1. Error description

The following error occurred while writing the file to sdcard:

open failed: ENOENT (No such file or directory)

2. Error analysis

At first, I thought I forgot to add read-write permission, which was checked.

Finally, when I think of android10 onwards, in addition to the dynamic application of permissions, you must add in the Application node of AndroidManifest.xml of the main application.

android:requestLegacyExternalStorage="true"

3. Solution

Add the following codes in the Application node of AndroidManifest.xml of the main application:

android:requestLegacyExternalStorage="true"