Java/Android regex test if in a string is a link

Question

Pattern.compile("((http\\://|https\\://|ftp\\://|sftp\\://)|(www.))+((\\S+):(\\S+)@)?+(([a-zA-Z0-9\\.-]+\\.[a-zA-Z]{2,4})|([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}))(/[a-zA-Z0-9%:/-_\\?\\.'~]*)?");

I have this pattern, I'd like to test if there is a link in my string. I'd like to linkify those text in a TextView.

The code does not work when the link contains a & character.

full code:

Pattern httpMatcher = Pattern.compile("((http\\://|https\\://|ftp\\://|sftp\\://)|(www.))+((\\S+):(\\S+)@)?+(([a-zA-Z0-9\\.-]+\\.[a-zA-Z]{2,4})|([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}))(/[a-zA-Z0-9%:/-_\\?\\.'~]*)?");
String httpViewURL  = "myhttp://"; 
Linkify.addLinks(label, httpMatcher, httpViewURL);

Not works? What does not work? If you want us to help you, you better give us all the details. — Werner Kvalem Vesterås
– Werner Kvalem Vesterås, Commented Jan 14, 2013 at 21:05

gefei · Accepted Answer · 2013-01-14 21:13:16Z

5

I think this is cleaner that using regex:

boolean isLink(String s) {
  try {
     new URL(s);
     return true;
  } catch (MalformedURLException e) {
     return false;
  }
}

edited Jan 14, 2013 at 21:13

answered Jan 14, 2013 at 21:07

gefei

20k9 gold badges54 silver badges71 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

lacas Over a year ago

I have to use Pattern in this case, sorry. Because I d like to Linkify those text in a TextView

Vladimir Mironov · Accepted Answer · 2013-01-14 21:13:50Z

3

You can use Patterns.WEB_URL:

public boolean isLink(String string) {
    return Patterns.WEB_URL.matcher(string).matches();
}

Note that Patterns class is available only since API level 8, but you can get its source code here https://github.com/android/platform_frameworks_base/blob/master/core/java/android/util/Patterns.java

answered Jan 14, 2013 at 21:13

Vladimir Mironov

30.9k3 gold badges67 silver badges62 bronze badges

Comments

lacas · Accepted Answer · 2013-01-18 16:15:39Z

0

Pattern httpMatcher = Pattern.compile("((http\\://|https\\://)|(www.))+((\\S+):(\\S+)@)?+(([a-zA-Z0-9\\.-]+\\.[a-zA-Z]{2,4})|([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}))(/[a-zA-Z0-9%&#-:/-_\\?\\.'~]*)?");

this is working now, thanks

answered Jan 18, 2013 at 16:15

lacas

14.1k32 gold badges114 silver badges185 bronze badges

Collectives™ on Stack Overflow

Java/Android regex test if in a string is a link

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related