How to create folder in android

Question

I have stuck up with creation of folder in my mobile which is (Micromax Canvas 2).I cant able to create folder.please tel me where i made mistake.

File folder = new File(Environment.getExternalStorageDirectory() + "/Example");
        boolean success = true;
        if (!folder.exists()) {
            success = folder.mkdirs();
        }
        if (success) {
          Toast.makeText(getApplicationContext(), "Success", Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(getApplicationContext(), "Failure", Toast.LENGTH_LONG).show();
        }

permission:

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

Any error? Have you tested what returns `Environment.getExternalStorageDirectory()`? — nKn, Apr 22 '14 at 11:26
its showing path like/mnt/sdcard/appname but in success it shows false .. — Giridharan, Apr 22 '14 at 11:28
http://stackoverflow.com/questions/17794974/create-folder-in-android — duggu, Apr 22 '14 at 11:30
As per documentation: `Returns false on failure or if the directory already existed.` — nKn, Apr 22 '14 at 11:32

score 3 · Answer 1 · edited May 28 '14 at 03:18

3

File f1 = new File(getApplicationContext().getFilesDir()+"");
fol = new File(f1, "Images");
if(!fol.exists())
{
    fol.mkdir();
}

edited May 28 '14 at 03:18

Giacomo1968

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answered Apr 22 '14 at 11:30

Vijay Barbhaya

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score 1 · Answer 2 · answered Apr 22 '14 at 11:27

1

 File folder = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Example");
    boolean success = true;
    if (!folder.exists()) {
        success = folder.mkdirs();
    }
    if (success) {
      Toast.makeText(getApplicationContext(), "Success", Toast.LENGTH_LONG).show();
    } else {
        Toast.makeText(getApplicationContext(), "Failure", Toast.LENGTH_LONG).show();
    }

Use getExternalStorageDirectory().getAbsolutePath() instead of just getExternalStorageDirectory().

answered Apr 22 '14 at 11:27

SoulRayder

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still cant able to create folder gautham – Giridharan Apr 22 '14 at 11:44
I hope you have checked in your sdcard manually if the folder is created – SoulRayder Apr 22 '14 at 11:49
ya i checked ..but folder is not created which i specified – Giridharan Apr 22 '14 at 11:52

score 1 · Answer 3 · answered Apr 22 '14 at 11:28

1

I implement like this. Instead of "plus(+)" write with a "comma(,)"

 File imageFileFolder = new File(Environment.getExternalStorageDirectory(),
                                 "folder name");
 imageFileFolder.mkdir();

answered Apr 22 '14 at 11:28

canova

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score 1 · Answer 4 · answered Apr 22 '14 at 11:39

At first add permission in AndroidMenifest.xml file

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

then add FolderInfo.Class

package com.xxx.cg;

    import java.io.File;

    import android.os.Environment;

    public class FolderInfo {
        public static final String SDCARD;
        static {
            SDCARD = Environment.getExternalStorageDirectory().getAbsolutePath();
        }
        public static final String CG_FOLDER = SDCARD + "/CG";

        public static String ASSET_FOLDER = CG_FOLDER + "/assets";

        public static boolean createFolderForCG() {
            boolean exist = false;
            File dir = new File(CG_FOLDER);
            if (dir.exists()) {
                exist = true;
            } else {
                if (dir.mkdirs()) {
                    exist = true;
                }
            }
            return exist;
        }

        public static boolean createAssetsFolderForCG() {
            boolean exist = false;
            File dir = new File(ASSET_FOLDER);
            if (dir.exists()) {
                exist = true;
            } else {
                if (dir.mkdirs()) {
                    exist = true;
                }
            }
            return exist;
        }

        public static boolean createFolder(String folder) {
            boolean exist = false;
            File dir = new File(ASSET_FOLDER + "/" + folder);
            if (dir.exists()) {
                exist = true;
            } else {
                if (dir.mkdirs()) {
                    exist = true;
                }
            }
            return exist;
        }

    }

then call from your activity. such as MainActivity.Class.

        FolderInfo.createFolderForCG();
    FolderInfo.createAssetsFolderForCG();
            FolderInfo.createFolder(subFolderName);

then run. You can show CG/assets your SD Card. and also sub folders show CG/assets/.................

Best of Luck!

score 0 · Answer 5 · answered Apr 22 '14 at 11:31

0

String downloadDirectory = "/folderName";
        String extStorageDirectory = Environment.getExternalStorageDirectory()
                .toString();
        File newDownloadDirectory = new File(extStorageDirectory
                + downloadDirectory);
        newDownloadDirectory.mkdir();

answered Apr 22 '14 at 11:31

Android

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still cant able to create a folder – Giridharan Apr 22 '14 at 11:45
no error folder is not created in sdcard.. its showing path..In make directory it showing boolean false – Giridharan Apr 22 '14 at 12:06

score 0 · Accepted Answer · answered Apr 25 '14 at 09:35

0

I have solved the problem.. I have declared <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> after the application tag.So it didnt works. I declared permission before application tag.Now folder had been created.

answered Apr 25 '14 at 09:35

Giridharan

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How to create folder in android

6 Answers6