Android Open Source - android-sholi Data Overview Fragment

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License

The source code is released under:
GNU General Public License
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Java Source Code

/*
 * ShoLi, a simple tool to produce short lists.
 */*from www  .  ja va 2 s .c om*/
 * Copyright (C) 2013,2014  David Soulayrol
 *
 * ShoLi 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.
 *
 * ShoLi 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 name.soulayrol.rhaa.sholi;

import android.app.AlertDialog;
import android.app.Fragment;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

import de.greenrobot.dao.query.LazyList;
import name.soulayrol.rhaa.sholi.data.Operations;
import name.soulayrol.rhaa.sholi.data.model.DaoSession;
import name.soulayrol.rhaa.sholi.data.model.Item;


public class DataOverviewFragment extends Fragment {

    private DaoSession _session;

    TextView _summary;

    Button _exportButton;

    Button _eraseButton;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        _session = Operations.openSession(getActivity());
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_data_overview, container, false);

        _summary = (TextView) view.findViewById(R.id.data_overview_text);

        _exportButton = (Button) view.findViewById(R.id.data_export_button);
        _exportButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                StringBuilder builder = new StringBuilder();
                Intent intent = new Intent(Intent.ACTION_SEND);
                LazyList<Item> items = _session.getItemDao().queryBuilder().listLazy();
                Operations.serialize(items, builder);
                items.close();

                intent.setType("text/plain");
                intent.putExtra(Intent.EXTRA_SUBJECT, R.string.fragment_data_export_subject);
                intent.putExtra(Intent.EXTRA_TEXT, builder.toString());

                startActivity(Intent.createChooser(intent, null));
            }
        });

        _eraseButton = (Button) view.findViewById(R.id.data_erase_button);
        _eraseButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

                builder.setMessage(R.string.dialog_erase_all_message)
                        .setIcon(android.R.drawable.ic_dialog_alert)
                        .setTitle(R.string.dialog_erase_all_title)
                        .setPositiveButton(android.R.string.yes,
                                new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int id) {
                                        _session.deleteAll(Item.class);
                                        updateView();
                                    }
                                })
                        .setNegativeButton(android.R.string.no, null);

                builder.create().show();
            }
        });

        return view;
    }

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

    private void updateView() {
        long count = _session.getItemDao().count();
        _summary.setText(getResources().getQuantityString(
                R.plurals.fragment_data_overview_text, (int)count, count));
        _exportButton.setEnabled(count > 0);
        _eraseButton.setEnabled(count > 0);
    }
}
Java Source Code List
