Alert #

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')

Note that by default alerts on Android can be dismissed by clicking outside of their alert box. To prevent this behavior, you can provide an optional options parameter { cancelable: false } to the Alert method.

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 #

static alert(title, message?, buttons?, options?, type?) #

You can edit the content above on GitHub and send us a pull request!

Examples #

Edit on GitHub

'use strict';

var React = require('react');
var ReactNative = require('react-native');
var {
  Alert,
  StyleSheet,
  Text,
  TouchableHighlight,
  View,
} = ReactNative;

var UIExplorerBlock = require('./UIExplorerBlock');

// corporate ipsum > lorem ipsum
var alertMessage = 'Credibly reintermediate next-generation potentialities after goal-oriented ' +
                   'catalysts for change. Dynamically revolutionize.';

/**
 * Simple alert examples.
 */
class SimpleAlertExampleBlock extends React.Component {
  render() {
    return (
      <View>
        <TouchableHighlight style={styles.wrapper}
          onPress={() => Alert.alert(
            'Alert Title',
            alertMessage,
          )}>
          <View style={styles.button}>
            <Text>Alert with message and default button</Text>
          </View>
        </TouchableHighlight>
        <TouchableHighlight style={styles.wrapper}
          onPress={() => Alert.alert(
            'Alert Title',
            alertMessage,
            [
              {text: 'OK', onPress: () => console.log('OK Pressed!')},
            ]
          )}>
          <View style={styles.button}>
            <Text>Alert with one button</Text>
          </View>
        </TouchableHighlight>
        <TouchableHighlight style={styles.wrapper}
          onPress={() => Alert.alert(
            'Alert Title',
            alertMessage,
            [
              {text: 'Cancel', onPress: () => console.log('Cancel Pressed!')},
              {text: 'OK', onPress: () => console.log('OK Pressed!')},
            ]
          )}>
          <View style={styles.button}>
            <Text>Alert with two buttons</Text>
          </View>
        </TouchableHighlight>
        <TouchableHighlight style={styles.wrapper}
          onPress={() => Alert.alert(
            'Alert Title',
            null,
            [
              {text: 'Foo', onPress: () => console.log('Foo Pressed!')},
              {text: 'Bar', onPress: () => console.log('Bar Pressed!')},
              {text: 'Baz', onPress: () => console.log('Baz Pressed!')},
            ]
          )}>
          <View style={styles.button}>
            <Text>Alert with three buttons</Text>
          </View>
        </TouchableHighlight>
        <TouchableHighlight style={styles.wrapper}
          onPress={() => Alert.alert(
            'Foo Title',
            alertMessage,
            '..............'.split('').map((dot, index) => ({
              text: 'Button ' + index,
              onPress: () => console.log('Pressed ' + index)
            }))
          )}>
          <View style={styles.button}>
            <Text>Alert with too many buttons</Text>
          </View>
        </TouchableHighlight>
        <TouchableHighlight style={styles.wrapper}
          onPress={() => Alert.alert(
            'Alert Title',
            null,
            [
              {text: 'OK', onPress: () => console.log('OK Pressed!')},
            ],
            {
              cancelable: false
            }
          )}>
          <View style={styles.button}>
            <Text>Alert that cannot be dismissed</Text>
          </View>
        </TouchableHighlight>
      </View>
    );
  }
}

class AlertExample extends React.Component {
  static title = 'Alert';

  static description = 'Alerts display a concise and informative message ' +
  'and prompt the user to make a decision.';

  render() {
    return (
      <UIExplorerBlock title={'Alert'}>
        <SimpleAlertExampleBlock />
      </UIExplorerBlock>
    );
  }
}

var styles = StyleSheet.create({
  wrapper: {
    borderRadius: 5,
    marginBottom: 5,
  },
  button: {
    backgroundColor: '#eeeeee',
    padding: 10,
  },
});

module.exports = {
  AlertExample,
  SimpleAlertExampleBlock,
};

Run this example

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The Basics

Guides

Guides (iOS)

Guides (Android)