Android String Cut cutString(String str, int length)

Description

cut String

License

Apache License

Declaration

public static String cutString(String str, int length) 

Method Source Code

//package com.java2s;
/****************************************************************************
 *            Copyright (C) 2014 www.apkdv.com
 *    Author: LengYue  ProjectName: DvTools
 *
 * 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.//from ww  w  . jav  a2s . c o m
 *****************************************************************************/

public class Main {

    public static String cutString(String str, int length) {
        return cutString(str, length, "");
    }

    public static String cutString(String str, int length, String dot) {
        int strBLen = strlen(str, "GBK");

        if (strBLen <= length) {
            return str;
        }

        int temp = 0;
        StringBuffer sb = new StringBuffer(length);
        char[] ch = str.toCharArray();

        for (char c : ch) {
            sb.append(c);

            if (c > 256) {
                temp += 2;
            } else {
                temp += 1;
            }

            if (temp >= length) {
                if (dot != null) {
                    sb.append(dot);
                }

                break;
            }
        }

        return sb.toString();
    }

    public static int strlen(String str, String charset) {
        if ((str == null) || (str.length() == 0)) {
            return 0;
        }

        int length = 0;

        try {
            length = str.getBytes(charset).length;
        } catch (Exception e) {
            e.printStackTrace();
        }

        return length;
    }
}

Related

1. cutString(String str, int length)
2. cutString(String str, int length, String dot)
3. cutStringFromChar(String str1, String str2, int offset)
4. cutRight(final String srcStr, final String cutStr)
5. cutoff(String value, int length)
6. cutString(String str, int length, String dot)
7. cutStringFromChar(String str1, String str2, int offset)