加载项目中的图片
<Image source={require('./img/5.jpg')} style={styles.imgeStyle}></Image>
加载APP中的图片
<Image source={{uri:'icon'}} style={styles.imgeStyle}></Image>
加载网络上的图片
<Image source={{uri:'https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superman/img/logo/bd_logo1_31bdc765.png'}} style={styles.imgeStyle}></Image>
图片文字居中样式的代码附录：
<ImageBackground
style={{height:100,width:300,justifyContent:'center',alignItems:'center'}}
source={{uri:'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1490198964612&di=4437ef95ce00e4b4c5628eb4496c0099&imgtype=0&src=http%3A%2F%2Fv1.qzone.cc%2Favatar%2F201408%2F03%2F23%2F44%2F53de58e5da74c247.jpg%2521200x200.jpg'}}
resizeMode='cover'>
<Text>
设置图片为背景
</Text>
</ImageBackground>