Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
// Released under the Apache License, Version 2.0

import android.app.Activity;

import android.nfc.NdefMessage;
import android.nfc.NdefRecord;
import android.nfc.NfcAdapter;

import java.nio.charset.Charset;
import java.util.Locale;

public class Main {
    public static void enableNFCWriteMode(Activity activity, NfcAdapter nfcAdapter, String textToWrite) {
        NdefRecord textRecord = createTextRecord(textToWrite, true);
        NdefMessage msg = new NdefMessage(new NdefRecord[] { textRecord });
        nfcAdapter.enableForegroundNdefPush(activity, msg);
    }

    public static NdefRecord createTextRecord(String payload, boolean encodeInUtf8) {
        byte[] langBytes = Locale.getDefault().getLanguage().getBytes(Charset.forName("US-ASCII"));
        Charset utfEncoding = encodeInUtf8 ? Charset.forName("UTF-8") : Charset.forName("UTF-16");
        byte[] textBytes = payload.getBytes(utfEncoding);
        int utfBit = encodeInUtf8 ? 0 : (1 << 7);
        char status = (char) (utfBit + langBytes.length);
        byte[] data = new byte[1 + langBytes.length + textBytes.length];
        data[0] = (byte) status;
        System.arraycopy(langBytes, 0, data, 1, langBytes.length);
        System.arraycopy(textBytes, 0, data, 1 + langBytes.length, textBytes.length);
        NdefRecord record = new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_TEXT, new byte[0], data);
        return record;
    }
}