton.setOnClickListener(new OnClickListener() {
            public void onClick(final View v) {
                AddressBookActivity.start(activity, false);
            }
        });

        litecoinAddressQrView.setOnClickListener(new OnClickListener() {
            public void onClick(final View v) {
                handleShowQRCode();
            }
        });

        litecoinAddressQrView.setOnLongClickListener(new OnLongClickListener() {
            public boolean onLongClick(final View v) {
                startActivity(new Intent(activity, RequestCoinsActivity.class));
                return true;
            }
        });

        return view;
    }

    @Override
    public void onResume() {
        super.onResume();

        prefs.registerOnSharedPreferenceChangeListener(prefsListener);

        updateView();
    }

    @Override
    public void onPause() {
        prefs.unregisterOnSharedPreferenceChangeListener(prefsListener);

        if (nfcManager != null)
            NfcTools.unpublish(nfcManager, getActivity());

        super.onPause();
    }

    private void updateView() {
        final Address selectedAddress = application.determineSelectedAddress();

        if (!selectedAddress.equals(lastSelectedAddress)) {
            lastSelectedAddress = selectedAddress;

            litecoinAddressLabel.setText(WalletUtils.formatAddress(selectedAddress,
                    Constants.ADDRESS_FORMAT_GROUP_SIZE, Constants.ADDRESS_FORMAT_LINE_SIZE));

            final String addressStr = LitecoinURI.convertToLitecoinURI(selectedAddress, null, null, null);

            final int size = (int) (256 * getResources().getDisplayMetrics().density);
            qrCodeBitmap = WalletUtils.getQRCodeBitmap(addressStr, size);
            litecoinAddressQrView.setImageBitmap(qrCodeBitmap);

            if (nfcManager != null)
                NfcTools.publishUri(nfcManager, getActivity(), addressStr);
        }
    }

    private void handleShowQRCode() {
        BitmapFragment.show(getFragmentManager(), qrCodeBitmap);
    }

    private final OnSharedPreferenceChangeListener prefsListener = new OnSharedPreferenceChangeListener() {
        public void onSharedPreferenceChanged(final SharedPreferences sharedPreferences, final String key) {
            if (Constants.PREFS_KEY_SELECTED_ADDRESS.equals(key))
                updateView();
        }
    };
}