This is documentation for the next SDK version. For up-to-date documentation, see the latest version (SDK 55).
TextField
A SwiftUI TextField component for text input.
For the complete documentation index, see llms.txt. Use this file to discover all available pages.
Expo UI TextField matches the official SwiftUI TextField API and supports single-line and multiline input, keyboard configuration, submit handling, and an imperative ref for programmatic control.
Installation
- npx expo install @expo/uiIf you are installing this in an existing React Native app, make sure to install expo in your project.
Usage
Basic text field
import { useState } from 'react'; import { Host, TextField } from '@expo/ui/swift-ui'; export default function BasicTextFieldExample() { const [value, setValue] = useState(''); return ( <Host matchContents> <TextField placeholder="Username" onValueChange={setValue} /> </Host> ); }
Multiline text field
Set axis="vertical" to allow the text field to expand vertically. Use the lineLimit modifier to control the visible line count. When using Host matchContents, add fixedSize({ horizontal: false, vertical: true }) so the text field accepts the parent's width while using its ideal height.
import { useState } from 'react'; import { Host, TextField } from '@expo/ui/swift-ui'; import { lineLimit, fixedSize } from '@expo/ui/swift-ui/modifiers'; export default function MultilineTextFieldExample() { const [value, setValue] = useState(''); return ( <Host matchContents> <TextField axis="vertical" placeholder="Tell us about yourself..." onValueChange={setValue} modifiers={[lineLimit(5), fixedSize({ horizontal: false, vertical: true })]} /> </Host> ); }
Keyboard type
Use the keyboardType modifier to display a specific keyboard layout.
import { useState } from 'react'; import { Host, TextField } from '@expo/ui/swift-ui'; import { keyboardType, autocorrectionDisabled } from '@expo/ui/swift-ui/modifiers'; export default function KeyboardTypeExample() { const [value, setValue] = useState(''); return ( <Host matchContents> <TextField placeholder="Email" onValueChange={setValue} modifiers={[keyboardType('email-address'), autocorrectionDisabled()]} /> </Host> ); }
Submit handling
Use the submitLabel modifier to customize the return key and onSubmit to handle the submit action.
import { useState } from 'react'; import { Host, TextField } from '@expo/ui/swift-ui'; import { submitLabel, onSubmit } from '@expo/ui/swift-ui/modifiers'; export default function SubmitHandlingExample() { const [value, setValue] = useState(''); return ( <Host matchContents> <TextField placeholder="Search..." onValueChange={setValue} modifiers={[submitLabel('search'), onSubmit(() => console.log('Submitted:', value))]} /> </Host> ); }
Imperative ref
Use a ref to imperatively set text, focus, blur, or select text.
import { useRef } from 'react'; import { Host, TextField, TextFieldRef, Button, HStack, VStack } from '@expo/ui/swift-ui'; import { buttonStyle } from '@expo/ui/swift-ui/modifiers'; export default function ImperativeRefExample() { const ref = useRef<TextFieldRef>(null); return ( <Host matchContents> <VStack> <TextField ref={ref} defaultValue="Select me!" placeholder="Imperative field" /> <HStack spacing={12}> <Button modifiers={[buttonStyle('bordered')]} onPress={() => ref.current?.focus()} label="Focus" /> <Button modifiers={[buttonStyle('bordered')]} onPress={() => ref.current?.blur()} label="Blur" /> <Button modifiers={[buttonStyle('bordered')]} onPress={() => ref.current?.setText('SwiftUI rocks!')} label="Set Text" /> <Button modifiers={[buttonStyle('bordered')]} onPress={() => ref.current?.setSelection(0, 7)} label="Select" /> </HStack> </VStack> </Host> ); }
API
import { TextField } from '@expo/ui/swift-ui';
Component
Type: React.Element<TextFieldProps>
Renders a SwiftUI TextField.
boolean • Default: falseIf true, the text field will be focused automatically when mounted.
string • Default: 'horizontal'The axis along which the text field grows when content exceeds a single line.
'horizontal'— single line (default).'vertical'— expands vertically for multiline content. UselineLimitmodifier to cap visible lines.
Acceptable values are: 'horizontal' | 'vertical'
(focused: boolean) => voidA callback triggered when the field gains or loses focus.
({ start, end }: {
end: number,
start: number
}) => voidA callback triggered when user selects text in the TextField.
(text: string) => voidA callback triggered when the text value changes.
If the callback is marked with the 'worklet' directive, it runs synchronously
on the UI thread; otherwise it is delivered asynchronously as a regular JS event.
Ref<TextFieldRef>ObservableState<string>An observable state that holds the current text.
Create one with useNativeState('') or useNativeState('initial value').
If omitted, the field manages its own internal state.
Types
Can be used for imperatively focusing and selecting text on the TextField component.