How to detect if String is HTML or not in Android?

This is helper class with regular expression built in to detect if some string have HTML body or not.

Java

public final class HTMLHelper { public static final String TAG_START = "<\\w+((\\s+\\w+(\\s*=\\s*(?:\".*?\"|'.*?'|[^'\">\\s]+))?)+\\s*|\\s*)>"; public static final String TAG_END = "</\\w+>"; public static final String TAG_SELF_CLOSING = "<\\w+((\\s+\\w+(\\s*=\\s*(?:\".*?\"|'.*?'|[^'\">\\s]+))?)+\\s*|\\s*)/>"; public static final String HTML_ENTITY = "&[a-zA-Z][a-zA-Z0-9]+;"; public static final Pattern htmlPattern = Pattern .compile("(" + TAG_START + ".*" + TAG_END + ")|(" + TAG_SELF_CLOSING + ")|(" + HTML_ENTITY + ")", Pattern.DOTALL); private HTMLHelper() { } public static boolean isHtml(String htmlString) { boolean isHTML = false; if (htmlString != null) { isHTML = htmlPattern.matcher(htmlString).find(); } return isHTML; } }

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public final class HTMLHelper {

public static final String TAG_START = "<\\w+((\\s+\\w+(\\s*=\\s*(?:\".*?\"|'.*?'|[^'\">\\s]+))?)+\\s*|\\s*)>";

public static final String TAG_END = "</\\w+>";

public static final String TAG_SELF_CLOSING = "<\\w+((\\s+\\w+(\\s*=\\s*(?:\".*?\"|'.*?'|[^'\">\\s]+))?)+\\s*|\\s*)/>";

public static final String HTML_ENTITY = "&[a-zA-Z][a-zA-Z0-9]+;";

public static final Pattern htmlPattern = Pattern

.compile("(" + TAG_START + ".*" + TAG_END + ")|(" + TAG_SELF_CLOSING + ")|(" + HTML_ENTITY + ")", Pattern.DOTALL);

private HTMLHelper() {

}

public static boolean isHtml(String htmlString) {

boolean isHTML = false;

if (htmlString != null) {

isHTML = htmlPattern.matcher(htmlString).find();

}

return isHTML;

}

}

#helperclass #string #code #html #example