Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.nio.charset.Charset;
import java.util.Locale;
import android.nfc.NdefRecord;

public class Main {

    public static NdefRecord createTextRecord(String text, Locale locale) {
        return createTextRecord(text, locale, true);
    }

    public static NdefRecord createTextRecord(String text, Locale locale, boolean encodeInUtf8) {
        if (text == null) {
            throw new NullPointerException("text is MUST require!!");
        }
        if (locale == null) {
            throw new NullPointerException("locale is MUST require!!");
        }

        byte[] langBytes = locale.getLanguage().getBytes(Charset.forName("US-ASCII"));

        Charset utfEncoding = encodeInUtf8 ? Charset.forName("UTF-8") : Charset.forName("UTF-16");
        text = convertToCrlf(text);
        byte[] textBytes = text.getBytes(utfEncoding);

        int utfBit = encodeInUtf8 ? 0 : (1 << 7);
        char status = (char) (utfBit + langBytes.length);

        byte[] data = bytesConcat(new byte[] { (byte) status }, langBytes, textBytes);

        return new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_TEXT, new byte[0], data);
    }

    /**
     * Convert to CRLF
     * @param text
     * @return
     */
    private static String convertToCrlf(String text) {
        String repCrlf = text.replaceAll("\r\n", "\n");
        String repLf = repCrlf.replaceAll("\r", "\n");
        String rep = repLf.replaceAll("\n", "\r\n");
        return rep;
    }

    /**
     * 
     * http://stackoverflow.com/questions/5513152/easy-way-to-concatenate-two-byte-arrays
     * @param bytes
     */
    public static byte[] bytesConcat(byte[]... bytes) {
        if (bytes == null || bytes.length <= 0) {
            return new byte[0];
        }

        byte[] base = new byte[0];
        for (byte[] b : bytes) {
            byte[] c = new byte[base.length + b.length];
            System.arraycopy(base, 0, c, 0, base.length);
            System.arraycopy(b, 0, c, base.length, b.length);

            base = c;
        }

        return base;
    }
}