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75 lines
1.9 KiB
Java
75 lines
1.9 KiB
Java
/*
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* Copyright (C) 2011 Whisper Systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.thoughtcrime.redphone.util;
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import android.app.AlertDialog;
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import android.content.Context;
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import android.text.Editable;
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import java.io.UnsupportedEncodingException;
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import java.security.NoSuchAlgorithmException;
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import java.security.SecureRandom;
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/**
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* Random utility functions.
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*
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* @author Moxie Marlinspike
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*
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*/
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public class Util {
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public static void sleep(long millis) {
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try {
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Thread.sleep(millis);
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} catch (InterruptedException ie) {
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throw new AssertionError(ie);
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}
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}
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public static byte[] getBytes(String fromString) {
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try {
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return fromString.getBytes("UTF8");
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} catch (UnsupportedEncodingException e) {
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throw new AssertionError(e);
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}
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}
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public static String getString(byte[] fromBytes) {
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try {
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return new String(fromBytes, "UTF8");
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} catch (UnsupportedEncodingException e) {
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throw new AssertionError(e);
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}
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}
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public static boolean isEmpty(String value) {
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return (value == null || value.trim().length() == 0);
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}
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public static boolean isEmpty(CharSequence value) {
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return value == null || isEmpty(value.toString());
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}
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public static boolean isEmpty(Editable value) {
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return value == null || isEmpty(value.toString());
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}
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}
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