Android Question open failed: EACCES (Permission denied)

[iCAB]

Hi All,

I am using JHSBarCodes Library, all was ok until I changed the target sdk from 28 to 29

<uses-sdk android:minSdkVersion="9" android:targetSdkVersion="29"/>

Android jar

C:\android_sdk_2\platforms\android-30\android.jar

At startup the app is requesting external storage permission

PERMISSION_WRITE_EXTERNAL_STORAGE

The error I am getting is

(ErrnoException) android.system.ErrnoException: open failed: EACCES (Permission denied)

Any ideas?

 

[Mahares]

Any ideas?

Did you add this line to the manifest:

SetApplicationAttribute(android:requestLegacyExternalStorage, true)

See reason here why:

android.jar / targetSdkVersion / minSdkVersion

There are several versioned components that affect the compilation process and the runtime behavior of our apps. The purpose of this tutorial is to explain the differences between them and help you choose which version to use. Each Android version is mapped to an api level. You can see this...

www.b4x.com

 

[iCAB]

Thanks a lot Mahares!
Problem solved

 

[Erel]

Note that it is a temporary solution. In the long run you should either avoid using File.DirRootExternal or switch to ContentChooser or ExternalStorage.

 

[iCAB]

It seems to be happening inside the library, so maybe I should copy @Johan Schoeman on that

 

[agraham]

He has posted the library source here and it is written in B4A.

QR Code Library

This library will create QR Codes (version 1 to 40), Aztec Codes (layer 1 to 11), PDF417, 2 of 5 Interleaved, EAN-13, EAN-8, Code 128, Code 39, Code 93, Code 11. Library files (*.xml and *.jar) inside the /Files folder. Copy them to your default library folder. It will create *.PNG files that...

www.b4x.com

If you want to keep using you could change where each code module saves it result to a different folder like RunTimePermissions.GetSafeDirDefaultExternal. That code is at the end of each module.

 

[iCAB]

Thanks Agraham!