如何更改本机基本选项卡中选定的选项卡图标颜色? [英] How to change selected tab icon color in native base Tabs?

问题描述

这是 react-native 的一个片段.我需要将选定的选项卡图标颜色更改为 tabBar 下划线颜色.怎么做?我正在尝试编写一个类似于 twitter android 应用程序的标签栏.

const TabBar = () =>{返回 (<Tabs tabBarUnderlineStyle={styles.tabBarUnderline}><标签Heading={<Icon name="home" size={30} color="#B0BEC5"/></TabHeading>}><Tab1/></Tab><标签Heading={<TabHeading style={styles.tabHeading} ><Icon name="search" size={30} color="#B0BEC5"/></TabHeading>}><Tab1/></Tab><标签Heading={<TabHeading style={styles.tabHeading}><Icon name="notifications" size={30} color="#B0BEC5"/></TabHeading>}><Tab1/></Tab><标签Heading={<TabHeading style={styles.tabHeading}><Icon name="email" size={30} color="#B0BEC5"/></TabHeading>}><Tab1/></Tab></Tabs>);};const 样式 = StyleSheet.create({标签标题:{背景颜色:'白色'，},tabBar下划线:{背景颜色:'#29B6F6'，高度:3}});导出默认 TabBar;

解决方案

你只需要这样做

 class TabIcon extends Component {使成为() {var color = this.props.focused ?'#5C6BC0':'#E4E3E3'；返回 (<视图样式={{flex:1, flexDirection:'column', alignItems:'center', alignSelf:'center', justifyContent: 'center'}}><查看><图标名称={this.props.title} size={30} color={color}/>}</查看></查看>);}}类 App 扩展组件 {使成为 () {返回 (<路由器><Scene hideNavBar key="tabbar" type="reset" duration={1} initial={true}><Scene key='main' showLabel={false} tabs={true} activeTintColor="#FF5722" titleStyle={styles.title} tabBarStyle={styles.tabBar} default="tab1"><场景键='tab1'标题='搜索1'组件={home}图标={TabIcon}navBar={elementsHeader}/><场景键='tab2'组件={home}图标={TabIcon}标题='电源睡眠'navBar={elementsHeader}/><场景键='tab3'标题='书'组件={home}图标={TabIcon}navBar={elementsHeader}/><场景键='tab4'标题='设置'组件={home}图标={TabIcon}navBar={elementsHeader}/></场景></场景></路由器>)}}

reference => https://gist.github.com/rturk/858c1afaee170a3a1652>83dae/p>

This is a snippet of react-native. I need to change the selected tabs icon color to tabBar underline color. How to do it? I am trying code a tab bar like on the twitter android app.

const TabBar = () => {
    return (
        <Tabs tabBarUnderlineStyle={styles.tabBarUnderline}>
            <Tab 
            heading={<TabHeading style={styles.tabHeading}>
            <Icon name="home" size={30} color="#B0BEC5" />
            </TabHeading>}
            >
                <Tab1 />
            </Tab>
            <Tab 
            heading={<TabHeading style={styles.tabHeading} ><Icon name="search" size={30} color="#B0BEC5" /></TabHeading>}
            
            >
                <Tab1 />
            </Tab>
            <Tab 
            heading={<TabHeading style={styles.tabHeading}><Icon name="notifications" size={30} color="#B0BEC5" /></TabHeading>}
            >
                <Tab1 />
            </Tab>
            <Tab 
            heading={<TabHeading style={styles.tabHeading}><Icon name="email" size={30} color="#B0BEC5" /></TabHeading>}
            >
                <Tab1 />
            </Tab>
        </Tabs>
    );
};

const styles = StyleSheet.create({
    tabHeading: {
        backgroundColor: 'white',
    },
    tabBarUnderline: {
        backgroundColor: '#29B6F6',
        height: 3
    }
});

export default TabBar;

解决方案

You only need to do something like that

 class TabIcon extends Component {

  render() {

    var color = this.props.focused ? '#5C6BC0' : '#E4E3E3';

    return (
      <View style={{flex:1, flexDirection:'column', alignItems:'center', alignSelf:'center', justifyContent: 'center'}}>
       <View>
         <Icon name={this.props.title} size={30} color={color}  />}
        </View>
      </View>
    );
  }
}


class App extends Component {
    render () {
      return (
        <Router>
        <Scene hideNavBar key="tabbar" type="reset" duration={1} initial={true}>
          <Scene key='main' showLabel={false} tabs={true} activeTintColor="#FF5722" titleStyle={styles.title} tabBarStyle={styles.tabBar} default="tab1">
            <Scene 
              key='tab1'
              title='search1'
              component={home}
              icon={TabIcon} 
              navBar={elementsHeader}
              />
            <Scene 
              key='tab2'
              component={home}
              icon={TabIcon} 
              title='power-sleep'
              navBar={elementsHeader}
              />
            <Scene 
              key='tab3'
              title='book'
              component={home}
              icon={TabIcon} 
              navBar={elementsHeader}
              />
            <Scene 
              key='tab4'
              title='setting'
              component={home}
              icon={TabIcon} 
              navBar={elementsHeader}
              />
          </Scene>
        </Scene>
        </Router>
        )
    }
}

reference => https://gist.github.com/rturk/858c1afaee170a3a141adc7da652883e

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