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Trying to make a folder in internal storage android [duplicate]

I'm unable to create directory in android 10. It's working on devices till android Oreo.
I tried two ways for creating folders.
Using File.mkdir():
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pastebin");
if (!f.isFile()) {
if (!(f.isDirectory())) {
success = f.mkdir();
}
Here, the variable success is always false which means the directory isn't created.
Using Files.createDirectory():
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pastebin");
if (!f.isFile()) {
if (!(f.isDirectory())) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
try {
Files.createDirectory(Paths.get(f.getAbsolutePath()));
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), R.string.unable_to_download, Toast.LENGTH_LONG).show();
}
} else {
f.mkdir();
}
}
which causes this exception:
pzy64.pastebinpro W/System.err: java.nio.file.AccessDeniedException: /storage/emulated/0/Pastebin
pzy64.pastebinpro W/System.err: at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:391)
pzy64.pastebinpro W/System.err: at java.nio.file.Files.createDirectory(Files.java:674)
I've implemented the run-time permissions and
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
are all set.

As was first disclosed back in March 2019, you no longer have access by default to arbitrary locations on external storage or removable storage on Android 10+. This includes Environment.getExternalStorageDirectory() and other methods on Environment (e.g., getExternalStoragePublicDirectory().
For Android 10 and 11, you can add android:requestLegacyExternalStorage="true" to your <application> element in the manifest. This opts you into the legacy storage model, and your existing external storage code will work.
Otherwise, your choices are:
Use methods on Context, such as getExternalFilesDir(), to get at directories on external storage into which your app can write. You do not need any permissions to use those directories on Android 4.4+. However, the data that you store there gets removed when your app is uninstalled.
Use the Storage Access Framework, such as ACTION_OPEN_DOCUMENT and ACTION_CREATE_DOCUMENT.
If your content is media, you can use MediaStore to place the media in standard media locations.

For Android 10, you can add
android:requestLegacyExternalStorage="true"
to your element in the manifest. This opts you into the legacy storage model, and your existing external storage code will work. This fix will not work on Android R and higher though, so this is only a short-term fix.

There are more restrictions in Android API 30
you can only write in your app-specific files
File dir_ = new File(context.getFilesDir(), "YOUR_DIR");
dir_.mkdirs();
or in the external storage of your app Android/data
File dir_ = new File(myContext.getExternalFilesDir("FolderName"),"YOUR_DIR");
UPDATE
this answer provided another solution https://stackoverflow.com/a/65744517/8195076
UPDATE
another way is to grant this permission in manifest
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
like this answer https://stackoverflow.com/a/66968986/8195076

This works for me and I think it's functional on Android 10>
ContentResolver resolver = getContentResolver();
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, Environment.DIRECTORY_PICTURES + "/Folder Example");
String path = String.valueOf(resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues));
File folder = new File(path);
boolean isCreada = folder.exists();
if(!isCreada) {
folder.mkdirs();
}

You can use public directory to save files in Android 11 like this:
dir = new File(Environment.getExternalStoragePublicDirectory(DIRECTORY_DOCUMENTS).getPath()
+ "/foldername");
if (!dir.exists()) {
dir.mkdir();
Toast.makeText(getApplicationContext(), "not exist", Toast.LENGTH_SHORT).show();
}

Since Q beta 4 it's possible to opt-out of that feature by:
targeting api 28 (or lower)
using requestLegacyExternalStorage manifest attribute:
<manifest ... >
<!-- This attribute is "false" by default on apps targeting Android Q. -->
<application android:requestLegacyExternalStorage="true" ... >
...
</application>
</manifest>

only use
android:requestLegacyExternalStorage="true"
in manifests

Android Studio: How to write a ringtone / notification / alarm audio file to storage and see it in the settings

So this functionality was working previously, but I guess somewhere when I upgraded versions, it does not anymore.
I want to create dynamically an audio file (this is working), and copy it to the storage (this is working, it is currently copied to my local app storage :
Android/data/com.mypackagename/files/xxx.mp3
Then I create a new ContentValues with the data & metadata and insert it into MediaStore.Audio.Media.EXTERNAL_CONTENT_URI.
After that I set ringtone and launch ringtone picker to check:
RingtoneManager.setActualDefaultRingtoneUri(_instance, RingtoneManager.TYPE_RINGTONE, newUri);
Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);intent.putExtra(RingtoneManager.EXTRA_RINGTONE_EXISTING_URI, newUri);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_DEFAULT_URI, newUri);
startActivityForResult(intent, 1);
But the ringtone set is only the ID of the media, not the name, and I can't find it in the list..
I though the Media wasn't scanned, so i tried this beforehand:
Intent scanFileIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, newUri);
sendBroadcast(scanFileIntent);
I'm not really sure what this does, but it didn't helped.
Any clues what's going on with the current status of creating ringtone with Android Studio ?

So here was my error. I needed to correct some things in my Manifest to get the rights permissions:
//Without this folders will be inaccessible in Android-11 and above devices
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
//Without this entry storage-permission entry will not be visible under app-info permissions list Android-10 and below
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="29"
tools:ignore="ScopedStorage"/>
//Without this entry the folders will remain in-accessible in Android-10, even if WRITE_EXTERNAL_STORAGE as above is present.
<application
android:requestLegacyExternalStorage="true"/>
The Ringtones external root folder is not accessible from basic WRITE_EXTERNAL_STORAGE permissions anymore. We have access to app specific external folder, & others (link).
Even the Media store does not give you access to this folder, so from Android 11 & forward, you need the MANAGE_EXTERNAL_STORAGE permission, that gives you this warning:
Most apps are not allowed to use MANAGE_EXTERNAL_STORAGE. Because you need to ask for this permission to the user, and he might refuse..
But if you want to do what I wanted to do, you'll need it..
Be sure that your app ask for the permission through:
// permission: Manifest.permission.WRITE_EXTERNAL_STORAGE
// permission_id: 1
public Boolean checkPermission(String permission, Integer permission_id) {
if (ContextCompat.checkSelfPermission(_instance, permission) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(_instance, new String[]{permission}, permission_id);
return false;
} else {
return true;
}
}

How to create custom directory "/storage/emulated/0/TestDir" in Android 10? [duplicate]

I'm unable to create directory in android 10. It's working on devices till android Oreo.
I tried two ways for creating folders.
Using File.mkdir():
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pastebin");
if (!f.isFile()) {
if (!(f.isDirectory())) {
success = f.mkdir();
}
Here, the variable success is always false which means the directory isn't created.
Using Files.createDirectory():
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pastebin");
if (!f.isFile()) {
if (!(f.isDirectory())) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
try {
Files.createDirectory(Paths.get(f.getAbsolutePath()));
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), R.string.unable_to_download, Toast.LENGTH_LONG).show();
}
} else {
f.mkdir();
}
}
which causes this exception:
pzy64.pastebinpro W/System.err: java.nio.file.AccessDeniedException: /storage/emulated/0/Pastebin
pzy64.pastebinpro W/System.err: at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:391)
pzy64.pastebinpro W/System.err: at java.nio.file.Files.createDirectory(Files.java:674)
I've implemented the run-time permissions and
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
are all set.

As was first disclosed back in March 2019, you no longer have access by default to arbitrary locations on external storage or removable storage on Android 10+. This includes Environment.getExternalStorageDirectory() and other methods on Environment (e.g., getExternalStoragePublicDirectory().
For Android 10 and 11, you can add android:requestLegacyExternalStorage="true" to your <application> element in the manifest. This opts you into the legacy storage model, and your existing external storage code will work.
Otherwise, your choices are:
Use methods on Context, such as getExternalFilesDir(), to get at directories on external storage into which your app can write. You do not need any permissions to use those directories on Android 4.4+. However, the data that you store there gets removed when your app is uninstalled.
Use the Storage Access Framework, such as ACTION_OPEN_DOCUMENT and ACTION_CREATE_DOCUMENT.
If your content is media, you can use MediaStore to place the media in standard media locations.

For Android 10, you can add
android:requestLegacyExternalStorage="true"
to your element in the manifest. This opts you into the legacy storage model, and your existing external storage code will work. This fix will not work on Android R and higher though, so this is only a short-term fix.

There are more restrictions in Android API 30
you can only write in your app-specific files
File dir_ = new File(context.getFilesDir(), "YOUR_DIR");
dir_.mkdirs();
or in the external storage of your app Android/data
File dir_ = new File(myContext.getExternalFilesDir("FolderName"),"YOUR_DIR");
UPDATE
this answer provided another solution https://stackoverflow.com/a/65744517/8195076
UPDATE
another way is to grant this permission in manifest
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />
like this answer https://stackoverflow.com/a/66968986/8195076

This works for me and I think it's functional on Android 10>
ContentResolver resolver = getContentResolver();
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.MediaColumns.RELATIVE_PATH, Environment.DIRECTORY_PICTURES + "/Folder Example");
String path = String.valueOf(resolver.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, contentValues));
File folder = new File(path);
boolean isCreada = folder.exists();
if(!isCreada) {
folder.mkdirs();
}

You can use public directory to save files in Android 11 like this:
dir = new File(Environment.getExternalStoragePublicDirectory(DIRECTORY_DOCUMENTS).getPath()
+ "/foldername");
if (!dir.exists()) {
dir.mkdir();
Toast.makeText(getApplicationContext(), "not exist", Toast.LENGTH_SHORT).show();
}

Since Q beta 4 it's possible to opt-out of that feature by:
targeting api 28 (or lower)
using requestLegacyExternalStorage manifest attribute:
<manifest ... >
<!-- This attribute is "false" by default on apps targeting Android Q. -->
<application android:requestLegacyExternalStorage="true" ... >
...
</application>
</manifest>

only use
android:requestLegacyExternalStorage="true"
in manifests

File creation failing without exception

I'm attempting to create a blank file in an Android app. My code is working fine on Android 5, but when I tested with Android 7 or higher it fails without printing an exception.
My code is:
downloadLocation = new File(Environment.getExternalStorageDirectory() + "/" + "folder" + System.currentTimeMillis());
downloadLocation.mkdir();
downloadFile = new File(downloadLocation, "file" + System.currentTimeMillis());
downloadFile.createNewFile();
Note, I have declared the variables and everything, I just didn't include that. Both the downloadLocation and downloadFile variables are File type.
On the Android 5 physical device that I was using, it worked just fine. I then tested with an Android 7 virtual device, but it fails without printing an error in the log. The issue is with the second block of code, specifically the last line. I know this because I placed a log between each line and every log outputs except for the log after the file is created.
It's very hard to debug something when there is no error displayed, dispite there being a catch error that is suppose to print the stack trace and the exception.
Any ideas?
Just as a note, I know that the file and folder don't already exist because I've appended a time stamp to the name to prevent that for testing purposes, since I know 100% that the file will have a unique name in release. That's why I haven't encased each block in an if statement that would check to make sure that the file/folder doesn't already exist.

Your code is probably throwing a file not found exception. After downloadLocation.mkdir() call:
if (downloadLocation.exists()) { System.out.println("File Exists"); }
You'll notice the message won't print. This is because you never had permissions to write to the directory.
Add the following to your AndroidManifest.xml:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
An easy way to handle requesting permissions is a great library: EasyPermissions
Using EasyPermissions, your code might look like:
1.) You call a function in your activity to trigger creating the file:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
writeFiles();
}
2.) writeFiles will need to ensure permissions are granted before executing the file operations:
#AfterPermissionGranted(PERMISSIONS_REQUEST_CODE)
private void writeFiles() {
String[] permissions = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
if (EasyPermissions.hasPermissions(this, permissions)) {
try {
File downloadLocation = new File(Environment.getExternalStorageDirectory() + "/" + "folder" + System.currentTimeMillis());
downloadLocation.mkdir();
if (downloadLocation.exists()) {
Log.i("writeFiles()", downloadLocation.getAbsolutePath());
}
File downloadFile = new File(downloadLocation, "file" + System.currentTimeMillis());
downloadFile.createNewFile();
} catch (Exception e) {
Log.e("ERROR", e.getMessage(), e);
}
} else {
// Do not have permissions, request them now
EasyPermissions.requestPermissions(this, "Your permission rationale", PERMISSIONS_REQUEST_CODE, permissions);
}
}
3.) In order for EasyPermissions to automatically call writeFiles() again after permissions are granted, you'll need to add this override:
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
// Forward results to EasyPermissions
EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
}
You'll notice PERMISSIONS_REQUEST_CODE used a couple of times. This is just a constant integer you use to identify the permissions requests when onRequestPermissionsResult is called from the Activity. This can really be any number you want (such as 1000) so long as it's unique. I linked to the documentation of EasyPermissions which will further explain how it works, but this greatly simplifies how you handle runtime permissions.
Edit:
The following links will help explain more about requesting permissions for your apps:
https://developer.android.com/training/permissions/requesting
https://developer.android.com/guide/topics/permissions/overview#normal-dangerous
Android Marshmallow 6.0: Asking For Permission
In the past, when users would install your app in the Play Store they would be presented with a list of the permissions your app wants. If the user proceeded to install the app, all permissions were automatically granted. Android 6 changed this and now users are given more control over which permissions they want to grant each app.
Some permissions still don't need user approval, these are qualified as normal permissions. An example would be the INTERNET permission. Other permissions that could affect privacy, system data, etc... are considered dangerous permissions and will require the user to grant them via the permissions dialog as seen above. The second URL I posted above will show you some tables of what each permission is qualified as.
Keep in mind if users deny a permission and check the "Don't show again" box then the dialog will never be shown to them again and they will have to go to the App in the system Settings and grant the permission from there. If you ever want to help the user get to this screen you can use the following intent:
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent.setData(Uri.fromParts("package", getPackageName(), null));
startActivity(intent);

Can't create folder on external storage on android

My development phone is a Nexus 5, running Android 4.4.2.
In my application, I am attempting to create a folder on external storage that will store debug information for my application. Basically it will contain all the commands executed by the application, so that when a user encounters a problem, I have the option of having them send me the information from the debug folder to analyse.
I started off by trying to write a file to the folder, but found there was an error creating the folder. At first I was using mkdir(), then I moved onto mkdirs() which also didn't work.
I have <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> in my manifest.
Here is the code for creating the folder:
File folder = new File(Environment.getExternalStorageDirectory() + "/DebugData");
String path = folder.getPath();
if(!folder.mkdirs() || !folder.exists()){
Log.e(LOG_TAG, path + " failed");
} else {
Log.d(LOG_TAG, path + " succeeded");
}
Here is what I have also tried:
//Check SD card state
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state) || !Environment.MEDIA_MOUNTED.equals(state)) {
Log.e(LOG_TAG, "Error: external storage is read only or unavailable");
} else {
Log.d(LOG_TAG, "External storage is not read only or unavailable");
}
This returns that the external storage is not read only or unavailable.
I have also tried different paths, such as File folder = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "Folder1");
This is where it became really confusing.
I tried development on different phones. Firstly, I grabbed a Galaxy S4 GT-i9505 running Android 4.2.2 and it worked. I was able to create the folders and write to them. This showed me that the code was working. Also the path returned by running the code on the S4 and Nexus 5 was the same.
Then I thought it may be android version specific. So I grabbed a Nexus 4 with Android 4.4.2 and the code worked on it as well. Created the folders and allowed me to write to them.
None of the phones are rooted and are all stock standard. There's no special applications or anything I can think of settings wise on the Nexus 5 that would cause permissions problems. The connection is set to Media Device (MTP).
EDIT:
I should add that I have tried the follow which also did not work:
Writing a file to the root directory of the external storage
Creating the file in the external storage root directory and writing to it
Creating a folder in a path outlined and writing a file to it
Creating the file in the path outlined and writing to it
I am confused as to what is causing this, is there anything else I can test or change to fix the issue?
EDIT 2:
Turns out the issue was due to, I think, indexing.
Basically all of the other devices I tested on, allowed me to reconnect the USB connection and view the created files and folders.
For some reason my Nexus 5 doesn't index the folders/files, even though they exist.
I downloaded a different 3rd party file explorer application and noticed all the folders and files were there.
So to view these folders and files via USB debugging, I have to restart the phone in order to re-index them, which seems quite annoying but it is better than it not working at all.
Thanks.

In terms of this being an indexing issue with the Nexus, this worked for me:
MediaScannerConnection.scanFile(this, new String[] { file.toString() }, null,
new MediaScannerConnection.OnScanCompletedListener() {
public void onScanCompleted(String path, Uri uri) {
Log.i("ExternalStorage", "Scanned " + path + ":");
Log.i("ExternalStorage", "-> uri=" + uri);
}
});
You should call it straight after creating and saving the file. By using the scanner, I was able to see newly created files and directories simply by replugging the device in.
According to the docs:
MediaScannerConnection provides a way for applications to pass a newly
created or downloaded media file to the media scanner service. The
media scanner service will read metadata from the file and add the
file to the media content provider.
Hope this helps someone else.

Turns out the issue was due to, I think, indexing.
Basically all of the other devices I tested on, allowed me to reconnect the USB connection and view the created files and folders.
For some reason my Nexus 5 doesn't index the folders/files, even though they exist.
I downloaded a different 3rd party file explorer application and noticed all the folders and files were there.
So to view these folders and files via USB debugging, I have to restart the phone in order to re-index them, which seems quite annoying but it is better than it not working at all.

For android sdk version 23 and above you should check if the user has granted permission of external storage.
private void createFolder() {
if (isStoragePermissionGranted()) {
File folder = new File(Environment.getExternalStorageDirectory()+ File.separator + "DebugData");
if(!folder.exists()){
folder.mkdir();
}
}
public boolean isStoragePermissionGranted() {
if (Build.VERSION.SDK_INT >= 23) {
if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
== PackageManager.PERMISSION_GRANTED) {
return true;
} else {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
return false;
}
}
else { //permission is automatically granted on sdk<23 upon installation
return true;
}
}
The code above worked for me and I hope it will work for you.

Had the same problem. Turned out I was testing on Android 6 and did not check for runtime WRITE_EXTERNAL_STORAGE permission.

First, new File() is just create object for file connect.
you want use this file, file is exists or createNewFile().
If you want use this file to create directory, check file is exists, isDirectory() after then mkDir().
Second, check Environment.getExternalStorageDirectory is variable path.
You can use DDMS or ADB for work.
Additionaly, I think you add permission for read external storage for something error.

If you are running an Android device with api >= 23, you need to request permission from user before you call mkdir() function.
My previous answer with example code can be found
https://stackoverflow.com/a/38694026/5089713

For Android 10+ add following into manifest:
<application
android:requestLegacyExternalStorage="true"
...
as asking for Manifest.permission.WRITE_EXTERNAL_STORAGE is no more enough.

Typically, I do this:
/**
* Return a dedicated directory named "MyApp" at the top of external storage
*/
public static file getDataDir() {
File sdcard = Environment.getExternalStorageDirectory();
if( sdcard == null || !sdcard.isDirectory() ) {
// TODO: warning popup
Log.w(TAG, "Storage card not found " + sdcard);
return null;
}
File dataDir = new File(sdcard, "MyApp");
if( !confirmDir(dataDir) ) {
// TODO: warning popup
Log.e(TAG, "Unable to create " + dataDir);
return null;
}
return dataDir;
}
private static boolean confirmDir(File dir) {
if (dir.isDirectory()) return true; // already exists
if (dir.exists()) return false; // already exists, but is not a directory
return dir.mkdirs(); // create it
}
Also, add this permission to your manifest:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
If you want private storage (typically under /data/) for your app (not on sdcard), then look into getDir(), getFilesDir(), fileList(), openFileInput(), openFileOutput(), etc.
There are also helper functions to get private directories within the sdcard for API 8 and above: getExternalFilesDir(), getExternalCacheDir(), etc.