/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict-local
* @format
*/
import type {RNTesterModule} from '../../types/RNTesterTypes';
import RNTesterText from '../../components/RNTesterText';
import * as React from 'react';
import {useState} from 'react';
import {Alert, Pressable, StyleSheet, Text, View} from 'react-native';
// Shows log on the screen
const Log = ({message}: {message: string}) =>
message ? (
Log: {message}
) : null;
/**
* Simple alert examples.
*/
const AlertWithDefaultButton = () => {
const alertMessage = 'An external USB drive has been detected!';
return (
Alert.alert('Alert', alertMessage)}>
Tap to view alert
);
};
const AlertWithTwoButtons = () => {
const [message, setMessage] = useState('');
const alertMessage = 'Your subscription has expired!';
return (
Alert.alert('Action Required!', alertMessage, [
{text: 'Ignore', onPress: () => setMessage('Ignore Pressed!')},
{text: 'Renew', onPress: () => setMessage('Renew Pressed!')},
])
}>
Tap to view alert
);
};
const AlertWithThreeButtons = () => {
const [message, setMessage] = useState('');
const alertMessage = 'Do you want to save your changes?';
return (
Alert.alert('Unsaved Changes!', alertMessage, [
{text: 'Cancel', onPress: () => setMessage('Cancel Pressed!')},
{text: 'No', onPress: () => setMessage('No Pressed!')},
{text: 'Yes', onPress: () => setMessage('Yes Pressed!')},
])
}>
Tap to view alert
);
};
const AlertWithManyButtons = () => {
const [message, setMessage] = useState('');
const alertMessage =
'Credibly reintermediate next-generation potentialities after goal-oriented ' +
'catalysts for change. Dynamically revolutionize.';
return (
Alert.alert(
'Foo Title',
alertMessage,
'..............'.split('').map((dot, index) => ({
text: 'Button ' + index,
onPress: () => setMessage(`Button ${index} Pressed!`),
})),
)
}>
Tap to view alert
);
};
const AlertWithCancelableTrue = () => {
const [message, setMessage] = useState('');
const alertMessage = 'Tapping outside this dialog will dismiss this alert.';
return (
Alert.alert(
'Alert Title',
alertMessage,
[{text: 'OK', onPress: () => setMessage('OK Pressed!')}],
{
cancelable: true,
onDismiss: () =>
setMessage(
'This alert was dismissed by tapping outside of the alert dialog.',
),
},
)
}>
Tap to view alert
);
};
const AlertWithStyles = () => {
const [message, setMessage] = useState('');
const alertMessage = 'Look at the button styles!';
return (
Alert.alert('Styled Buttons!', alertMessage, [
{
text: 'Default',
onPress: () => setMessage('Default Pressed!'),
style: 'default',
},
{
text: 'Cancel',
onPress: () => setMessage('Cancel Pressed!'),
style: 'cancel',
},
{
text: 'Destructive',
onPress: () => setMessage('Destructive Pressed!'),
style: 'destructive',
},
])
}>
Tap to view alert
);
};
const AlertWithStylesPreferred = () => {
const [message, setMessage] = useState('');
const alertMessage =
"The Preferred button is styled with 'preferred', so it is emphasized over the cancel button.";
return (
Alert.alert('Foo Title', alertMessage, [
{
text: 'Preferred',
isPreferred: true,
onPress: () => setMessage('Preferred Pressed!'),
},
{
text: 'Cancel',
style: 'cancel',
onPress: () => setMessage('Cancel Pressed!'),
},
])
}>
Tap to view alert
);
};
const PromptOptions = () => {
const [promptValue, setPromptValue] = useState<
string | {login: string, password: string},
>('');
const customButtons = [
{
text: 'Custom OK',
onPress: setPromptValue,
},
{
text: 'Custom Cancel',
style: 'cancel',
},
];
return (
Prompt value:
{JSON.stringify(promptValue, null, 2)}
Alert.prompt('Type a value', null, setPromptValue)}>
prompt with title & callback
Alert.prompt('Type a value', null, customButtons)}>
prompt with title & custom buttons
Alert.prompt(
'Type a phone number',
null,
null,
'plain-text',
undefined,
'phone-pad',
)
}>
prompt with title & custom keyboard
Alert.prompt(
'Type a value',
null,
setPromptValue,
undefined,
'Default value',
)
}>
prompt with title, callback & default value
Alert.prompt(
'Type a value',
null,
/* $FlowFixMe[incompatible-type] Natural Inference rollout. See
* https://fburl.com/workplace/6291gfvu */
customButtons,
'login-password',
'admin@site.com',
)
}>
prompt with title, custom buttons, login/password & default value
);
};
const PromptTypes = () => {
return (
Alert.prompt('Plain Text Entry')}>
plain-text
Alert.prompt('Secure Text', null, null, 'secure-text')}>
secure-text
Alert.prompt('Login & Password', null, null, 'login-password')
}>
login-password
);
};
const styles = StyleSheet.create({
wrapper: {
borderRadius: 5,
marginBottom: 5,
},
button: {
backgroundColor: '#eeeeee',
padding: 10,
},
logContainer: {
paddingVertical: 8,
paddingHorizontal: 5,
},
bold: {
fontWeight: 'bold',
},
promptValue: {
marginBottom: 10,
},
});
export const examples = [
{
title: 'Alert with default Button',
description:
"It can be used to show some information to user that doesn't require an action.",
render(): React.Node {
return ;
},
},
{
title: 'Alert with two Buttons',
description: 'It can be used when an action is required from the user.',
render(): React.Node {
return ;
},
},
{
title: 'Alert with three Buttons',
description: 'It can be used when there are three possible actions',
render(): React.Node {
return ;
},
},
{
title: 'Alert with many Buttons',
platform: 'ios',
description: 'It can be used when more than three actions are required.',
render(): React.Node {
return ;
},
},
{
title: 'Alert with cancelable={true}',
platform: 'android',
description:
'By passing cancelable={false} prop to alerts on Android, they can be dismissed by tapping outside of the alert box.',
render(): React.Node {
return ;
},
},
{
title: 'Alert with styles',
platform: 'ios',
description:
"Alert buttons can be styled. There are three button styles - 'default' | 'cancel' | 'destructive'.",
render(): React.Node {
return ;
},
},
{
title: 'Alert with styles + preferred',
platform: 'ios',
description:
"Alert buttons with 'isPreferred' will be emphasized, even over cancel buttons",
render(): React.Node {
return ;
},
},
{
title: 'Prompt Options',
platform: 'ios',
render(): React.Node {
return ;
},
},
{
title: 'Prompt Types',
platform: 'ios',
render(): React.Node {
return ;
},
},
];
export default ({
framework: 'React',
title: 'Alerts',
category: 'UI',
documentationURL: 'https://reactnative.dev/docs/alert',
description:
'Alerts display a concise and informative message and prompt the user to make a decision.',
/* $FlowFixMe[incompatible-type] Natural Inference rollout. See
* https://fburl.com/workplace/6291gfvu */
examples,
}: RNTesterModule);