TextInput
A foundational component for inputting text into the app via a keyboard. Props provide configurability for several features, such as auto- correction, auto-capitalization, placeholder text, and different keyboard types, such as a numeric keypad.
The most basic use case is to plop down a TextInput and subscribe to the onChangeText events to read the user input. There are also other events, such as onSubmitEditing and onFocus that can be subscribed to. A minimal example:
<View>
<TextInput
style={{height: 40, borderColor: 'gray', borderWidth: 1}}
onChangeText={(text) => this.setState({input: text})}
/>
<Text>{'user input: ' + this.state.input}</Text>
</View>
The value prop can be used to set the value of the input in order to make the state of the component clear, but value once is like setting the default value, but you can change it continuously based on onChangeText events as well. If you really want to force the component to always revert to the value you are setting, you can set controlled={true}.
The multiline prop is not supported in all releases, and some props are multiline only.
Props
onChangeTextautoCapitalizeautoFocusbufferDelayclearButtonModeclearTextOnFocuscontrollededitableenablesReturnKeyAutomaticallykeyboardTypemultilineonBluronChangeautoCorrectonEndEditingonFocusonLayoutonSubmitEditingpasswordplaceholderplaceholderTextColorreturnKeyTypeselectTextOnFocusselectionStatestyletestIDvalue
Methods
Reference
Props
onChangeText
| Type | Required |
|---|---|
| function | No |
autoCapitalize
Can tell TextInput to automatically capitalize certain characters.
- characters: all characters,
- words: first letter of each word
- sentences: first letter of each sentence (default)
- none: don't auto capitalize anything
| Type | Required |
|---|---|
| enum('none', 'sentences', 'words', 'characters') | No |
autoFocus
If true, focuses the input on componentDidMount. Default value is false.
| Type | Required |
|---|---|
| bool | No |
bufferDelay
This helps avoid drops characters due to race conditions between JS and the native text input. The default should be fine, but if you're potentially doing very slow operations on every keystroke then you may want to try increasing this.
| Type | Required |
|---|---|
| number | No |
clearButtonMode
When the clear button should appear on the right side of the text view
| Type | Required |
|---|---|
| enum('never', 'while-editing', 'unless-editing', 'always') | No |
clearTextOnFocus
If true, clears the text field automatically when editing begins
| Type | Required |
|---|---|
| bool | No |
controlled
If you really want this to behave as a controlled component, you can set this true, but you will probably see flickering, dropped keystrokes, and/or laggy typing, depending on how you process onChange events.
| Type | Required |
|---|---|
| bool | No |
editable
If false, text is not editable. Default value is true.
| Type | Required |
|---|---|
| bool | No |
enablesReturnKeyAutomatically
If true, the keyboard disables the return key when there is no text and automatically enables it when there is text. Default value is false.
| Type | Required |
|---|---|
| bool | No |
keyboardType
Determines which keyboard to open, e.g.numeric.
| Type | Required |
|---|---|
| enum('default', 'ascii-capable', 'numbers-and-punctuation', 'url', 'number-pad', 'phone-pad', 'name-phone-pad', 'decimal-pad', 'twitter', 'web-search', 'numeric', 'email-address') | No |
multiline
If true, the text input can be multiple lines. Default value is false.
| Type | Required |
|---|---|
| bool | No |
onBlur
Callback that is called when the text input is blurred
| Type | Required |
|---|---|
| function | No |
onChange
Callback that is called when the text input's text changes.
| Type | Required |
|---|---|
| function | No |
autoCorrect
If false, disables auto-correct. Default value is true.
| Type | Required |
|---|---|
| bool | No |
onEndEditing
Callback that is called when text input ends.
| Type | Required |
|---|---|
| function | No |
onFocus
Callback that is called when the text input is focused
| Type | Required |
|---|---|
| function | No |
onLayout
Invoked on mount and layout changes with {x, y, width, height}.
| Type | Required |
|---|---|
| function | No |
onSubmitEditing
Callback that is called when the text input's submit button is pressed.
| Type | Required |
|---|---|
| function | No |
password
If true, the text input obscures the text entered so that sensitive text like passwords stay secure. Default value is false.
| Type | Required |
|---|---|
| bool | No |
placeholder
The string that will be rendered before text input has been entered
| Type | Required |
|---|---|
| string | No |
placeholderTextColor
The text color of the placeholder string
| Type | Required |
|---|---|
| string | No |
returnKeyType
Determines how the return key should look.
| Type | Required |
|---|---|
| enum('default', 'go', 'google', 'join', 'next', 'route', 'search', 'send', 'yahoo', 'done', 'emergency-call') | No |
selectTextOnFocus
If true, selected the text automatically when editing begins
| Type | Required |
|---|---|
| bool | No |
selectionState
See DocumentSelectionState.js, some state that is responsible for maintaining selection information for a document
| Type | Required |
|---|---|
| DocumentSelectionState | No |
style
Styles
| Type | Required |
|---|---|
| Text | No |
testID
Used to locate this view in end-to-end tests.
| Type | Required |
|---|---|
| string | No |
value
The default value for the text input
| Type | Required |
|---|---|
| string | No |
Methods
isFocused()
isFocused():