- syntax:
<data android:scheme="string" android:host="string" android:port="string" android:path="string" android:pathPattern="string" android:pathPrefix="string" android:pathSuffix="string" android:pathAdvancedPattern="string" android:mimeType="string" />
- contained in:
<intent-filter>
- description:
- Adds a data specification to an intent filter. The specification is
a data type, using the
mimeType
attribute, a URI, or both a data type and a URI. A URI is specified by separate attributes for each of its parts:<scheme>://<host>:<port>[<path>|<pathPrefix>|<pathPattern>|<pathAdvancedPattern>|<pathSuffix>]
These attributes that specify the URI format are optional, but also mutually dependent:
- If a
scheme
isn't specified for the intent filter, all the other URI attributes are ignored. - If a
host
isn't specified for the filter, theport
attribute and all the path attributes are ignored.
All the
<data>
elements contained within the same<intent-filter>
element contribute to the same filter. So, for example, the following filter specification:<intent-filter . . . > <data android:scheme="something" android:host="project.example.com" /> ... </intent-filter>
is equivalent to this one:
<intent-filter . . . > <data android:scheme="something" /> <data android:host="project.example.com" /> ... </intent-filter>
You can place any number of
<data>
elements inside an<intent-filter>
to give it multiple data options. None of its attributes have default values.For information on how intent filters work, including the rules for how intent objects are matched against filters, see Intents and Intent Filters and the Intent filters section in the manifest file overview.
- If a
- attributes:
android:scheme
- The scheme part of a URI. This is the minimal essential attribute for
specifying a URI. At least one
scheme
attribute must be set for the filter, or none of the other URI attributes are meaningful.A scheme is specified without the trailing colon, such as
http
rather thanhttp:
.If the filter has a data type set (using the
mimeType
attribute) but no scheme, thecontent:
andfile:
schemes are assumed.Note: Scheme matching in the Android framework is case-sensitive, unlike the RFC. As a result, always specify schemes using lowercase letters.
android:host
-
The host part of a URI authority. This attribute is meaningless
unless a
scheme
attribute is also specified for the filter. To match multiple subdomains, use an asterisk (*
) to match zero or more characters in the host. For example, the host*.google.com
matcheswww.google.com
,.google.com
, anddeveloper.google.com
.The asterisk must be the first character of the host attribute. For example, the host
google.co.*
is invalid, because the asterisk wildcard isn't the first character.Note: Host name matching in the Android framework is case-sensitive, unlike the formal RFC. As a result, always specify host names using lowercase letters.
android:port
- The port part of a URI authority. This attribute is meaningful only
if the
scheme
andhost
attributes are also specified for the filter. android:path
android:pathPrefix
android:pathSuffix
android:pathPattern
android:pathAdvancedPattern
- The path part of a URI, which must begin with a
/
. Thepath
attribute specifies a complete path that is matched against the complete path in anIntent
object. ThepathPrefix
attribute specifies a partial path that is matched against only the initial part of the path in theIntent
object.The
pathSuffix
attribute is matched exactly against the ending part of the path in theIntent
object, and this attribute doesn't have to begin with the/
character. ThepathPattern
attribute specifies a complete path that is matched against the complete path in theIntent
object, but it can contain the following wildcards:- An asterisk (
*
) matches a sequence of zero to many occurrences of the immediately preceding character. - A period followed by an asterisk (
.*
) matches any sequence of zero to many characters.
The
pathAdvancedPattern
attribute specifies a complete path, which is matched against the complete path of theIntent
object and supports the following regex-like patterns:-
A period (
.
) matches any character. -
A set (
[...]
) matches ranges of characters. For example ,[0-5]
matches a single digit from 0 through 5 but not 6 through 9.[a-zA-Z]
matches any letter, regardless of case. Sets also support the "not"^
modifier. -
The asterisk (
*
) modifier matches the preceding pattern zero or more times. -
The plus (
+
) modifier matches the preceding pattern one or more times. -
The range (
{...}
) modifier specifies the number of times a pattern can match.
pathAdvancedPattern
matcher is an evaluation implementation in which matching is done against the pattern in real time with no backtracking support.Because
\
is used as an escape character when the string is read from XML, before it is parsed as a pattern, you need to double-escape. For example, a literal*
is written as\\*
, and a literal\
is written as\\\
. This is like what you write when constructing the string in Java code.For more information about these five types of patterns, see the descriptions of
PATTERN_LITERAL
,PATTERN_PREFIX
,PATTERN_SIMPLE_GLOB
,PATTERN_SUFFIX
, andPATTERN_ADVANCED_GLOB
in thePatternMatcher
class.These attributes are meaningful only if the
scheme
andhost
attributes are also specified for the filter.pathSuffix
andpathAdvancedPattern
were introduced in API level 31. - An asterisk (
android:mimeType
- A MIME media type, such as
image/jpeg
oraudio/mpeg4-generic
. The subtype can be the asterisk wildcard (*
) to indicate that any subtype matches.It's common for an intent filter to declare a
<data>
element that includes only theandroid:mimeType
attribute.Note: MIME type matching in the Android framework is case-sensitive, unlike formal RFC MIME types. As a result, always specify MIME types using lowercase letters.
- introduced in:
- API level 1
- see also:
<action>
<category>
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2024-06-21 UTC.
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