What's the best way to check if a String contains a URL in Java/Android?

Question

What\'s the best way to check if a String contains a URL in Java/Android? Would the best way be to check if the string contains |.com | .net | .org | .info | .everythingelse

Answer 1

The best way is to to set the property autolink to your textview, Android will recognize, change the appearance and make clickable a link anywhere inside the string.

android:autoLink="web"

Answer 2

This is simply done with a try catch around the constructor (this is necessary either way).

String inputUrl = getInput();
if (!inputUrl.contains("http://"))
    inputUrl = "http://" + inputUrl;

URL url;
try {
    url = new URL(inputUrl);
} catch (MalformedURLException e) {
    Log.v("myApp", "bad url entered");
}
if (url == null)
    userEnteredBadUrl();
else
    continue();

Answer 3

Best way would be to use regular expression, something like below:

public static final String URL_REGEX = "^((https?|ftp)://|(www|ftp)\\.)?[a-z0-9-]+(\\.[a-z0-9-]+)+([/?].*)?$";

Pattern p = Pattern.compile(URL_REGEX);
Matcher m = p.matcher("example.com");//replace with string to compare
if(m.find()) {
    System.out.println("String contains URL");
}

Answer 4

This function is working for me

private boolean containsURL(String content){
    String REGEX = "\\b(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
    Pattern p = Pattern.compile(REGEX,Pattern.CASE_INSENSITIVE);
    Matcher m = p.matcher(content);
    if(m.find()) {
        return true;
    }

    return false;
}

Call this function

boolean isContain = containsURL("Pass your string here...");
Log.d("Result", String.valueOf(isContain));

NOTE :- I have tested string containing single url