浮动将背景在ImageBackground中向右对齐

Question

如何将背景图像向右对齐？ 我尝试将图像作为背景向右对齐 我尝试过：

position: 'absolute', right: 0,
justifyContent: 'flex-end', 
alignSelf: 'flex-end',

但是没有用

<ImageBackground source={getImage(item.image)} style={{width: '100%', height: '100%'}} 
                    imageStyle={{width: '50%', height: '50%'}}>
    <Text style={styles.text}>Lorem Ipsum is simply dummy text of the 
        printing and typesetting industry.</Text>
</ImageBackground>