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https://issues.apache.org/jira/browse/CB-10798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15186082#comment-15186082
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Jason Ginchereau commented on CB-10798:
---------------------------------------
I've verified that this repros on Android 6.x, and not on 5.x. It appears
Android 6.x simply blocks any writes to the external root directory.
[~lamuertepeluda], can you explain why you want to write to this directory? The
[relevant Android
documentation|http://developer.android.com/reference/android/os/Environment.html#getExternalStorageDirectory()]
says "applications should not directly use this top-level directory". Instead
you should write to one of the media-specific subdirectories (Music, Pictures,
etc.) or the application-specific directory
(cordova.file.externalDataDirectory).
Cordova should probably deprecate the externalRootDirectory property and set it
to null on Android 6+. (Apps should not be relying on it anyway since it is
null on iOS and Windows platforms.)
> Cannot create folder into cordova.file.externalRootDirectory on Android 6.x
> Marshmallow
> ---------------------------------------------------------------------------------------
>
> Key: CB-10798
> URL: https://issues.apache.org/jira/browse/CB-10798
> Project: Apache Cordova
> Issue Type: Bug
> Components: Plugin File
> Affects Versions: 4.1.1
> Environment: Android 6.0.1 (Nexus 9 and other 6.x devices), Cordova
> cli 6.0.0, Android platform 5.1.0
> Reporter: Vito Macchia
> Assignee: Jason Ginchereau
> Labels: android, triaged
>
> Cannot create folder into cordova.file.externalRootDirectory on Android 6.x
> Marshmallow. It always returns encording error (12), while on Android 5.x
> (Lollipop) the same code works fine.
> On Marshmallow devices I can succesfully create folders only into
> cordova.file.externalDataDirectory.
> No matter the value of preference AndroidPersistentFileLocation or
> AndroidExtraFilesystems.
> Code (some ES6, sorry)
> This snippet uses WinJS Promises - should work with native promises as well
> or you can just remove promises and pass succes and fail callbacks. It should
> create MY_Folder/test (both folders, like mkdirp) in the SD Card (regardless
> if emulated or not) root directory. It works fine with 5.x devices, but
> returns always FileError.ENCODING_ERR on Marshmallow.
> {code:title=createDirectory.js|borderStyle=solid}
> function errorCode(e) {
> var msg = '';
> switch (e.code) {
> case FileError.ABORT_ERR:
> msg = 'ABORT_ERR';
> break;
> case FileError.ENCODING_ERR:
> msg = 'ENCODING_ERR';
> break;
> case FileError.NOT_READABLE_ERR:
> msg = 'NOT_READABLE_ERR';
> break;
> case FileError.PATH_EXISTS_ERR:
> msg = 'PATH_EXISTS_ERR';
> break;
> case FileError.QUOTA_EXCEEDED_ERR:
> msg = 'QUOTA_EXCEEDED_ERR';
> break;
> case FileError.NOT_FOUND_ERR:
> msg = 'NOT_FOUND_ERR';
> break;
> case FileError.SECURITY_ERR:
> msg = 'SECURITY_ERR';
> break;
> case FileError.INVALID_MODIFICATION_ERR:
> msg = 'INVALID_MODIFICATION_ERR';
> break;
> case FileError.INVALID_STATE_ERR:
> msg = 'INVALID_STATE_ERR';
> break;
> default:
> msg = 'Unknown Error';
> break;
> };
> console.log('Error: ' + msg, "CODE", e);
> return msg;
> }
> const STATIC_CONTENT_DIR = 'MY_Folder/test';
> function createDirectory(startDirectory = cordova.file.externalRootDirectory)
> {
> return new WinJS.Promise(function(success, fail) {
> window.resolveLocalFileSystemURL(startDirectory, function(directory) {
> console.log("FS ROOT", directory);
> function fileGetDir(path, cb) {
> console.log("*** PATH", path);
> var fnGetOrCreateDir = function(p, de) {
> var entry = p.shift();
> console.log("PATH", path);
> if (entry) {
> de.getDirectory(entry, {
> create: true,
> exclusive: false
> }, function(dirEntry) {
> console.log("CR", dirEntry);
> fnGetOrCreateDir(p, dirEntry);
> }, fileFSError);
> } else
> if (cb) cb(de);
> };
> if (path) {
> var arPath = path.split("/");
> fnGetOrCreateDir(arPath, directory.filesystem.root);
> } else {
> if (cb) cb(directory);
> }
> }
> fileGetDir(STATIC_CONTENT_DIR, onSuccess);
> }, fileFSError);
> function fileFSError(e) {
> console.log(e.code);
> try {
> console.log("fileFSError: " + JSON.stringify(e) +
> errorCode(e));
> fail(e);
> } catch (err) {
> fail(err);
> }
> }
> function onSuccess(dirEntry) {
> console.log(dirEntry.fullPath);
> success(dirEntry.fullPath)
> }
> });
> }
> {code}
> I suspect it has something to do with the way the storage should be handled
> on Marshmallow, see for instance
> http://developer.android.com/guide/topics/data/data-storage.html and
> https://source.android.com/devices/storage/
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