Force access to external removable microSD card

Question

I\'m using a Samsung A3, Android 5.0.2. I\'m using this setup to compile apps, i.e. Android 4.1 Jelly Bean (API 16) target.

I precisely know the path of the external rem

Answer 1

bear in mind that some android devices will have a different path for the SD Card and some doesn´t have removable SD Card.

You don´t have to set the path directly!

File myDir = new File("/mnt/extSdCard/test");
myDir.mkdirs();

You can check first if your device has mounted a removable SD Card:

public static boolean isSDCardAvailable(Context context) {
    File[] storages = ContextCompat.getExternalFilesDirs(context, null);
    if (storages.length > 1 && storages[0] != null && storages[1] != null)
        return true;
    else
        return false;
}

Why get External Directories > 1, well because most of all the android devices has external storage as a primary directory and removable SD Card as second directory:

But you can use a method to get the real path of your removable microSD card:

public static String getRemovableSDCardPath(Context context) {
    File[] storages = ContextCompat.getExternalFilesDirs(context, null);
    if (storages.length > 1 && storages[0] != null && storages[1] != null)
        return storages[1].toString();
    else
        return "";
}

Then just do this:

File myDir = new File(getRemovableSDCardPath(getApplicationContext()),"test");
if(myDir.mkdirs()){
  Log.i(TAG, "Directory was succesfully create!");
}else{
  Log.i(TAG, "Error creating directory!");
}

---

For example using the method:

   String pathSDCard = getRemovableSDCardPath(getApplicationContext());

I have as a result the path of my removable SD Card (if i wouldn´t have a removable SD Card my path would be "", so you can implemente a validation to avoid the creation of the folder):

/storage/extSdCard/Android/data/com.jorgesys.myapplication/files

Now creating a new folder inside :

    File myDir = new File(getRemovableSDCardPath(getApplicationContext()),"test");
    if(myDir.mkdirs()){
        Log.i(TAG, "Directory was succesfully create!");
    }else{
        Log.i(TAG, "Error creating directory!");
    }

now i have the directory /test created: