Android Open Source - callmeter Date Preference

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2009-2013 Felix Bechstein
 * /*  www .  ja va  2  s .c  om*/
 * This file is part of Call Meter 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 android.preference;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.DatePicker;

import java.util.Calendar;

import de.ub0r.android.lib.Utils;

/**
 * A {@link Preference} to choose a date.
 */
public final class DatePreference extends DialogPreference implements
        DatePicker.OnDateChangedListener {

    /** Global default value. */
    public static final long DEFAULT_VALUE = 1262300400001L; // 1.1.2010
    /** Default value. */
    private long defValue = DEFAULT_VALUE;

    /**
     * Default constructor.
     *
     * @param context {@link Context}
     * @param attrs   {@link AttributeSet}
     */
    public DatePreference(final Context context, final AttributeSet attrs) {
        super(context, attrs);
        this.setPersistent(true);
    }

    /**
     * Default constructor.
     *
     * @param context  {@link Context}
     * @param attrs    {@link AttributeSet}
     * @param defStyle default style
     */
    public DatePreference(final Context context, final AttributeSet attrs, final int defStyle) {
        super(context, attrs, defStyle);
        this.setPersistent(true);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected View onCreateDialogView() {
        final Calendar c = this.getPersitendCalendar(this.defValue);
        final DatePicker dp = new DatePicker(this.getContext());
        dp.init(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH), this);
        return dp;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void setDefaultValue(final Object defaultValue) {
        super.setDefaultValue(defaultValue);
        if (defaultValue instanceof String) {
            this.defValue = Utils.parseLong((String) defaultValue, this.defValue);
        } else if (defaultValue instanceof Long) {
            this.defValue = (Long) defaultValue;
        }
    }

    /**
     * Get a {@link Calendar} set to the value of this {@link Preference}.
     *
     * @param defaultValue default date
     * @return {@link Calendar}
     */
    private Calendar getPersitendCalendar(final long defaultValue) {
        final long date = this.getPersistedLong(defaultValue);
        final Calendar c = Calendar.getInstance();
        c.setTimeInMillis(date);
        return c;
    }

    /**
     * {@inheritDoc}
     */
    public void onDateChanged(final DatePicker view, final int year, final int monthOfYear,
            final int dayOfMonth) {
        Calendar c = Calendar.getInstance();
        c.set(year, monthOfYear, dayOfMonth);
        this.persistLong(c.getTimeInMillis());
    }
}

Java Source Code List

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