What's the best way to add a full screen background image

Question

(This has been deprecated now you can use ImageBackground)

This is how I've done it. The main deal was getting rid of the static fixed sizes.

class ReactStrap extends React.Component {
  render() {
    return (
      <Image source={require('image!background')} style={styles.container}>
        ... Your Content ...
      </Image>
    );
  }
}

var styles = StyleSheet.create({
  container: {
    flex: 1,
    // remove width and height to override fixed static size
    width: null,
    height: null,
  }
};

You can use flex: 1 styling on an <Image> element to have it fill the whole screen. You can then use one of the Image resize modes to have the image completely fill the element:

<Image source={require('image!egg')} style={styles.backgroundImage} />

Style:

import React from 'react-native';

let { StyleSheet } = React;

let styles = StyleSheet.create({
  backgroundImage: {
    flex: 1,
    resizeMode: 'cover', // or 'stretch'
  }
});

I'm pretty sure you can get rid of the <View> wrapping your image and this will work.

Note: This solution is old. Please refer to https://facebook.github.io/react-native/docs/images.html#background-image-via-nesting instead

Try this solution. It is officially supported. I have just tested it and works flawlessly.

var styles = StyleSheet.create({
  backgroundImage: {
    flex: 1,
    alignSelf: 'stretch',
    width: null,
  }
});

And as for using it as Background image, just do the following.

<Image style={styles.backgroundImage}>
  <View>
    <Text>All your stuff</Text>
  </View>
</Image>

Update March 2018 Using Image is deprecated use ImageBackground

  <ImageBackground 
          source={{uri: 'https://images.pexels.com/photos/89432/pexels-photo-89432.jpeg?h=350&dpr=2&auto=compress&cs=tinysrgb'}}
          style={{ flex: 1,
            width: null,
            height: null,
            }}
        >
       <View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
        <Text>Your Contents</Text>
       </View>

 </ImageBackground >

I tried several of these answers to no avail for android using react-native version = 0.19.0.

For some reason, the resizeMode inside my stylesheet did not work appropriately? However, when sytlesheet had

backgroundImage: {
flex: 1,
width: null,
height: null,
}

and, within the Image tag I specified the resizeMode:

<Image source={require('path/to/image.png')} style= {styles.backgroundImage} resizeMode={Image.resizeMode.sretch}>

It worked perfectly! As mentioned above, you can use Image.resizeMode.cover or contain as well.

Hope this helps!