无法从存储中获取所有视频文件 Android

Question

Am using following method to get video files from storage. it retrieves only directories files but not read files inside sub-directory files.

Example:- i can read file from WhatsApp Video but in the same folder there is a sub folder name sent i can't read the files inside.

any help, how can i read all folder and sub-folder

public class GetVideos {

    @RequiresApi(api = Build.VERSION_CODES.Q)
    public void getAllVideosData(Context context, ArrayList<VideoViewInfo> AllVideosData) {

        String[] projection = new String[] {
                MediaStore.Video.Media._ID,
                MediaStore.Video.Media.TITLE,
                MediaStore.Video.VideoColumns.DATA,
                MediaStore.Video.Media.BUCKET_DISPLAY_NAME,
                MediaStore.Video.Media.DATE_TAKEN,
                MediaStore.Video.Media.DURATION,
                MediaStore.Video.Media.RESOLUTION,
                MediaStore.Video.Media.SIZE
    };

        Uri Video = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
        String orderBy = MediaStore.Video.Media.DATE_TAKEN;

        @SuppressLint("Recycle")
        Cursor cur = context.getContentResolver().query(Video, projection,null,null,orderBy );
        assert cur != null;
        Log.i("ListingVideo"," query count=" + cur.getCount());

        if (cur.moveToNext()) {
            String id;
            String title;
            String filePath;
            String bucketName;
            String date;
            String duration;
            String resolution;
            String size;

            int tempId = cur.getColumnIndex(MediaStore.Video.Media._ID);
            int titleTemp = cur.getColumnIndex(MediaStore.Video.Media.TITLE);
            int filePathTemp = cur.getColumnIndex(MediaStore.Video.Media.DATA);
            int bucketTemp = cur.getColumnIndex(MediaStore.Video.Media.BUCKET_DISPLAY_NAME);
            int dateTemp = cur.getColumnIndex(MediaStore.Video.Media.DATE_TAKEN);
            int durationTemp = cur.getColumnIndex(MediaStore.Video.Media.DURATION);
            int resolutionTemp = cur.getColumnIndex(MediaStore.Video.Media.RESOLUTION);
            int sizeTemp = cur.getColumnIndex(MediaStore.Video.Media.SIZE);
            do {
                id = cur.getString(tempId);
                title = cur.getString(titleTemp);
                filePath = cur.getString(filePathTemp);
                bucketName = cur.getString(bucketTemp);
                date = cur.getString(dateTemp);
                duration = cur.getString(durationTemp);
                resolution = cur.getString(resolutionTemp);
                size = cur.getString(sizeTemp);
                Log.d(TAG, "getAllVideosData: "+bucketName);
                VideoViewInfo vvi = new VideoViewInfo(id, title, filePath, bucketName, date, duration, resolution, size);
                AllVideosData.add(vvi);

            } while (cur.moveToNext());
        }
    }
}

What should i do to get all video file in my storage?

Bountry reward i want to read every video file from storage with above code i can only read files limited location as per MediaStore.Video

Answer 1

You can run a recursive function to list all video files like

void findVideos(File dir, ArrayList<String> list){
    for (File file : dir.listFiles()) {
        if (file.isDirectory()) findVideos(file, list);
        else if(file.getAbsolutePath().contains(".mp4")) list.add(file.getAbsolutePath());
    }
}

Or you can query the mediastore like done in this repository here

Answer 2

It's really hard and full of a mess when doing file handling because you only access the files but what about the subdirectories in it? well in the case of

@Kursh's answer recursion will not help either

because it will just go deep into the sub directories never to come back I had developed the algorithm but it was not really inefficient, but you can use this library and remember to use it in an ASYNC TAK or Coroutine

Answer 3

但是递归方法不适用于获取视频文件信息