Cannot create a file?

Question

I have a problem with creating files in Android. I have followed this tutorial, and wrote this method:

public File getStorageDir(String name) {
        String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS).toString();
        File file = new File(path, name);

        System.out.println(path);
        if (!file.mkdirs()) {
            System.out.println("Directory not created");
        }

        return file;
    }

Path variable prints /storage/emulated/0/Documents, however if goes off and no such directory is created. I have added

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

permissions to manifest file. I have tried using file.getParentFile().mkdirs() but got same result. What am I doing wrong?

`Android cannot create file` ??? I dont see you trying to create a file. Only a directory. — greenapps, Mar 15 '18 at 13:18
`I have added ... permissions to manifest file.`. That is not enough for Android 6+ as you can read here in at least ten posts every week. Please read some hours stackoverflow pages tagged `android` and you will know what to do. — greenapps, Mar 15 '18 at 13:21

score 0 · Answer 1 · answered Mar 15 '18 at 13:26

0

You use below code to create folder.

File folder = new File(Environment.getExternalStorageDirectory() +
                File.separator + "folderName");

        if (!folder.exists()) {
            success = folder.mkdirs();
        }

answered Mar 15 '18 at 13:26

amit semwal

345
3
16

score -1 · Answer 2 · answered Mar 15 '18 at 13:51

-1

So turns out it was being created the whole time, just not visible in file explorer. I have fixed it with answer from this post. Final code looks like this:

public File getStorageDir(Context context, String name) {
        String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS).getPath();
        File file = new File(path, name);

        file.getParentFile().mkdirs();

        MediaScannerConnection.scanFile(context, new String[] {path}, null, null);

        return file;
    }

Thanks everyone for answers, hope this helps someone who faces same problem.

answered Mar 15 '18 at 13:51

somik07

39
9

Well this function creates file in specified folder. I would say that it is something. And it solves problem with MTP protocol, as explained in linked post. No need to be so grumpy. – somik07 Mar 15 '18 at 16:21
It does not create a file. Sorry. – greenapps Mar 15 '18 at 20:25

Cannot create a file?

2 Answers2