import { StyleProp, TextStyle, ViewProps } from 'react-native';
export interface PickerProps<T = any> extends ViewProps {
    possibleValues: T[];
    formatValue: (value: T | undefined, index: number) => string;
    disabled?: boolean;
    align?: 'left' | 'center' | 'right';
    /**
     * Selected index, correspoding to `possibleValues`.
     */
    selectedIndex: number;
    /**
     * Callback for when an item is selected. This is called with the following parameters:
     *   - `value`: the value that was selected
     *   - `index`: the index of the selected value
     */
    onValueChange?: (value: T, index: number) => void;
    /**
     * Specifies how to display the selection items when the user taps on the picker:
     *
     *   - 'dropdown': Shows a dropdown anchored to the picker view. This is the default. Not supported in iOS.
     *   - 'dialog': Show a modal dialog.
     */
    mode?: 'dialog' | 'dropdown';
    /**
     * Style to apply to each of the item labels.
     * @platform ios
     */
    itemStyle?: StyleProp<TextStyle>;
    /**
     * Prompt string for this picker, used in dialog mode as the title of the dialog.
     */
    prompt?: string;
    /**
     * Used to locate this view in end-to-end tests.
     */
    testID?: string;
    /**
     * Color of arrow for spinner dropdown in hexadecimal format
     */
    dropdownIconColor?: string;
    /**
     * Color of the picker items.
     */
    itemColor?: string;
}
export default function Picker<T = any>({ possibleValues, formatValue, selectedIndex, onValueChange, disabled, align, mode, prompt, style, itemStyle, itemColor, ...pickerProps }: PickerProps<T>): JSX.Element | null;