Convert base64 string to image in react native

问题

Problem

I created a social media app with expo's react native, and wanted to add the ability to upload images. Since expo won't let you convert a file to a blob to upload, I just uploaded the base64 image data as a string to the server database. How can I convert this data into the viewable image again after I download the data from off of the server?

回答1:

You can do this:

var base64Icon = 'data:image/png;base64,iVBORw0KGgoAAAANS...';
<Image style={{width: 50, height: 50}} source={{uri: base64Icon}}/>

In the base64Icon variable you need to put your base64 data after data:image/png;base64,. Like this:

var base64Icon = 'data:image/png;base64,{PLACE_YOUR_BASE64_DATA_HERE}';

来源：https://stackoverflow.com/questions/48134980/convert-base64-string-to-image-in-react-native