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This code creating the folder in INTERNAL STORAGE Everytime ,I need to create folder in my SDCARD

Why does this code only create a new folder in the internal storage and not create the folder on the SD Card.
Thanks
Code:
File direct = new File(Environment.getExternalStorageDirectory()+"/Akshay");
if(!direct.exists()) {
if(direct.mkdir()); //directory is created;
}
Manifest:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Try this :
File f = new File(Environment.getExternalStorageDirectory(), 'Akshay');
if (!f.exists()) {
f.mkdirs();
}

Android mkdirs() doesn't work

I'm trying to generate a folder with my android application in my phone storage (not on the sdcard) but my mkdirs() is not working.
I have set the android.permission.WRITE_EXTERNAL_STORAGE in my manifest and use this basic code :
File mediaStorageDir = new File(Environment.getExternalStorageDirectory(), "/MyDirName");
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d("App", "failed to create directory");
}
}
but it doesn't work ... The mkdirs is always at false and the folder is not created.
I have tried everything and looked at all the topics about it but nothing is working and I don't know why.

if you target and compile sdk is higher then lolipop then please refer this link
or
File sourcePath = Environment.getExternalStorageDirectory();
File path = new File(sourcePath + "/" + Constants.DIR_NAME + "/");
path.mkdir();

If you you the emulator and the Device File Explorer of Android Studio, be sure that you right-click over a folder of the emulator and then click on 'synchronize' to update the files displayed. The Device File Explorer doesn't update by itself in real time.

when writing code for android API 29 and above use the following permission in your application manifest (AndroidManifest.xml)
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
Then in your java file add the following lines of code
`ActivityCompat.requestPermissions(this, new String[]
{
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
},
PackageManager.PERMISSION_GRANTED);
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
file = new File(Environment.getExternalStorageDirectory().getPath(), "MyDirName/");
if (!file.exists()) {
try {
file.mkdirs();
} catch (Exception e) {
e.printStackTrace();
}
}
`

android application failed to create directory in SD card

I'm trying to create a directory in an SD card using the below code.
String state = Environment.getExternalStorageState();
if (state.equals(Environment.MEDIA_MOUNTED)) {
String secondaryStore = System.getenv("SECONDARY_STORAGE");
File videoDirectory = new File(secondaryStore + File.separator +"video_files");
if(!videoDirectory.exists()){
boolean sd_mkdirs = videoDirectory.mkdirs();
if(sd_mkdirs){
Log.d(TAG,"file Created");
}
}
}else{
File videoDirectory = new File(Environment.getExternalStorageDirectory() + File.separator + "video_files");
if(!videoDirectory.exists()){
boolean internal_mkdirs = videoDirectory.mkdirs();
if(internal_mkdirs){
Log.d(TAG,"file Created");
}
}
}
This code checks whether or not the SD card is mounted. If true It creates a directory in the SD card, otherwise in internal storage. However, when it is suppossed to make a directory on the SD card _mkdirs returns false. What am I doing wrong ?
This is my AndroidManifest file. I think I included the permission to write.
<?xml version="1.0" encoding="utf-8"?>
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />

Android unable to access external storage

I have this code:
File rootsd = Environment.getExternalStorageDirectory();
File[] imagelist = rootsd.listFiles(new FilenameFilter(){
public boolean accept(File dir, String name)
{
return ((name.endsWith(".jpg"))||(name.endsWith(".png")));
}
});
And my permission:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
Somehow the imagelist is null instead of empty. Can anyone help me. Thanks a lot.

move rootsd file upto the directory where images are present. you are just considering /mnt/sdcard path. point to the directory where images are in, like
File rootsd = new File(Environment.getExternalStorageDirectory().getPath()
+ File.separator + "imagesdirectory");

Creating Folder in Internal memory

I am unable to get the methods for creating folder in Internal Memory,
i gone through few conversations in Android create folders in Internal Memory and Problem facing in reading file from Internal memory of android. But still i am unable to meet my requirement.
My requirement is , I want to create a folder in Internal Memory, there i want to Store one video.
Thankyou you very much in advance for valuable feedbacks.

try the below
File mydir = context.getDir("users", Context.MODE_PRIVATE); //Creating an internal dir;
if (!mydir.exists())
{
mydir.mkdirs();
}

Here is the code which I am using for creating files in internal memory :
File myDir = context.getFilesDir();
// Documents Path
String documents = "documents/data";
File documentsFolder = new File(myDir, documents);
documentsFolder.mkdirs(); // this line creates data folder at documents directory
String publicC = "documents/public/api." + server;
File publicFolder = new File(myDir, publicC);
publicFolder.mkdirs(); // and this line creates public/api.myservername folder in internal memory

To create directory on phone primary storage memory (generally internal memory) you should use following code. Please note that ExternalStorage in Environment.getExternalStorageDirectory() does not necessarily refers to sdcard, it returns phone primary storage memory
File mediaStorageDir = new File(Environment.getExternalStorageDirectory(), "MyDirName");
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d("App", "failed to create directory");
return null;
}
}
Directory created using this code will be visible to phone user. The other method (as in accepted answer) creates directory in location (/data/data/package.name/app_MyDirName), hence normal phone user will not be able to access it easily and so you should not use it to store video/photo etc.
You will need permissions, in AndroidManifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
File direct = new File(Environment.getExternalStorageDirectory()+"/folder_name");
if(!direct.exists()) {
if(direct.mkdir()); //directory is created;
}

There is a "cacheDirectory" in your "data/package_name" directory.
If you want to store something in that cache memory,
File cacheDir = new File(this.getCacheDir(), "temp");
if (!cacheDir.exists())
cacheDir.mkdir();
where this is context.

try {
File cashDir = new File(dir.getCanonicalPath(),"folder");
if(!(cashDir.exists())) cashDir.mkdirs();
} catch (IOException e) {
e.printStackTrace();
}