# DevicePresenceEvent Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary:[Constants](https://developer.android.com/reference/android/companion/DevicePresenceEvent#constants)\|[Inherited Constants](https://developer.android.com/reference/android/companion/DevicePresenceEvent#inhconstants)\|[Fields](https://developer.android.com/reference/android/companion/DevicePresenceEvent#lfields)\|[Ctors](https://developer.android.com/reference/android/companion/DevicePresenceEvent#pubctors)\|[Methods](https://developer.android.com/reference/android/companion/DevicePresenceEvent#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/companion/DevicePresenceEvent#inhmethods) # DevicePresenceEvent *** ** * ** *** [Kotlin](https://developer.android.com/reference/kotlin/android/companion/DevicePresenceEvent "View this page in Kotlin")\|Java ` public final class DevicePresenceEvent ` ` extends `[Object](https://developer.android.com/reference/java/lang/Object)` `` implements `[Parcelable](https://developer.android.com/reference/android/os/Parcelable)` ` |---|---------------------------------------| | [java.lang.Object](https://developer.android.com/reference/java/lang/Object) || | ↳ | android.companion.DevicePresenceEvent |
*** ** * ** *** Event for observing device presence. **See also:** - [CompanionDeviceManager.startObservingDevicePresence(ObservingDevicePresenceRequest)](https://developer.android.com/reference/android/companion/CompanionDeviceManager#startObservingDevicePresence(android.companion.ObservingDevicePresenceRequest)) - [ObservingDevicePresenceRequest.Builder.setUuid(ParcelUuid)](https://developer.android.com/reference/android/companion/ObservingDevicePresenceRequest.Builder#setUuid(android.os.ParcelUuid)) - [ObservingDevicePresenceRequest.Builder.setAssociationId(int)](https://developer.android.com/reference/android/companion/ObservingDevicePresenceRequest.Builder#setAssociationId(int)) ## Summary | ### Constants || |-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `int` | [EVENT_ASSOCIATION_REMOVED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_ASSOCIATION_REMOVED) A companion app will receives the callback[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))with this event when the[AssociationInfo](https://developer.android.com/reference/android/companion/AssociationInfo)is removed. | | `int` | [EVENT_BLE_APPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BLE_APPEARED) Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event if the device comes into BLE range. | | `int` | [EVENT_BLE_DISAPPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BLE_DISAPPEARED) Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event if the device is no longer in BLE range. | | `int` | [EVENT_BT_CONNECTED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BT_CONNECTED) Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event when the bluetooth device is connected. | | `int` | [EVENT_BT_DISCONNECTED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BT_DISCONNECTED) Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event if the bluetooth device is disconnected. | | `int` | [EVENT_SELF_MANAGED_APPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_SELF_MANAGED_APPEARED) A companion app for a self-managed device will receive the callback[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))if it reports that a device has appeared on its own. | | `int` | [EVENT_SELF_MANAGED_DISAPPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_SELF_MANAGED_DISAPPEARED) A companion app for a self-managed device will receive the callback[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))if it reports that a device has disappeared on its own. | | `int` | [NO_ASSOCIATION](https://developer.android.com/reference/android/companion/DevicePresenceEvent#NO_ASSOCIATION) Indicate observing device presence base on the ParcelUuid but not association id. | | ### Inherited constants | |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | From interface[android.os.Parcelable](https://developer.android.com/reference/android/os/Parcelable) |-------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `int` | [CONTENTS_FILE_DESCRIPTOR](https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR) Descriptor bit used with[describeContents()](https://developer.android.com/reference/android/os/Parcelable#describeContents()): indicates that the Parcelable object's flattened representation includes a file descriptor. | | `int` | [PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE) Flag for use with[writeToParcel(Parcel, int)](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 `[Creator](https://developer.android.com/reference/android/os/Parcelable.Creator)`<`[DevicePresenceEvent](https://developer.android.com/reference/android/companion/DevicePresenceEvent)`>` | [CREATOR](https://developer.android.com/reference/android/companion/DevicePresenceEvent#CREATOR)
| | ### Public constructors || |-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | ` `[DevicePresenceEvent](https://developer.android.com/reference/android/companion/DevicePresenceEvent#DevicePresenceEvent(int,%20int,%20android.os.ParcelUuid))`(int associationId, int event, `[ParcelUuid](https://developer.android.com/reference/android/os/ParcelUuid)` uuid) ` Create a new DevicePresenceEvent. | | ### Public methods || |--------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` int` | ` `[describeContents](https://developer.android.com/reference/android/companion/DevicePresenceEvent#describeContents())`() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. | | ` boolean` | ` `[equals](https://developer.android.com/reference/android/companion/DevicePresenceEvent#equals(java.lang.Object))`(`[Object](https://developer.android.com/reference/java/lang/Object)` o) ` Indicates whether some other object is "equal to" this one. | | ` int` | ` `[getAssociationId](https://developer.android.com/reference/android/companion/DevicePresenceEvent#getAssociationId())`() ` | | ` int` | ` `[getEvent](https://developer.android.com/reference/android/companion/DevicePresenceEvent#getEvent())`() ` | | ` `[ParcelUuid](https://developer.android.com/reference/android/os/ParcelUuid) | ` `[getUuid](https://developer.android.com/reference/android/companion/DevicePresenceEvent#getUuid())`() ` | | ` int` | ` `[hashCode](https://developer.android.com/reference/android/companion/DevicePresenceEvent#hashCode())`() ` Returns a hash code value for the object. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[toString](https://developer.android.com/reference/android/companion/DevicePresenceEvent#toString())`() ` Returns a string representation of the object. | | ` void` | ` `[writeToParcel](https://developer.android.com/reference/android/companion/DevicePresenceEvent#writeToParcel(android.os.Parcel,%20int))`(`[Parcel](https://developer.android.com/reference/android/os/Parcel)` dest, int flags) ` Flatten this object in to a Parcel. | | ### Inherited methods | |-----------------------|---| | From class` `[java.lang.Object](https://developer.android.com/reference/java/lang/Object)` ` |--------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[Object](https://developer.android.com/reference/java/lang/Object) | ` `[clone](https://developer.android.com/reference/java/lang/Object#clone())`() ` Creates and returns a copy of this object. | | ` boolean` | ` `[equals](https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object))`(`[Object](https://developer.android.com/reference/java/lang/Object)` obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` `[finalize](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 `[Class](https://developer.android.com/reference/java/lang/Class)`` | ` `[getClass](https://developer.android.com/reference/java/lang/Object#getClass())`() ` Returns the runtime class of this`Object`. | | ` int` | ` `[hashCode](https://developer.android.com/reference/java/lang/Object#hashCode())`() ` Returns a hash code value for the object. | | ` final void` | ` `[notify](https://developer.android.com/reference/java/lang/Object#notify())`() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` `[notifyAll](https://developer.android.com/reference/java/lang/Object#notifyAll())`() ` Wakes up all threads that are waiting on this object's monitor. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[toString](https://developer.android.com/reference/java/lang/Object#toString())`() ` Returns a string representation of the object. | | ` final void` | ` `[wait](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` | ` `[wait](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` | ` `[wait](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` `[android.os.Parcelable](https://developer.android.com/reference/android/os/Parcelable)` ` |------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` abstract int` | ` `[describeContents](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` | ` `[writeToParcel](https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int))`(`[Parcel](https://developer.android.com/reference/android/os/Parcel)` dest, int flags) ` Flatten this object in to a Parcel. | || ## Constants ### EVENT_ASSOCIATION_REMOVED Added in[version 36.1](https://developer.android.com/topic/libraries/support-library/revisions) ``` public static final int EVENT_ASSOCIATION_REMOVED ``` A companion app will receives the callback[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))with this event when the[AssociationInfo](https://developer.android.com/reference/android/companion/AssociationInfo)is removed.
Constant Value: 6 (0x00000006) ### EVENT_BLE_APPEARED Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final int EVENT_BLE_APPEARED ``` Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event if the device comes into BLE range.
Constant Value: 0 (0x00000000) ### EVENT_BLE_DISAPPEARED Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final int EVENT_BLE_DISAPPEARED ``` Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event if the device is no longer in BLE range.
Constant Value: 1 (0x00000001) ### EVENT_BT_CONNECTED Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final int EVENT_BT_CONNECTED ``` Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event when the bluetooth device is connected.
Constant Value: 2 (0x00000002) ### EVENT_BT_DISCONNECTED Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final int EVENT_BT_DISCONNECTED ``` Companion app receives[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))callback with this event if the bluetooth device is disconnected.
Constant Value: 3 (0x00000003) ### EVENT_SELF_MANAGED_APPEARED Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final int EVENT_SELF_MANAGED_APPEARED ``` A companion app for a self-managed device will receive the callback[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))if it reports that a device has appeared on its own.
Constant Value: 4 (0x00000004) ### EVENT_SELF_MANAGED_DISAPPEARED Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final int EVENT_SELF_MANAGED_DISAPPEARED ``` A companion app for a self-managed device will receive the callback[CompanionDeviceService.onDevicePresenceEvent(DevicePresenceEvent)](https://developer.android.com/reference/android/companion/CompanionDeviceService#onDevicePresenceEvent(android.companion.DevicePresenceEvent))if it reports that a device has disappeared on its own.
Constant Value: 5 (0x00000005) ### NO_ASSOCIATION Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final int NO_ASSOCIATION ``` Indicate observing device presence base on the ParcelUuid but not association id.
Constant Value: -1 (0xffffffff) ## Fields ### CREATOR Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public static final Creator CREATOR ```

## Public constructors ### DevicePresenceEvent Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public DevicePresenceEvent (int associationId, int event, ParcelUuid uuid) ``` Create a new DevicePresenceEvent.
| Parameters || |-----------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `associationId` | `int`
| | `event` | `int`: Value is[EVENT_BLE_APPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BLE_APPEARED),[EVENT_BLE_DISAPPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BLE_DISAPPEARED),[EVENT_BT_CONNECTED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BT_CONNECTED),[EVENT_BT_DISCONNECTED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_BT_DISCONNECTED),[EVENT_SELF_MANAGED_APPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_SELF_MANAGED_APPEARED),[EVENT_SELF_MANAGED_DISAPPEARED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_SELF_MANAGED_DISAPPEARED),[EVENT_ASSOCIATION_REMOVED](https://developer.android.com/reference/android/companion/DevicePresenceEvent#EVENT_ASSOCIATION_REMOVED), android.companion.DevicePresenceEvent.EVENT_SELF_MANAGED_NEARBY, or android.companion.DevicePresenceEvent.EVENT_SELF_MANAGED_NOT_NEARBY
| | `uuid` | `ParcelUuid`: This value may be`null`.
| ## Public methods ### describeContents Added in[API level 36](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[writeToParcel(android.os.Parcel, int)](https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)), the return value of this method must include the[CONTENTS_FILE_DESCRIPTOR](https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR)bit.
| Returns || |-------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `int` | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either`0`or[CONTENTS_FILE_DESCRIPTOR](https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR)
| ### equals Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public boolean equals (Object o) ``` 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.
| Parameters || |-----|-------------------------------------------| | `o` | `Object`: This value may be`null`.
| | Returns || |-----------|-------------------------------------------------------------------------------| | `boolean` | `true`if this object is the same as the obj argument;`false`otherwise.
| ### getAssociationId Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public int getAssociationId () ```

| Returns || |-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `int` | The association id has been used to observe device presence. Caller will receive the valid association id if only if using[ObservingDevicePresenceRequest.Builder.setAssociationId(int)](https://developer.android.com/reference/android/companion/ObservingDevicePresenceRequest.Builder#setAssociationId(int)), otherwise return[NO_ASSOCIATION](https://developer.android.com/reference/android/companion/DevicePresenceEvent#NO_ASSOCIATION).
| **See also:** - [ObservingDevicePresenceRequest.Builder.setAssociationId(int)](https://developer.android.com/reference/android/companion/ObservingDevicePresenceRequest.Builder#setAssociationId(int)) ### getEvent Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public int getEvent () ```

| Returns || |-------|---------------------------------------------| | `int` | Associated companion device's event.
| ### getUuid Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public ParcelUuid getUuid () ```

| Returns || |-----------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [ParcelUuid](https://developer.android.com/reference/android/os/ParcelUuid) | The ParcelUuid has been used to observe device presence. Caller will receive the ParcelUuid if only if using[ObservingDevicePresenceRequest.Builder.setUuid(ParcelUuid)](https://developer.android.com/reference/android/companion/ObservingDevicePresenceRequest.Builder#setUuid(android.os.ParcelUuid)), otherwise return null.
| **See also:** - [ObservingDevicePresenceRequest.Builder.setUuid(ParcelUuid)](https://developer.android.com/reference/android/companion/ObservingDevicePresenceRequest.Builder#setUuid(android.os.ParcelUuid)) ### hashCode Added in[API level 36](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[HashMap](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[equals](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[equals](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.

| Returns || |-------|-------------------------------------------| | `int` | a hash code value for this object.
| ### toString Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public String toString () ``` Returns a string representation of the object.
| Returns || |--------------------------------------------------------------------|-----------------------------------------------| | [String](https://developer.android.com/reference/java/lang/String) | a string representation of the object.
| ### writeToParcel Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) ``` public void writeToParcel (Parcel dest, int flags) ``` Flatten this object in to a Parcel.
| Parameters || |---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `dest` | `Parcel`: This value cannot be`null`.
| | `flags` | `int`: Additional flags about how the object should be written. May be 0 or[Parcelable.PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE). Value is either`0`or a combination of[Parcelable.PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE), and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES
|