Android Utililty Methods String Contain

List of utility methods to do String Contain

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Description

The list of methods to do String Contain are organized into topic(s).

Method

booleancontainsCharRef(String s)
Determines if a string contains what looks like an html character reference. 
return characterReferencePattern.matcher(s).find();
booleancontainsIgnoreCase(String str, String query)
same as String.contains, but ignores case. 
if (str != null && query != null) {
    int limit = str.length() - query.length() + 1;
    for (int i = 0; i < limit; i++) {
        if (matchesIgnoreCase(str, query, i)) {
            return true;
return false;
booleancontains(String[] components, String value)
contains 
if (components == null || value == null) {
    return false;
for (String str : components) {
    if (str.equals(value)) {
        return true;
return false;
booleancontainChinese(String s)
contain Chinese 
if (null == s) {
    return false;
Pattern pattern = Pattern.compile(".*[\u4e00-\u9fbb]+.*");
Matcher matcher = pattern.matcher(s);
return matcher.matches();
booleancontains(final String str, final char ch)
contains 
if (isEmpty(str)) {
    return false;
return str.indexOf(ch) >= 0;
booleancontains(final String s1, final String s2)
contains 
if (isEmpty(s1)) {
    return false;
return s1.indexOf(s2) >= 0;
booleancontains(String target, String content)
contains 
if (target.indexOf(content) != -1) {
    return true;
return false;