TabNavigator extra padding

问题

How to style the TabNavigator Tab's height and padding? Im doing the following:

import Icon from "react-native-vector-icons/MaterialIcons";
const tabNav = TabNavigator({
  TabItem1: {
      screen: MainScreen,
      navigationOptions: {
          tabBarLabel:"Home",
          tabBarIcon: ({ tintColor }) => <Icon name={"home"} size={20} color={tintColor} />
      }
    },
    TabItem2: {
      screen: MainScreen,
      navigationOptions: {
        tabBarLabel:"Home",
        tabBarIcon: ({ tintColor }) => <Icon name={"home"} size={30} color={tintColor}  />
      }
    },
    TabItem3: {
      screen: MainScreen,
      navigationOptions: {
        tabBarLabel:"Browse",
        tabBarIcon: ({ tintColor }) => <Icon name={"home"} color={tintColor} />
      }
    }
}, {
    tabBarPosition: 'bottom',
    tabBarOptions: {
        activeTintColor: '#222',
        activeBackgroundColor :'yellow',  //Doesn't work
        showIcon: true,
        tabStyle: {
            padding: 0, margin:0,   //Padding 0 here
        },
    iconStyle: {
        width: 30,
        height: 30,
        padding:0       //Padding 0 here
    },
    }
});

How do I get rid of the padding between the icon and the label? I did padding:0 in iconStyle and also in tabStyle but no luck. I want no padding below the label too. How do I do that? Thanks.

Found the extra padding is caused by View:

How do i get rid of that?

回答1:

Solved by setting:

tabBarOptions: {
  labelStyle: {
    margin: 0
  },
}

回答2:

Try just style under tabBarOptions

  tabBarOptions: {
    style: {
      height: 45
    }
  }

回答3:

Unfortunately plenty of layout settings are hardcoded in this lib (like padding: 12 for tab which comes by default from elsewhere).

The only option is to look in node_modules\react-navigation\lib\views\TabView\ files and adjust as needed to your requirements.

Right now I'm hacking those sourses to find a quick-n-dirty way to allow rectangular (x>y), not only square (x=y, as defaulted) tab icons.

Other option is to create your custom tabBar component as maintainers suggest

回答4:

I just did it by looking at this page https://reactnavigation.org/docs/en/material-top-tab-navigator.html

my TabStack looks like this:

const tabBarOptions = {
  labelStyle: {
    fontSize: 12,
  },
  tabStyle: {
    width: 100,
  },
  style: {
    paddingTop: 50,
    backgroundColor: 'red',
  },
}

export const TabStack = createMaterialTopTabNavigator({
  History: History,
  Current: Current,
  Settings: Settings,
}, {
    tabBarOptions: tabBarOptions
});

来源：https://stackoverflow.com/questions/46814791/tabnavigator-extra-padding

标签

react-native

react-navigation

tabnavigator