Android CharSequence Convert convertValueToUnsignedInt(String value, int defaultValue)

Description

convert Value To Unsigned Int

License

Apache License

Declaration

public static final int convertValueToUnsignedInt(String value,
            int defaultValue) 

Method Source Code

//package com.java2s;
/*/*from  w w w.j  a  va2  s.  c  om*/
 * Copyright (C) 2006 The Android Open Source Project
 *
 * 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.
 */

public class Main {
    public static final int convertValueToUnsignedInt(String value,
            int defaultValue) {
        if (null == value)
            return defaultValue;

        return parseUnsignedIntAttribute(value);
    }

    public static final int parseUnsignedIntAttribute(CharSequence charSeq) {
        String value = charSeq.toString();

        int index = 0;
        int len = value.length();
        int base = 10;

        if ('0' == value.charAt(index)) {
            //  Quick check for zero by itself
            if (index == (len - 1))
                return 0;

            char c = value.charAt(index + 1);

            if ('x' == c || 'X' == c) { //  check for hex
                index += 2;
                base = 16;
            } else { //  check for octal
                index++;
                base = 8;
            }
        } else if ('#' == value.charAt(index)) {
            index++;
            base = 16;
        }

        return (int) Long.parseLong(value.substring(index), base);
    }
}

Related

1. convertValueToInt(CharSequence charSeq, int defaultValue)
2. convertValueToInt(CharSequence charSeq, int defaultValue)
3. convertValueToList(CharSequence value, String[] options, int defaultValue)
4. convertValueToList(CharSequence value, String[] options, int defaultValue)
5. convertValueToList(CharSequence value, String[] options, int defaultValue)
6. convertValueToUnsignedInt(String value, int defaultValue)
7. convertValueToUnsignedInt(String value, int defaultValue)
8. convertValueToUnsignedInt(String value, int defaultValue)