import React from 'react';  import { View, Text } from 'react-native'; import Menu, { MenuItem, MenuDivider } from 'react-native-material-menu';  class App extends React.PureComponent {   _menu = null;    setMenuRef = ref => {     this._menu = ref;   };    hideMenu = () => {     this._menu.hide();   };    showMenu = () => {     this._menu.show();   };    render() {     return (       <View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>         <Menu           ref={this.setMenuRef}           button={<Text onPress={this.showMenu}>Show menu</Text>}         >           <MenuItem onPress={this.hideMenu}>Menu item 1</MenuItem>           <MenuItem onPress={this.hideMenu}>Menu item 2</MenuItem>           <MenuItem onPress={this.hideMenu} disabled>             Menu item 3           </MenuItem>           <MenuDivider />           <MenuItem onPress={this.hideMenu}>Menu item 4</MenuItem>         </Menu>       </View>     );   } }  export default App;