public final class UserHandle extends Object implements Parcelable
Parcelable.ClassLoaderCreator<T>, Parcelable.Creator<T>
Modifier and Type | Field and Description |
---|---|
static UserHandle |
ALL |
static Parcelable.Creator<UserHandle> |
CREATOR |
static UserHandle |
CURRENT |
static UserHandle |
CURRENT_OR_SELF |
static boolean |
MU_ENABLED |
static UserHandle |
OWNER
Deprecated.
Consider using either
SYSTEM constant or
check the target user's flag UserInfo.isAdmin() . |
static int |
PER_USER_RANGE |
static UserHandle |
SYSTEM |
static int |
USER_ALL |
static int |
USER_CURRENT |
static int |
USER_CURRENT_OR_SELF |
static int |
USER_NULL |
static int |
USER_OWNER
Deprecated.
Consider using either
USER_SYSTEM constant or
check the target user's flag UserInfo.isAdmin() . |
static int |
USER_SERIAL_SYSTEM |
static int |
USER_SYSTEM |
CONTENTS_FILE_DESCRIPTOR, PARCELABLE_ELIDE_DUPLICATES, PARCELABLE_WRITE_RETURN_VALUE
Constructor and Description |
---|
UserHandle(int h) |
UserHandle(Parcel in)
Instantiate a new UserHandle from the data in a Parcel that was
previously written with
writeToParcel(Parcel, int) . |
Modifier and Type | Method and Description |
---|---|
int |
describeContents()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation.
|
boolean |
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
static String |
formatUid(int uid)
Generate a text representation of the uid, breaking out its individual
components -- user, app, isolated, etc.
|
static void |
formatUid(PrintWriter pw,
int uid)
Generate a text representation of the uid, breaking out its individual
components -- user, app, isolated, etc.
|
static void |
formatUid(StringBuilder sb,
int uid)
Generate a text representation of the uid, breaking out its individual
components -- user, app, isolated, etc.
|
static int |
getAppId(int uid)
Returns the app id (or base uid) for a given uid, stripping out the user id from it.
|
static int |
getAppIdFromSharedAppGid(int gid)
Returns the app id for a given shared app gid.
|
static int |
getCallingUserId() |
int |
getIdentifier()
Returns the userId stored in this UserHandle.
|
static int |
getSharedAppGid(int id)
Returns the shared app gid for a given uid or appId.
|
static int |
getUid(int userId,
int appId)
Returns the uid that is composed from the userId and the appId.
|
static int |
getUserGid(int userId)
Returns the gid shared between all apps with this userId.
|
static UserHandle |
getUserHandleForUid(int uid)
Returns the user for a given uid.
|
static int |
getUserId(int uid)
Returns the user id for a given uid.
|
int |
hashCode()
Returns a hash code value for the object.
|
static boolean |
isApp(int uid) |
static boolean |
isIsolated(int uid) |
boolean |
isOwner()
Deprecated.
please use
isSystem() or check for
UserInfo.isPrimary()
UserInfo.isAdmin() based on your particular use case. |
static boolean |
isSameApp(int uid1,
int uid2)
Checks to see if both uids are referring to the same app id, ignoring the user id part of the
uids.
|
static boolean |
isSameUser(int uid1,
int uid2)
Checks to see if the user id is the same for the two uids, i.e., they belong to the same
user.
|
boolean |
isSystem() |
static int |
myUserId()
Returns the user id of the current process
|
static UserHandle |
of(int userId) |
static int |
parseUserArg(String arg) |
static UserHandle |
readFromParcel(Parcel in)
Read a UserHandle from a Parcel that was previously written
with
writeToParcel(UserHandle, Parcel) , returning either
a null or new object as appropriate. |
String |
toString()
Returns a string representation of the object.
|
void |
writeToParcel(Parcel out,
int flags)
Flatten this object in to a Parcel.
|
static void |
writeToParcel(UserHandle h,
Parcel out)
Write a UserHandle to a Parcel, handling null pointers.
|
public static final int PER_USER_RANGE
public static final int USER_ALL
public static final UserHandle ALL
public static final int USER_CURRENT
public static final UserHandle CURRENT
public static final int USER_CURRENT_OR_SELF
public static final UserHandle CURRENT_OR_SELF
public static final int USER_NULL
public static final int USER_OWNER
USER_SYSTEM
constant or
check the target user's flag UserInfo.isAdmin()
.public static final UserHandle OWNER
SYSTEM
constant or
check the target user's flag UserInfo.isAdmin()
.public static final int USER_SYSTEM
public static final int USER_SERIAL_SYSTEM
public static final UserHandle SYSTEM
public static final boolean MU_ENABLED
public static final Parcelable.Creator<UserHandle> CREATOR
public UserHandle(int h)
public UserHandle(Parcel in)
writeToParcel(Parcel, int)
. Note that you
must not use this with data written by
writeToParcel(UserHandle, Parcel)
since it is not possible
to handle a null UserHandle here.in
- The Parcel containing the previously written UserHandle,
positioned at the location in the buffer where it was written.public static boolean isSameUser(int uid1, int uid2)
public static boolean isSameApp(int uid1, int uid2)
uid1
- uid to compareuid2
- other uid to comparepublic static boolean isIsolated(int uid)
public static boolean isApp(int uid)
public static UserHandle getUserHandleForUid(int uid)
uid
- A uid for an application running in a particular user.UserHandle
for that user.public static int getUserId(int uid)
public static int getCallingUserId()
public static UserHandle of(int userId)
public static int getUid(int userId, int appId)
public static int getAppId(int uid)
public static int getUserGid(int userId)
public static int getSharedAppGid(int id)
public static int getAppIdFromSharedAppGid(int gid)
public static void formatUid(StringBuilder sb, int uid)
public static String formatUid(int uid)
public static void formatUid(PrintWriter pw, int uid)
public static int parseUserArg(String arg)
public static int myUserId()
public boolean isOwner()
isSystem()
or check for
UserInfo.isPrimary()
UserInfo.isAdmin()
based on your particular use case.public boolean isSystem()
public int getIdentifier()
public String toString()
Object
toString
method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.
The toString
method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@
', and
the unsigned hexadecimal representation of the hash code of the
object. In other words, this method returns a string equal to the
value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
public boolean equals(Object obj)
Object
The equals
method implements an equivalence relation
on non-null object references:
x
, x.equals(x)
should return
true
.
x
and y
, x.equals(y)
should return true
if and only if
y.equals(x)
returns true
.
x
, y
, and z
, if
x.equals(y)
returns true
and
y.equals(z)
returns true
, then
x.equals(z)
should return true
.
x
and y
, multiple invocations of
x.equals(y)
consistently return true
or consistently return false
, provided no
information used in equals
comparisons on the
objects is modified.
x
,
x.equals(null)
should return false
.
The equals
method for class Object
implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x
and
y
, this method returns true
if and only
if x
and y
refer to the same object
(x == y
has the value true
).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode
method, which states
that equal objects must have equal hash codes.
equals
in class Object
obj
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.Object.hashCode()
,
HashMap
public int hashCode()
Object
HashMap
.
The general contract of hashCode
is:
hashCode
method
must consistently return the same integer, provided no information
used in equals
comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.
equals(Object)
method, then calling the hashCode
method on each of
the two objects must produce the same integer result.
Object.equals(java.lang.Object)
method, then calling the hashCode
method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by
class Object
does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
JavaTM programming language.)
hashCode
in class Object
Object.equals(java.lang.Object)
,
System.identityHashCode(java.lang.Object)
public int describeContents()
Parcelable
Parcelable.writeToParcel(Parcel, int)
,
the return value of this method must include the
Parcelable.CONTENTS_FILE_DESCRIPTOR
bit.describeContents
in interface Parcelable
Parcelable.CONTENTS_FILE_DESCRIPTOR
public void writeToParcel(Parcel out, int flags)
Parcelable
writeToParcel
in interface Parcelable
out
- The Parcel in which the object should be written.flags
- Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE
.public static void writeToParcel(UserHandle h, Parcel out)
readFromParcel(Parcel)
.h
- The UserHandle to be written.out
- The Parcel in which the UserHandle will be placed.readFromParcel(Parcel)
public static UserHandle readFromParcel(Parcel in)
writeToParcel(UserHandle, Parcel)
, returning either
a null or new object as appropriate.in
- The Parcel from which to read the UserHandlewriteToParcel(UserHandle, Parcel)