检测Android Camera文件夹

我想检测每个Android设备上的相机文件夹.从我读过这个文件夹从制造商到另一个不同,也不能保证会有设备上甚至DCIM文件夹.

这是我现在用来获取文件的方法:

private static final Set FILTER_FOLDERS = new HashSet(
        Arrays.asList(new String[] { "camera", "100andro", "100media" }));


private Set getCameraPictures() {
        final String[] columns = new String[] {
                MediaStore.Images.ImageColumns._ID,
                MediaStore.Images.ImageColumns.DATA,
                MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,
                MediaStore.Images.ImageColumns.DISPLAY_NAME,
                MediaStore.Images.ImageColumns.DATE_TAKEN,
                MediaStore.Images.ImageColumns.MIME_TYPE };
        // Order by options - by date & descending
        final String orderBy = MediaStore.Images.ImageColumns.DATE_TAKEN
                + " DESC";
        // Stores all the images from the gallery in Cursor
        final Cursor cursor = getContentResolver().query(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI, // base URI for
                                                                // the Images
                columns, // Which columns to return
                null, // Which rows to return (all rows)
                null, // Selection arguments (none)
                orderBy); // Ordering

        // Total number of images
        int count = cursor.getCount();

        // Create an array to store path to all the images
        String[] picturesPath = new String[count];

        if (cursor.moveToFirst()) {
            int dataColumn = cursor
                    .getColumnIndex(MediaStore.Images.Media.DATA);
            int bucketColumn = cursor
                    .getColumnIndex(MediaStore.Images.Media.BUCKET_DISPLAY_NAME);

            do {
                if (FILTER_FOLDERS.contains(cursor.getString(bucketColumn)
                        .toLowerCase(Locale.getDefault()))) {
                    // Store the path of the image
                    picturesPath[cursor.getPosition()] = cursor
                            .getString(dataColumn);
                }
            } while (cursor.moveToNext());
        }
        // Close the cursor
        if (null != cursor) {
            cursor.close();
        }
        return new HashSet(Arrays.asList(picturesPath));
    }

但这也是从其他地方返回的图像......我怎样才能只检索用相机拍摄的图像？如果没有本地方法可以执行此操作,我在哪里可以找到每个制造商使用的文件夹的名称(尽可能多),以便我可以通过BUCKET_DISPLAY_NAME过滤它？

谢谢

LE:

我已更新方法以获取设备上的图像并过滤文件夹.