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 simplest 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 simple example:

import React, { Component } from 'react';
import { AppRegistry, TextInput } from 'react-native';

class UselessTextInput extends Component {
  constructor(props) {
    super(props);
    this.state = { text: 'Useless Placeholder' };
  }

  render() {
    return (
      <TextInput
        style={{height: 40, borderColor: 'gray', borderWidth: 1}}
        onChangeText={(text) => this.setState({text})}
        value={this.state.text}
      />
    );
  }
}

// App registration and rendering
AppRegistry.registerComponent('AwesomeProject', () => UselessTextInput);

Note that some props are only available with multiline={true/false}. Additionally, border styles that apply to only one side of the element (e.g., borderBottomColor, borderLeftWidth, etc.) will not be applied if multiline=false. To achieve the same effect, you can wrap your TextInput in a View:

import React, { Component } from 'react';
import { AppRegistry, View, TextInput } from 'react-native';

class UselessTextInput extends Component {
  render() {
    return (
      <TextInput
        {...this.props} // Inherit any props passed to it; e.g., multiline, numberOfLines below
        editable = {true}
        maxLength = {40}
      />
    );
  }
}

class UselessTextInputMultiline extends Component {
  constructor(props) {
    super(props);
    this.state = {
      text: 'Useless Multiline Placeholder',
    };
  }

  // If you type something in the text box that is a color, the background will change to that
  // color.
  render() {
    return (
     <View style={{
       backgroundColor: this.state.text,
       borderBottomColor: '#000000',
       borderBottomWidth: 1 }}
     >
       <UselessTextInput
         multiline = {true}
         numberOfLines = {4}
         onChangeText={(text) => this.setState({text})}
         value={this.state.text}
       />
     </View>
    );
  }
}

// App registration and rendering
AppRegistry.registerComponent(
 'AwesomeProject',
 () => UselessTextInputMultiline
);

TextInput has by default a border at the bottom of its view. This border has its padding set by the background image provided by the system, and it cannot be changed. Solutions to avoid this is to either not set height explicitly, case in which the system will take care of displaying the border in the correct position, or to not display the border by setting underlineColorAndroid to transparent.

Note that on Android performing text selection in input can change app's activity windowSoftInputMode param to adjustResize. This may cause issues with components that have position: 'absolute' while keyboard is active. To avoid this behavior either specify windowSoftInputMode in AndroidManifest.xml ( https://developer.android.com/guide/topics/manifest/activity-element.html ) or control this param programmatically with native code.

Props

View props...

Methods

Reference

Props

`placeholderTextColor`

The text color of the placeholder string.

Type	Required
color	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. The default value is false.

Type	Required
bool	No

`blurOnSubmit`

If true, the text field will blur when submitted. The default value is true for single-line fields and false for multiline fields. Note that for multiline fields, setting blurOnSubmit to true means that pressing return will blur the field and trigger the onSubmitEditing event instead of inserting a newline into the field.

Type	Required
bool	No

`defaultValue`

Provides an initial value that will change when the user starts typing. Useful for simple use-cases where you do not want to deal with listening to events and updating the value prop to keep the controlled state in sync.

Type	Required
node	No

`editable`

If false, text is not editable. The default value is true.

Type	Required
bool	No

`keyboardType`

Determines which keyboard to open, e.g.numeric.

The following values work across platforms:

default
numeric
email-address
phone-pad

Type	Required
enum('default', 'email-address', 'numeric', 'phone-pad', 'ascii-capable', 'numbers-and-punctuation', 'url', 'number-pad', 'name-phone-pad', 'decimal-pad', 'twitter', 'web-search')	No

`maxLength`

Limits the maximum number of characters that can be entered. Use this instead of implementing the logic in JS to avoid flicker.

Type	Required
number	No

`multiline`

If true, the text input can be multiple lines. The 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

`onChangeText`

Callback that is called when the text input's text changes. Changed text is passed as an argument to the callback handler.

Type	Required
function	No

`onContentSizeChange`

Callback that is called when the text input's content size changes. This will be called with { nativeEvent: { contentSize: { width, height } } }.

Only called for multiline text inputs.

Type	Required
function	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

`onSelectionChange`

Callback that is called when the text input selection is changed.

Type	Required
function	No

`onSubmitEditing`

Callback that is called when the text input's submit button is pressed. Invalid if multiline={true} is specified.

Type	Required
function	No

`placeholder`

The string that will be rendered before text input has been entered.

Type	Required
node	No

`autoCorrect`

If false, disables auto-correct. The default value is true.

Type	Required
bool	No

`returnKeyType`

Determines how the return key should look. On Android you can also use returnKeyLabel.

Cross platform

The following values work across platforms:

done
go
next
search
send

Android Only

The following values work on Android only:

none
previous

iOS Only

The following values work on iOS only:

default
emergency-call
google
join
route
yahoo

Type	Required
enum('done', 'go', 'next', 'search', 'send', 'none', 'previous', 'default', 'emergency-call', 'google', 'join', 'route', 'yahoo')	No

`secureTextEntry`

If true, the text input obscures the text entered so that sensitive text like passwords stay secure. The default value is false.

Type	Required
bool	No

`selectTextOnFocus`

If true, all text will automatically be selected on focus.

Type	Required
bool	No

`selection`

The start and end of the text input's selection. Set start and end to the same value to position the cursor.

Type	Required
object: {start: number,end: number}	No

`selectionColor`

The highlight (and cursor on iOS) color of the text input.

Type	Required
color	No

`style`

Styles

Type	Required
Text	No

`value`

The value to show for the text input. TextInput is a controlled component, which means the native value will be forced to match this value prop if provided. For most uses, this works great, but in some cases this may cause flickering - one common cause is preventing edits by keeping value the same. In addition to simply setting the same value, either set editable={false}, or set/update maxLength to prevent unwanted edits without flicker.

Type	Required
string	No

`inlineImageLeft`

If defined, the provided image resource will be rendered on the left.

Type	Required	Platform
string	No	Android

`inlineImagePadding`

Padding between the inline image, if any, and the text input itself.

Type	Required	Platform
number	No	Android

`numberOfLines`

Sets the number of lines for a TextInput. Use it with multiline set to true to be able to fill the lines.

Type	Required	Platform
number	No	Android

`returnKeyLabel`

Sets the return key to the label. Use it instead of returnKeyType.

Type	Required	Platform
string	No	Android

`underlineColorAndroid`

The color of the TextInput underline.

Type	Required	Platform
color	No	Android

`clearButtonMode`

When the clear button should appear on the right side of the text view.

Type	Required	Platform
enum('never', 'while-editing', 'unless-editing', 'always')	No	iOS

`clearTextOnFocus`

If true, clears the text field automatically when editing begins.

Type	Required	Platform
bool	No	iOS

`dataDetectorTypes`

Determines the types of data converted to clickable URLs in the text input. Only valid if multiline={true} and editable={false}. By default no data types are detected.

You can provide one type or an array of many types.

Possible values for dataDetectorTypes are:

'phoneNumber'
'link'
'address'
'calendarEvent'
'none'
'all'

Type	Required	Platform
enum('phoneNumber', 'link', 'address', 'calendarEvent', 'none', 'all'), ,array of enum('phoneNumber', 'link', 'address', 'calendarEvent', 'none', 'all')	No	iOS

`enablesReturnKeyAutomatically`

If true, the keyboard disables the return key when there is no text and automatically enables it when there is text. The default value is false.

Type	Required	Platform
bool	No	iOS

`keyboardAppearance`

Determines the color of the keyboard.

Type	Required	Platform
enum('default', 'light', 'dark')	No	iOS

`onKeyPress`

Callback that is called when a key is pressed. Pressed key value is passed as an argument to the callback handler. Fires before onChange callbacks.

Type	Required	Platform
function	No	iOS

`selectionState`

An instance of DocumentSelectionState, this is some state that is responsible for maintaining selection information for a document.

Some functionality that can be performed with this instance is:

blur()
focus()
update()

You can reference DocumentSelectionState in vendor/document/selection/DocumentSelectionState.js

Type	Required	Platform
DocumentSelectionState	No	iOS

Methods

`isFocused()`

isFocused():

Returns true if the input is currently focused; false otherwise.

`clear()`

clear();

Removes all text from the TextInput.