How to create Android directory automatically if it doesn't already exist

Question

I am creating a gallery app using a tutorial but get the following error:

abc directory path is not valid! Please set the image directory name AppConstant.java c

Answer 1

Here's how you create directories if they don't exist. Considering that directory is indeed a directory.

// If the parent dir doesn't exist, create it
if (!directory.exists()) {
    if (parentDir.mkdirs()) {
        Log.d(TAG, "Successfully created the parent dir:" + parentDir.getName());
    } else {
        Log.d(TAG, "Failed to create the parent dir:" + parentDir.getName());
    }
}

mkdirs() will also create missing parent directories (i.e. all directories that lead to directory).