Create folder in Android [duplicate]

Question

 import java.io.File;  
    File folder = new File(Environment.getExternalStorageDirectory() + "/TollCulator");
    boolean success = true;
    if (!folder.exists()) {
        //Toast.makeText(MainActivity.this, "Directory Does Not Exist, Create It", Toast.LENGTH_SHORT).show();
        success = folder.mkdir();
    }
    if (success) {
        //Toast.makeText(MainActivity.this, "Directory Created", Toast.LENGTH_SHORT).show();
    } else {
        //Toast.makeText(MainActivity.this, "Failed - Error", Toast.LENGTH_SHORT).show();
    }

The above should create a folder in my SD card if it does not exist, if it does then don't do anything. Although the toast works based on the condition but it doesn't create a directory when it does not exist. Any idea how to resolve it?

My Manifest looks like this:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.test.testing"
    android:versionCode="1"
    android:versionName="1.0" >

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

    <uses-sdk
        android:minSdkVersion="6"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.test.testing.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Update: I updated my manifest as well as updated my code but it's still not creating the folder in my SD card. Keep in mind, I am using Eclipse and running the app directly to my phone (GNex VZW) instead of using an AVD.

Perhaps you need to add filesystem write permissions to your app's manifest. — DMH
– DMH, Commented Jul 22, 2013 at 18:43

tony gil · Accepted Answer · 2016-10-12 09:56:12Z

148

Add this permission in Manifest,
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

File folder = new File(Environment.getExternalStorageDirectory() + 
                             File.separator + "TollCulator");
boolean success = true;
if (!folder.exists()) {
    success = folder.mkdirs();
}
if (success) {
    // Do something on success
} else {
    // Do something else on failure 
}

when u run the application go too DDMS->File Explorer->mnt folder->sdcard folder->toll-creation folder

edited Oct 12, 2016 at 9:56

tony gil

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answered Jul 22, 2013 at 18:43

KOTIOS

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9 Comments

Si8 Over a year ago

I updated my question as to how I have the application installed.

KOTIOS Over a year ago

are u able to create now?

Si8 Over a year ago

I get the message Directory Created but no folder in my sdcard.

KOTIOS Over a year ago

r u debuging ur app on device or emulator?

KOTIOS Over a year ago

just debug once in emulator if still not sloved mail the code

|

Sandeep · Accepted Answer · 2019-07-10 18:46:37Z

20

If you are trying to make more than just one folder on the root of the sdcard, ex. Environment.getExternalStorageDirectory() + "/Example/Ex App/"

then instead of folder.mkdir() you would use folder.mkdirs()

I've made this mistake in the past & I took forever to figure it out.

edited Jul 10, 2019 at 18:46

Sandeep

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answered Jul 22, 2013 at 18:53

Alankrut Patel

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2 Comments

Si8 Over a year ago

Just trying to create one folder and later on check each time the app runs to see if it exists and not create another one.

Sohel S9 Over a year ago

in android 13 this code is not worked. Note:- I already give READ_MEDIA_VIDEO, READ_MEDIA_IMAGES android 13 specific permission

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