PriceConverter.java

/* 
 * Copyright (C) 2007-2011 OpenIntents.org
 *
 * 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 org.openintents.shopping.library.util;

import android.text.TextUtils;

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;

public class PriceConverter {

    public static NumberFormat mPriceFormatter = DecimalFormat
            .getNumberInstance(Locale.ENGLISH);

    private static boolean initialized;

    public static void init() {
        PriceConverter.mPriceFormatter.setMaximumFractionDigits(2);
        PriceConverter.mPriceFormatter.setMinimumFractionDigits(2);
        initialized = true;
    }

    public static Long getCentPriceFromString(String price) {
        if (!initialized) {
            init();
        }
        Long priceLong;
        if (TextUtils.isEmpty(price)) {
            priceLong = 0L;
        } else {
            try {
                priceLong = Math
                        .round(100 * PriceConverter.mPriceFormatter
                                .parse(price).doubleValue());
            } catch (ParseException e) {
                priceLong = null;
            }
        }
        return priceLong;
    }

    public static String getStringFromCentPrice(long pricecent) {
        if (!initialized) {
            init();
        }
        String price = mPriceFormatter.format(pricecent * 0.01d);
        if (pricecent == 0) {
            // Empty field for easier editing
            // (Otherwise "0.00" has to be deleted manually first)
            price = "";
        }
        return price;
    }
}