React-Native Button style not work

Question

Import_this

import {AppRegistry, Text, View, Button, StyleSheet} from \'react-native\';

This my

Answer 1

Only learning myself, but wrapping in a View may allow you to add styles around the button.

const Stack = StackNavigator({
  Home: {
    screen: HomeView,
    navigationOptions: {
      title: 'Home View'
    }
  },
  CoolView: {
    screen: CoolView,
    navigationOptions: ({navigation}) => ({
      title: 'Cool View',
      headerRight: ( alert('cool')}
      />
    )
    })
  }
})