Added in [API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Nested Classes](https://developer.android.com/reference/android/service/autofill/FillEventHistory#nestedclasses) \| [Inherited Constants](https://developer.android.com/reference/android/service/autofill/FillEventHistory#inhconstants) \| [Fields](https://developer.android.com/reference/android/service/autofill/FillEventHistory#lfields) \| [Methods](https://developer.android.com/reference/android/service/autofill/FillEventHistory#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/service/autofill/FillEventHistory#inhmethods)

# FillEventHistory

*** ** * ** ***

` public final class FillEventHistory `   
` 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.service.autofill.FillEventHistory |

<br />

*** ** * ** ***

Describes what happened after the last `https://developer.android.com/reference/android/service/autofill/AutofillService#onFillRequest(android.service.autofill.FillRequest,%20android.os.CancellationSignal,%20android.service.autofill.FillCallback)` call.

This history is typically used to keep track of previous user actions to optimize further requests. For example, the service might return email addresses in alphabetical order by default, but change that order based on the address the user picked on previous requests.

The history is not persisted over reboots, and it's cleared every time the service replies to a `https://developer.android.com/reference/android/service/autofill/AutofillService#onFillRequest(android.service.autofill.FillRequest,%20android.os.CancellationSignal,%20android.service.autofill.FillCallback)` by calling `https://developer.android.com/reference/android/service/autofill/FillCallback#onSuccess(android.service.autofill.FillResponse)` or `https://developer.android.com/reference/android/service/autofill/FillCallback#onFailure(java.lang.CharSequence)` (if the service doesn't call any of these methods, the history will clear out after some pre-defined time).

## Summary

| ### Nested classes ||
|---|---|
| ` class` | `https://developer.android.com/reference/android/service/autofill/FillEventHistory.Event` Description of an event that occurred after the latest call to `https://developer.android.com/reference/android/service/autofill/FillCallback#onSuccess(android.service.autofill.FillResponse)`. |

### 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/service/autofill/FillEventHistory>` | `https://developer.android.com/reference/android/service/autofill/FillEventHistory#CREATOR` <br /> |

| ### Public methods ||
|---|---|
| ` int` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
| ` boolean` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object o) ` Indicates whether some other object is "equal to" this one. |
| ` https://developer.android.com/reference/android/os/Bundle` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#getClientState()() ` *This method was deprecated in API level 28. use `https://developer.android.com/reference/android/service/autofill/FillEventHistory#getEvents()` then `https://developer.android.com/reference/android/service/autofill/FillEventHistory.Event#getClientState()` instead.* |
| ` https://developer.android.com/reference/java/util/List<https://developer.android.com/reference/android/service/autofill/FillEventHistory.Event>` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#getEvents()() ` Returns the events occurred after the latest call to `https://developer.android.com/reference/android/service/autofill/FillCallback#onSuccess(android.service.autofill.FillResponse)`. |
| ` int` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#getSessionId()() ` Returns the unique identifier of this FillEventHistory. |
| ` int` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#hashCode()() ` Returns a hash code value for the object. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#toString()() ` Returns a string representation of the object. |
| ` void` | ` https://developer.android.com/reference/android/service/autofill/FillEventHistory#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel parcel, 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 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

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

<br />

<br />

## Public methods

### describeContents

Added in [API level 26](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 26](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.

<br />

| Parameters ||
|---|---|
| `o` | `Object`: the reference object with which to compare. <br /> |

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

### getClientState

Added in [API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)   
Deprecated in [API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Bundle getClientState ()
```

<br />

**This method was deprecated in API level 28.**   

use `https://developer.android.com/reference/android/service/autofill/FillEventHistory#getEvents()` then `https://developer.android.com/reference/android/service/autofill/FillEventHistory.Event#getClientState()` instead.

Returns the client state set in the previous `https://developer.android.com/reference/android/service/autofill/FillResponse`.

**Note:** the state is associated with the app that was autofilled in the previous `https://developer.android.com/reference/android/service/autofill/AutofillService#onFillRequest(android.service.autofill.FillRequest,%20android.os.CancellationSignal,%20android.service.autofill.FillCallback)` , which is not necessary the same app being autofilled now.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/os/Bundle` | This value may be `null`. <br /> |

### getEvents

Added in [API level 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public List<FillEventHistory.Event> getEvents ()
```

Returns the events occurred after the latest call to `https://developer.android.com/reference/android/service/autofill/FillCallback#onSuccess(android.service.autofill.FillResponse)`.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/util/List<https://developer.android.com/reference/android/service/autofill/FillEventHistory.Event>` | The list of events or `null` if non occurred. <br /> |

### getSessionId

Added in [API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public int getSessionId ()
```

Returns the unique identifier of this FillEventHistory.

This is used to differentiate individual FillEventHistory.

<br />

| Returns ||
|---|---|
| `int` | <br /> |

### hashCode

Added in [API level 26](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 /> |

### toString

Added in [API level 26](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 26](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

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

Flatten this object in to a Parcel.

<br />

| Parameters ||
|---|---|
| `parcel` | `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` |