TypeError：预期的动态类型＆＃39; string＆＃39;但有类型＆＃39;对象＆＃39;反应原生

Question

我必须使用react-native将图像上传到cloudinary。我使用过这段代码：

uploadImage(source) {
let timestamp = (Date.now() / 1000 | 0).toString();
let api_key = '***********'
let api_secret = '**************'
let cloud = '*****'
let hash_string = 'timestamp=' + timestamp + api_secret
let signature = CryptoJS.SHA1(hash_string).toString();
let upload_url = 'https://api.cloudinary.com/v1_1/' + cloud + '/image/upload'

let xhr = new XMLHttpRequest();
xhr.open('POST', upload_url);
xhr.onload = () => {
  console.log(xhr);
};
let formdata = new FormData();
formdata.append('file', {uri: source, type: 'image/png', name: 'upload.png'});
formdata.append('timestamp', timestamp);
formdata.append('api_key', api_key);
formdata.append('signature', signature);
xhr.send(formdata);};

但是我收到了这个错误：

  

TypeError：预期的动态类型＆＃39; string＆＃39;但是有类型＆＃39;对象＆＃39;

Answer 1

如果你从“react-native-image-picker”获得“source”， 试着改变

SELECT c.*
FROM codes c
WHERE (c.userid, c.date) = (SELECT c2.userid, c2.date
                            FROM codes c2
                            WHERE c2.code = c.code 
                            ORDER BY c2.date DESC, c2.userid DESC
                            LIMIT 1
                           );

到

'XXXXXX'

在android中。 我以这种方式解决了我的问题。