react-native/docs/vibration.md

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---
id: vibration
title: Vibration
layout: docs
category: APIs
permalink: docs/vibration.html
next: vibrationios
previous: toastandroid
---
The Vibration API is exposed at `Vibration.vibrate()`.
The vibration is asynchronous so this method will return immediately.
There will be no effect on devices that do not support Vibration, eg. the simulator.
**Note for Android:**
add `<uses-permission android:name="android.permission.VIBRATE"/>` to `AndroidManifest.xml`
Since the **vibration duration in iOS is not configurable**, so there are some differences with Android.
In Android, if `pattern` is a number, it specified the vibration duration in ms. If `pattern`
is an array, those odd indices is the vibration duration, while the even one are the separation time.
In iOS, invoking `vibrate(duration)` will just ignore the duration and vibrate for a fixed time. While the
`pattern` array is used to define the duration between each vibration. See below example for more.
Repeatable vibration is also supported, the vibration will repeat with defined pattern until `cancel()` is called.
Example:
```
const DURATION = 10000
const PATTERN = [1000, 2000, 3000]
Vibration.vibrate(DURATION)
// Android: vibrate for 10s
// iOS: duration is not configurable, vibrate for fixed time (about 500ms)
Vibration.vibrate(PATTERN)
// Android: wait 1s -> vibrate 2s -> wait 3s
// iOS: wait 1s -> vibrate -> wait 2s -> vibrate -> wait 3s -> vibrate
Vibration.vibrate(PATTERN, true)
// Android: wait 1s -> vibrate 2s -> wait 3s -> wait 1s -> vibrate 2s -> wait 3s -> ...
// iOS: wait 1s -> vibrate -> wait 2s -> vibrate -> wait 3s -> vibrate -> wait 1s -> vibrate -> wait 2s -> vibrate -> wait 3s -> vibrate -> ...
Vibration.cancel()
// Android: vibration stopped
// iOS: vibration stopped
```
### Methods
- [`vibrate`](docs/vibration.html#vibrate)
- [`cancel`](docs/vibration.html#cancel)
---
# Reference
## Methods
### `vibrate()`
```javascript
Vibration.vibrate(pattern: number, Array<number>, repeat: boolean)
```
Trigger a vibration with specified `pattern`.
**Parameters:**
| Name | Type | Required | Description |
| - | - | - | - |
| pattern | number, Array<number> | Yes | Vibration pattern, accept a number or an array of number. Default to 400ms. |
| repeat | boolean | Yes | Optional. Repeat vibration pattern until cancel(), default to false. |
---
### `cancel()`
```javascript
Vibration.cancel()
```
Stop vibration.