React-native IT喵喵~路由之React Navigation

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效果

内置的Navigators

react-navigation 包含了下列三种函数赖创建navigators

  • StackNavigator 一次性渲染一个screen, 或者提供screen之间的转换, 当打开一个新的screen会被放到栈顶
  • TabNavigator 渲染一个tab bar 使得用户在screen之间切换
  • DrawerNavigator 提供了一种“抽屉”模型,用在滑入或退出screen中

使用Navigators渲染screen

navigators渲染的应用screen实质上是一个个的React组件
- Screen navigation prop 允许screen分发navigation事件,比如打开另一个screen
- ScreennavigationOptions 用来个性化Screen如何被navigator展现(使用header, title, tab label)

StackNavigator

class MyHomeScreen extends React.Component {
  static navigationOptions = {
    title: 'Home',}

  render() {
    return (
      <Button
        onPress={() => this.props.navigation.navigate('Profile',{name: 'Lucy'})}
        title="Go to Lucy's profile"
      />
    );
  }
}

const ModalStack = StackNavigator({
  Home: {
    screen: MyHomeScreen,},Profile: {
    path: 'people/:name',screen: MyProfileScreen,});

API 定义

StackNavigator(RouteConfigs,StackNavigatorConfig)

RouteConfigs

StackNavigator({

 Profile: {

    //`ProfileScreen`是一个React component组件
 screen: ProfileScreen,// 当`ProfileScreen` 被 StackNavigator加载,他会被默认传递一个 `navigation` 属性.


 path: 'people/:name',// 传递action和路由参数

 // Optional: 覆盖`ProfileScreen`的 `navigationOptions` 
 navigationOptions: ({navigation}) => ({
 title: `${navigation.state.params.name}'s Profile'`,
    }),...MyOtherRoutes,})@H_404_122@;

StackNavigatorConfig

  • initialRouteName 设置默认screen
  • initialRouteParams 初始路由的默认参数
  • navigationOptions 对于所有Screen的默认路由选项
  • paths 覆盖 route configs中设置的path集

TabNavigator

class MyHomeScreen extends React.Component {
  static navigationOptions = {
    tabBarLabel: 'Home',@H_404_122@// Note: By default the icon is only shown on iOS. Search the showIcon option below.
    tabBarIcon: ({ tintColor }) => (
      <Image
        source={require('./chats-icon.png')}
        style={[styles.icon,{tintColor: tintColor}]}
      />
    ),};

  render() {
    return (
      <Button
        onPress={() => this.props.navigation.navigate('Notifications')}
        title="Go to notifications"
      />
    );
  }
}

class MyNotificationsScreen extends React.Component {
  static navigationOptions = {
    tabBarLabel: 'Notifications',tabBarIcon: ({ tintColor }) => (
      <Image
        source={require('./notif-icon.png')}
        style={[styles.icon,};

  render() {
    return (
      <Button
        onPress={() => this.props.navigation.goBack()}
        title="Go back home"
      />
    );
  }
}

const styles = StyleSheet.create({
  icon: {
    width: 26,height: 26,});

const MyApp = TabNavigator({
  Home: {
    screen: MyHomeScreen,Notifications: {
    screen: MyNotificationsScreen,{
  tabBarOptions: {
    activeTintColor: '#e91e63',});
原文链接:https://www.f2er.com/react/303819.html

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