TabNavigator extra padding

Question

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?

Answer 1

Solved by setting:

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

Answer 2

Try just style under tabBarOptions

  tabBarOptions: {
    style: {
      height: 45
    }
  }

Answer 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