<grant-uri-permission android:path="string" android:pathPattern="string" android:pathPrefix="string" />
<provider>content: URI. (The authority part of the URI identifies the
content provider.)
Granting permission is a way of enabling clients of the provider that don't
normally have permission to access its data to overcome that restriction on
a one-time basis.
If a content provider's grantUriPermissions
attribute is "true", permission can be granted for any the data under
the provider's purview. However, if that attribute is "false", permission
can be granted only to data subsets that are specified by this element.
A provider can contain any number of <grant-uri-permission> elements.
Each one can specify only one path (only one of the three possible attributes).
For information on how permission is granted, see the
<intent-filter> element's
grantUriPermissions attribute.
android:path
android:pathPrefix
android:pathPatternpath attribute specifies a complete path;
permission can be granted only to the particular data subset identified
by that path.
The pathPrefix attribute specifies the initial part of a path;
permission can be granted to all data subsets with paths that share that
initial part.
The pathPattern attribute specifies a complete path, but one
that can contain the following wildcards:
*') matches a sequence of 0 to many occurrences of
the immediately preceding character.A period followed by an asterisk (".*") matches any sequence of
0 to many characters.
Because '\' is used as an escape character when the string is read
from XML (before it is parsed as a pattern), you will need to double-escape:
For example, a literal '*' would be written as "\\*" and a
literal '\' would be written as "\\\\". This is basically
the same as what you would need to write if constructing the string in Java code.
For more information on these types of patterns, see the descriptions of
PATTERN_LITERAL,
PATTERN_PREFIX, and
PATTERN_SIMPLE_GLOB in the
PatternMatcher class.
grantUriPermissions
attribute of the
<provider>
element