Added in [API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Inherited Constants](https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#inhconstants) \| [Fields](https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#lfields) \| [Methods](https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#inhmethods)

# VibratorEnvelopeEffectInfo

*** ** * ** ***


`
public

final

class
VibratorEnvelopeEffectInfo
`


`

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.vibrator.VibratorEnvelopeEffectInfo |

<br />

*** ** * ** ***

Provides information about the vibrator hardware capabilities and limitations regarding
waveform envelope effects. This includes:

- Maximum number of control points supported.
- Minimum and maximum duration for individual segments.
- Maximum total duration for an envelope effect.

This information can be used to help construct waveform envelope effects with
`https://developer.android.com/reference/android/os/VibrationEffect.WaveformEnvelopeBuilder`. When designing these effects, it is also
recommended to check the `https://developer.android.com/reference/android/os/vibrator/VibratorFrequencyProfile` for information about the supported
frequency range and the vibrator's output response.
**See also:**

- `https://developer.android.com/reference/android/os/VibrationEffect.WaveformEnvelopeBuilder`
- `https://developer.android.com/reference/android/os/vibrator/VibratorFrequencyProfile`

## 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/vibrator/VibratorEnvelopeEffectInfo>` | `https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#CREATOR` |

| ### Public methods ||
|---|---|
| ` int` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
| ` boolean` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object o) ` Indicates whether some other object is "equal to" this one. |
| ` long` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#getMaxControlPointDurationMillis()() ` Retrieves the maximum duration supported between two control points within an envelope effect, in milliseconds. |
| ` long` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#getMaxDurationMillis()() ` Retrieves the maximum duration supported for an envelope effect, in milliseconds. |
| ` int` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#getMaxSize()() ` Retrieves the maximum number of control points supported for an envelope effect. |
| ` long` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#getMinControlPointDurationMillis()() ` Retrieves the minimum duration supported between two control points within an envelope effect, in milliseconds. |
| ` int` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#hashCode()() ` Returns a hash code value for the object. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#toString()() ` Returns a string representation of the object. |
| ` void` | ` https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel dest, 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 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

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

<br />

<br />

## 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 `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 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.

<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 /> |

### getMaxControlPointDurationMillis

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

```
public long getMaxControlPointDurationMillis ()
```

Retrieves the maximum duration supported between two control points within an envelope
effect, in milliseconds.

If the device supports envelope effects
(check `https://developer.android.com/reference/android/os/Vibrator#areEnvelopeEffectsSupported()`), this value will be
positive. Devices with envelope effects capabilities guarantee support for durations up to
at least 1 second. If the device does not support envelope effects, this method
will return 0.

<br />

| Returns ||
|---|---|
| `long` | the maximum allowed duration between two control points in an envelope effect, or 0 if envelope effects are not supported. <br /> |

### getMaxDurationMillis

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

```
public long getMaxDurationMillis ()
```

Retrieves the maximum duration supported for an envelope effect, in milliseconds.

If the device supports envelope effects
(check `https://developer.android.com/reference/android/os/Vibrator#areEnvelopeEffectsSupported()`), this value will be
positive. Devices with envelope effects capabilities guarantees a maximum duration
equivalent to the product of `https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#getMaxSize()` and
`https://developer.android.com/reference/android/os/vibrator/VibratorEnvelopeEffectInfo#getMaxControlPointDurationMillis()`. If the device does not support
envelope effects, this method will return 0.

<br />

| Returns ||
|---|---|
| `long` | The maximum duration (in milliseconds) allowed for an envelope effect, or 0 if envelope effects are not supported. <br /> |

### getMaxSize

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

```
public int getMaxSize ()
```

Retrieves the maximum number of control points supported for an envelope effect.

If the device supports envelope effects
(check `https://developer.android.com/reference/android/os/Vibrator#areEnvelopeEffectsSupported()`), this value will be
positive. Devices with envelope effects capabilities guarantee support for a minimum of
16 control points. If the device does not support envelope effects, this method will
return 0.

<br />

| Returns ||
|---|---|
| `int` | the maximum number of control points allowed for an envelope effect, or 0 if envelope effects are not supported. <br /> |

### getMinControlPointDurationMillis

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

```
public long getMinControlPointDurationMillis ()
```

Retrieves the minimum duration supported between two control points within an envelope
effect, in milliseconds.

If the device supports envelope effects
(check `https://developer.android.com/reference/android/os/Vibrator#areEnvelopeEffectsSupported()`), this value will be
positive. Devices with envelope effects capabilities guarantee support for durations down
to at least 20 milliseconds. If the device does not support envelope effects,
this method will return 0.

<br />

| Returns ||
|---|---|
| `long` | the minimum allowed duration between two control points in an envelope effect, or 0 if envelope effects are not supported. <br /> |

### 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
`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 36](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 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.

<br />

| Parameters ||
|---|---|
| `dest` | `Parcel`: 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` |