com.tinbytes.simplesearchapp.SimpleListViewActivity.java Source code

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Here is the source code for com.tinbytes.simplesearchapp.SimpleListViewActivity.java

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/*
 * Copyright 2015 Tinbytes Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.tinbytes.simplesearchapp;

import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.view.MenuItemCompat;
import android.support.v4.widget.SimpleCursorAdapter;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.Toast;

public class SimpleListViewActivity extends AppCompatActivity
        implements LoaderManager.LoaderCallbacks<Cursor>, SearchView.OnQueryTextListener {
    private static final int ANIMAL_LOADER = 1;

    private ListView lvAnimals;
    private SimpleCursorAdapter scaAnimals;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_simple_list_view);
        lvAnimals = (ListView) findViewById(R.id.list);
        scaAnimals = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_2, null,
                new String[] { DatabaseContract.AnimalColumns.NAME, DatabaseContract.AnimalColumns.CATEGORY },
                new int[] { android.R.id.text1, android.R.id.text2 }, 0);
        lvAnimals.setAdapter(scaAnimals);
        lvAnimals.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                // ListView Clicked item index
                Cursor c = (Cursor) lvAnimals.getItemAtPosition(position);
                // Show Alert
                Toast.makeText(getApplicationContext(),
                        "Position " + position + " - Animal "
                                + c.getString(c.getColumnIndex(DatabaseContract.AnimalColumns.NAME)),
                        Toast.LENGTH_LONG).show();
            }
        });

        getSupportLoaderManager().initLoader(ANIMAL_LOADER, null, this);

        handleIntent(getIntent());
    }

    @Override
    protected void onNewIntent(Intent newIntent) {
        handleIntent(newIntent);
    }

    private void handleIntent(Intent intent) {
        String query;
        String intentAction = intent.getAction();
        if (Intent.ACTION_SEARCH.equals(intentAction)) {
            query = intent.getStringExtra(SearchManager.QUERY);
            Bundle b = new Bundle();
            b.putString("query", query);
            getSupportLoaderManager().restartLoader(ANIMAL_LOADER, b, this);
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_simple_list_view, menu);
        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
        SearchView searchView = (SearchView) MenuItemCompat.getActionView(menu.findItem(R.id.action_search_animal));
        if (searchView != null) {
            searchView.setOnQueryTextListener(this);
            searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
            searchView.setIconifiedByDefault(true);
        }
        return true;
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        switch (id) {
        case ANIMAL_LOADER:
            StringBuilder sb = new StringBuilder();
            if (args != null) {
                String query = args.getString("query");
                if (query != null && !query.trim().isEmpty()) {
                    sb.append(DatabaseContract.AnimalColumns.NAME).append(" LIKE '%").append(query).append("%'");
                }
            }
            return new CursorLoader(this, DatabaseContract.AnimalTable.CONTENT_URI, null, sb.toString(), null,
                    null);
        default:
            throw new IllegalArgumentException("Unknown loader ID = " + id);
        }
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        scaAnimals.changeCursor(data);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        scaAnimals.changeCursor(null);
    }

    @Override
    public boolean onQueryTextSubmit(String query) {
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        Bundle b = new Bundle();
        b.putString("query", newText);
        getSupportLoaderManager().restartLoader(ANIMAL_LOADER, b, this);
        return true;
    }
}