Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

# android.text.util

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Utilities for converting identifiable text strings into clickable links and creating RFC 822-type message (SMTP) tokens.

## Interfaces

|---|---|
| [Linkify.MatchFilter](https://developer.android.com/reference/android/text/util/Linkify.MatchFilter) | MatchFilter enables client code to have more control over what is allowed to match and become a link, and what is not. |
| [Linkify.TransformFilter](https://developer.android.com/reference/android/text/util/Linkify.TransformFilter) | TransformFilter enables client code to have more control over how matched patterns are represented as URLs. |

## Classes

|---|---|
| [Linkify](https://developer.android.com/reference/android/text/util/Linkify) | Linkify take a piece of text and a regular expression and turns all of the regex matches in the text into clickable links. |
| [Rfc822Token](https://developer.android.com/reference/android/text/util/Rfc822Token) | This class stores an RFC 822-like name, address, and comment, and provides methods to convert them to quoted strings. |
| [Rfc822Tokenizer](https://developer.android.com/reference/android/text/util/Rfc822Tokenizer) | This class works as a Tokenizer for MultiAutoCompleteTextView for address list fields, and also provides a method for converting a string of addresses (such as might be typed into such a field) into a series of Rfc822Tokens. |

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  ## Interfaces

  - [Linkify.MatchFilter](https://developer.android.com/reference/android/text/util/Linkify.MatchFilter)
  - [Linkify.TransformFilter](https://developer.android.com/reference/android/text/util/Linkify.TransformFilter)
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  ## Classes

  - [Linkify](https://developer.android.com/reference/android/text/util/Linkify)
  - [Rfc822Token](https://developer.android.com/reference/android/text/util/Rfc822Token)
  - [Rfc822Tokenizer](https://developer.android.com/reference/android/text/util/Rfc822Tokenizer)