react-native-macos/docs/alert.md

---
id: alert
title: Alert
layout: docs
category: APIs
permalink: docs/alert.html
next: alertios
previous: actionsheetios
---

Launches an alert dialog with the specified title and message.

Optionally provide a list of buttons. Tapping any button will fire the
respective onPress callback and dismiss the alert. By default, the only
button will be an 'OK' button.

This is an API that works both on iOS and Android and can show static
alerts. To show an alert that prompts the user to enter some information,
see `AlertIOS`; entering text in an alert is common on iOS only.

## iOS

On iOS you can specify any number of buttons. Each button can optionally
specify a style, which is one of 'default', 'cancel' or 'destructive'.

## Android

On Android at most three buttons can be specified. Android has a concept
of a neutral, negative and a positive button:

  - If you specify one button, it will be the 'positive' one (such as 'OK')
  - Two buttons mean 'negative', 'positive' (such as 'Cancel', 'OK')
  - Three buttons mean 'neutral', 'negative', 'positive' (such as 'Later', 'Cancel', 'OK')

By default alerts on Android can be dismissed by tapping outside of the alert
box. This event can be handled by providing an optional `options` parameter,
with an `onDismiss` callback property `{ onDismiss: () => {} }`.

Alternatively, the dismissing behavior can be disabled altogether by providing
an optional `options` parameter with the `cancelable` property set to `false`
i.e. `{ cancelable: false }`

Example usage:
```
// Works on both iOS and Android
Alert.alert(
  'Alert Title',
  'My Alert Msg',
  [
    {text: 'Ask me later', onPress: () => console.log('Ask me later pressed')},
    {text: 'Cancel', onPress: () => console.log('Cancel Pressed'), style: 'cancel'},
    {text: 'OK', onPress: () => console.log('OK Pressed')},
  ],
  { cancelable: false }
)
```


### Methods

- [`alert`](docs/alert.html#alert)




---

# Reference

## Methods

### `alert()`

```javascript
Alert.alert(title, message?, buttons?, options?, type?)
```