CODEWITHSUNDEEP
javaandroid
Antarix
Antarix

Reputation: 685

Create multiple directories in Android

This is my directory structure on my Android sdcard

 sdcard/alQuranData/Reader1/Surah

Here is my code to make Directories

File SDCardRoot = new File(Environment.getExternalStorageDirectory().toString() + "alQuranData/Reader1/Surah");
                Toast.makeText(getApplicationContext(), SDCardRoot.toString(), Toast.LENGTH_LONG).show();
                if (!SDCardRoot.exists()) {
                    Log.d("DIRECTORY CHECK", "Directory doesnt exist creating directory");
                    SDCardRoot.mkdir();
                }

Now alQuranData is already created in my sdcard root. If i only create Reader1 directory than it works fine, but when is add Reader1/Surah than it did not create.

I also tried mkdirs() but it doesn't work.

Upvotes: 2

Views: 2968

Answers (4)

Praful Bhatnagar
Praful Bhatnagar

Reputation: 7435

Are you getting any error or exception. Please try to check the return value of mkdirs() method call. ALso try the following code:

File SDCardRoot = new File(Environment.getExternalStorageDirectory().toString() + "/alQuranData/Reader1/Surah");
Toast.makeText(getApplicationContext(), SDCardRoot.toString(), Toast.LENGTH_LONG).show();
if (!SDCardRoot.exists()) {
    Log.d("DIRECTORY CHECK", "Directory doesnt exist creating directory");
    SDCardRoot.mkdirs();
}

Please also check that you have added following permission in manifest file:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

I just tested the following code and it is working on my end:

File SDCardRoot = new File(Environment.getExternalStorageDirectory()
        .toString() + "/alQuranData/Reader1/Surah");
Toast.makeText(getApplicationContext(), SDCardRoot.toString(),
        Toast.LENGTH_LONG).show();
if (!SDCardRoot.exists()) {
    Log.d("DIRECTORY CHECK",
            "Directory doesnt exist creating directory "
                    + Environment.getExternalStorageDirectory()
                            .toString());
    boolean outcome = SDCardRoot.mkdirs();

    Log.d("DIRECTORY CHECK",
            "outcome for " + SDCardRoot.getAbsolutePath() + "     "
                    + outcome);
}

I have added alQaranData folder manually as mentioned in your post and added the permission and it start working at my end. Please check this code.

Upvotes: 3

Siddique Mohd saif
Siddique Mohd saif

Reputation: 11

By default there is no way in android to create multiple directory at once. you have to create one by one and check is created or not.

But I have created a below code to achieve similar objective. you can use to create multiple directory at once...


public static boolean recursivelyMakeDir(File endDirectory,File baseDir) {

        if (!baseDir.exists()){
            return false;
        }
        ArrayList<String> allDirectoryList = parseAndGetListDir(endDirectory.getAbsolutePath().substring(baseDir.getAbsolutePath().length()));

        File  currentDir = baseDir;

        for (int i=0; i< allDirectoryList.size() ; i++){

            File dir = new File(currentDir.getAbsolutePath() + "/" + allDirectoryList.get(i) );

            if (!dir.exists()){

                if (!dir.mkdir()){
                    return false;
                }
            }

            currentDir  = dir;
        }

        return true;
    }

    public static ArrayList<String> parseAndGetListDir(String data) {

        ArrayList<String> allDirectoryList = new ArrayList<>();
        boolean exit = false;
        String dir = "";

        for (int i=0; i<data.length() ; i++){

            if (data.charAt(i) == '/'){
                if (!dir.equals("")){
                    allDirectoryList.add(dir);
                    dir = "";
                }
            }else {
                dir = dir + data.charAt(i);
            }

        }

        if (!dir.equals("")){
            allDirectoryList.add(dir);
        }

        return allDirectoryList;
    }

Usage :

// you 100% sure that this  directory is already exist.
File baseDir = Environment.getExternalStorageDirectory();

// desire directory wanted to create.
File endDirectory = new File(Environment.getExternalStorageDirectory() +"kkk/SSS/aaa/ddd/b");

if(recursivelyMakeDir(endDirectory ,baseDir )){

  // dir created sucessessfully
}else{
  // failed
}

Upvotes: -1

timonvlad
timonvlad

Reputation: 1056

Use this code.....) 

  private void createSdCatalogs(String str1){
    //str1 = "/alQuranData"
File folder = new File(Environment.getExternalStorageDirectory() + str1);
boolean success = false;
if (!folder.exists()) {
    success = folder.mkdir();
    Log.v("Adding line", "/");
}}
private void createSdCatalogs(String str2)   { 
//str2 = "/alQuranData/Reader1";
File folder1 = new File(Environment.getExternalStorageDirectory() + str2);
boolean success1 = false;
if (!folder1.exists()) {
    success1 = folder1.mkdir();
    Log.v("Adding line", "/");
}

}

Upvotes: 0

Royston Pinto
Royston Pinto

Reputation: 6731

Using Java you cannot create multiple directories all at once. You will need to declare a folder name one by one and proceed to create a directory. So first create

  1. alQuranData
  2. alQuranData/Reader1/
  3. alQuranData/Reader1/Surah

Using the same piece of code you have provided.

Upvotes: 0

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