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Android APIs
public class

IntentFilter

extends Object
implements Parcelable
java.lang.Object
   ↳ android.content.IntentFilter

Class Overview

Structured description of Intent values to be matched. An IntentFilter can match against actions, categories, and data (either via its type, scheme, and/or path) in an Intent. It also includes a "priority" value which is used to order multiple matching filters.

IntentFilter objects are often created in XML as part of a package's AndroidManifest.xml file, using intent-filter tags.

There are three Intent characteristics you can filter on: the action , data , and categories . For each of these characteristics you can provide multiple possible matching values (via addAction(String) , addDataType(String) , addDataScheme(String) , addDataSchemeSpecificPart(String, int) , addDataAuthority(String, String) , addDataPath(String, int) , and addCategory(String) , respectively). For actions, the field will not be tested if no values have been given (treating it as a wildcard); if no data characteristics are specified, however, then the filter will only match intents that contain no data.

The data characteristic is itself divided into three attributes: type, scheme, authority, and path. Any that are specified must match the contents of the Intent. If you specify a scheme but no type, only Intent that does not have a type (such as mailto:) will match; a content: URI will never match because they always have a MIME type that is supplied by their content provider. Specifying a type with no scheme has somewhat special meaning: it will match either an Intent with no URI field, or an Intent with a content: or file: URI. If you specify neither, then only an Intent with no data or type will match. To specify an authority, you must also specify one or more schemes that it is associated with. To specify a path, you also must specify both one or more authorities and one or more schemes it is associated with.

Developer Guides

For information about how to create and resolve intents, read the Intents and Intent Filters developer guide.

Filter Rules

A match is based on the following rules. Note that for an IntentFilter to match an Intent, three conditions must hold: the action and category must match, and the data (both the data type and data scheme+authority+path if specified) must match (see match(ContentResolver, Intent, boolean, String) for more details on how the data fields match).

Action matches if any of the given values match the Intent action; if the filter specifies no actions, then it will only match Intents that do not contain an action.

Data Type matches if any of the given values match the Intent type. The Intent type is determined by calling resolveType(ContentResolver) . A wildcard can be used for the MIME sub-type, in both the Intent and IntentFilter, so that the type "audio/*" will match "audio/mpeg", "audio/aiff", "audio/*", etc. Note that MIME type matching here is case sensitive , unlike formal RFC MIME types! You should thus always use lower case letters for your MIME types.

Data Scheme matches if any of the given values match the Intent data's scheme. The Intent scheme is determined by calling getData() and getScheme() on that URI. Note that scheme matching here is case sensitive , unlike formal RFC schemes! You should thus always use lower case letters for your schemes.

Data Scheme Specific Part matches if any of the given values match the Intent's data scheme specific part and one of the data schemes in the filter has matched the Intent, or no scheme specific parts were supplied in the filter. The Intent scheme specific part is determined by calling getData() and getSchemeSpecificPart() on that URI. Note that scheme specific part matching is case sensitive .

Data Authority matches if any of the given values match the Intent's data authority and one of the data schemes in the filter has matched the Intent, or no authories were supplied in the filter. The Intent authority is determined by calling getData() and getAuthority() on that URI. Note that authority matching here is case sensitive , unlike formal RFC host names! You should thus always use lower case letters for your authority.

Data Path matches if any of the given values match the Intent's data path and both a scheme and authority in the filter has matched against the Intent, or no paths were supplied in the filter. The Intent authority is determined by calling getData() and getPath() on that URI.

Categories match if all of the categories in the Intent match categories given in the filter. Extra categories in the filter that are not in the Intent will not cause the match to fail. Note that unlike the action, an IntentFilter with no categories will only match an Intent that does not have any categories.

Summary

Nested Classes
class IntentFilter.AuthorityEntry This is an entry for a single authority in the Iterator returned by authoritiesIterator() . 
class IntentFilter.MalformedMimeTypeException This exception is thrown when a given MIME type does not have a valid syntax. 
Constants
int MATCH_ADJUSTMENT_MASK The part of a match constant that applies a quality adjustment to the basic category of match.
int MATCH_ADJUSTMENT_NORMAL Quality adjustment applied to the category of match that signifies the default, base value; higher numbers improve the quality while lower numbers reduce it.
int MATCH_CATEGORY_EMPTY The filter matched an intent that had no data specified.
int MATCH_CATEGORY_HOST The filter matched an intent with the same data URI scheme and authority host.
int MATCH_CATEGORY_MASK The part of a match constant that describes the category of match that occurred.
int MATCH_CATEGORY_PATH The filter matched an intent with the same data URI scheme, authority, and path.
int MATCH_CATEGORY_PORT The filter matched an intent with the same data URI scheme and authority host and port.
int MATCH_CATEGORY_SCHEME The filter matched an intent with the same data URI scheme.
int MATCH_CATEGORY_SCHEME_SPECIFIC_PART The filter matched an intent with the same data URI scheme and scheme specific part.
int MATCH_CATEGORY_TYPE The filter matched an intent with the same data MIME type.
int NO_MATCH_ACTION The filter didn't match due to different actions.
int NO_MATCH_CATEGORY The filter didn't match because it required one or more categories that were not in the Intent.
int NO_MATCH_DATA The filter didn't match due to different data URIs.
int NO_MATCH_TYPE The filter didn't match due to different MIME types.
int SYSTEM_HIGH_PRIORITY The filter setPriority(int) value at which system high-priority receivers are placed; that is, receivers that should execute before application code.
int SYSTEM_LOW_PRIORITY The filter setPriority(int) value at which system low-priority receivers are placed; that is, receivers that should execute after application code.
[Expand]
Inherited Constants
From interface android.os.Parcelable
Fields
public static final Creator < IntentFilter > CREATOR
Public Constructors
IntentFilter ()
New empty IntentFilter.
IntentFilter ( String action)
New IntentFilter that matches a single action with no data.
IntentFilter ( String action, String dataType)
New IntentFilter that matches a single action and data type.
IntentFilter ( IntentFilter o)
New IntentFilter containing a copy of an existing filter.
Public Methods
final Iterator < String > actionsIterator ()
Return an iterator over the filter's actions.
final void addAction ( String action)
Add a new Intent action to match against.
final void addCategory ( String category)
Add a new Intent category to match against.
final void addDataAuthority ( String host, String port)
Add a new Intent data authority to match against.
final void addDataPath ( String path, int type)
Add a new Intent data path to match against.
final void addDataScheme ( String scheme)
Add a new Intent data scheme to match against.
final void addDataSchemeSpecificPart ( String ssp, int type)
Add a new Intent data "scheme specific part" to match against.
final void addDataType ( String type)
Add a new Intent data type to match against.
final Iterator < IntentFilter.AuthorityEntry > authoritiesIterator ()
Return an iterator over the filter's data authorities.
final Iterator < String > categoriesIterator ()
Return an iterator over the filter's categories.
final int countActions ()
Return the number of actions in the filter.
final int countCategories ()
Return the number of categories in the filter.
final int countDataAuthorities ()
Return the number of data authorities in the filter.
final int countDataPaths ()
Return the number of data paths in the filter.
final int countDataSchemeSpecificParts ()
Return the number of data scheme specific parts in the filter.
final int countDataSchemes ()
Return the number of data schemes in the filter.
final int countDataTypes ()
Return the number of data types in the filter.
static IntentFilter create ( String action, String dataType)
Create a new IntentFilter instance with a specified action and MIME type, where you know the MIME type is correctly formatted.
final int describeContents ()
Describe the kinds of special objects contained in this Parcelable's marshalled representation.
void dump ( Printer du, String prefix)
final String getAction (int index)
Return an action in the filter.
final String getCategory (int index)
Return a category in the filter.
final IntentFilter.AuthorityEntry getDataAuthority (int index)
Return a data authority in the filter.
final PatternMatcher getDataPath (int index)
Return a data path in the filter.
final String getDataScheme (int index)
Return a data scheme in the filter.
final PatternMatcher getDataSchemeSpecificPart (int index)
Return a data scheme specific part in the filter.
final String getDataType (int index)
Return a data type in the filter.
final int getPriority ()
Return the priority of this filter.
final boolean hasAction ( String action)
Is the given action included in the filter? Note that if the filter does not include any actions, false will always be returned.
final boolean hasCategory ( String category)
Is the given category included in the filter?
final boolean hasDataAuthority ( Uri data)
Is the given data authority included in the filter? Note that if the filter does not include any authorities, false will always be returned.
final boolean hasDataPath ( String data)
Is the given data path included in the filter? Note that if the filter does not include any paths, false will always be returned.
final boolean hasDataScheme ( String scheme)
Is the given data scheme included in the filter? Note that if the filter does not include any scheme, false will always be returned.
final boolean hasDataSchemeSpecificPart ( String data)
Is the given data scheme specific part included in the filter? Note that if the filter does not include any scheme specific parts, false will always be returned.
final boolean hasDataType ( String type)
Is the given data type included in the filter? Note that if the filter does not include any type, false will always be returned.
final int match ( ContentResolver resolver, Intent intent, boolean resolve, String logTag)
Test whether this filter matches the given intent .
final int , java.lang.String)">match ( String action, String type, String scheme, Uri data, Set < String > categories, String logTag)
Test whether this filter matches the given intent data.
final boolean matchAction ( String action)
Match this filter against an Intent's action.
final String )">matchCategories ( Set < String > categories)
Match this filter against an Intent's categories.
final int matchData ( String type, String scheme, Uri data)
Match this filter against an Intent's data (type, scheme and path).
final int matchDataAuthority ( Uri data)
Match this intent filter against the given Intent data.
final Iterator < PatternMatcher > pathsIterator ()
Return an iterator over the filter's data paths.
void readFromXml ( XmlPullParser parser)
final Iterator < PatternMatcher > schemeSpecificPartsIterator ()
Return an iterator over the filter's data scheme specific parts.
final Iterator < String > schemesIterator ()
Return an iterator over the filter's data schemes.
final void setPriority (int priority)
Modify priority of this filter.
final Iterator < String > typesIterator ()
Return an iterator over the filter's data types.
final void writeToParcel ( Parcel dest, int flags)
Flatten this object in to a Parcel.
void writeToXml ( XmlSerializer serializer)
Write the contents of the IntentFilter as an XML stream.
[Expand]
Inherited Methods
From class java.lang.Object
From interface android.os.Parcelable

Constants

public static final int MATCH_ADJUSTMENT_MASK

Added in API level 1

The part of a match constant that applies a quality adjustment to the basic category of match. The value MATCH_ADJUSTMENT_NORMAL is no adjustment; higher numbers than that improve the quality, while lower numbers reduce it.

Constant Value: 65535 (0x0000ffff)

public static final int MATCH_ADJUSTMENT_NORMAL

Added in API level 1

Quality adjustment applied to the category of match that signifies the default, base value; higher numbers improve the quality while lower numbers reduce it.

Constant Value: 32768 (0x00008000)

public static final int MATCH_CATEGORY_EMPTY

Added in API level 1

The filter matched an intent that had no data specified.

Constant Value: 1048576 (0x00100000)

public static final int MATCH_CATEGORY_HOST

Added in API level 1

The filter matched an intent with the same data URI scheme and authority host.

Constant Value: 3145728 (0x00300000)

public static final int MATCH_CATEGORY_MASK

Added in API level 1

The part of a match constant that describes the category of match that occurred. May be either MATCH_CATEGORY_EMPTY , MATCH_CATEGORY_SCHEME , MATCH_CATEGORY_SCHEME_SPECIFIC_PART , MATCH_CATEGORY_HOST , MATCH_CATEGORY_PORT , MATCH_CATEGORY_PATH , or MATCH_CATEGORY_TYPE . Higher values indicate a better match.

Constant Value: 268369920 (0x0fff0000)

public static final int MATCH_CATEGORY_PATH

Added in API level 1

The filter matched an intent with the same data URI scheme, authority, and path.

Constant Value: 5242880 (0x00500000)

public static final int MATCH_CATEGORY_PORT

Added in API level 1

The filter matched an intent with the same data URI scheme and authority host and port.

Constant Value: 4194304 (0x00400000)

public static final int MATCH_CATEGORY_SCHEME

Added in API level 1

The filter matched an intent with the same data URI scheme.

Constant Value: 2097152 (0x00200000)

public static final int MATCH_CATEGORY_SCHEME_SPECIFIC_PART

Added in API level 19

The filter matched an intent with the same data URI scheme and scheme specific part.

Constant Value: 5767168 (0x00580000)

public static final int MATCH_CATEGORY_TYPE

Added in API level 1

The filter matched an intent with the same data MIME type.

Constant Value: 6291456 (0x00600000)

public static final int NO_MATCH_ACTION

Added in API level 1

The filter didn't match due to different actions.

Constant Value: -3 (0xfffffffd)

public static final int NO_MATCH_CATEGORY

Added in API level 1

The filter didn't match because it required one or more categories that were not in the Intent.

Constant Value: -4 (0xfffffffc)

public static final int NO_MATCH_DATA

Added in API level 1

The filter didn't match due to different data URIs.

Constant Value: -2 (0xfffffffe)

public static final int NO_MATCH_TYPE

Added in API level 1

The filter didn't match due to different MIME types.

Constant Value: -1 (0xffffffff)

public static final int SYSTEM_HIGH_PRIORITY

Added in API level 1

The filter setPriority(int) value at which system high-priority receivers are placed; that is, receivers that should execute before application code. Applications should never use filters with this or higher priorities.

See Also
Constant Value: 1000 (0x000003e8)

public static final int SYSTEM_LOW_PRIORITY

Added in API level 1

The filter setPriority(int) value at which system low-priority receivers are placed; that is, receivers that should execute after application code. Applications should never use filters with this or lower priorities.

See Also
Constant Value: -1000 (0xfffffc18)

Fields

public static final Creator < IntentFilter > CREATOR

Added in API level 1

Public Constructors

public IntentFilter ()

Added in API level 1

New empty IntentFilter.

public IntentFilter ( String action)

Added in API level 1

New IntentFilter that matches a single action with no data. If no data characteristics are subsequently specified, then the filter will only match intents that contain no data.

Parameters
action The action to match, i.e. Intent.ACTION_MAIN.

public IntentFilter ( String action, String dataType)

Added in API level 1

New IntentFilter that matches a single action and data type.

Note: MIME type matching in the Android framework is case-sensitive, unlike formal RFC MIME types. As a result, you should always write your MIME types with lower case letters, and any MIME types you receive from outside of Android should be converted to lower case before supplying them here.

Throws IntentFilter.MalformedMimeTypeException if the given MIME type is not syntactically correct.

Parameters
action The action to match, i.e. Intent.ACTION_VIEW.
dataType The type to match, i.e. "vnd.android.cursor.dir/person".
Throws
IntentFilter.MalformedMimeTypeException

public IntentFilter ( IntentFilter o)

Added in API level 1

New IntentFilter containing a copy of an existing filter.

Parameters
o The original filter to copy.

Public Methods

public final Iterator < String > actionsIterator ()

Added in API level 1

Return an iterator over the filter's actions. If there are no actions, returns null.

public final void addAction ( String action)

Added in API level 1

Add a new Intent action to match against. If any actions are included in the filter, then an Intent's action must be one of those values for it to match. If no actions are included, the Intent action is ignored.

Parameters
action Name of the action to match, i.e. Intent.ACTION_VIEW.

public final void addCategory ( String category)

Added in API level 1

Add a new Intent category to match against. The semantics of categories is the opposite of actions -- an Intent includes the categories that it requires, all of which must be included in the filter in order to match. In other words, adding a category to the filter has no impact on matching unless that category is specified in the intent.

Parameters
category Name of category to match, i.e. Intent.CATEGORY_EMBED.

public final void addDataAuthority ( String host, String port)

Added in API level 1

Add a new Intent data authority to match against. The filter must include one or more schemes (via addDataScheme(String) ) for the authority to be considered. If any authorities are included in the filter, then an Intent's data must match one of them. If no authorities are included, then only the scheme must match.

Note: host name in the Android framework is case-sensitive, unlike formal RFC host names. As a result, you should always write your host names with lower case letters, and any host names you receive from outside of Android should be converted to lower case before supplying them here.

Parameters
host The host part of the authority to match. May start with a single '*' to wildcard the front of the host name.
port Optional port part of the authority to match. If null, any port is allowed.
See Also

public final void addDataPath ( String path, int type)

Added in API level 1

Add a new Intent data path to match against. The filter must include one or more schemes (via addDataScheme(String) ) and one or more authorities (via addDataAuthority(String, String) ) for the path to be considered. If any paths are included in the filter, then an Intent's data must match one of them. If no paths are included, then only the scheme/authority must match.

The path given here can either be a literal that must directly match or match against a prefix, or it can be a simple globbing pattern. If the latter, you can use '*' anywhere in the pattern to match zero or more instances of the previous character, '.' as a wildcard to match any character, and '\' to escape the next character.

Parameters
path Either a raw string that must exactly match the file path, or a simple pattern, depending on type .
type Determines how path will be compared to determine a match: either PATTERN_LITERAL , PATTERN_PREFIX , or PATTERN_SIMPLE_GLOB .
See Also

public final void addDataScheme ( String scheme)

Added in API level 1

Add a new Intent data scheme to match against. If any schemes are included in the filter, then an Intent's data must be either one of these schemes or a matching data type. If no schemes are included, then an Intent will match only if it includes no data.

Note: scheme matching in the Android framework is case-sensitive, unlike formal RFC schemes. As a result, you should always write your schemes with lower case letters, and any schemes you receive from outside of Android should be converted to lower case before supplying them here.

Parameters
scheme Name of the scheme to match, i.e. "http".
See Also

public final void addDataSchemeSpecificPart ( String ssp, int type)

Add a new Intent data "scheme specific part" to match against. The filter must include one or more schemes (via addDataScheme(String) ) for the scheme specific part to be considered. If any scheme specific parts are included in the filter, then an Intent's data must match one of them. If no scheme specific parts are included, then only the scheme must match.

The "scheme specific part" that this matches against is the string returned by Uri.getSchemeSpecificPart . For Uris that contain a path, this kind of matching is not generally of interest, since addDataAuthority(String, String) and addDataPath(String, int) can provide a better mechanism for matching them. However, for Uris that do not contain a path, the authority and path are empty, so this is the only way to match against the non-scheme part.

Parameters
ssp Either a raw string that must exactly match the scheme specific part path, or a simple pattern, depending on type .
type Determines how ssp will be compared to determine a match: either PATTERN_LITERAL , PATTERN_PREFIX , or PATTERN_SIMPLE_GLOB .
See Also

public final void addDataType ( String type)

Added in API level 1

Add a new Intent data type to match against. If any types are included in the filter, then an Intent's data must be either one of these types or a matching scheme. If no data types are included, then an Intent will only match if it specifies no data.

Note: MIME type matching in the Android framework is case-sensitive, unlike formal RFC MIME types. As a result, you should always write your MIME types with lower case letters, and any MIME types you receive from outside of Android should be converted to lower case before supplying them here.

Throws IntentFilter.MalformedMimeTypeException if the given MIME type is not syntactically correct.

Parameters
type Name of the data type to match, i.e. "vnd.android.cursor.dir/person".
Throws
IntentFilter.MalformedMimeTypeException
See Also

public final Iterator < IntentFilter.AuthorityEntry > authoritiesIterator ()

Added in API level 1

Return an iterator over the filter's data authorities.

public final Iterator < String > categoriesIterator ()

Added in API level 1

Return an iterator over the filter's categories.

Returns
  • Iterator if this filter has categories or null if none.

public final int countActions ()

Added in API level 1

Return the number of actions in the filter.

public final int countCategories ()

Added in API level 1

Return the number of categories in the filter.

public final int countDataAuthorities ()

Added in API level 1

Return the number of data authorities in the filter.

public final int countDataPaths ()

Added in API level 1

Return the number of data paths in the filter.

public final int countDataSchemeSpecificParts ()

Return the number of data scheme specific parts in the filter.

public final int countDataSchemes ()

Added in API level 1

Return the number of data schemes in the filter.

public final int countDataTypes ()

Added in API level 1

Return the number of data types in the filter.

public static IntentFilter create ( String action, String dataType)

Added in API level 1

Create a new IntentFilter instance with a specified action and MIME type, where you know the MIME type is correctly formatted. This catches the IntentFilter.MalformedMimeTypeException exception that the constructor can call and turns it into a runtime exception.

Parameters
action The action to match, i.e. Intent.ACTION_VIEW.
dataType The type to match, i.e. "vnd.android.cursor.dir/person".
Returns
  • A new IntentFilter for the given action and type.
See Also

public final int describeContents ()

Added in API level 1

Describe the kinds of special objects contained in this Parcelable's marshalled representation.

Returns
  • a bitmask indicating the set of special object types marshalled by the Parcelable.

public void dump ( Printer du, String prefix)

Added in API level 1

public final String getAction (int index)

Added in API level 1

Return an action in the filter.

public final String getCategory (int index)

Added in API level 1

Return a category in the filter.

public final IntentFilter.AuthorityEntry getDataAuthority (int index)

Added in API level 1

Return a data authority in the filter.

public final PatternMatcher getDataPath (int index)

Added in API level 1

Return a data path in the filter.

public final String getDataScheme (int index)

Added in API level 1

Return a data scheme in the filter.

public final PatternMatcher getDataSchemeSpecificPart (int index)

Return a data scheme specific part in the filter.

public final String getDataType (int index)

Added in API level 1

Return a data type in the filter.

public final int getPriority ()

Added in API level 1

Return the priority of this filter.

Returns
  • The priority of the filter.
See Also

public final boolean hasAction ( String action)

Added in API level 1

Is the given action included in the filter? Note that if the filter does not include any actions, false will always be returned.

Parameters
action The action to look for.
Returns
  • True if the action is explicitly mentioned in the filter.

public final boolean hasCategory ( String category)

Added in API level 1

Is the given category included in the filter?

Parameters
category The category that the filter supports.
Returns
  • True if the category is explicitly mentioned in the filter.

public final boolean hasDataAuthority ( Uri data)

Added in API level 1

Is the given data authority included in the filter? Note that if the filter does not include any authorities, false will always be returned.

Parameters
data The data whose authority is being looked for.
Returns
  • Returns true if the data string matches an authority listed in the filter.

public final boolean hasDataPath ( String data)

Added in API level 1

Is the given data path included in the filter? Note that if the filter does not include any paths, false will always be returned.

Parameters
data The data path to look for. This is without the scheme prefix.
Returns
  • True if the data string matches a path listed in the filter.

public final boolean hasDataScheme ( String scheme)

Added in API level 1

Is the given data scheme included in the filter? Note that if the filter does not include any scheme, false will always be returned.

Parameters
scheme The data scheme to look for.
Returns
  • True if the scheme is explicitly mentioned in the filter.

public final boolean hasDataSchemeSpecificPart ( String data)

Is the given data scheme specific part included in the filter? Note that if the filter does not include any scheme specific parts, false will always be returned.

Parameters
data The scheme specific part that is being looked for.
Returns
  • Returns true if the data string matches a scheme specific part listed in the filter.

public final boolean hasDataType ( String type)

Added in API level 1

Is the given data type included in the filter? Note that if the filter does not include any type, false will always be returned.

Parameters
type The data type to look for.
Returns
  • True if the type is explicitly mentioned in the filter.

public final int match ( ContentResolver resolver, Intent intent, boolean resolve, String logTag)

Added in API level 1

Test whether this filter matches the given intent .

Parameters
intent The Intent to compare against.
resolve If true, the intent's type will be resolved by calling Intent.resolveType(); otherwise a simple match against Intent.type will be performed.
logTag Tag to use in debugging messages.
Returns
See Also
, java.lang.String)">

public final int match ( String action, String type, String scheme, Uri data, Set < String > categories, String logTag)

Added in API level 1

Test whether this filter matches the given intent data. A match is only successful if the actions and categories in the Intent match against the filter, as described in IntentFilter ; in that case, the match result returned will be as per matchData(String, String, Uri) .

Parameters
action The intent action to match against (Intent.getAction).
type The intent type to match against (Intent.resolveType()).
scheme The data scheme to match against (Intent.getScheme()).
data The data URI to match against (Intent.getData()).
categories The categories to match against (Intent.getCategories()).
logTag Tag to use in debugging messages.
Returns
See Also

public final boolean matchAction ( String action)

Added in API level 1

Match this filter against an Intent's action. If the filter does not specify any actions, the match will always fail.

Parameters
action The desired action to look for.
Returns
  • True if the action is listed in the filter.
)">

public final String matchCategories ( Set < String > categories)

Added in API level 1

Match this filter against an Intent's categories. Each category in the Intent must be specified by the filter; if any are not in the filter, the match fails.

Parameters
categories The categories included in the intent, as returned by Intent.getCategories().
Returns
  • If all categories match (success), null; else the name of the first category that didn't match.

public final int matchData ( String type, String scheme, Uri data)

Added in API level 1

Match this filter against an Intent's data (type, scheme and path). If the filter does not specify any types and does not specify any schemes/paths, the match will only succeed if the intent does not also specify a type or data. If the filter does not specify any schemes, it will implicitly match intents with no scheme, or the schemes "content:" or "file:" (basically performing a MIME-type only match). If the filter does not specify any MIME types, the Intent also must not specify a MIME type.

Be aware that to match against an authority, you must also specify a base scheme the authority is in. To match against a data path, both a scheme and authority must be specified. If the filter does not specify any types or schemes that it matches against, it is considered to be empty (any authority or data path given is ignored, as if it were empty as well).

Note: MIME type, Uri scheme, and host name matching in the Android framework is case-sensitive, unlike the formal RFC definitions. As a result, you should always write these elements with lower case letters, and normalize any MIME types or Uris you receive from outside of Android to ensure these elements are lower case before supplying them here.

Parameters
type The desired data type to look for, as returned by Intent.resolveType().
scheme The desired data scheme to look for, as returned by Intent.getScheme().
data The full data string to match against, as supplied in Intent.data.
Returns
See Also

public final int matchDataAuthority ( Uri data)

Added in API level 1

Match this intent filter against the given Intent data. This ignores the data scheme -- unlike matchData(String, String, Uri) , the authority will match regardless of whether there is a matching scheme.

Parameters
data The data whose authority is being looked for.
Returns

public final Iterator < PatternMatcher > pathsIterator ()

Added in API level 1

Return an iterator over the filter's data paths.

public void readFromXml ( XmlPullParser parser)

Added in API level 1

Throws
XmlPullParserException
IOException

public final Iterator < PatternMatcher > schemeSpecificPartsIterator ()

Return an iterator over the filter's data scheme specific parts.

public final Iterator < String > schemesIterator ()

Added in API level 1

Return an iterator over the filter's data schemes.

public final void setPriority (int priority)

Added in API level 1

Modify priority of this filter. The default priority is 0. Positive values will be before the default, lower values will be after it. Applications must use a value that is larger than SYSTEM_LOW_PRIORITY and smaller than SYSTEM_HIGH_PRIORITY .

Parameters
priority The new priority value.
See Also

public final Iterator < String > typesIterator ()

Added in API level 1

Return an iterator over the filter's data types.

public final void writeToParcel ( Parcel dest, int flags)

Added in API level 1

Flatten this object in to a Parcel.

Parameters
dest The Parcel in which the object should be written.
flags Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE .

public void writeToXml ( XmlSerializer serializer)

Added in API level 1

Write the contents of the IntentFilter as an XML stream.

Throws
IOException