Question

有没有办法让菜单从左到右而不是从右到左？当从导航栏的右键单击时，它没关系; 而不是从左侧按钮，它被渲染出屏幕。

Answer 1

以下是如何使用带有react-navigation的弹出菜单的简短示例。该菜单在headerRight和headerLeft占位符中呈现。它在两侧都能正确显示：

import React from 'react';
import { AppRegistry, Text } from 'react-native';
import { StackNavigator } from 'react-navigation';
import Menu, {
  MenuContext,
  MenuOptions,
  MenuOption,
  MenuTrigger
} from 'react-native-popup-menu';

const NavigatorMenu = ({ navigation }) => (
  <Menu>
    <MenuTrigger text='...' />
    <MenuOptions>
      <MenuOption
        onSelect={() => navigation.navigate('Page2')}
        text='Navigate Page 2'
      />
      <MenuOption
        onSelect={() => navigation.navigate('Page3')}
        text='Navigate Page 3'
      />
    </MenuOptions>
  </Menu>
);

class Home extends React.Component {
  static navigationOptions = ({ navigation }) => ({
    title: 'Home',
    headerRight: <NavigatorMenu navigation={navigation} />,
    headerLeft: <NavigatorMenu navigation={navigation} />,
  });
  render() {
    return <Text>Home Page</Text>;
  }
}

const Page2 = () => <Text>2nd Page</Text>;
const Page3 = () => <Text>3rd Page</Text>;

const TopStackNavigator = StackNavigator({
  Home: { screen: Home },
  Page2: { screen: Page2 },
  Page3: { screen: Page3 },
});

const App = () => (
  <MenuContext>
    <TopStackNavigator />
  </MenuContext>
);

AppRegistry.registerComponent('examples', () => App);

它在Android上测试过：

react-native：0.37.0
react-native-popup-menu：0.7.3
react-navigation：1.0.0-beta

Answer 2

解决。在测试期间，我正在混合react-native-menu和react-native-popup-menu。我已经安装了。 Webstorm让我把两个图书馆的进口混合起来。

从导航栏的左侧按钮单击菜单

2 个答案: