Android ID Generate getAndroidId(Context context)

Description

get Android Id

License

Open Source License

Declaration

public static String getAndroidId(Context context) 

Method Source Code

//package com.java2s;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import android.content.Context;

import android.util.Log;

public class Main {
    private static final String HEX_DIGITS = "0123456789abcdef";
    private static final String LOGTAG = "Plus1Helper";

    public static String getAndroidId(Context context) {
        String androidId = android.provider.Settings.Secure.getString(
                context.getContentResolver(),
                android.provider.Settings.Secure.ANDROID_ID);

        if (androidId != null)
            return getHash(androidId);

        return null;
    }/* w  ww  .  jav  a  2  s.  c o  m*/

    public static String getHash(String text) {
        try {
            return SHA1(text);
        } catch (NoSuchAlgorithmException e) {
            Log.e(LOGTAG, "NoSuchAlgorithmException: " + e.toString(), e);

            return null; // FIXME: add other hash logic
        }
    }

    private static String SHA1(String text) throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("SHA-1");

        byte[] sha1hash = new byte[40];
        md.update(text.getBytes());
        sha1hash = md.digest();

        return convertToHex(sha1hash);
    }

    private static String convertToHex(byte[] raw) {
        final StringBuilder hex = new StringBuilder(raw.length * 2);

        for (final byte b : raw) {
            hex.append(HEX_DIGITS.charAt((b & 0xF0) >> 4)).append(
                    HEX_DIGITS.charAt((b & 0x0F)));
        }

        return hex.toString();
    }
}

Related

1. generateSyncEventId()
2. getSequenceId()
3. generateId(Object... value)
4. generateId(Object... value)
5. generateRecordingIdentifier()
6. generateKey()
7. generateRandomUIID()