Accessing SD CARD and doing FILE IO Operations

Question

I am trying to create a folder and then after that do some file IO operations! I am using a sony Xperia Z to test this out! I know right now I've hardcoded the location but it doesn't let me create folders!

  File appPath = new File("/storage/sdcard1/folder");
        if (!appPath.exists()) {
            appPath.mkdirs();
}

I am using a targetSdkVersion of 22 And having lollipop on my phone. I tried

appPath.mkDir();

as well but all this gives a value of False. And i have added permissions to manifest

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

And I tried many different open source file manager but none are able to create folders, But ES file Manager is able to create folders and do File IO operations!

Duplicate of http://stackoverflow.com/questions/35109307/mkdir-works-while-inside-internal-flash-storage-but-not-sd-card — Jared Rummler, Feb 28 '16 at 08:26
Check the return value of mkdirs() and do not continue if false but display a toast saying so. — greenapps, Feb 28 '16 at 10:27

score 0 · Answer 1 · edited May 23 '17 at 10:28

0

Don't hardcode global paths like /sdcard, use Environment.getExternalStorageDirectory() and related methods instead. Here is a working sample.

   public static String getNewFolderPath() {
        File folder = new File(Environment.getExternalStorageDirectory()
                .toString() + File.separator + "folder");
        if (!folder.exists())
            folder.mkdirs();
        return folder.getAbsolutePath();
    }

EDIT: For more info check:

Hope it helps!

edited May 23 '17 at 10:28

Community

1
1

answered Feb 28 '16 at 06:50

Gueorgui Obregon

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getExternalStorageDirectory gives /storage/emulated/0 which is the internal storage in my phone! Btw the problem is not about hardcoding, the problem is about i cannot write in SD Card! – Kunal Feb 28 '16 at 07:59
Yes I understand, but `Environment.getExternalStorageDirectory()` is for getting SD Card path, I edited my answer with some links that will explain you, your actual problem. Good luck :) – Gueorgui Obregon Feb 28 '16 at 08:11
1

No. getExternalStorageDirectory() is for getting path to external storage. And in most devices that is not the path to a removable micro sd card. – greenapps Feb 28 '16 at 10:29
@g2o I don't have the problem with getting the SD card path or internal storage path, the point is I'm not able to write to an external SD card even if i hardcode the correct path! – Kunal Feb 28 '16 at 10:40

Accessing SD CARD and doing FILE IO Operations

1 Answers1