React Native将base64图像保存到相册 [英] React Native save base64 image to Album

问题描述

第三方API返回以base64编码的"QR码图像"，
我需要将该图像保存到用户的相册"中.

Third Party API return a "QR code image" in base64 encode,
I need save that image to User's Album.

• CamerRoll-不支持将base64图像保存到相册
• React-Native-Fetch-Blob- https://github.com/wkh237/react-native-fetch-blob
  仍在调查中
• React-Native-fs- https://github.com/itinance/react-native-fs
  我正在尝试这个
• 只有很少的Github星(<10)的npm模块

React-Native-Fetch-Blob维护者不见了，所以没人回答Github问题，来自createFile "rel ="noreferrer">反应性本机-获取-Blob文档未按预期工作(未将图像保存到相册中)

the React-Native-Fetch-Blob maintainer gone missing, so no one answering Github Issue, createFile from React-Native-Fetch-Blob Document not working as expected(not saving image into album)

  import fetch_blob from 'react-native-fetch-blob';

  // json.qr variable are return from API

  const fs = fetch_blob.fs
  const base64 = fetch_blob.base64
  const dirs = fetch_blob.fs.dirs

  const file_path = dirs.DCIMDir + "/some.jpg"
  const base64_img = base64.encode(json.qr)

  fs.createFile(file_path, base64_img, 'base64')
  .then((rep) => { 
    alert(JSON.stringify(rep));
  })
  .catch((error) => {
    alert(JSON.stringify(error));
  });

有人解决过这个问题吗?

如何将base64编码的图像字符串保存到用户相册?(作为jpg或png文件)

因为我 fetch 一个没有CORS标头的API，
我无法在远程调试JS
中对其进行调试Chrome会阻止该请求的发生，

Anyone deal with this problem before?

How to save a base64 encode Image string to User album? (as a jpg or png file)

because I fetch an API with no CORS header,
I can't debug it in Debug JS Remotely
Chrome would stop that request from happening,

我必须在我的Android手机上运行它才能使其工作
(在真实电话上没有CORS控件)

I have to run that on my Android Phone to make it work
(no CORS control on real phone)

我打算使用剪贴板保存base64字符串，
并将其硬编码到我的代码中，
调试 react-native-fetch-blob createFile API

I am planing use Clipboard save base64 string,
and hardcode it in my code,
to debug what's wrong with react-native-fetch-blob createFile API

推荐答案

您现在只能使用react native fetch blob来实现此目的.

You can now use only react native fetch blob to achieve this.

只需将RNFS.writeFile替换为

Simply replace RNFS.writeFile with

RNFetchBlob.fs.writeFile(file_path, image_data, 'base64')

如果您希望在本机OS查看器中查看文件，只需输入

If you wish to view file in native OS viewer you can simply put

                if (isAndroid) {
                  RNFetchBlob.android.actionViewIntent(file_path, 'application/pdf');
                } else {
                  RNFetchBlob.ios.previewDocument(file_path);
                }

这篇关于React Native将base64图像保存到相册的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！