Android Open Source - callmeter Name Loader

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2009-2013 Felix Bechstein
 * /*from w w  w .  java  2  s  .c om*/
 * This file is part of CallMeter 3G.
 * 
 * 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.ub0r.android.callmeter.data;

import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.AsyncTask;
import android.provider.ContactsContract.PhoneLookup;
import android.widget.TextView;

import de.ub0r.android.logg0r.Log;

/**
 * Load name from number in background.
 *
 * @author flx
 */
public class NameLoader extends AsyncTask<Void, Void, String> {

    /** TAG for Log. */
    private static final String TAG = "NameLoader";

    /** {@link Context}. */
    private final Context ctx;
    /** {@link TextView}. */
    private final TextView tv;
    /** Number. */
    private final String num;
    /** {@link String} format. */
    private final String f;

    /**
     * Get name for number synchronously.
     *
     * @param context {@link Context}
     * @param number  phone number
     * @param format  format to format the {@link String} with
     * @return name or formatted {@link String}
     */
    public static String getName(final Context context, final String number, final String format) {
        NameLoader loader = new NameLoader(context, number, format, null);
        String result = loader.doInBackground((Void) null);
        loader.onPostExecute(result);
        if (result == null) {
            return null;
        } else if (format == null) {
            NameCache.getInstance().put(number, result);
            return result;
        } else {
            NameCache.getInstance().put(number, result);
            return String.format(format, result);
        }
    }

    /**
     * Default constructor.
     *
     * @param context {@link Context}
     * @param number  phone number
     * @param format  format to format the {@link String} with
     * @param view    {@link TextView} to set the result on
     */
    public NameLoader(final Context context, final String number, final String format,
            final TextView view) {
        ctx = context;
        num = number;
        f = format;
        tv = view;
    }

    @Override
    protected String doInBackground(final Void... params) {
        String ret = null;
        try {
            //noinspection ConstantConditions
            Cursor c = ctx.getContentResolver().query(
                    Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, num),
                    new String[]{PhoneLookup.DISPLAY_NAME}, null, null, null);
            if (c != null) {
                if (c.moveToFirst()) {
                    ret = c.getString(0);
                }
                c.close();
            }
        } catch (Exception e) {
            Log.e(TAG, "error loading name", e);
        }
        return ret;
    }

    @Override
    protected void onPostExecute(final String result) {
        if (result != null) {
            NameCache.getInstance().put(num, result);
            if (tv != null && !this.isCancelled()) {
                String s = result;
                if (f != null) {
                    s = String.format(f, s);
                }
                tv.setText(s);
            }
        }
    }
}

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