Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Inherited Constants](https://developer.android.com/reference/android/os/UserHandle#inhconstants) \| [Fields](https://developer.android.com/reference/android/os/UserHandle#lfields) \| [Ctors](https://developer.android.com/reference/android/os/UserHandle#pubctors) \| [Methods](https://developer.android.com/reference/android/os/UserHandle#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/os/UserHandle#inhmethods)

# UserHandle

*** ** * ** ***

[Kotlin](https://developer.android.com/reference/kotlin/android/os/UserHandle "View this page in Kotlin") \|Java


`
public

final

class
UserHandle
`


`

extends https://developer.android.com/reference/java/lang/Object


`

`


implements

https://developer.android.com/reference/android/os/Parcelable


`

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.os.UserHandle |

<br />

*** ** * ** ***

Representation of a user on the device.

## Summary

| ### Inherited constants |
|---|
| From interface `https://developer.android.com/reference/android/os/Parcelable` |---|---| | `int` | `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` Descriptor bit used with `https://developer.android.com/reference/android/os/Parcelable#describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor. | | `int` | `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE` Flag for use with `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`: the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`". | |

| ### Fields ||
|---|---|
| ` public static final https://developer.android.com/reference/android/os/Parcelable.Creator<https://developer.android.com/reference/android/os/UserHandle>` | `https://developer.android.com/reference/android/os/UserHandle#CREATOR` |

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/android/os/UserHandle#UserHandle(android.os.Parcel)(https://developer.android.com/reference/android/os/Parcel in) ` Instantiate a new UserHandle from the data in a Parcel that was previously written with `https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.Parcel,%20int)`. |

| ### Public methods ||
|---|---|
| ` int` | ` https://developer.android.com/reference/android/os/UserHandle#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
| ` boolean` | ` https://developer.android.com/reference/android/os/UserHandle#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) ` Indicates whether some other object is "equal to" this one. |
| ` static https://developer.android.com/reference/android/os/UserHandle` | ` https://developer.android.com/reference/android/os/UserHandle#getUserHandleForUid(int)(int uid) ` Returns the user for a given uid. |
| ` int` | ` https://developer.android.com/reference/android/os/UserHandle#hashCode()() ` Returns a hash code value for the object. |
| ` static https://developer.android.com/reference/android/os/UserHandle` | ` https://developer.android.com/reference/android/os/UserHandle#readFromParcel(android.os.Parcel)(https://developer.android.com/reference/android/os/Parcel in) ` Read a UserHandle from a Parcel that was previously written with `https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.UserHandle,%20android.os.Parcel)`, returning either a null or new object as appropriate. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/os/UserHandle#toString()() ` Returns a string representation of the object. |
| ` static void` | ` https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.UserHandle,%20android.os.Parcel)(https://developer.android.com/reference/android/os/UserHandle h, https://developer.android.com/reference/android/os/Parcel out) ` Write a UserHandle to a Parcel, handling null pointers. |
| ` void` | ` https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel out, int flags) ` Flatten this object in to a Parcel. |

| ### Inherited methods |
|---|---|
| From class ` https://developer.android.com/reference/java/lang/Object ` |---|---| | ` https://developer.android.com/reference/java/lang/Object` | ` https://developer.android.com/reference/java/lang/Object#clone()() ` Creates and returns a copy of this object. | | ` boolean` | ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` https://developer.android.com/reference/java/lang/Object#finalize()() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final https://developer.android.com/reference/java/lang/Class<?>` | ` https://developer.android.com/reference/java/lang/Object#getClass()() ` Returns the runtime class of this `Object`. | | ` int` | ` https://developer.android.com/reference/java/lang/Object#hashCode()() ` Returns a hash code value for the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notify()() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notifyAll()() ` Wakes up all threads that are waiting on this object's monitor. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Object#toString()() ` Returns a string representation of the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait()() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||
| From interface ` https://developer.android.com/reference/android/os/Parcelable ` |---|---| | ` abstract int` | ` https://developer.android.com/reference/android/os/Parcelable#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. | | ` abstract void` | ` https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel dest, int flags) ` Flatten this object in to a Parcel. | ||

## Fields

### CREATOR

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static final Creator<UserHandle> CREATOR
```

<br />

<br />

## Public constructors

### UserHandle

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public UserHandle (Parcel in)
```

Instantiate a new UserHandle from the data in a Parcel that was
previously written with `https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.Parcel,%20int)`. Note that you
must not use this with data written by
`https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.UserHandle,%20android.os.Parcel)` since it is not possible
to handle a null UserHandle here.

<br />

| Parameters ||
|---|---|
| `in` | `Parcel`: The Parcel containing the previously written UserHandle, positioned at the location in the buffer where it was written. <br /> |

## Public methods

### describeContents

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public int describeContents ()
```

Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`,
the return value of this method must include the
`https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` bit.

<br />

| Returns ||
|---|---|
| `int` | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or - `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` |

### equals

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public boolean equals (Object obj)
```

Indicates whether some other object is "equal to" this one.


The `equals` method implements an equivalence relation
on non-null object references:

- It is *reflexive*: for any non-null reference value `x`, `x.equals(x)` should return `true`.
- It is *symmetric*: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`.
- It is *transitive*: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`.
- It is *consistent*: for any non-null reference values `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.
- For any non-null reference value `x`, `x.equals(null)` should return `false`.


An equivalence relation partitions the elements it operates on
into *equivalence classes*; all the members of an
equivalence class are equal to each other. Members of an
equivalence class are substitutable for each other, at least
for some purposes.

<br />

| Parameters ||
|---|---|
| `obj` | `Object`: This value may be `null`. <br /> |

| Returns ||
|---|---|
| `boolean` | `true` if this object is the same as the obj argument; `false` otherwise. <br /> |

### getUserHandleForUid

Added in [API level 24](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static UserHandle getUserHandleForUid (int uid)
```

Returns the user for a given uid.

<br />

| Parameters ||
|---|---|
| `uid` | `int`: A uid for an application running in a particular user. <br /> |

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/os/UserHandle` | A `https://developer.android.com/reference/android/os/UserHandle` for that user. <br /> |

### hashCode

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public int hashCode ()
```

Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
`https://developer.android.com/reference/java/util/HashMap`.


The general contract of `hashCode` is:

- Whenever it is invoked on the same object more than once during an execution of a Java application, the `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.
- If two objects are equal according to the `https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)` method, then calling the `hashCode` method on each of the two objects must produce the same integer result.
- It is *not* required that if two objects are unequal according to the `https://developer.android.com/reference/java/lang/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.

<br />

<br />

| Returns ||
|---|---|
| `int` | a hash code value for this object. <br /> |

### readFromParcel

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static UserHandle readFromParcel (Parcel in)
```

Read a UserHandle from a Parcel that was previously written
with `https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.UserHandle,%20android.os.Parcel)`, returning either
a null or new object as appropriate.

<br />

| Parameters ||
|---|---|
| `in` | `Parcel`: The Parcel from which to read the UserHandle <br /> |

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/os/UserHandle` | Returns a new UserHandle matching the previously written object, or null if a null had been written. <br /> |

**See also:**

- `https://developer.android.com/reference/android/os/UserHandle#writeToParcel(android.os.UserHandle,%20android.os.Parcel)`

### toString

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public String toString ()
```

Returns a string representation of the object.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/String` | a string representation of the object. <br /> |

### writeToParcel

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static void writeToParcel (UserHandle h, 
                Parcel out)
```

Write a UserHandle to a Parcel, handling null pointers. Must be
read with `https://developer.android.com/reference/android/os/UserHandle#readFromParcel(android.os.Parcel)`.

<br />

| Parameters ||
|---|---|
| `h` | `UserHandle`: The UserHandle to be written. <br /> |
| `out` | `Parcel`: The Parcel in which the UserHandle will be placed. <br /> |

**See also:**

- `https://developer.android.com/reference/android/os/UserHandle#readFromParcel(android.os.Parcel)`

### writeToParcel

Added in [API level 17](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public void writeToParcel (Parcel out, 
                int flags)
```

Flatten this object in to a Parcel.

<br />

| Parameters ||
|---|---|
| `out` | `Parcel`: The Parcel in which the object should be written. This value cannot be `null`. <br /> |
| `flags` | `int`: Additional flags about how the object should be written. May be 0 or `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of the following: - `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE` |