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Android Reference

Linkify


android.text.util

Class Linkify


  • public class Linkify
extends Object
    Linkify take a piece of text and a regular expression and turns all of the regex matches in the text into clickable links. This is particularly useful for matching things like email addresses, web urls, etc. and making them actionable. Alone with the pattern that is to be matched, a url scheme prefix is also required. Any pattern match that does not begin with the supplied scheme will have the scheme prepended to the matched text when the clickable url is created. For instance, if you are matching web urls you would supply the scheme http://. If the pattern matches example.com, which does not have a url scheme prefix, the supplied scheme will be prepended to create http://example.com when the clickable url link is created.

    • Nested Class Summary

      Nested Classes
      Modifier and Type Class and Description
      static interface Linkify.MatchFilter
      MatchFilter enables client code to have more control over what is allowed to match and become a link, and what is not.
      static interface Linkify.TransformFilter
      TransformFilter enables client code to have more control over how matched patterns are represented as URLs.

    • Field Summary

      Fields
      Modifier and Type Field and Description
      static int ALL
      Bit mask indicating that all available patterns should be matched in methods that take an options mask
      static int EMAIL_ADDRESSES
      Bit field indicating that email addresses should be matched in methods that take an options mask
      static int MAP_ADDRESSES
      Bit field indicating that street addresses should be matched in methods that take an options mask
      static int PHONE_NUMBERS
      Bit field indicating that phone numbers should be matched in methods that take an options mask
      static Linkify.MatchFilter sPhoneNumberMatchFilter
      Filters out URL matches that don't have enough digits to be a phone number.
      static Linkify.TransformFilter sPhoneNumberTransformFilter
      Transforms matched phone number text into something suitable to be used in a tel: URL.
      static Linkify.MatchFilter sUrlMatchFilter
      Filters out web URL matches that occur after an at-sign (@).
      static int WEB_URLS
      Bit field indicating that web URLs should be matched in methods that take an options mask

    • Constructor Summary

      Constructors
      Constructor and Description
      Linkify()

    • Field Detail

      • WEB_URLS

        public static final int WEB_URLS
        Bit field indicating that web URLs should be matched in methods that take an options mask
        See Also:
        Constant Field Values

      • EMAIL_ADDRESSES

        public static final int EMAIL_ADDRESSES
        Bit field indicating that email addresses should be matched in methods that take an options mask
        See Also:
        Constant Field Values

      • PHONE_NUMBERS

        public static final int PHONE_NUMBERS
        Bit field indicating that phone numbers should be matched in methods that take an options mask
        See Also:
        Constant Field Values

      • MAP_ADDRESSES

        public static final int MAP_ADDRESSES
        Bit field indicating that street addresses should be matched in methods that take an options mask
        See Also:
        Constant Field Values

      • ALL

        public static final int ALL
        Bit mask indicating that all available patterns should be matched in methods that take an options mask
        See Also:
        Constant Field Values

      • sUrlMatchFilter

        public static final Linkify.MatchFilter sUrlMatchFilter
        Filters out web URL matches that occur after an at-sign (@). This is to prevent turning the domain name in an email address into a web link.

      • sPhoneNumberMatchFilter

        public static final Linkify.MatchFilter sPhoneNumberMatchFilter
        Filters out URL matches that don't have enough digits to be a phone number.

      • sPhoneNumberTransformFilter

        public static final Linkify.TransformFilter sPhoneNumberTransformFilter
        Transforms matched phone number text into something suitable to be used in a tel: URL. It does this by removing everything but the digits and plus signs. For instance: '+1 (919) 555-1212' becomes '+19195551212'

    • Constructor Detail

      • Linkify

        public Linkify()

    • Method Detail

      • addLinks

        public static final boolean addLinks(Spannable text,
               int mask)
        Scans the text of the provided Spannable and turns all occurrences of the link types indicated in the mask into clickable links. If the mask is nonzero, it also removes any existing URLSpans attached to the Spannable, to avoid problems if you call it repeatedly on the same text.

      • addLinks

        public static final boolean addLinks(TextView text,
               int mask)
        Scans the text of the provided TextView and turns all occurrences of the link types indicated in the mask into clickable links. If matches are found the movement method for the TextView is set to LinkMovementMethod.

      • addLinks

        public static final void addLinks(TextView text,
            Pattern pattern,
            String scheme)
        Applies a regex to the text of a TextView turning the matches into links. If links are found then UrlSpans are applied to the link text match areas, and the movement method for the text is changed to LinkMovementMethod.
        Parameters:
        text - TextView whose text is to be marked-up with links
        pattern - Regex pattern to be used for finding links
        scheme - Url scheme string (eg http:// to be prepended to the url of links that do not have a scheme specified in the link text

      • addLinks

        public static final void addLinks(TextView text,
            Pattern p,
            String scheme,
            Linkify.MatchFilter matchFilter,
            Linkify.TransformFilter transformFilter)
        Applies a regex to the text of a TextView turning the matches into links. If links are found then UrlSpans are applied to the link text match areas, and the movement method for the text is changed to LinkMovementMethod.
        Parameters:
        text - TextView whose text is to be marked-up with links
        p - Regex pattern to be used for finding links
        scheme - Url scheme string (eg http:// to be prepended to the url of links that do not have a scheme specified in the link text
        matchFilter - The filter that is used to allow the client code additional control over which pattern matches are to be converted into links.

      • addLinks

        public static final boolean addLinks(Spannable text,
               Pattern pattern,
               String scheme)
        Applies a regex to a Spannable turning the matches into links.
        Parameters:
        text - Spannable whose text is to be marked-up with links
        pattern - Regex pattern to be used for finding links
        scheme - Url scheme string (eg http:// to be prepended to the url of links that do not have a scheme specified in the link text

      • addLinks

        public static final boolean addLinks(Spannable s,
               Pattern p,
               String scheme,
               Linkify.MatchFilter matchFilter,
               Linkify.TransformFilter transformFilter)
        Applies a regex to a Spannable turning the matches into links.
        Parameters:
        s - Spannable whose text is to be marked-up with links
        p - Regex pattern to be used for finding links
        scheme - Url scheme string (eg http:// to be prepended to the url of links that do not have a scheme specified in the link text
        matchFilter - The filter that is used to allow the client code additional control over which pattern matches are to be converted into links.


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