Android: Creating folder does not work - android

I Want to take a photo and save it in the external storage, but the folder creation fails.
Permission is set.
File folder = new File(Environment.getExternalStorageDirectory() +
File.separator + "DCIM" + File.separator + "ScannerApp");
if(!folder.exists()){
folder.mkdirs();
}
Help please :)


use this code below to initialize folder value:
File folder = new File(Environment.getExternalStorageDirectory(), "DCIM" + File.separator + "ScannerApp");
or
File folder = new File(new File(Environment.getExternalStorageDirectory(), "DCIM"), "ScannerApp");


Replace this
File folder = new File(Environment.getExternalStorageDirectory() +
File.separator + "DCIM" + File.separator + "ScannerApp");
if(!folder.exists()){
folder.mkdirs();
}
with
File folder = new File(Environment.getExternalStorageDirectory().getPath() +
File.separator + "DCIM" + File.separator + "ScannerApp");
if(!folder.exists()){
folder.mkdirs();
}
The problem is that you are using Environment.getExternalStorageDirectory() which will not return the path. Use Environment.getExternalStorageDirectory().getPath() to get the path.
Hope this helps.

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Creating directory hierarchy in Android (for gallery)

I have some code like this:
photo = new File(android.os.Environment.getExternalStorageDirectory(), "images/mydir/" + File.separator + timeStamp + ".jpg");
photo.getParentFile().mkdirs();
photo.createNewFile();
But in the gallery, I'm only seeing "mydir" with the photos inside it. No "images" directory to be found.
How do I create a hierarchy so there's an image folder and mydir is inside that?
Thanks

You have problem in your code as you have one / after mydir and you are also adding File.separator so final output will be images/mydir//
photo = new File(android.os.Environment.getExternalStorageDirectory(), "images/mydir/" + File.separator + timeStamp + ".jpg");
Just remove the / after mydir like below
photo = new File(android.os.Environment.getExternalStorageDirectory(), "/images/mydir" + File.separator + timeStamp + ".jpg");
This should work now.

how to create application folder in android

I am creating application folder on first activity on onCreate() Method but folder is not creating.here is the code
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
File fil = new File(this.getFilesDir().getPath()+File.separator+"MyContactsBackUp");
fil.mkdirs();
} else {
File directory = new File(Environment.getExternalStorageDirectory()+File.separator+"MyContactsBackUp");
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}

Try this code
if (android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED)) {
File podcastFolder = new File(Environment.getExternalStorageDirectory() + File.separator
+ getString(R.string.app_name));
} else {
/* save the folder in internal memory of phone */
File podcastFolder = new File("/data/data/" + getPackageName()
+ File.separator + getString(R.string.app_name));
}

Try this.
File f = new File(android.os.Environment.getExternalStorageDirectory(),File.separator+"MyContactsBackUp/");
f.mkdirs();
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android programming question

dy_path = Environment.getExternalStorageDirectory() + "\5.jpg";
Instead of that i want how to give dynamic path automatically picture saved based on current time.
I am new to Android. Plz answer my question

You could concatenate the path with
DateFormat.getDateInstance().format(new Date());
That is, use something like
String time = DateFormat.getDateInstance().format(new Date());
dy_path = Environment.getExternalStorageDirectory() + "\\" + time + "\\5.jpg";

File root = android.os.Environment.getExternalStorageDirectory();
File dir = new File(root.getAbsolutePath() + "/your folder name" + File.separator);
dir.mkdirs();
String pic = CommonMethod.getRandomString(30);
File file = new File(dir, String.valueOf(pic + ".jpg"));
picturePath = picturePath + String.valueOf(pic) + ".jpg";

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