React Navigation - Gradient color for Header

Question

I am using React Navigation in React Native app and I want to change the backgroundColor for the header to be gradient and I found out there is a node module : react-native-linear-gradient to achieve gradient in react native.

I have Root StackNavigator like that :

const Router = StackNavigator({

Login: {
    screen: Login,
    navigationOptions: ({navigation}) => ({
       headerTitle: <Text>SomeTitle</Text>
       headerLeft: <SearchAndAgent />,
       headerRight: <TouchableOpacity
        onPress={() => { null }
    </TouchableOpacity>,
    headerStyle: { backgroundColor: '#005D97' },
    }),
},
});

I can wrap Text or View to be gradient like that :

<LinearGradient colors={['#3076A7', '#19398A']}><Text style={styles.title}>{title}</Text></LinearGradient>,

How can I wrap the header background in the navigationOptions to use the the LinearGradient module?

I know that I can create a custom header component and use it but when I am doing it all the native navigation animations from React Navigation not working like the Title Animation between two Routes so its not helping me.

Thanks for helping !

Answer 1

Just for your information, now with headerBackground props it's a way easier.

You can have a gradient header just doing this :

navigationOptions: {
  headerBackground: (
    <LinearGradient
      colors={['#a13388', '#10356c']}
      style={{ flex: 1 }}
      start={{x: 0, y: 0}}
      end={{x: 1, y: 0}}
    />
  ),
  headerTitleStyle: { color: '#fff' },
}

This solution works good even with SafeArea for IosX

Answer 2

The solution of Mark P was right but now you need to define headerStyle and do the absolute positioning there:

navigationOptions: {
  header: props => <GradientHeader {...props} />,
  headerStyle: {
    backgroundColor: 'transparent',
    position: 'absolute',
    top: 0,
    left: 0,
    right: 0,
    bottom: 0,
  },
},

and the GradientHeader:

const GradientHeader = props => (
<View style={{ backgroundColor: '#eee' }}>
    <LinearGradient
      colors={['red', 'blue']}
      style={[StyleSheet.absoluteFill, { height: Header.HEIGHT }]}
    >
      <Header {...props} />
    </LinearGradient>
  </View>
)