Expo

Documentation

Picker

Renders the native picker component on iOS and Android. Example:
<Picker
  selectedValue={this.state.language}
  style={{ height: 50, width: 100 }}
  onValueChange={(itemValue, itemIndex) => this.setState({ language: itemValue })}>
  <Picker.Item label="Java" value="java" />
  <Picker.Item label="JavaScript" value="js" />
</Picker>

Props

Reference

Props

onValueChange

Callback for when an item is selected. This is called with the following parameters:
  • itemValue: the value prop of the item that was selected
  • itemPosition: the index of the selected item in this picker
TypeRequired
functionNo

selectedValue

Value matching value of one of the items. Can be a string or an integer.
TypeRequired
anyNo

style

TypeRequired
pickerStyleTypeNo

testID

Used to locate this view in end-to-end tests.
TypeRequired
stringNo

enabled

If set to false, the picker will be disabled, i.e. the user will not be able to make a selection.
TypeRequiredPlatform
boolNoAndroid

mode

On Android, specifies how to display the selection items when the user taps on the picker:
  • 'dialog': Show a modal dialog. This is the default.
  • 'dropdown': Shows a dropdown anchored to the picker view
TypeRequiredPlatform
enum('dialog', 'dropdown')NoAndroid

prompt

Prompt string for this picker, used on Android in dialog mode as the title of the dialog.
TypeRequiredPlatform
stringNoAndroid

itemStyle

Style to apply to each of the item labels.
TypeRequiredPlatform
text stylesNoiOS