I have an app here where I need to put the logo in the navbar. That need to overflow the scene layout. Work well in Ios with no problem but in android seem like he not working. I put the code at the bottom of the images. As you can see I use EStyleSheet so that let me use %.

IOS

Android

import React from 'react';
import { Scene, Router } from 'react-native-router-flux';
import EStyleSheet from 'react-native-extended-stylesheet';
import { View, Platform } from 'react-native';
import { SmallLogo } from './components';
import { checkColor } from './helpers';
import {
  HomeScreen,
  ImagePickerScreen,
  WaitingResponseScreen,
  ResultsScreen
} from './modules';
import Colors from '../constants/Colors';

const styles = EStyleSheet.create({
  navStyle: {
    flex: 1,
    marginTop: '5%',
    alignItems: 'center',
  },
  logoCircle: {
    backgroundColor: '$whiteColor',
    height: 60,
    width: 60,
    borderRadius: 30,
    justifyContent: 'center',
    alignItems: 'center'
  }
});

const logoNav = result => (
  <View style={styles.navStyle}>
    <View style={styles.logoCircle}>
      <SmallLogo color={checkColor(result)} />
    </View>
  </View>
);

const pdTop = Platform.OS === 'ios' ? 64 : 54;

export default () => (
  <Router
    sceneStyle={{ paddingTop: pdTop }}
    navigationBarStyle={{ backgroundColor: Colors.greenColor }}
    renderTitle={props => {
      if (props.result) {
        return logoNav(props.result);
      }
      return logoNav(null);
    }}
    backButtonTextStyle={{ color: Colors.whiteColor }}
    leftButtonIconStyle={{ tintColor: Colors.whiteColor }}
  >
    <Scene
      key="home"
      component={HomeScreen}
    />
    <Scene
      key="imagesPicker"
      hideBackImage
      component={ImagePickerScreen}
    />
    <Scene
      key="waitingResponse"
      backTitle="Back"
      component={WaitingResponseScreen}
    />
    <Scene
      key="results"
      backTitle="Back"
      initial
      component={ResultsScreen}
    />
  </Router>
);