net.olejon.mdapp.SubstancesFragment.java Source code

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Here is the source code for net.olejon.mdapp.SubstancesFragment.java

Source

package net.olejon.mdapp;

/*
    
Copyright 2015 Ole Jon Bjrkum
    
This file is part of LegeAppen.
    
LegeAppen 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.
    
LegeAppen 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 LegeAppen.  If not, see <http://www.gnu.org/licenses/>.
    
*/

import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.FilterQueryProvider;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

public class SubstancesFragment extends Fragment {
    private Context mContext;

    private MyTools mTools;

    private Cursor mCursor;

    private EditText mSearchEditText;
    private ListView mListView;
    private View mListViewEmpty;

    // Create fragment view
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        ViewGroup viewGroup = (ViewGroup) inflater.inflate(R.layout.fragment_substances, container, false);

        // Context
        mContext = viewGroup.getContext();

        // Tools
        mTools = new MyTools(mContext);

        // Search
        mSearchEditText = (EditText) getActivity().findViewById(R.id.main_search_edittext);

        // List
        mListView = (ListView) viewGroup.findViewById(R.id.main_substances_list);
        mListViewEmpty = viewGroup.findViewById(R.id.main_substances_list_empty);

        // Get substances
        GetSubstancesTask getSubstancesTask = new GetSubstancesTask();
        getSubstancesTask.execute();

        return viewGroup;
    }

    // Destroy fragment
    @Override
    public void onDestroy() {
        super.onDestroy();

        if (mCursor != null && !mCursor.isClosed())
            mCursor.close();
    }

    // Get substances
    private class GetSubstancesTask extends AsyncTask<Void, Void, SimpleCursorAdapter> {
        @Override
        protected void onPostExecute(final SimpleCursorAdapter simpleCursorAdapter) {
            mListView.setAdapter(simpleCursorAdapter);
            mListView.setEmptyView(mListViewEmpty);

            mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> adapterView, View view, int i, long id) {
                    Intent intent = new Intent(mContext, SubstanceActivity.class);
                    intent.putExtra("id", id);
                    startActivity(intent);
                }
            });

            mSearchEditText.addTextChangedListener(new TextWatcher() {
                @Override
                public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
                    if (MainActivity.VIEW_PAGER_POSITION == 1)
                        simpleCursorAdapter.getFilter().filter(charSequence);
                }

                @Override
                public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
                }

                @Override
                public void afterTextChanged(Editable editable) {
                }
            });

            simpleCursorAdapter.setFilterQueryProvider(new FilterQueryProvider() {
                @Override
                public Cursor runQuery(CharSequence charSequence) {
                    if (charSequence.length() == 0)
                        return MainActivity.SQLITE_DATABASE.query(SlDataSQLiteHelper.TABLE_SUBSTANCES, null, null,
                                null, null, null, SlDataSQLiteHelper.SUBSTANCES_COLUMN_NAME);

                    String query = charSequence.toString().trim();

                    return MainActivity.SQLITE_DATABASE.query(SlDataSQLiteHelper.TABLE_SUBSTANCES, null,
                            SlDataSQLiteHelper.SUBSTANCES_COLUMN_NAME + " LIKE " + mTools.sqe("%" + query + "%"),
                            null, null, null, SlDataSQLiteHelper.SUBSTANCES_COLUMN_NAME);
                }
            });
        }

        @Override
        protected SimpleCursorAdapter doInBackground(Void... voids) {
            mCursor = MainActivity.SQLITE_DATABASE.query(SlDataSQLiteHelper.TABLE_SUBSTANCES, null, null, null,
                    null, null, SlDataSQLiteHelper.SUBSTANCES_COLUMN_NAME);

            String[] fromColumns = { SlDataSQLiteHelper.SUBSTANCES_COLUMN_NAME,
                    SlDataSQLiteHelper.SUBSTANCES_COLUMN_ATC_CODE };
            int[] toViews = { R.id.main_substances_list_item_name, R.id.main_substances_list_item_atc_code };

            return new SimpleCursorAdapter(mContext, R.layout.fragment_substances_list_item, mCursor, fromColumns,
                    toViews, 0);
        }
    }
}