com.rnfs.RNFSManager.mkdir:java.lang.Exception:无法创建目录

Question

https://github.com/itinance/react-native-fs

代码

import RNFS from 'react-native-fs';
RNFS.mkdir(RNFS.ExternalDirectoryPath + dir)

logcat

05-06 22:43:41.693  W/System.err: java.lang.Exception: Directory could not be created
05-06 22:43:41.697  W/System.err:     at com.rnfs.RNFSManager.mkdir(RNFSManager.java:680)

此错误发生在编译之后，

但在调试时是正常的，

Answer 1

ok，权限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />