Create directory on background thread.

    private static final String SCREENSHOT_FILE_NAME_TEMPLATE = "Screenshot_%s.png";

    private static final String SCREENSHOT_SHARE_SUBJECT_TEMPLATE = "Screenshot (%s)";

    private int mNotificationId;

    private NotificationManager mNotificationManager;

    private Notification.Builder mNotificationBuilder;

    private String mImageFileName;

    private String mImageFilePath;

    private long mImageTime;

    private BigPictureStyle mNotificationStyle;

    private int mImageWidth;

    private int mImageHeight;

    private final int mNotificationId;

    private final NotificationManager mNotificationManager;

    private final Notification.Builder mNotificationBuilder;

    private final File mScreenshotDir;

    private final String mImageFileName;

    private final String mImageFilePath;

    private final long mImageTime;

    private final BigPictureStyle mNotificationStyle;

    private final int mImageWidth;

    private final int mImageHeight;

    // WORKAROUND: We want the same notification across screenshots that we update so that we don't

    // spam a user's notification drawer.  However, we only show the ticker for the saving state

        String imageDate = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date(mImageTime));

        mImageFileName = String.format(SCREENSHOT_FILE_NAME_TEMPLATE, imageDate);

        // Create screenshot directory if it doesn't exist

        final File screenshotDir = new File(Environment.getExternalStoragePublicDirectory(

        mScreenshotDir = new File(Environment.getExternalStoragePublicDirectory(

                Environment.DIRECTORY_PICTURES), SCREENSHOTS_DIR_NAME);

        screenshotDir.mkdirs();

        mImageFilePath = new File(screenshotDir, mImageFileName).getAbsolutePath();

        mImageFilePath = new File(mScreenshotDir, mImageFileName).getAbsolutePath();

        // Create the large notification icon

        mImageWidth = data.image.getWidth();

        Resources r = context.getResources();

        try {

            // Create screenshot directory if it doesn't exist

            mScreenshotDir.mkdirs();

            // Save the screenshot to the MediaStore

            ContentValues values = new ContentValues();

            ContentResolver resolver = context.getContentResolver();