import { IonicNativePlugin } from '@ionic-native/core';
export declare class NavigationBarColor extends IonicNativePlugin {
    /**
     * Whether the NavigationBarColor is currently visible or not.
     */
    isVisible: boolean;
    /**
     * This function changes the color of the android navigation bar
     * @param hexString  Color of navigation bar in hex string format, default value #000000
     * @param lightNavigationBar  Change the color of the buttons in the navigation bar to black,
     * use in light colors of the navigation bar (Android 8.0 or higher).
     * @return void Nothing is returned
     */
    backgroundColorByHexString(hexString: string, lightNavigationBar: boolean): Promise<any>;
    /**
     * This function changes the color of the android navigation bar
     * @param colorName  Color of navigation bar by color name string format
     * @param lightNavigationBar Change the color of the buttons in the navigation bar to black,
     * use in light colors of the navigation bar (Android 8.0 or higher).
     * @return void Nothing is returned
     */
    backgroundColorByName(colorName: string, lightNavigationBar: boolean): Promise<any>;
    /**
     * This function show the android navigation bar
     * @return void Nothing is returned
     */
    show(): void;
    /**
     * This function hides the android navigation bar
     * @return void Nothing is returned
     */
    hide(): void;
}