import { WebView, View, StyleSheet } from 'react-native';

source={require('./tpl.html')}

import { WebView, View, StyleSheet, Platform } from 'react-native';

source={Platform.OS==='ios' ? require('./tpl.html'):{uri:'file:///android_asset/tpl.html'}}

 defaultSelectedIcon: {
        tintColor: 'black',//修改black
 },

let styles = StyleSheet.create({
    container: {
        fontSize: 12,
        color: '#fff',
        backgroundColor: 'red',
        lineHeight: 15,
        textAlign: 'center',
        borderRadius: 7.5,
        overflow: 'hidden',
    },
});

renderTab(){
...
<Text style={[{color: textColor, fontWeight, fontSize: isTabActive ? 18 : 14}, textStyle,]}>
                    {name}
</Text>
...
}
//+ fontSize: isTabActive ? 18 : 14

 if (props.removeClippedSubviews === undefined) {
      props.removeClippedSubviews = true;//把true改成false
  }