Expo Docs

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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>


Reference

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

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

TypeRequired
pickerStyleTypeNo

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

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

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

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