StringUtil.java
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package com.metroapp.forum;
import android.text.TextUtils;
import java.util.Locale;
import java.util.UUID;
public class StringUtil {
public static String getPercentString(float percent) {
return String.format(Locale.US, "%d%%", (int) (percent * 100));
}
/**
* 删除字符串中的空白符
*
* @param content
* @return String
*/
public static String removeBlanks(String content) {
if (content == null) {
return null;
}
StringBuilder buff = new StringBuilder();
buff.append(content);
for (int i = buff.length() - 1; i >= 0; i--) {
if (' ' == buff.charAt(i) || ('\n' == buff.charAt(i)) || ('\t' == buff.charAt(i))
|| ('\r' == buff.charAt(i))) {
buff.deleteCharAt(i);
}
}
return buff.toString();
}
/**
* 获取32位uuid
*
* @return
*/
public static String get32UUID() {
return UUID.randomUUID().toString().replaceAll("-", "");
}
public static boolean isEmpty(String input) {
return TextUtils.isEmpty(input);
}
/**
* 生成唯一号
*
* @return
*/
public static String get36UUID() {
UUID uuid = UUID.randomUUID();
String uniqueId = uuid.toString();
return uniqueId;
}
public static final String filterUCS4(String str) {
if (TextUtils.isEmpty(str)) {
return str;
}
if (str.codePointCount(0, str.length()) == str.length()) {
return str;
}
StringBuilder sb = new StringBuilder();
int index = 0;
while (index < str.length()) {
int codePoint = str.codePointAt(index);
index += Character.charCount(codePoint);
if (Character.isSupplementaryCodePoint(codePoint)) {
continue;
}
sb.appendCodePoint(codePoint);
}
return sb.toString();
}
/**
* counter ASCII character as one, otherwise two
*
* @param str
* @return count
*/
public static int counterChars(String str) {
// return
if (TextUtils.isEmpty(str)) {
return 0;
}
int count = 0;
for (int i = 0; i < str.length(); i++) {
int tmp = (int) str.charAt(i);
if (tmp > 0 && tmp < 127) {
count += 1;
} else {
count += 2;
}
}
return count;
}
}